MXPA01008323A - Sulphonated copolymer and method for cleaning surfaces and/or providing same with stain resistant properties and/or for facilitating stain and soil release - Google Patents

Abstract

The invention concerns a water-soluble or water-dispersible copolymer comprising:at least one polyoxyalkylene unit (POA);at least one sulphonated polyamide unit (PAS);the proportion of SO3M functions expressed in SO3- function mass, in said (PAS) unit(s) is such that it represents at least 0.1%of said copolymer total mass;the mass ratio of set of (POA) units/ set of (PAS) units ranges from 95/5 to 30/70;the number of amino -NH2 functions present in said copolymer is not more than 80 milliequivalents per kilogram of copolymer;the number of carboxy -COOH functions present in said copolymer is not less than 80 milliequivalents, preferably at least 100 milliequivalents per kilogram of copolymers. The invention also concerns the use of said copolymer as a detergent for hard or textile surfaces, in particular made of synthetic polymer, more particularly textile surfaces in polyamide, and/or as agent capable of providing said surfaces with stain-resistant properties and/or facilitating stain or soil release in said surfaces.

Description

COPOLYMER YOUR PHONATE AND PROCEDURE TO CLEAN SURFACES AND / OR CONTRIBUTE TO THESE PROPERTIES OF RESISTANCE TO SPOTS AND / OR FACILITATING THE REMOVAL OF SPOTS AND DIRT DESCRIPTION OF THE INVENTION The present invention aims at a novel sulfonated copolymer comprising polyether and polyamide portions, its preparation process and its use as a detergent for hard or textile surfaces, mainly synthetic polymer, more particularly for polyamide textile surfaces, and / or as an agent capable of providing said surfaces with stain resistance properties (stain resistance) and / or facilitating the removal of stains and dirt (release of dirt) from said surfaces. The object of the invention is also a process for putting the sulfonated copolymer into operation, for cleaning and / or treating said surfaces in order to provide them with properties of stain resistance and / or which facilitate the elimination of the spots and dirt (soil read by its meaning in English).

It also has as its objective the detergent compositions comprising said copolymer. It has been proposed in the French patent application FR-A-2, 192, 167, to use in detergent compositions for the washing of polyamide fabrics, of copolymers obtained by condensation (a) of an aliphatic dicarboxylic acid, (b) of a hydroxypolyoxyalkylenic compound and (c) a compound selected from the amino acids or lactams, the diamines or their salts with the dicarboxylic acid (a), in combination with a detergent agent chosen from the ethoxylated alkylphenols, the alkoxylated primary or secondary alcohols, the alkoxylated monoethanolamides. Patent application WO92 / 02570 describes stained articles (fibers, carpets) of polyamide, resistant to acid stains, said polyamide is a polyhexamethylene adipamide, a poly-e-caprolactam or a copolymer of hexamethylenediamine / adipic acid / -e-caprolactam , containing from 1 to 4% by weight of sulfonated aromatic carboxylic groups (for example 5-isophthalic acid) and having from 20 to 40 milliequivalents of amine termini to 106 grams, said polyamide is dyed with the aid of an acid dye.

French Patent Application FR-A-2,722,804 discloses water-soluble and / or hydrodispersal copolyamides of molecular weight in number from 2000 to 30,000, comprising aromatic and / or aliphatic dicarbonyl portions, sulfoaryldicarbonyl portions, and polyoxyalkylene diamine portions, alone or with aliphatic diamine portions, and its use for gluing ("sizing") synthetic polyamide threads or synthetic polyamide fibers optionally mixed with natural, artificial or synthetic fibers. A first objective of the invention consists of a water-soluble or water-dispersible copolymer (C) comprising: - at least one polyoxyalkylene unit (POA) and at least one sulfonated polyamide unit (PAS) said copolymer (C) is characterized in that: - the polyoxyalkylene unit (POA) comprises from 2 to 200, preferably from 5 to 150 similar or different oxyalkylene portions, where the linear or branched alkylene residue contains from 2 to 12, preferably of 2 to 6 carbon atoms, more particularly 2 or 3 carbon atoms, the sulfonated polyamide unit (PAS) comprises, (i) polyunsaturated non-sulfonated portions (mNS) similar or different from the formula (mNS1) and / or (mNS2) -C (0) -AC (O) -N (R) -DN (R) - (mNS1) (dicarbonyl (diimino) and / or -C (0) -KN (R) - (mNS2) ( "lactam") and / or -C (O) -KN (R) -C (0) -AC (O) - (mNS3) ("lactam" / dicarbonyl) and / or -N (R) -DN (R) -C (0) -KN (R) - (mNS4) (diimino / "lactam") formulas in which: • A represents a aliphatic, cycloaliphatic or aromatic hydrocarbon group, D represents an aliphatic, cycloaliphatic or aromatic hydrocarbon group optionally interrupted with one or more oxygen or tertiary nitrogen heteroatoms, K represents an aliphatic, cycloaliphatic or aromatic group the symbols R are identical or different and represent a hydrogen atom or an alkyl group of 1 to 4 carbon atoms; (ii) the similar or different polyfunctional sulfonated portions (mS) of the formula -VQ (L-S03M) nW- where the symbols V and W, identical or different, represent a carbonyl group -C (0) oxi -0- immo -NH- or (R) imino -N (R) - where R represents an alkyl group of 1 to 4 carbon atoms the symbol Q represents an aromatic, aliphatic or cycloaliphatic hydrocarbon group L is a valence bond or an alkylene group, alkoxyalkylene, oxyalkylene, arylene, alkylarylene, alkoxyarylene, M represents a hydrogen atom or an alkali cation, n is greater than or equal to 1; (iii) and the linking groups (glPAS) of the portions of said sulfonated polyamide unit (PAS) -C (0) -0- and / or -0-CO) - and / or C (0) -N (R) - and / or -N (R) -C (0) - where R, similar or different, represents a hydrogen atom or an alkyl group of 1 to 4 carbon atoms * the proportion of functional groups S03M, expressed as mass of functional group S03-, in the unit or units (PAS) is such that it represents at least 0.1%, preferably at least 0.2%, more particularly at least 0.4%, mainly from 0.4 to 15% of the total mass of the copolymer ( C), * the mass ratio of the units as a whole (POA) / mass of the units as a whole (SBP) is 95/5 to 3 = 70, preferably 90/10 to 40/60, more particularly 85/15 to 50/50, * the number of amino functional groups -NH 2 present in the copolymer (C) is at most 80 milliequivalents per kilogram of copolymer (C) * the number of carboxyl -COOH functional groups present in the copolymer (C) is at least 80 milliequ ivalent, preferably of at least 100 milliequivalents per kilogram of copolymer (C). The copolymer (C) can have a molecular mass in number, less than or equal to 100,000, preferably less than or equal to 70,000, more particularly from 5,000 to 60,000, measured at 100 ° C, by gel exclusion chromatography (SEC) in solution in dimethylacetamide (DMAC) added with 10 ~ 2 mol of lithium bromide; This mass is measured in polystyrene equivalents. The copolymer (C) may further comprise monovalent functional groups other than -COOH and -NH2. The functional groups hydroxyl, alcohol, (R) amino, urea, imides, esters, alkyl, aryl, quaternary ammonium may be mentioned as examples. .

The copolymers (C) can be of any type, linear, branched, crosslinked, etc. Preferably, said copolymer is a linear sequenced polymer; the ratio in number of portions (POA) / number of portions (PAS) is 1/2 to 2/1. The optional monovalent functional groups -NH2 and -COOH are generally at the ends of the copolymer chains (O. Said copolymers can also comprise in their polyamide units (PAS) the different polyfunctional portions such as: * the non-sulfonated dicarbonyl portions ( mD) of the formula -C (O) -AC (O) -, where A represents an aliphatic, cycloaliphatic or aromatic hydrocarbon group, whether or not similar to the dicarbonyl subportion of the portion (mNS1) or (mNS3), not bound to a diimino subunit-N (R) -DN (R) - or a "lactam" sub-C (O) -KN (R) - * the non-sulfonated polyfunctional portions (mP) of the formula (i) -XEY- where the symbols X and Y, identical or different, represent a group • oxy -O-imino -NH- or (R) imino -N (R) - where R represents an alkyl group of 1 to 4 carbon atoms the symbol E represents an aliphatic, cycloaliphatic or aromatic hydrocarbon group, polyvalent, possibly interrupted I ask for one or more heteroatoms of oxygen or tertiary nitrogen, said polyvalent group is linked to at least one group X and at least one group Y, or (ii) -C (O) -E '-C (O) - where the symbol E 'represents an aliphatic, cycloaliphatic or aromatic hydrocarbon group substituted by at least one hydroxyl or carboxyl functional group. Among the non-sulfonated polyfunctional portions (mNS1) (dicarbonyl / diimino), those where * the dicarbonyl subpart is a aliphatic or cycloaliphatic portion where the aliphatic or cycloaliphatic residue contains from 2 to 10 carbon atoms, such as the adipoyl, glutaroyl, succinoyl, trimethylalipyl, pimeloyl, azeloyl, sebacoyl, suberoyl, itaconoyl, maleoyl, fumaroyl, cyclopentanes -dicarbonyl, cyclohexanes functional groups -dicarbonyl, oxy-2-methylsuccinoyl, oxymethylglutaroyl, oxyglutaroyl * the dicarbonyl sub-portion is an aromatic moiety, such as the terephthaloyl, isophthaloyl, ortho Oftaloyl, naphthalenedicarbonyl, anthracenylcarbonyl, biphenyldicarbonyl, oxyisophthalydicarbonyl, oxy-4-phthalic-dicarbonyl * ^ a diimino subpopulation is an aliphatic moiety where the aliphatic residue is a linear, branched or cyclic alkylene group containing from 2 to 50, preferably from 2 to 20. carbon atoms and can be interrupted by one or more oxygen or tertiary nitrogen heteroatoms, such as the ethylenediimino, tetramethylenediimino, hexamethylenediimino, methylpentamethylenediimino, 3 -oxa-pentamethylenediimino, 3,6-dioxa-octamethylene-l, 8-diimino * la The diimino sub-portion is an aromatic moiety in which the aromatic residue is a phenylene radical or a bivalent radical consisting of a combination of several benzene cores optionally substituted, ortho- or peri-condensed or linked together by inert groups, such as the bond of simple valence, the alkylene radical, the oxy group, the oxo group, the sulfonyl group, as the porc phenylene diimino ion, diphenylmethanediimino, where the phenyls are optionally substituted by an alkyl radical of 2 to 3 carbon atoms.

Among the non-sulfonated polyfunctional portions (mNS2) ("lactam"), aliphatic or aromatic portions may be mentioned, where the aliphatic or aromatic residue contains from 2 to 20 carbon atoms, such as the 6-iminocaproyl, 11-iminoundecanoyl, 12 -iminododecanoyl, 3-imino-2-dimethylpropionyl, 4- (β-iminoethyl) benzoyl. Among the non-sulfonated polyfunctional portions (mNS3) ("lactam" / dicarbonyl), there may be mentioned those where: * the "lactam" sub-portion is an aliphatic or aromatic portion where the aliphatic or aromatic residue contains from 2 to 20 carbon atoms, as the 6-iminocaproyl, 11-iminoundecanoyl moieties, 12-iminododecanoyl, 3 -imino-2-dimethylpropionyl, 4- (ß-iminoethyl) benzoyl * The dicarbonyl subpoena is an aliphatic or cycloaliphatic moiety where the aliphatic or cycloaliphatic residue contains from 2 to 10 carbon atoms, such as the adipoyl moieties , glutaroyl, succinoyl, trimethylaipyl, pimeloyl, azeloyl, sebacoyl, suberoyl, itaconoyl, maleoyl, fumaroyl, cyclopentanedicarbonyl, cyclohexanedicarbonyl, 2-oxymethyl succinyl, oxymethylglutaroyl, oxyglutaroyl * The dicarbonyl subpart is an aromatic moiety, such as the terephthaloyl, isophthaloyl, orthophthaloyl, naphthalenedicarbonyl, anthracenylcarbonyl, biphenyldicarbonyl, dicarbonyl oxyisophthalic, 4-oxy-phthalic dicarbonyl. Among the non-sulfonated polyfunctional moieties (mNS4) (diimino / "lactam"), there may be mentioned those where: * the diimino sub-portion is an aliphatic portion where the aliphatic residue is a linear, branched or cyclic alkylene group containing from 2 to 50 , preferably from 2 to 20 carbon atoms and may be interrupted with one or more oxygen or tertiary nitrogen heteroatoms, such as the ethylenediimino, tetramethylene diimino, hexamethylene diimin, ethyl pentamethylene diimino, 3-oxa-pentamethylene diimino, 3,6-dioxa-octamethylene 1, 8-diimino, * the diimino sub-portion is an aromatic portion in which the aromatic residue is a phenylene radical or a bivalent radical consisting of a combination of several benzene nuclei optionally substituted, ortho- or peri-condensed or linked together by the inert groups, such as the simple valence bond, the alkylene radical, the oxy group, the oxo group, the sulfonyl group, as the paraphenylenediimino, the diphenylmethanediimino where the phenyl nuclei are optionally substituted with a radial alkyl of 2 to 3 carbon atoms, * the sub-unit "lactam" is an aliphatic or aromatic portion where the aliphatic or aromatic residue contains from 2 to 20 carbon atoms, as the 6-iminocaproyl, 11-iminoundecanoyl, 12-iminododecanoyl, 3-imino-2-dimethylpropionyl, 4- (β-iminoethyl) benzoyl portions. Among the sulfonated polyfunctional portions (mS), there may be mentioned: * the aliphatic dicarbonyl portions in which the aliphatic residue contains from 2 to 10 carbon atoms, optionally substituted by at least one aryl radical, phenyl mainly, and having at least one sulfo-linked substituent to a carbon atom, or the sulfosuccinoyl, 3-sulfoglutaroyl, 3- (4-sulfophenyl) glutaroyl * moieties, the aromatic dicarbonyl moieties in which the aromatic residue is a phenylene radical or a bivalent radical consisting of a combination of several cores ortho- or peri-condensed benzenes or linked together by inert groups, such as the simple valence bond, the alkylene radical, the oxy group, the oxo group, the sulfonyl group, said aromatic residue has at least one sulfo-linked substituent at a carbon atom, such as sulfophthaloyl, sulfoterephthaloyl, sulfoisophthaloyl, sulfo-orthophthaloyl, sulfonaphthalenedicarbonyl, disulfo- and trisulfo-naphthalenyl moieties arbonyl, 5- (4-sulfophenoxy) -isophthaloyl, 5- (2-sulfophenyl) -isophthaloyl, 5- (4-sulfophenoxy) -isophthaloyl, sulfo-diphenyl-dicarbonyl, sulfodiphenylsulfon-4,4'-dicarbonyl, sulfodiphenylmethane-4 , 4 '-dicarbonyl * the portions with oxy, aliphatic groups, in which the aliphatic residue contains from 2 to 10 carbon atoms and having at least one sulfo substituent directly linked to a carbon atom, such as portions 2, 3 -dioxypropanesulfonic acid, 1,5-dioxypentan-3-sulphonic acid, or indirectly as the 2,3-dioxypropane-poly (oxyethylene) -sulfonic, 2,3-dioxypropane-poly (oxyethylene) -phenolsulfonic, * portions with oxy-groups and carbonyl, aliphatic, in which the aliphatic residue contains from 2 to 10 carbon atoms, and which have at least one sulfo substituent bonded to a carbon atom, such as the 3-oxysulfopropionoyl, 5-oxy-3-sulfopentanoyl portions * the portions with imino, aromatic groups that present at least one their sulfur ligand bonded to a carbon atom, such as the sulfoparaphenylene diimino moieties. Among the possible non-sulfonated polyfunctional moieties, the moieties with imino, aliphatic groups can be mentioned, where the aliphatic residue is a linear or branched alkylene group containing from 2 to 50, preferably from 2 to 20, carbon atoms and can be interrupted with one or more heteroatoms of oxygen or tertiary nitrogen, such as the ethylenediimino, tetramethylenediimino, hexamethylenediimino, 3-oxa-pentamethylenediimino, 3,6-dioxa-octamethylene-l, 8 -diimino * portions with imino, aromatic groups, such as the para-phenylenedimino moiety * the portions with oxy, aliphatic or cycloaliphatic groups such as the oxyalkylenoxy moieties where the alkylene moiety is straight or branched or oxycycloalkyleneoxy, and contains from 2 to 12, preferably from 2 to 6 carbon atoms as the oxyethyleneoxy moieties; , 3-propanedioxy, oxypropylexy, 2,2-propanedimethoxy, 1,4-cyclohexanedimethoxy and their higher homologues oxy [poly (cyclo) alkyleneoxy] ] containing from 2 to 150 (cyclo) alkyleneoxy, alkanthioxy groups containing from 3 to 6 carbon atoms such as 1,2,3-propanedioxy, 1,2,4-butanedioxy and their poly (alkanthioxy) higher homologs contain from 2 to 10 alkatrioxy portions, * the aliphatic, aromatic, heterocyclic portions with oxy and imino groups, where the aliphatic, aromatic, heterocyclic residues contain from 2 to 20 carbon atoms, such as the 5-iminopentanoxy-1 moieties, 4-iminomethylcyclohexanmethoxy, 5-imino-2-ethylpentanoxy, oxy isophthalic-diimino * the hydrocarbyl and / or carboxyl substituted dicarbonyls, such as propan-2-hydroxy-2-carboxy-dicarbonyl. The unit (PAS) preferably comprises the portions corresponding to the aliphatic polyamides of the type PA 4, PA 6, PA 10, PA 11, PA 12, PA 6.6, PA 4.6, PA 10.6 and also contain the sulfonated portions, preferably dicarbonyl sulphonated (sulfosuccinoyl or sulfoisophthaloyl mainly), all or part of the unsulfonated aliphatic dicarbonyl portions can be replaced with aromatic dicarbonyl portions. Each polyoxyalkylene unit (POA) can be linked to a sulfonated polyamide unit (PAS) by intermediation of similar or different linking groups comprising at least one heteroatom N, O, S; such linking groups may be the amides, esters, carbamates, oxy, ureylene, thio groups, etc. Said copolymers (C) can be obtained by: the reaction between a sulfonated polyamide prepolymer (PP1) containing the unit (PAS) with acid and / or amine terminations with a polyoxyalkylenated prepolymer (PP2) containing the unit (POA) where the less a termination is capable of reacting with the acid and / or amine endings of said prepolymer (PP1), either directly, or by means of an agent capable of forming a bridge, then eventually the reaction with a compound capable of consuming the amino functional groups -NH2. The sulfonated polyamide prepolymer (PP1) can be prepared in a known manner, with control of the degree of advancement of the polycondensation to obtain a prepolymer of desired molecular mass and putting in operation preferably an excess of diacid monomer in order to favor the formation of acid terminations.

As examples of polyoxyalkylenated prepolymer (PP2) where at least one termination is capable of reacting with the acid and / or amine terminations of said prepolymer (PP1), there may be mentioned those having at least one alcohol, amine, acid, epoxy termination, urethane, etc., as for example: polyoxypropylene- and / or polyoxyethylene-diamines or triamines, such as JEFFAMINES® D, ED, EDR and T marketed by HUNTS AN having a molecular mass of the order of 1,500 to 5,000. polyethylene glycols, polypropylene glycols, copolymers of ethylene glycol and propylene glycol sequenced or statistically having a molecular mass of the order of 200 to 10,000, such as PLURONICS PE from BASF polyoxyethylene and / or polyoxypropylene diepoxics having a molecular weight of the order of 300 to 5,000, • the polyoxyethylene and / or polyoxypropylene diisocyanates having a molecular weight in the range of 3,000 to 5,000 polyoxyethylenes and / or dicarboxylic polyoxypropylenes having a molecular mass of the order of 3,000 to 5,000 id methoxypolyoxypropylene and / or polyoxyethylene monoamines, such as JEFFAMINES marketed by HUNTS AN, which have a molecular mass of the order of 90 to 5,000 • methoxypolyoxypropylene and / or polyoxyethylene monohydroxy, which have a molecular mass in the range of 1,000 to 25,000 methoxypolyoxypropylene and / or polyoxyethylenemonocarboxy, which have a molecular mass in the order of 5,000 methoxypolyoxypropylene and / or polyoxyethylene monoisocyanates, which have a molecular mass of the order of 3,000 to 5,000. The proportion of functional groups S03M, expressed in mass of the functional group S03-, in said sulfonated polyamide prepolymer (PPl) is such that it represents at least 0.1%, preferably at least 0.2%, more particularly at least 0.4%, mainly of 0. 4 to 15% of the total mass of the sulfonated polyamide prepolymer (PPl) and the polyoxyalkylenated prepolymer (PP2). The respective amounts of the polymer (PP2) and (PP1) are such that the mass ratio of (PP2) / mass of (PP1) is 95/5 to 30/70, preferably 90/10 to 40/60, more particularly from 85/15 to 50/50.

Among the compounds capable of consuming the amino-NH2 functional groups, we can mention: carboxylic acids, such as succinic acid, isophthalic acid, sodium sulfonate - carboxylic anhydrides, such as succinic anhydride, phthalic anhydride, maleic anhydride mono- or poly-functional epoxies such as epoxyalkanes containing from 4 to 18 carbon atoms monoisocyanates, such as dodecane isocyanate quaternary acrylates or methacrylates, such as MATQUAT from Atochem. These can be put into operation according to an amount such that the amount of functional groups -NH optionally present in the final copolymer does not represent more than 80 milliequivalents per kilogram of final copolymer. Said copolymer (C) can also be obtained, and this in a preferred manner, by polycondensation of the monomers (M) from which the unit (PAS) is derived in the presence of a prepolymer (PP) containing the polyoxyalkylene unit (POA) and which includes functional portions or groups capable of condensing or reacting with at least one of said monomers, and optionally the post-reaction with an amino-NH2 functional group-consuming agent. Among the non-sulfonated dicarboxylic monomers (MDC) capable of forming the non-sulfonated polyfunctional moieties (mNS1) by condensation with a diamine, the non-sulfonated polyfunctional moieties (mNS3) by condensation with a lactam or capable of forming unsulfonated dicarbonyl moieties (mD) optional, mention may be made of: the aromatic dicarboxylic acids wherein the aromatic residue is optionally substituted by at least one alkyl radical containing from 1 to 4 carbon atoms, a hydroxyl radical, such as phthalic, terephthalic, isophthalic, orthophthalic acids, anthracene-, 1, 8-naphthalene-, 1, 4 -naphthalene-, biphenyl-dicarboxylic acids, 5-hydroxy-isophthalic acids, 4-hydroxy-isophthalic acids, 4-hydroxy-phthalic acids, aliphatic or cycloaliphatic dicarboxylic acids, the aliphatic or cycloaliphatic residue contains from 4 to 10 carbon atoms, such as adipic, glutaric, succinic, trimethyladipic, pimelic, azelaic, sebacic, suberic, itaconic, maleic, fumaric acids, cyclopentandicarboxylic acids, cyclohexanedicarboxylic acids, acids 2- hydroxy-methylsuccinic, hydroxymethylglutaric, hydroxyglutaric. Among the non-sulfonated diamine monomers (MDA) capable of forming the non-sulfonated polyfunctional portions (mNS1) by condensation with an unsulfonated dicarboxylic monomer, or the non-sulfonated polyfunctional portions (mNS4) by condensation with a lactam, may be mentioned: aliphatic diamines containing 2 to 50 carbon atoms such as alkylene diamines, wherein the linear, branched or cyclic alkylene group is optionally interrupted with one or more oxygen or tertiary nitrogen heteroatoms, such as ethylenediamine, tetramethylenediamine, hexamethylenediamine, 3 -oxa-pentamethylenediamine, 3,6- dioxa-octamethylene-1, 8-diamine aromatic diamines, in which the aromatic residue is a phenylene radical or a bivalent radical consisting of a combination of several benzene nuclei ortho- or peri-condensed or linked together by inert groups, such as the simple valence bond, the alkylene radical, the oxy group, the oxo group, the sulfonyl group, as the rilendiamines such as paraphenylenediamine, diaminodiphenylmethane, where the phenyl residues are optionally substituted with an alkyl radical of 2 to 3 carbon atoms. Among the non-sulfonated amino acid monomers (MAA) capable of forming non-sulfonated polyfunctional moieties (mNS2), the non-sulfonated polyfunctional moieties (mNS3) or (mNS4) by condensation with an unsulfonated dicarboxylic monomer or an unsulfonated diamino monomer, may be mentioned : monocarboxylic aromatic amino acids, aliphatic, heterocyclic, containing from 2 to 20 carbon atoms, and their lactams such as 6-aminocaproic acid, caprolactam, 3-amino-2-dimethylpropionic acid, 4 - (ß- aminoethyl) enzoic, lauryl-lactam. Among the sulfonated monomers (MS) capable of forming sulfonated polyfunctional moieties (mS), there may be mentioned: those having two reactive carbonyl functional groups such as: * aromatic dicarboxylic acids, where the aromatic residue is a phenylene radical or a bivalent radical formed of a combination of several ortho- or peri-condensed benzene cores or linked together by inert groups, such as the single valence bond, the alkylene radical, the oxy group, the oxo group, the sulfonyl group, and is optionally substituted by at least one hydroxyl substituent radical, such as sulfophthalic, sulfoterephthalic, sulphoisophthalic, sulfo-orthophthalic, 4-sulfonaphthalene-2,7-dicarboxylic, 5- (4-sulfophenyl) -isophthalic, 5- (2-sulphoxyl) -isophthalic acid , 5- (4-sulfophenoxy) -isophthalic acid, sulfo-bis (idroxycarbonyl) -4,4 '-diphenylsulphones, sulfo-di-phenyl-dicarboxylic acids, sulfofenild icarboxybenzenesulfonates, the sulfo-bis (hydroxycarbonyl) -4,4 '-diphenylmethanes, the sulfo-phenoxy-5-isophthalic acids and more generally those described in U.S. Patent No. 3,734,874, * the aliphatic dicarboxylic acids wherein the aliphatic residue contains from 2 to 10 carbon atoms and is optionally substituted with an aryl radical, phenyl primarily, such as sulfosuccinic, 3-sulfoglutaric, 3- (4-sulfophenyl) glutaric acids, etc. in the form of acids or esters of 1 to 4 carbon atoms those having two reactive hydroxyl functional groups such as sulfoaliphatic diols where the aliphatic residue contains from 2 to 10 carbon atoms, such as 2,3-dihydroxypropanesulfonic acids, , 5-dihydroxypentan-3-sulphonic, the aliphatic diols containing 2 to 3 carbon atoms substituted with the poly (oxyethylene) -sulfonic or poly (oxyethylene) -phenol-sulphonic groups, such as the 1,2-polypropanediols ( oxyethylene) sulfonic acids and 1,2-propanediols poly (oxyethylene) -phenol sulfonic acids having a hydroxyl functional group and a reactive carboxyl functional group such as aliphatic hydroxy acids where the aliphatic residue contains from 2 to 10 carbon atoms, such as 3-hydroxysulfopropionic acids, 5-hydroxy-3-sulfopentanoic acid - those that have two amino functional groups, such as 2,5-diaminobenzenesulfonic acid. Preferred sulfonated monomers (MS) are sulfo-isophthalic and sulfo-succinic acids. Among the non-sulfonated monomers (MP) capable of forming non-sulfonated polyfunctional moieties (mP), there may be mentioned: diols or triols containing from 2 to 20 carbon atoms such as: * ethylene glycol and its higher homologs which may contain up to 20 oxyethylene portions, in particular ethylene glycol, diethylene glycol and triethylene glycol * linear or branched alkylene glycols which may contain up to 150 carbon atoms optionally interrupted with one or more oxygen heteroatoms, such as 1,3-propanediol, propylene glycol, dipropylene glycol, 2, 2 -dimethylolpropane, 1,4-cyclohexanedimethanol, * glycerol, 1,2,4-butanetriol and 1,2,3-butanetriol and their higher homologs which may contain up to 10 repeating portions • aliphatic hydroxycarboxylic acids containing to 10 carbon atoms such as 3-hydroxypropionic acid, 4-hydroxybutyric acid, citric acid, 4-hydroxyisophthalic acid, 2, 5-dihydric acid droxyterephthalic aliphatic, aromatic, heterocyclic aminoalcohols containing from 2 to 20 carbon atoms such as 5-aminopentan-1-ol, 4-aminomethyl-cyclohexanmethanol, 5-amino-2-ethylpentanol. The monomers (M) are preferably selected from those where the aliphatic polyamides of the type PA 4, PA 6, PA 10, PA 11, PA 12, PA 6.6, PA 4.6, PA 10.6 are derived and which also comprise the sulfonated monomers, Preference is given to sulfonated dicarboxylic acids (mainly sulfosuccinic or sulphoisophthalic acids), all or part of the unsulfonated aliphatic dicarboxylic acids which can be replaced with aromatic dicarboxylic acids. Among the prepolymers (PP) having a polyoxyalkylene chain (POA) having portions capable of condensing or reacting with at least one of said monomers from which the sulfonated polyamide is derived, those comprising from 2 to 200, preferably from 5 to 150 similar or different oxyalkylene portions, wherein the linear or branched alkylene residue contains from 2 to 12, preferably from 2 to 6 carbon atoms, more particularly 2 or 3 carbon atoms, and having at least one alcohol termination, amine, acid, epoxy, urethane, etc., such as polyoxypropylene- and / or polyoxyethylene-diamines or triamines, such as JEFFAMINES® D, ED, EDR and T marketed by HUNTSMAN with a molecular mass in the order of 1,500 to 5,000 • polyethylene glycols, polypropylene glycols, ethylene glycol and propylene glycol copolymers sequenced or statistically having a molecular mass of the order of 200 to 10,000, such as PLURON ICS PE of BASF polyoxyethylene- and / or polyoxypropylene-diepoxy having a molecular weight in the range of 300 to 5,000 polyoxyethylene- and / or polyoxypropylene diisocyanates with a molecular mass in the range of 3,000 to 5,000, polyoxyethylene and / or polyoxypropylene dicarboxylic acids having a molecular weight of the order of 3,000 to 5,000, methoxypolyoxypropylene and / or polyoxyethylene monoamines, such as JEFFAMINES marketed by HUNTSMAN, which have a molecular mass in the range of 90 to 5,000, methoxypolyoxypropylene and / or polyoxyethylene monohydroxy, which have a molecular mass of the order of 1,000 to 25,000, the methoxypolyoxypropylene and / or polyoxyethylene monocarboxy, which have a molecular mass of the order of 5,000, the methoxypolyoxypropylene and / or polyoxyethylene monoisocyanates, which have a molecular mass of the order of 3,000. to 5,000. The polycondensation operation of the monomers (M) where the unit (PAS) is derived in the presence of said prepolymer (PP) containing the polyoxyalkylene unit (POA) can be carried out: by contacting the prepolymer (PP) and different monomers (M), in the form of powder, in the liquid form, or in aqueous solution, * the relative amounts of the different monomers (M) are such that the molar ratio in number of their carboxylic functional groups / number of their functional groups amines is at least 1, preferably at least 1.05, more particularly at least 1.1, * the amount of sulphonated monomer, expressed as a mass of S03, is such that it represents at least 0.1%, preferably at least 0.2%, more particularly at least 0.4%, mainly from 0.4 to 15% of the total mass of the monomers (M) and prepolymer (PP) put into operation * the relative amounts of the prepolymer (PP) and the monomers (M) are such that the proportion mass of the prepolymer (PP) / mass of the whole of the monomers (M) is from 95/5 to 30/70, preferably from 90/10 to 40/60, more particularly from 85/15 to 50/50 then the polycondensation itself under an inert atmosphere, at a temperature of the order of 190 at 280 ° C, preferably of the order of 220 to 270 ° C, with distillation of the water formed, and optionally the post-condensation or post-reaction of the copolymer formed with a compound consuming the amino functional groups -NH2, in such quantity that the amount of functional groups -NH2 optionally present in the final copolymer does not represent more than 80 milliequivalents per kilogram of the final copolymer. The contacting operation can be carried out at a temperature that can range from room temperature to 100 ° C. The actual polycondensation operation can be carried out in the presence of a polyamidification catalyst; there may be mentioned, in particular, hypophosphorous acid, phenylphosphinic acid, phenylphosphonic acid or tris (nonylphenyl) phosphite; it can be present according to an amount that can be up to 1%, preferably up to 0.5% by weight, based on the total weight of the prepolymer (PP) and the monomers (M). This operation is preferably carried out in stages, a step of raising the temperature, for example from room temperature to 280 ° C, preferably up to 270 ° C, at a high atmospheric pressure; this stage lasts in general from 3 to 7 hours, during which the water distills, a rest in these same conditions, with a duration in general of the order of 10 minutes to 2 hours, preferably 1 hour, a rest to it temperature, under reduced pressure (less than 100 mbar, preferably from 2 to 3 mbar) for a duration in general of the order of 1 to 3 hours before putting under atmospheric pressure and cooling the obtained copolymer. If necessary, a postcondensation stage can be carried out with the help of the compounds capable of consuming the amino functional groups -NH, to eliminate at least partially the functional -NH2 groups present. Among the compounds capable of consuming the amino-NH2 functional groups, we can mention: carboxylic acids, such as succinic acid, isophthalic acid-sodium sulfonate, - carboxylic anhydrides, such as succinic anhydride, phthalic anhydride, anhydride maleic, mono- or poly-functional epoxies such as epoxyalkanes containing from 4 to 18 carbon atoms, monoisocyanates, such as dodecane isocyanate, quaternary acrylates or methacrylates, such as MATQUAT from Atochem. These can be put into operation according to an amount such that the amount of functional groups -NH2 optionally present in the final copolymer does not represent more than 80 milliequivalents per kilogram of final copolymer. A second objective of the invention consists of a detergent for hard surfaces or textiles, mainly a synthetic polymer, more particularly textile surfaces of polyamide, and / or an agent capable of providing said surfaces with the properties of resistance to stains. (stain resistance) and / or which facilitate the removal of stains and dirt (soil reléase) from said surfaces, the agent comprises at least one of the water-soluble or water-dispersible copolymers (C) described above. A third objective of the invention consists in the use of said copolymer (C) as a detergent for hard surfaces or textiles, mainly of synthetic polymer, more particularly of textile surfaces in polyamide, and / or as an agent capable of providing said surfaces the properties of stain resistance and / or that allow to facilitate the elimination of stains and dirt (soil reléase) of said surfaces. A fourth object of the invention consists of a process for cleaning hard or textile surfaces, mainly of synthetic polymer, more particularly the polyamide textile surfaces, and / or for providing said surfaces with the properties of resistance to stains and / or facilitate the removal of stains and dirt from said surfaces, by non-permanent treatment of said surfaces with the aid of the copolymer (C) in aqueous solution or dispersion. The copolymer (C) can be put into operation in solid formulations or liquid aqueous cleaning and / or treatment formulations; said formulations may contain from 0.05 to 10, preferably from 0.1 to 2% by weight of copolymer (C). A first embodiment consists of cleaning and / or treating the hard surfaces with the aid of said copolymer (C). Hard surfaces can be ceramic, glass, porcelain, etc. surfaces. Mention may be made, for example, of the use of the copolymer either in aqueous solution or in an aqueous formulation, for cleaning dishes, bathrooms, kitchens, etc. % A particular aspect of this invention refers to the aqueous compositions of rinse of shower walls (aqueous shower rinsing compositions by its meaning in English) and the methods to keep said walls clean. U.S. Patent Nos. 5,536,452 and 5,587,022 describe the compositions and methods similar to those of the present invention. Thus, for a general description of the aqueous rinse compositions of shower walls (abbreviated "showers") and the methods for their application, the disclosures of U.S. Patent Nos. 5,536,452 and 5,587,022 are incorporated by reference in the present description. These walls can be made of porcelain, ceramic tiles, plexiglas, glass fibers, etc. The main active components of the aqueous rinse compositions of the showers of the present invention are at least one surfactant described below, a metal chelating agent, and a polyamide also referred to below as copolymer (C). Preferred metal chelating agents are ethylenediaminetetraacetic acid (EDTA) and the like. Aqueous shower rinse compositions typically contain water optionally with at least one lower alcohol according to a significant amount, and each of the active constituents according to smaller amounts, typically said small amounts are comprised between about 0.5% and about 3% by weight , and still more typically between about 1% and about 2% by weight. Certain surfactants usable in the present invention are described in U.S. Patent Nos. 5,536,452 and 5,587,022 incorporated by reference in the present disclosure. Still more useful surfactants are described in U.S. Patent Nos. 60 / 086,113 filed May 20, 1998 and U.S. Patent No. 60 / 098,148 filed August 27, 1998, the descriptions of which are incorporated herein by reference. by reference in the present description. The still more useful surfactants are characterized as fatty ester ethoxylates, for example the ethoxylated sorbitan monooleates and ethoxylated castor oil. Specific examples of such surfactants are sorbitan monooleate with 20 moles of ethylene oxide (marketed by Rhodia Inc. Under the name ALKAMULS PSMO-20 with a HLB of 15.0) castor oils with 30 or 40 moles of ethylene oxide (marketed by Rhodia Inc. under the name ALKAMULS EL-620 (HLB of 12.0) and EL-719 (HLB of 13.6), respectively). The degree of ethoxylation is preferably sufficient to obtain a surfactant having an HLB above 13. The copolymers (C) can be used in aqueous shower wall rinse compositions according to an amount of 0.05% to about 10. % by weight, more typically from about 0.1% to about 2% by weight of the aqueous shower rinse composition. Said compositions can be applied by spraying on the surface of the shower walls, after the previous humidification with water of said walls. A second embodiment consists of cleaning and / or treating the textile surfaces with the aid of said copolymer (C). Preferably, the textile surfaces are made of a synthetic organic polymer, mainly polyamide; more particularly these are textile surfaces such as carpets, carpets, fabrics, clothing, underwear, furniture, sporting goods, etc., of synthetic organic polymer, mainly polyamide. Said copolymer (C) makes it possible to add to these textile surfaces properties of hydrophobicity, of resistance to stains, mainly to greasy stains (wax, ballpoint, lipstick, oil, etc.) or watery (coffee, etc.). ). This also makes it possible to eliminate these stains and eliminate dirt, especially those transported by shoe soles (dust, clay, earth, etc.). The copolymers (C) or the compositions or formulations comprising said copolymers (C), placed in aqueous solution or dispersion (before or during the treatment), can be deposited on the textile surfaces by pouring with eventual rubbing, by vaporization, by application with the aid of an apparatus, by washing and / or rinsing and / or softening, by hand or by machine. These can also, after impregnation of a support in a cellulosic material for example, be deposited by contact in a drying machine of said textile surfaces. A particular aspect relates to solid or liquid compositions for washing and / or rinsing and / or softening of canvases or garments, by hand or by machine. The copolymer (C) makes it possible to add hydrophilicity to canvases or clothing, which results in an improvement in the permeability of the synthetic textile material with water vapor and thus a better comfort on contact of the skin. Said compositions for washing and / or rinsing and / or softening linen or garments can contain from 0.05 to 10, preferably from 0.1 to 2% by weight of the copolymer (C). Washing compositions may further comprise: anionic surfactants such as: alkyl esters-sulfonates of formula R-CH (S03M) -COOR ', wherein R represents an alkyl radical of 8 to 20 carbon atoms, preferably 10 to 16 carbon atoms, R 'represents an alkyl radical of 1 to 6 carbon atoms, preferably of 1 to 3 carbon atoms and M is an alkali cation (sodium, potassium, lithium), substituted or unsubstituted ammonium (methyl- , dimethyl-, trimethyl-, tetramethyl-ammonium, dimethylpiperidinium, etc.) or derivative of an alkanolamine (monoethanolamine, diethanolamine, triethanolamine, etc.); • the alkyl sulfates of the formula ROS03M, where R represents an alkyl or hydroxyalkyl radical of 5 to 24 carbon atoms, preferably of 10 to 18 carbon atoms, M represents a hydrogen atom or a cation of the same definition as described above , as well as its ethoxylated (OE) and / or propoxylated (OP) derivatives, which present on average 0.5 to 30 portions, preferably 0.5 to 10 OE and / or OP portions; alkylamide sulfates of formula RCONHR'OS03M where R represents an alkyl radical of 2 to 22 carbon atoms, preferably of 6 to 20 carbon atoms, R 'represents an alkyl radical of 2 to 3 carbon atoms, M represents an hydrogen atom or a cation of the same definition as described above, as well as its ethoxylated (OE) and / or propoxylenated (OP) derivatives, which have on average 0.5 to 60 OE and / or OP portions; salts of saturated or unsaturated fatty acids of 8 to 24 carbon atoms, preferably of 14 to 20 carbon atoms, alkylbenzene sulfonates of 9 to 20 carbon atoms, primary or secondary alkyl sulfonates of 8 to 22 carbon atoms, Alkylglycerol sulphonates, the sulfonated polycarboxylic acids described in British Patent GB-A-1,082,179, paraffin sulphonates, N-acyl-N-alkyltaurates, alkyl phosphates, isethionates, alkylsuccinamates, alkylsulphosuccinates, monoesters or diesters of sulfosuccinates, N-acyl-sarcosinates, alkylglycoside sulfates, polyethoxycarboxylates; the cation being an alkali metal (sodium, potassium, lithium), a substituted or unsubstituted ammonium residue (methyl-, dimethyl-, trimethyl-, tetramethyl-ammonium, dimethylpiperidinium, etc.) or an alkanolamine derivative (monoethanolamine, diethanolamine , triethanolamine, etc.), with nonionic surfactants such as: polyoxyalkylenated alkylphenols (polyethoxyethylenated, polyoxypropylenated, polyoxybutylenated) wherein the alkyl alkyl substituent is from 6 to 12 carbon atoms and contains from 5 to 25 oxyalkylene portions; by way of example, TRITON X-45, X-114, X-100 or X-102 marketed by Rohm & Haas Cy., The IGEPAL NP2 to NP17 of RHODIA, the aliphatic alcohols of 8 to 22 polyoxyalkylenated carbon atoms containing from 1 to 25 oxyalkylenated portions (oxyethylene, oxypropylene); by way of example, mention may be made of TERGITOL 15-S-9, TERGITOL 24-L-6 NMW marketed by Union Carbide Corp., NEODOL 45-9, NEODOL 23-65, NEODOL 45-7, NEODOL 45-4 marketed by Shell Chemical Cy, KYRO EOB marketed by The Procter & Gamble Cy, the SYNPERONIC A3 to A9 of ICI, the RHODASURFT IT, DB and B of RHODIA; the products resulting from the condensation of ethylene oxide or propylene oxide with propylene glycol, ethylene glycol, of molecular weight by weight in the order of 2,000 to 10,000, such as the PLURONIC marketed by BASF; the products resulting from the condensation of ethylene oxide or propylene oxide with ethylene diamine, such as the TETRONIC marketed by BASF; • ethoxylated and / or propoxylated fatty acids of 8 to 18 carbon atoms containing from 5 to 25 ethoxylated and / or propoxylated portions; amides of fatty acids of 8 to 20 carbon atoms containing from 5 to 30 ethoxylated portions; the ethoxylated amines containing from 5 to 30 ethoxylated portions; the alkoxylated amidoamines containing from 1 to 50, preferably from 1 to 25, more particularly from 2 to 20, oxyalkylene (preferably oxyethylene); amine oxides such as oxides of (C 10 -C 18 alkyl) -dimethylamines, oxides of (C 8 -C 22 alkoxy) -ethyl-dihydroxy-ethylamines; the alkoxylated terpene hydrocarbons such as ethoxylated and / or propoxylated α- or β-pinenes, containing from 1 to 30 oxyethylene and / or oxypropylene portions; • the alkyl polyglucosides which can be obtained by condensation (for example by acid catalysis) of glucose with the primary fatty alcohols (US-A-3,598,865; US-A-4,565,647; EP-A-132, 043; A-132, 046, etc.) having an alkyl group of 4 to 20 carbon atoms, preferably 8 to 18 carbon atoms, as well as an average number of glucose portions of the order of 0.5 to 3, preferably order of 1.1 to 1.8 per mole of alkyl polyglucoside (APG); Mention may be made mainly of those having: * an alkyl group of 8 to 14 carbon atoms and on average 1.4 glucose per mole * an alkyl group of 12 to 14 carbon atoms and an average of 1.4 glucose per mole * an alkyl group of 8 to 14 carbon atoms and an average of 1.5 glucose portions per mol * an alkyl group of 8 to 10 carbon atoms and on average 1.6 glucose portions per mol marketed respectively under the names GLUCOPON 600 EC® , GLUCOPON 600 CSUP®, GLUCOPON 650 EC®, GLUCOPON 225 CSUP®, by HENKEL, and / or with amphoteric and zwitterionic surfactants, such as alkylbetaines, alkyldimethylbetaines, alkylamidopropylbetaines, alkylamidopropyl dimethylbetaines, alkyltrimethylsulfobetaines, imidazoline derivatives such as alkylamphoacetates, alkylampheracetates, alkylamphopropionates, alkylamphopropionates, alkylsultaines or alkylamino dopropy-hydroxysultaines, the condensation products of fatty acids and protein hydrolysates, the amphoteric derivatives of alkylpolyamines such as Amphionic XL® marketed by Rhodia, Ampholac 7T / X® and Ampholac 7C / X® marketed by Berol Nobel, proteins or hydrolysates of proteins; and / or with cationic surfactants, such as dialkyldimethylammonium chlorides, alkylbenzyldimethylammonium chlorides, methyl and alkylimidazolinium sulfates, methyl sulfates and methyl bis (alkylamidoethyl) -2-hydroxyethylammonium sulfates; said surfactants are put into operation in an amount of the order of 5 to 70%, preferably 5 to 50% by weight of said composition; mineral or organic detergency builders ("additives"), in an amount such that the total amount of detergency builder is in the range of 5 to 80% by weight of the composition, detergency builders such as: polyphosphates (tripolyphosphates, pyrophosphates , orthophosphates, hexametaphosphates) of alkali metals, ammonium or alkanolamines, tetraborates or borate precursors, alkali metal or alkaline earth metal carbonates (bicarbonates, sesquicarbonates), alkali metal silicates cogranulates of hydrated alkali metal silicates and alkali metal carbonates (sodium or potassium) described in the European Patent EP-A-488, 868, for powder detergent compositions, crystalline or amorphous aluminosilicates of alkali metals (sodium, potassium) or ammonium, such as zeolites A, P, X, etc. water-soluble polyphosphonates (ethan-1-hydroxy-1,1-diphosphonates, salts of methylene diphosphonates, etc.); water-soluble salts of carboxylic polymers or copolymers such as water-soluble salts of polycarboxylic acids of molecular weight of the order of 2,000 to 100,000, obtained by polymerization or copolymerization of ethylenically unsaturated carboxylic acids such as acrylic acid, maleic acid or anhydride, fumaric acid, itaconic acid, mesaconic acid, citraconic acid, methylenemalonic acid, and more particularly polyacrylates of molecular mass of the order of 2,000 to 10,000 ( US-A-3, 308, 067), the copolymers of acrylic acid and maleic anhydride of molecular weight of the order of 5,000 to 75,000 (European Patent EP-A-66,915) the polycarboxylated ethers (oxydisuccinic acid and its salts, monosuccinic tartrate acid and its salts, disuccinic acid tartrate and its salts), - hydroxypolycarboxylate ethers, citric acid and its salts, mellitic acid, succinic acid and its salts, salts of polyacetic acids (ethylenediaminetetraacetates, nitrilotriacetates, N- (2-hydroxyethyl) -nitrilodiacetates), acids (alkyl of 5 to 20 carbon atoms) -succinic substances and their salts, 2-dodecenylsuccinates, lauryl succinates, etc.) polyacetal carboxylic esters, polyaspartic acid, polyglutamic acid and its salts, polyimides derived from the polycondensation of aspartic acid and / or glutamic acid, - the polycarboxymethylated derivatives of glutamic acid [such as N, N-bis (carboxymethyl) glutamic acid and its salts, mainly sodium] or other amino acids, aminophosphonates such as nitrilotris (methylene phosphonates), the different anti-dirt agents , in amounts of the order of 0.01-10%, preferably of the order of 0.1 to 5%, and more particularly of the order of 0.2-3% by weight, agents such as: the cellulose derivatives such as cellulose hydroxyethers, methylcellulose, ethylcellulose, hydroxypropylmethylcellulose, hydroxybutylmethylcellulose, - polyvinyl esters grafted on polyalkylene chains such as polyvinylacetates grafted onto polyoxyethylene stretches (EP-A-219, 048), polyvinyl alcohols, polyester copolymers based on portions of ethylene terephthalate and / or propylene terephthalate and polyoxyethylene terephthalate, which optionally include sulfoisophthaloyl portions in their chain, polyester copolymers based on portions of ethylene terephthalate and / or propylene terephthalate and polyoxyethylene and / or polyoxypropylene, the terephthalic copolyester oligomers with sulfonated polyalkyleneoxyalkyls, sulfoaroyls, the terephthalic copolyester oligomers containing sulfoisophthaloyl moieties in their chain; antiredeposition agents, in amounts of about 0.01 to 10% by weight for a detergent composition in powder, of about 0.01 to 5% by weight for a liquid detergent composition, agents such as: carboxymethylcellulose, sulfonated polyester oligomers obtained by condensation of the isophthalic acid, dimethyl sulfosuccinate and diethylene glycol (French Patent FR-A-2, 236, 926); the water-soluble salts of polymers or carboxylic copolymers such as the salts of polyacrylic acid, the copolymers of acrylic acid and maleic anhydride; whitening agents, in an amount of about 0.1 to 20%, preferably 1 to 10% by weight of the detergent composition, powder, such as: perborates such as sodium perborate monohydrate or tetrahydrate, peroxygen compounds such such as sodium carbonate peroxyhydrate, pyrophosphate peroxyhydrate, urea peroxyhydrate, sodium peroxide, sodium persulfate, percarboxylic acids and their salts (called "percarbonates"), preferably associated with a whitening activator that generates in itself you in the leaching medium, a carboxylic peroxyacid; among these activators, we can mention tetraacetylethylene diamine, tetraacetylmethylenediamine, tetraacetylglucoluril, sodium p-acetoxybenzenesulfonate, pentaacetylglucose, octaacetyl lactose, etc. the suppressive agents of the foams, in amounts that can go up to 5% by weight, agents such as: the monocarboxylic fatty acids of 10 to 24 carbon atoms or their alkali salts, of ammonium or of alkanolamines, the triglycerides of fatty acids , saturated or unsaturated aliphatic, alicyclic, aromatic or heterocyclic hydrocarbons, such as paraffins, waxes, - N-alkylaminotriazines, monostearyl phosphates, mono-stearyl alcohol phosphates, polyorganosiloxane oils or resins optionally combined with silica particles softening agents, in amounts of about 0.5-10% by weight, agents such as clays, enzymes in an amount that can go up to 5 mg by weight, preferably of the order of 0.05-3 mg of active enzyme / g of detergent composition, enzymes such such as proteases, amylases, lipases, peroxidases, cellulase, color transfer inhibiting agents, fluo agents resins and other additives such as: alcohols (methanol, ethanol, propanol, isopropanol, propanediol, ethylene glycol, glycerin), buffering agents or fillers such as sodium sulfate, carbonates or bicarbonates of alkaline earth metals, pigments. The rinsing and / or softening compositions may comprise, at the cost of the copolymer (C) at least one cationic surfactant in an amount ranging from 5 to 70%, optionally at least one nonionic surfactant in an amount of up to 10%, optical brighteners, dyes, perfumes, sequestrants ("additives"). These compositions are preferably liquid. A last particular aspect consists in the cleaning and / or the treatment of carpets or carpets. The copolymer (C) in aqueous solution or dispersion can be used more particularly in the formulations for mats or carpets, as a detergent agent, and / or as an agent that provides resistance against stains and / or as an agent that facilitates the removal of stains . This can be deposited on the surface to be treated by vaporization, by application with the aid of a shampoo applicator, with the aid of an injection-extraction apparatus of the solution comprising the copolymer, or by simply pouring the copolymer solution onto the surface. treat, with eventual rubbing with the help of a sponge or a brush. Said formulations may contain from 0.1 to 10, preferably from 0.1 to 2% by weight of the copolymer (C). The formulations can optionally be diluted before use. The copolymer (C) can be put into operation according to the amounts, expressed as dry matter, of the order of 0.01 to 5, preferably 0.05 to 3 g / m2 of surface. The composition may further comprise other additives such as anionic, and / or nonionic and / or amphoteric or zwitterionic surfactants in an amount ranging from 0.1 to 20%, detergency builders ("additives") in an amount ranging from 0.5 to 10%, acrylic polymers in an amount ranging from 0.1 to 10%, anti-dirt agents, anti-redeposition agents, perfumes, etc. These additives can be of the same type as those already mentioned above. It can also comprise alcohol solvents and whitening agents such as hydrogen peroxide. The subject of the present invention is also the solid or liquid detergent compositions comprising the copolymer (C). The following examples are given by way of illustration.

Example 1 Synthesis of a PAS / PAO copolymer containing 1% by weight of AISNa 1. Making a salt solution Jeff amine ED 2003 / Adipic acid In a 1 liter Erlenmeyer flask, weigh 475 g of water, 446.07 g (or 0.1978 mol) of Jeffamine ED 2003 (polyoxyethylene / polyoxypropylene diamine from HUNTSMAN) and 28.93 g of adipic acid (well 0.1918 mol). The mixture is stirred at room temperature for 24 hours. After the dissolution is complete, two samples, 2 g each, of the solution are taken. 48 g of water are added and then the mixture is titrated by potentiometry with a 10% w / w solution of acetic acid. Adipic acid is added in an amount necessary to reach the neutralization point of the solution (here 1332 g or 9.12 mmol); The solution is left under stirring for 24 hours. Once the dissolution is finished, two samples are taken again. A stoichiometric solution of the following composition by weight is obtained: Jeffamine ED 2003: 46.88% by weight Adipic acid: 3.18% by weight Water: 49.94% by weight Making a salt solution from Jeff amine ED 2003 / AISNa In a 1 liter Erlenmeyer flask, weigh 110 g of water, 98.26 g of Jeffamine ED 2003 (or 0.0435 mol) and 11.74 g (or 0.0438 mol) of sodium-sulfo-5-isophthalic acid (AISNa). The mixture is stirred at room temperature for 24 hours. After the dissolution is complete, two samples of 2 g each are taken from the solution. 48 g of water are added and then the mixture is titrated by potentiometry with a 10% w / w solution of AISNa. The amount of AISNa necessary to neutralize the solution is measured for each sample taken. After adding the amount of AISNa necessary to reach the neutralization point of the solution (here 0.116 g, or 0.435 mmol) the solution is still left for 24 hours under agitation. The same dosage is carried out by potentiometry in order to know if the neutralization point is reached. A stoichiometric solution of the following composition by weight is obtained: Jeffamine ED 2003: 44.64% by weight AISNa: 5.39% by weight Water: 49.97% by weight 3 . Synthesis of the PAS / POA copolymer containing 1% by weight AISNa - Copolymer 1. 3 In a glass 500 ml reactor equipped with a metal anchor stirrer, 90 g of the Jeffamine ED 2003 / Adipic acid solution prepared above, 15 g of the previously prepared Jeffamine ED2003 / AISNa salt solution are introduced and 22.52 g of caprolactam (or 0.199 mol) and 0.075 g of catalyst (50% by weight hypophosphorous acid solution).

The reactor is then closed and then 3 vacuum / argon purges are performed to remove the oxygen. The reactor is then immersed in a bath brought to 130 ° C and the temperature is increased according to a defined schedule. The temperature thus reaches 260 ° C in 3 hours during which the water distils. Retention is applied at atmospheric pressure for 1 hour and then another reduced pressure for 2 hours. After these retentions, the reaction mass is taken again under atmospheric pressure and then cooled. This is immediately extracted from the reactor. The copolymer is analyzed in terms of terminal groups (NH2 and COOH) and molecular mass. 4. Post-condensation of PAS / POA copolymer containing 1. 1% by weight of AISNa with succinic anhydride-Copolymer 1. 4 Having measured the number of groups NH2, the amount of anhydride to be added is calculated considering that a NH2 functional group reacts with an anhydride cycle. In the glass reactor, 30 g of copolymer and 0.135 g of succinic anhydride (or 0.001 mol) are introduced, the reactor is purged three times to remove oxygen. Then, the reaction mass is brought to a vacuum at 200 ° C for 2 hours. Subsequently, the reaction mass is subjected to atmospheric pressure and then cooled. This is then extracted from the reactor. The copolymer is analyzed in terms of terminal groups (NH2 and COOH).

Example 2 Synthesis of a PAS / PAO copolymer containing 4% by weight of AISNa 1. Realization of a salt solution Jeffamine ED 2003 / Adipic acid In a 1 liter Erlenmeyer flask, weigh 475 g of water, 446.07 g (or 0.1978 mol) of Jeffamine ED 2003 and 28.93 g of adipic acid (or 0.1918 mol). The mixture is stirred at room temperature for 24 hours. After the dissolution is complete, two samples, 2 g each, of the solution are taken. 48 g of water are added and then the sample is titrated by potentiometry with a 10% w / w solution of acetic acid. Adipic acid is added in an amount necessary to reach the neutralization point of the solution (here 1332 g or 9.12 mmol); The solution is immediately left under agitation for 24 hours. Once the dissolution is finished, two samples are taken again. A stoichiometric solution is obtained, with the following weight composition: Jeffamine ED 2003: 46.88% by weight Adipic acid: 3.18% by weight Water: 49.94% by weight 2 . Realization of a salt solution of Jeffamine ED 2003 / AISNa In a 1 liter Erlenmeyer flask, weigh 110 g of water, 98.26 g of Jeffamine ED 2003 (or 0.0435 mol) and 11.74 g (or 0.0438 mol) of sodium-sulfo-5-isophthalic acid (AISNa). The mixture is stirred at room temperature for 24 hours. After the dissolution is complete, two samples of 2 g each are taken from the solution. 48 g of water are added and then the mixture is titrated by potentiometry with a 10% w / w solution of AISNa. The amount of AISNa necessary to neutralize the solution is measured for each sample taken. Then the amount of AISNa necessary to reach the neutralization point of the solution is added (here 0.116 g or 0.435 mmol) the solution is left for 24 hours under agitation. The same titration by potentiometry is carried out in order to know if the neutralization point is reached. A stoichiometric solution of the following composition by weight is obtained: Jeffamine ED 2003: 44.64% by weight AISNa: 5.39% by weight Water: 49.97% by weight 3 . Synthesis of PAS / POA copolymer containing 4% by weight of AISNa -Copolymer 2. 3 In a 500 ml glass reactor equipped with a metal anchor stirrer, 54 g of the Jeffamine ED 2003 / Adipic acid solution prepared above, 57 g of the previously prepared Jeffamine ED 2003 / AISNa salt solution and 21.75 are added. g of caprolactam (or 0.192 mol) and 0.077 g of catalyst (50% by weight hypophosphorous acid solution).

The reactor is then closed and then 3 vacuum / argon purges are performed to remove the oxygen. The reactor is then immersed in a bath brought to 130 ° C and the temperature is increased according to a defined schedule. The temperature thus reaches 260 ° C in 3 hours during which the water distils. Retention at atmospheric pressure for one hour and then another at reduced pressure for 2 hours are applied. After these retentions, the reaction mass is brought back under atmospheric pressure and then cooled. This is immediately extracted from the reactor. The copolymer is analyzed in terms of terminal groups (NH2 and COOH) and molecular mass. 4. Post-condensation of the PAS / POA copolymer containing 4% by weight of AISNa with succinic anhydride-Copolymer 2. 4 Having measured the number of groups NH2, the amount of anhydride to be added is calculated considering that a NH2 functional group reacts with an anhydride cycle. In the glass reactor, 30 g of copolymer and 0.3835 g of succinic anhydride (or 0.0014 mol) are introduced, the reactor is purged three times to remove oxygen. Then, the reaction mass is brought to a vacuum at 200 ° C for 2 hours. Then, the reaction mass is brought under atmospheric pressure and then cooled. This is immediately extracted from the reactor. The copolymer is analyzed in terms of terminal groups (NH2 and COOH).

Example 3 Synthesis of a PAS / PAO copolymer containing 2% by weight of AISNa 1. Making a Jeff mine ED 2003 salt solution / Adipic acid In a 1 liter Erlenmeyer flask, weigh 425 g of water, 399.63 g (or 0.1772 mol) of Jeffamine ED 2003 and 25.365 g of adipic acid (or 0.1737 mol). The mixture is stirred at room temperature for 24 hours. After the dissolution is complete, two samples of 2 g each are taken from the solution. 48 g of water are added and then the mixture is titrated by potentiometry with a 10% w / w solution of acetic acid. Adipic acid is added in an amount necessary to reach the neutralization point of the solution (here 0.536 g or 3.67 mmol); The solution is immediately left under agitation for 24 hours. Once the dissolution is finished, two samples are taken again. A stoichiometric solution of the following composition by weight is obtained: Jeffamine ED 2003: 46.986% by weight Adipic acid: 3.046% by weight Water: 49.968% by weight 2 . Realization of a Jeffamine ED 2003 / AISNa salt solution In a 1 liter Erlenmeyer flask, weigh 200 g of water, 89.33 g of Jeffamine ED 2003 (or 0.0396 mol) and 10.67 g (or 0.0398 mol) of sodium-sulfo-5-isophthalic acid (AISNa). The mixture is stirred at room temperature for 24 hours. After the dissolution is complete, two samples, 2 g each, are taken from the solution. 48 g of water are added and then the mixture is titrated by potentiometry with a 10% w / w solution of AISNa. The amount of AISNa necessary to neutralize the solution is measured for each sample taken. The solution is perfectly neutralized; the addition of AISNa is not necessary. A stoichiometric solution of the following weight composition is obtained: Jeffamine ED 2003: 44.6665% by weight AISNa: 5.335% by weight Water: 50% by weight 3 . Synthesis of PAS / POA copolymer containing 2% by weight of AISNa -Copolymer 3 .3 In a 500 ml glass reactor, equipped with a metal anchor stirrer, introduce 233 g of the Jeffamine ED 2003 / adipic acid solution previously prepared87.4 g of the previously prepared Jeffamine ED 2003 / AISNa salt solution and 63.65 g of caprolactam (or 0.563 mol) and 0.2374 g of catalyst (50% by weight hypophosphorous acid solution). The reactor is then closed and then 3 vacuum / argon purges are performed to remove the oxygen. The reactor is then immersed in a bath brought to 130 ° C and the temperature is increased according to a defined schedule. The temperature thus reaches 260 ° C in 3 hours during which the water distills. A retention is applied at atmospheric pressure for one hour and then another at reduced pressure for 2 hours. After these retentions, the reaction mass is again put under atmospheric pressure and then cooled. This is immediately extracted from the reactor. The copolymer is analyzed in terms of terminal groups (NH2 and COOH) and molecular mass.

Four . Post-condensation of PAS / POA copolymer containing 2% by weight of AISNa with the succinic anhydride co-Copol number 3. 4 Having measured the amount of NH2 groups, the amount of anhydride to be added is calculated considering that a NH2 functional group reacts with an anhydride cycle. In the glass reactor, 196.4 g of copolymer and 3.34 g of succinic anhydride (or 0.033 mol) are introduced, the reactor is purged three times to remove oxygen. Then, the reaction mass is brought to a vacuum at 200 ° C for 1 hour, and then at 250 ° C for 2 hours. Then, the reaction mass is brought under atmospheric pressure and then cooled. This is immediately extracted from the reactor. The copolymer is analyzed in terms of the terminal groups (NH2 and COOH).

The copolymers of Examples 1 to 3 are tested for their hydrophilicity properties, stain resistance agent and agent which makes it easier to remove stains.

HYDROFILIZATION Preparation of the sample to be tested A film of Polyamide PA 6. 6, which has an area of 70 cm2, is introduced into an ethanol bath and cleaned at room temperature under ultrasound for 30 minutes, then rinsed with demineralised water and heated for 2 hours in boiling demineralized water, in order to eliminate possible traces of film oligomers. The thus conditioned film obtained is submerged at room temperature in a volume of 200 ml of an aqueous solution containing 2.5 g / liter of copolymer to be tested, for 2 hours under stirring, then rinsed twice for 10 minutes with demineralized water under agitation, and allowed to air dry at a relative humidity of 80% for 7 days. This protocol allows obtaining a reproducible film surface and adsorption. Only the possible copolymer chains in direct interaction with the PA film are left on the surface. A control surface is made following the same protocol but submerging the PA film in a solution of demineralized water that does not contain polymer. In the following, "control surface" will be understood as the PA film released from its oligomers, then submerged in demineralized water and left to dry.

Moisture measurement method The tested PA film has been treated with the aid of copolymer 3.4 of Example 3. The surface properties of the treated film are determined by moisture measurement in double liquid geometry. The treated film is immersed in a glass cuvette (2 cm x 5 cm x 3 cm) filled with synthesis oil (Carrefour oil 20 W 50, viscosity? = 320 mPa. S and surface tension? = 32.2 mN / m) . A drop of demineralized water (volume 1 μl) is deposited on the support surface. The angle of balance? which characterizes the humidity is governed by the energy of the surface of the substrate and the surface tensions of the liquids in presence; This is measured after 20 minutes. The larger the hydrophilization contributed by the copolymer, the weaker it is? The results obtained are the following: RESISTANCE TO STAINS ("STAIN RESISTANCE") Preparation of the sample to be tested A film of Polyamide PA 6. 6 which has a surface of 50 cm2 is introduced in an ethanol bath and cleaned at room temperature under ultrasound for 30 minutes, then rinsed with demineralised water and heated for 2 hours in boiling demineralized water, this in order to eliminate possible traces of film oligomers. The conditioned film obtained in this way is submerged at room temperature in a volume of 250 ml of an aqueous solution containing 2.5 g / liter of copolymer to be tested, for 2 hours under stirring, then rinsed twice for 10 minutes with demineralized water under agitation, and allowed to air dry at a relative humidity of 80% for 7 days. This protocol allows obtaining a reproducible film surface and adsorption. Only the possible copolymer chains in direct interaction with the PA film are left on the surface. A control surface is made following the same protocol, but immersing the PA film in a solution of demineralized water that does not contain polymer. It will be understood then in the subsequent "control surface", the film of PA removed from its oligomers, then submerged in demineralized water and left to dry.

Color test for coffee (resistance to stains - "stain resistance" -) The PA film (50 cm2) tested has been treated as described above in a volume of 250 ml of solution at 2.5 g / liter of the copolymers 1.3, 1.4, 2.3, 2.4, 3.3 and 3.4 of Examples 1 to 3. The treated PA film is immersed for 30 minutes in a coffee (50 ml of 2% aqueous solution of Nestlé Nescafé Expresso) at room temperature, then dried. Its coloration DE is immediately measured by a chromometer (Minolta CR-300 Minolta) according to the 3 axes L, a, b, in relation to a "white" PA film (control surface that has not been submerged in coffee): DE sample = yf DL2 + Da2 + Db2 With DL = L sample_LJwhite a = furnished - SDlank Db = Omphas "^ white The color of the sample is immediately normalized with respect to a control film (control surface) that has suffered the same immersion in coffee; the normalized coloration is equal to the ratio R = DEsample / DEtestigo • When this ratio R is less than 1, this means that the treated sample is colored less than the witness. The results obtained are the following: ELIMINATION OF DIRT ("SOIL REL ASE") - Pretreatment of carpets - Aqueous treatment copolymer solutions are applied on pieces of Sommer plush beige carpet (reference New Neptune coloris J480, with 100% polyamide velvet, 1840 g / m2) by spraying, in order to obtain a deposit of copolymer (expressed as dry) of 0.05, 0.1 or 0.5 parts by weight for 100 parts by weight of velvet. 100 ml of copolymer solution for 100 g of velvet are sprayed, the surface mass of the "useful" carpet (velvet) is evaluated at 600 g / m2. A piece of untreated carpet will be the witness.

- Stain-stain test - The method consists of making various stains on the carpet pieces treated with the help of a 3.4 copolymer solution and staining them with the cleaning product according to the instructions given by the supplier.

The pieces of carpet are stained with the following 4 staining products: Stained carpet pieces are left for 24 hours and then stained according to the following protocol. Cleaning product that has been used for stain removal: K2r (from K2r Produkte AG) special pump cleaner Stain removal method: 1) Absorption of excess liquid with the aid of an absorbent non-woven material or removal by scraping or scraping with spatula of viscous or solid products that are pulverized or crushed. 2) Use of the stain remover according to the manufacturer's instructions: foam spray penetration of the foam with the help of a brush or an absorbent non-woven material and then combed the velvet this until the total elimination of the stain or impression that already there is nothing more to eliminate (no trace on the non-woven material). 3) Maximum drying with absorbent non-woven material 4) Hairstyle of the velvet 5) Aspiration 6) Evaluation The evaluation of the spots is evaluated by 5 people according to the following scale: 0: no elimination 1: weak elimination 2: important elimination 3: almost complete elimination 4: total elimination You can put intermediate points. The result provided is the average of these 5 ratings. A standard deviation of 0.5 is considered significant. The results obtained are the following: It is found that the pretreatment with the low concentration copolymer provides a better elimination (removal of dirt) of the greasy and coffee stains.

- Test of enmugrecimiento- cleaning - The following operations are successively carried out: treatment of the carpet pieces as indicated above, soiling, suction, cleaning, with the photometric measurements and calculation of the removal of the dirt.

Preparation of the samples Three samples of pre-treated carpet pieces (180 mm x 200 mm) are cut with the aid of a solution of the copolymer 3.4 of Example 3.

Fouling of the "barrel" samples. Foam cubes are soiled on a rotating stone agitator with a perchlorethylene standardized powder suspension. The samples are stained by fixing them on the internal wall of a cylindrical barrel that is put in rotation and in which the stained and dry foam cubes, porcelain spheres and a tetrapod have been placed. These stained samples are photomedidas.

Aspiration The suction of the stained samples is carried out with the help of a vacuum cleaner provided for this purpose.

Injection -Extraction The injection-extraction of the pre-treated samples is done by fixing them in three alveoli of a plate provided for this purpose, and using an injection-extraction machine with a solution of the cleaning product. Product used: Wetrok Retex (weak detergent from Wetrok) The samples are then dried outdoors and then aspirated and photomedidas.

Calculations The photometric measurements of the reflectance values are carried out with a Datacolor Elrepho 2000 spectrophotometer, under a wavelength of 680 mm, without UV, point regulated on 27. We proceed on each sample to four measurements, from which the half. The following values are obtained: "New samples (not pretreated): YO "Pretreated and stained samples: Yl "Pre-treated, stained and cleaned samples Y3 The percentage of removal of dirt or dirt is then equal to Y3-Y1 R 'x 100 The results obtained are the following: It is noted that the pretreatment of the polyamide carpets allows a better elimination of the dirt (release of dirt) in the cleaning with a detergent, and that a small amount (0.1%) of copolymer is sufficient.

DETERGENCE - Polyamide fiber carpet material, white-colored stain source * used motor oil * lipstick (red Revlon) * sauce for spaghetti "Old World" * black wax "Kiwi" for shoes * tea * coffee analytical balance micropipette sponge application white paper napkin stopwatch vacuum cleaner "Dirt Devil" steam cleaner "Bezel" concentrate for steam cleaning "Rug Doctor" - Preparation of carpets 1) The carpet is first cleaned on one side and on the other, front and back, with the help of the detergent Rug Color diluted according to the indications of the brand (15 g / liter or approximately 2 ounces per gallon), using a Steam cleaning device with steam. 2) After drying, the carpet is trimmed into 10x10 cm squares (approximately 4x4 inches) that are marked below to ensure that all hairs are oriented in the same direction from one frame to the other to obtain similar looking features ( lower reflection). 3) The carpet samples are then marked to indicate the tests and the products.

Spot-cleaning test - Two tests are performed for each spot. The reflectance before staining, Rdl, of the carpet samples, is measured. 2) Oil stains are made using the micropipette; the waxy spots are firstly weighed on the application sponge and then applied on the carpet samples. The oil stains are applied at a dose of 0.12 + _0.05 g for each sample of carpet inside a square mask of approximately 5x5 cm (2x2 inches) with the help of a spatula. The waxes are applied at a weight dose of 0.15 + _ 0.05 g- 3) The spots are allowed to dry overnight before cleaning. The reflectance of the samples of the stained carpets, Rd2, is measured before cleaning. 4) Following the recommendations given on the label that carries the carpet, the samples are dried four times (each time for 5 seconds), using the white absorbent paper napkins. 5) The samples are then treated by vaporization at a distance of 10 to 15 cm (approximately 4-6 inches), of 4.0 + _ 0.1 g of aqueous liquid cleaning product following: sodium laurisulfate 2% sodium polyacrylate 1% propylene glycol 3% • perfume 0.05% water as long as it is sufficient for 100% pH 9, added of 0.25% to 15 of its weight, of sulfonated copolymer prepared above. 6) The product is allowed to rest to allow the formed esume to penetrate the spots. 7) Using a dry white absorbent paper napkin, the stains are cleaned by rubbing the upper part of the stain five times through the center; the paper napkin is turned to obtain a suitable surface and it is still rubbed five more times from the lower part of the stain through the center. 8) Repeat steps 5) to 7) four additional times for each sample, for a total of 5 cleaning cycles. 9) Dry the carpets and then vacuum. The reflectance Rd3 of the samples of the cleaned carpets is then measured. The removal of the stains (removal of dirt) R "is calculated as follows: Rd2 - Rd3 R "= x 100 Rd2 - Rdl The results obtained (values of R" in%) are the following: (photometric measurements of the reflectance values made with a Datacolor Elrepho 2000 spectrophotometer, under a wavelength of 680 mm , without UV, regulated point on 27)

Claims (27)

1. Water-soluble or water-dispersible copolymer (C) comprising: at least one polyoxyalkylene unit (POA) and at least one sulfonated polyamide unit (PAS), the copolymer (C) is characterized in that the polyoxyalkylene unit (POA) comprises from 2 to 200 , preferably from 5 to 150 similar or different oxyalkylene portions, wherein the linear or branched alkylene residue contains from 2 to 12, preferably from 2 to 6 carbon atoms, more particularly 2 or 3 carbon atoms, the sulphonated polyamide unit ( PAS) comprises (i) polyfunctional non-sulfonated portions (mNS) similar or different from the formula (mNS1) and / or (mNS2) -C (O) -AC (O) -N (R) -D- (R) - (mNS1) (dicarbonyl / diimino) and / or -C (O) -KN (R) - (mNS2) ("lactam") and / or -C (O) -KN (R) -C (O) -AC (O) - (mNS3) ("lactam" / dicarbonyl) and / or -N (R) -DN (R) -C (0) -KN (R) - (mNS4) (diimino / "lactam") formulas in which: A represents a group aliphatic, cycloaliphatic or aromatic hydrocarbon, D represents an aliphatic, cycloaliphatic or aromatic hydrocarbon group optionally interrupted with one or more oxygen or tertiary nitrogen heteroatoms, K represents an aliphatic, cycloaliphatic or aromatic group, the symbols R are identical or different and represent a hydrogen atom or an alkyl group of 1 to 4 carbon atoms; (ii) the sulfonated polyfunctional portions (mS) similar or different from the formula -VQ (L-S03M) nW- where the symbols V and W, identical or different, represent a carbonyl group -C (0) -, oxy -O-, imino -NH- or (R) imino -N (R) - wherein R represents an alkyl group of 1 to 4 carbon atoms; the symbol Q represents an aromatic, aliphatic or cycloaliphatic hydrocarbon group; L is a valence bond or an alkylene, alkoxyalkylene, oxyalkylene, arylene, alkylarylene, alkoxyarylene group; M represents a hydrogen atom or an alkaline cation; n is greater than or equal to 1; (iii) and the linking groups (glPAS) of the portions of said sulfonated polyamide unit (PAS) -C (0) -0- and / or -OC (O) - and / or -C (0) -N (R ) - and / or -N (R) -C (0) -where R, similar or different, represents a hydrogen atom or an alkyl group of 1 to 4 carbon atoms; the proportion of functional groups S03M, expressed as mass of functional group S03-, in the unit or units (PAS) is such that it represents at least 0.1%, preferably at least 0.2%, more particularly at least 0.4%, mainly of 0.4 to 15% of the total mass of the copolymer (C); the mass ratio of the unit set (POA) / mass of the unit set (PAS) is 95/5 to 30/70, preferably 90/10 to 40/60, more particularly 85/15 to 50 / fifty; the number of amino functional groups -NH2 present in the copolymer (C) is at most 80 milliequivalents per kilogram of copolymer (C) the number of carboxyl functional groups -COOH present in the copolymer (C) is at least 80 milliequivalents , preferably of at least 100 milliequivalents per kilogram of copolymer (C).

2. Copolymer (C) according to claim 1, characterized in that it has a molecular mass in number, less than or equal to 100,000, preferably less than or equal to 70,000, more particularly from 5,000 to 60,000.

3. Copolymer (C) according to claim 1 or 2, characterized in that it is linearly sequenced.

4. Copolymer (C) according to claim 3, characterized in that the ratio of the number of portions (POA) / number of portions (PAS) is 1/2 to 2/1.

5. Copolymer (C) according to any of claims 1 to 4, characterized in that it also comprises in its polyamide unit (s) (PAS) the different polyfunctional portions, particularly: the non-sulfonated dicarbonyl portions (mD) of the formula -C (O) -AC (0) -, where A represents • an aliphatic, cycloaliphatic or aromatic hydrocarbon group, similar or not to the dicarbonyl subportion of the portion (mNS1) or (mNS3), not bound to a diimino- (R ) -D- (R) - or a "lactam" sub-C (O) -KN (R) - and / or the non-sulfonated polyfunctional portions (mP) of the formula (i) -XEY- where the symbols X and And, identical or different, they represent a group oxy -O-; imino -NH- or (R) imino -N (R) - where R represents an alkyl group of 1 to 4 carbon atoms the symbol E represents an aliphatic, cycloaliphatic or aromatic hydrocarbon group, polyvalent, optionally interrupted with one or more heteroatoms of oxygen or tertiary nitrogen, the polyvalent group is linked to at least one group X and at least one group Y, or (ii) -C (0) -E'-C (O) - where the symbol E 'represents an aliphatic, cycloaliphatic or aromatic hydrocarbon group substituted with at least one hydroxyl or carboxyl functional group

6. Copolymer (C) according to any of claims 1 to 5, characterized in that the unit (PAS) comprises the portions corresponding to the aliphatic polyamides PA 4, PA 6, PA 10, PA 11, PA 12, PA 6.6, PA 4.6 , PA 10.6 and further containing the sulfonated portions, preferably sulfonated, sulfosuccinoyl or sulfoisophthaloyl dicarbonyls more particularly, all or part of the nonsulfonated aliphatic dicarbonyl portions, may be replaced by aromatic dicarbonyl moieties.

7. Copolymer (C) according to any of claims 1 to 6, characterized in that each polyoxyalkylene unit (POA) is linked to a sulfonated polyamide unit (PAS) by intermediation of the similar or different linking groups comprising at least one heteroatom N , O, S, preferably by intermediation of the amides, esters, carbamates, oxy, ureylene or thio groups.

8. Process for preparing the copolymer (C) forming the objective of any of claims 1 to 7, by polycondensation of the monomers (M) from which the unit (PAS) derives, in the presence of a prepolymer (PP) containing the unit polyoxyalkylene (POA) and including functional portions or groups capable of condensing or reacting with at least one of said monomers, and optionally the post-reaction with a consumer agent of the amino-NH2 functional groups.

9. Process according to claim 8, characterized in that the monomers (M) are chosen from those where the aliphatic polyamides of the PA 4, PA 6, PA 10, PA 11, PA 12, PA 12, PA 6,6, PA 4.6, PA 10.6 and which also include sulfonated monomers, preferably sulfonated dicarboxylic acids, more particularly sulfosuccinic or sulphoisophthalic acids, all or part of the non-sulfonated aliphatic dicarboxylic acids can be replaced by aromatic dicarboxylic acids.

10. Process according to claim 8 or 9, characterized in that the prepolymer (PP) having a polyoxyalkylene chain (POA) including the portions capable of condensing or reacting with at least one of said monomers where the sulfonated polyamide is derived, it has at least one alcohol, amine, acid, epoxy or urethane termination.

11. Process according to any of claims 8 to 10, characterized in that the polycondensation operation of the monomers (M) where the unit (PAS) is derived in the presence of said prepolymer (PP) containing the polyoxyalkylene unit (POA) can be carried out : by contacting the prepolymer (PP) and the different monomers (M) in the form of powder, in the liquid form or in aqueous solution; the relative amounts of the different monomers (M) are such that the molar ratio of the number of their carboxylic functional groups / number of their functional groups amines is at least 1, preferably at least 1.05, more particularly at least 1.1; the amount of sulphonated monomer, expressed in mass of SO 3, is such that it represents at least 0.1%, preferably at least 0.2%, more particularly at least 0.4%, mainly from 0.4 to 15% of the total monomer mass (M ) and the prepolymer (PP) put into operation; the relative amounts of the prepolymer (PP) and the monomers (M) are such that the mass ratio of the prepolymer (PP) / mass of the monomer set (M) is 95/5 to 30/70, preferably 90 / 10 to 40/60, more particularly from 85/15 to 50/50; then the polycondensation itself under an inert atmosphere, at a temperature of the order of 190 to 280 ° C, preferably of the order of 220 to 270 ° C, with distillation of the water formed; and optionally postcondensation or post-reaction of the copolymer formed with a compound consuming amino functional groups -NH2, in such amount that the amount of functional groups -NH2 optionally present in the final copolymer does not represent more than 80 milliequivalents per kilogram of copolymer final.

12. Process according to claim 11, characterized in that the compound capable of consuming the amino -NH2 functional groups is a: carboxylic acid, preferably succinic acid, isophthalic acid-sodium sulfonate, carboxylic anhydride, preferably succinic anhydride, anhydride phthalic, maleic anhydride; mono- or poly-functional epoxide, preferably an epoxyalkane containing from 4 to 18 carbon atoms; monoisocyanate, preferably dodecane isocyanate; acrylate or quaternary methacrylate.

13. Process according to claim 12, characterized in that the compound capable of consuming the amino-NH2 functional groups is put into operation according to an amount such that the amount of functional groups -NH2 optionally present in the final copolymer does not represent more than 80 milliequivalents per kilogram of final copolymer.

14. Detergent agent of hard or textile surfaces, mainly of synthetic polymer, more particularly of the textile surfaces of polyamide, and / or the agent capable of contributing to said surfaces the properties of resistance to stains and / or that facilitate the elimination of the stains and dirt of said surfaces, characterized in that the agent comprises at least one water-soluble or water-dispersible copolymer (C) which forms the objective of any of the claims 1 to 7, or capable of being obtained according to claims 8 to 13.

15. The use of the water-soluble or water-dispersible copolymer (C) which forms the objective of any of claims 1 to 7, or which can be obtained according to any of claims 8 to 13, as detergent for hard or textile surfaces, mainly of synthetic polymer, more particularly the polyamide textile surfaces and / or as an agent capable of providing said surfaces with the properties of resistance to stains and / or which facilitates the elimination of stains and / or dirt from said surfaces.

16. Process for cleaning hard or textile surfaces, mainly of synthetic polymer, more particularly textile surfaces of polyamide, and / or for providing said surfaces with the properties of resistance to stains and / or to facilitate the elimination of stains and of the dirt from said surface, by non-permanent treatment of the surfaces with the aid of the water-soluble or water-dispersible copolymer (C), which forms the objective according to any of claims 1 to 7, or which can be obtained according to any of the claims 8 to 13, the copolymer (C) is present in aqueous solution or dispersion.

17. The use or method according to claim 15 or 16, characterized in that the surface considered is a shower wall.

18. The use or method according to claim 15 or 16, characterized in that the surface considered is of canvas, clothing or underwear, preferably of polyamide.

19. The use or method according to claim 15 or 16, characterized in that the surface considered is a carpet or carpet, preferably of polyamide.

20. The use according to claim 17 or 18, characterized in that the copolymer (C) is put into operation at a ratio of 0.01 to 5, preferably 0.05 to 3 g / m2 of surface.

21. Detergent compositions for cleaning hard surfaces or textiles, mainly of synthetic polymer, more particularly textile surfaces of polyamide and / or to provide said surfaces with properties of resistance to stains and / or facilitate the elimination of stains and dirt of said surfaces, characterized in that they comprise at least one water-soluble or water-dispersible copolymer (C) which forms the subject of any of claims 1 to 7, or which can be obtained according to any of claims 8 to 13.

22. Detergent compositions according to claim 21, characterized in that they comprise from 0.05 to 10, preferably from 0.1 to 2% by weight of copolymer (C).

23. Detergent compositions according to claim 21 or 22, characterized in that they are intended for rinsing the shower walls and comprise water, a chelating agent and at least one surfactant.

24. Method of cleaning the shower walls by humidifying the surface of the walls with water and spraying on said wet walls of the composition forming the object of claim 23.

25. Method according to claim 24, characterized in that the wall is made of porcelain, ceramic tiles, plexiglas or glass fibers.

26. Detergent compositions according to claim 21 or 22, characterized in that they are intended for washing and / or rinsing and / or softening linen, clothing or underwear, preferably polyamide.

27. Detergent compositions according to claim 21 or 22, characterized in that they are intended for the cleaning of rugs and carpets, preferably polyamide.