MXPA02000631A - Increasing the wet slippage properties of textile material, and wet-acting lubricants for this purpose. - Google Patents

Abstract

Use of (PS) water-dispersible or -colloidally soluble, end-capped polyesters optionally in the form of an aqueous composition (W), as wet-acting lubricants in the treatment of textile piece goods with a textile treatment agent (T) from aqueous liquor under conditions which would otherwise in the textile substrate favour the formation of transport folds and/or the occurrence of friction in or on the substrate, particularly as wet-acting lubricants in the dyeing of polyester in the jet, the corresponding wet-acting lubricants, and their production and preparations thereof.

Description

INCREASE OF SLUDGE PROPERTIES IN WET OF TEXTILE MATERIAL, AND LUBRICANTS OF ACTION IN WET FOR THIS PURPOSE FIELD AND BACKGROUND OF THE INVENTION In the treatment of textile material in the form of piece fabric fabrics, particularly in the form of rope or tubular form, essentially during pretreatment, dyeing, optical brightening or after-treatment, in aqueous liquor, under conditions in which folds may form by transport on the textile substrate or where abrasion of the substrate may occur on an adjacent substrate or on the parts of the apparatus, in particular on jet-dyeing machines and in tubs with aspads, undesirable phenomena are the marking of the transport folds and the formation and marking of friction points, which then, as non-uniform characteristics, damage the appearance of the fabric and possibly also the physical properties of the treated articles and consequently of the finished articles. In order to counteract these interfering phenomena, wet-action lubricants (ie wet-action slip agents) are used in the corresponding process steps, which reduce the tendency REF .: 134837 ljá k * ¡? .dü? * i ** i * k. towards the formation or stabilization and consequently the marking of folds, in particular folds by transport, and reduce the friction substrate / substrate and substrate / metal and consequently the tendency to the formation and marking of friction points. It has already been proposed to employ dispersions of waxes of different types as lubricants (or slip agents) to prevent the formation of creases or wrinkles by transport, for example, as described in GB-A-218202 or 2282153. In EP- A-506613 are described for a similar purpose, compositions containing polymers of the radical polymerization, of ethylenically unsaturated monomers (especially acrylic polymers) in mixture with polyol esters with a fatty acid of 8 to 26 carbon atoms. WO-A-85/03959 discloses certain water-free compositions containing higher alkyl esters of benzene monocarboxylic acids up to hexahydric acids [which are referred to herein as "polyesters", in the examples trioctyl trimellitate, triisooctyl trimellitate and tri- (2-ethylhexyl)] and some additional components are illustrated (monoesters, diesters, ethoxylated alcohols and esters of ethoxylated alcohols), which can also be diluted with water and used as dyeing aids. In US-A-5820982 the production of certain polyester resins from recycled polyterephthalate is described (in the examples polyethylene terephthalate) and a sulfoarildicarboxylate (in the examples sulfoisophthalate) with glycol and oxyalkylated polyol, which can be terminated with a polyacid (in the examples trimellitic acid or hypophosphoric acid), to give a polyester resin useful for various purposes, in particular as a glue for fibers and as a color equalizing agent, in the only example of application (Example 8) the use as a color equalizing agent in the dyeing of a bundle of yarns is illustrated. In the constant improvement of processes and machines in order to increase production and obtain an environmentally acceptable procedure, machines and processes are being developed that are designed to work at high speed or with higher production and / or operate at lower proportions. of liquor. Therefore, greater demands are being made on the lubricants used. In this way, for example, these must be resistant to particularly high shear forces, while also developing their action, as much as possible, for scarce liquors. The more scarce the liquor, the greater the efficiency required of the respective treatment agents since the wet sliding of the articles and the achievement of a uniform and smooth appearance in the articles, without damaging the items, it becomes more difficult the greater the proportion of liquor captured by the items. It has now been found that certain end-terminated polyesters, having a certain hydrophilicity, that is sufficient for the polyester to be dispersible or colloidally soluble in water, in particular self-dispersible or colloidally soluble, particularly also end-terminated polyesters, also used as agents for removing dirt, surprisingly have an advantageous action as wet-acting lubricants (i.e. as wet-acting slip agents) in the treatment of piece, rope or tubular textile fabrics, particularly manufactured to from polyester fibers, in jet dyeing machines, where, for example, they do not hinder or deteriorate the dyeing, but act surprisingly well and extremely superficially on the wet substrate as wet-acting lubricants, with an efficiency and surprisingly high performance, and also with a high degree of constancy and reproducibility of these properties, even if the products used come from different lots and / or have been stored for a long time. The invention relates to the use of those polyesters (Ps) as defined below, as wet-acting lubricants for the treatment of i nt? - i .it-i * textile material in the form of textile fabrics in the piece, particularly in the form of rope or tubular form, to the corresponding wet-action lubricants, and to their production and aqueous compositions (W) thereof . A first subject of the invention is thus the use of end-terminated, water-dispersible or colloidally-soluble end-capped (Ps) polyesters, as wet-action lubricants, in the treatment of textile fabrics in the piece, with a textile treatment agent ( T) by means of an aqueous liquor depletion process, under conditions that would otherwise favor, in the textile substrate, the formation of transport folds and / or the presence of friction on the substrate or on it, or respectively it is a process for the treatment of textile fabrics in piece, with a textile treatment agent (T) through methods of exhaustion of an aqueous liquor, under conditions that would otherwise favor, in the textile substrate, the formation of folds by transport and / or the presence of friction in the substrate thereon, the process is characterized in that it is carried out in the presence of polyester (Ps) terminated at the ends, dispersible in water or colloidally soluble, as a wet-action lubricant. Polyesters finished at the ends íii *? l¿.- ?. -? ,? *. * I. t.

(Ps) are in particular end-terminated polyesters, which are polymers obtainable by the polymerization / polyesterification reaction of corresponding esterifiable monomers (in particular hydroxy-substituted monomers and / or carboxy-substituted monomers or an appropriate functional derivative of carboxy). ) and by the termination esterification reaction at the ends. As end-capped polyesters (Ps), it is possible to employ known polyesters or polyesters which can be produced analogously to known polyesters. For the production of the end-terminated polyesters (Ps) it is advantageous to use starting materials, in particular monomers suitable for the formation of polyester chains by polycondensation and / or in the case of lactones, also the polymerization reaction with polyaddition , which are suitable for the formation of linear polyester chains, in particular difunctional compounds (D) which are suitable monomers for polyesterification (ie polymerization by esterification), and monofunctional compounds (E) which are suitable for the termination in the ends of the polyesters, and optionally higher oligofunctional compounds (H) which are suitable for branching the polyesters. The polyesters (Ps) to be used according to the invention are dispersible (preferably self-dispersible) or colloidally soluble in water and contain in the respective molecule at least one hydrophilic constituent and at least one hydrophobic constituent, such that the polyester formed has a corresponding hydrophilicity, in order to be dispersible or colloidally soluble, in particular self-dispersible or as much soluble colloidally, in water. The monofunctional, bifunctional, difunctional and higher oligofunctional compounds are essentially carboxylic acids or appropriate functional derivatives thereof, mainly esters of low molecular weight alcohols which can be cleaved by transesterification, particularly esters of alcohols of 1 to 4 carbon atoms, by examples are ethyl esters or preferably methyl ethers, or anhydrides, on the one hand, and hydroxyl compounds, in particular alcohols, on the other hand, which, through esterification or transesterification, result in corresponding carboxylic acid ester groups, or else lactones or hydroxycarboxylic acids, and may optionally contain one or more heteroatom binding members, for example, -O-, -CO-, -CO-O-, -NH-CO-O-, -CO-N-, -CO -NH-, -NH-CO-NH- or -S02-.

Suitable as difunctional monomers (D) are, in particular, (A) aliphatic or araliphatic diols, in particular (Ai) aliphatic and araliphatic diols which otherwise contain no hydrophilic constituents or substituents, in particular alkanediols having to 10 carbon atoms, wherein the alkane radical can be linear or, if it contains from 3 to 10 carbon atoms, alternatively branched, or, if it contains from 4 to 10 carbon atoms, alternatively di (hydroxyalkyl of 1 to 2 atoms) carbon) benzenes, alternatively cyclic, water-insoluble polyether diols, polyester diols, polycarbonate diols, polyurethane diols and polyester-urethane diols, and (A2) aliphatic or araliphatic diols containing at least one hydrophilic constituent and / or less a hydrophilic substituent, in particular water-soluble polyalkylene glycols (in particular polyethylene glycols, oligopropylene glycols and copolyethylene-propylene glycols) choles) and polyether-urethane diols, diols containing a sulfo group, aliphatic or araliphatic, containing one or more, for example one or two, sulfo groups, and diols containing a carboxyl group, aliphatic or araliphatic, containing one or more , for example one or two carboxyl groups, in the alkali metal salt form; al-fe aí ^ A -.-.- ^ -i.

(B) aliphatic, aromatic or araliphatic dicarboxylic acids, in particular (Bi) alkane dicarboxylic acids having from 2 to 10 carbon atoms in the alkane radical, wherein, if the alkane radical contains from 4 to 10 carbon atoms, it can optionally interrupted by oxygen, aromatic dicarboxylic acids having from 1 to 3 benzene rings, two of which may be optionally fused, or araliphatic dicarboxylic acids containing from 9 to 18 carbon atoms and containing one benzene ring or two benzene rings or optionally fused, wherein the aromatic rings may be attached to additional aliphatic, aromatic or araliphatic portions of the molecule, optionally through oxygen, or they may be attached to an additional aromatic part of the molecule, optionally through a sulfone group, functional derivatives thereof (for example alkyl esters of 1 to 4 carbon atoms of di acids) carboxylic acids or optionally their anhydrides), and (B2) aliphatic, aromatic or araliphatic dicarboxylic acids containing at least 4 carbon atoms and in which the hydrocarbon radical to which at least one of the two carboxyl groups is linked contains 1 at 14 carbon atoms and containing at least one hydrophilic radical (for example an ether chain of l.j.J.J i-Ai t t-A- i .i. hydrophilic polyethylene glycol) and / or at least one hydrophilic substituent (for example one or more, in particular 1 or 2, sulfo groups) in the molecule, or functional derivatives thereof (alkyl esters of 1 to 4 carbon atoms of the dicarboxylic acids or optionally their anhydrides); (C) aliphatic hydroxymonocarboxylic acids, in particular (Ci) unsubstituted, aliphatic hydroxycarboxylic acids, having from 3 to 18 carbon atoms, optionally in the lactone form, or prepolymers (polyesters) thereof, for example in a diol of departure such as for example those mentioned above as (Ai). The monomers (D) containing a sulfo group are difunctional as long as the sulfo groups substantially do not undergo esterification under the reaction conditions required for the esterification of the carboxy groups or respectively for the transesterification of their lower alkyl esters. As (Ai), mention may be made, for example, of ethylene glycol, 1,3-propanediol, 2,4-dimethyl-2-ethylhexane-1,3-diol, 2,2-dimethyl-1,3-propanediol, -ethyl-2-butyl-1,3-propanediol, 2-ethyl-2-isobutyl-1, 3-propanediol, 1,3-butanediol, 1-butanediol, 1,5-pentanediol, 1,6-hexanediol, 2,2,4-trimethyl-1,6-hexanediol, 1,2-cyclohexanedimethanol, 1,3-cyclohexanedimethanol or 1-cyclohexanedimethanol; Í - s. yes Teafetá l 2,2,4, 4-tetramethyl-1,3-cyclobutanediol, para-xylylenediol, 1,2-propylene glycol, neopentyl glycol, polytetrahydrofurans, higher propylene glycols (having more than 10 monomer units), polycaprolactones from the addition of an e-caprolactone on an alkanediol (for example on one of the aforementioned alkanediols), or polycarbonate diols from the alkanediols mentioned above. Of the diols (Ai), preference is given to alkanediols of 2 to 4 carbon atoms, in particular propylene glycol, ethylene glycol and combinations of propylene glycol and ethylene glycol. As (A2), mention may be made, for example, of the following: (A2?) Polyethylene glycols (for example having an average molecular weight Mw in the range of 200 to 10,000, preferably 500 to 5000), oligopropylene glycols soluble in water (having 10 monomer units or less), (A22) alkanediols having 4 to 10 carbon atoms and carrying one or two sulfo groups as substituents, and optionally oxyethylated and / or oxypropylated, benzenedimethanols bearing a sulfo group as a substituent on the benzene ring, for example 2-sulfobutanediol and addition products thereof with ethylene oxide and optionally propylene oxide, sulfo-1,2-benzenedimethanol (sulfoxylene glycol) and sulfo-1,4-benzenedimethanol, or additionally sulphonated diepoxides of alkanediols or polyethylene glycols (for example of the reaction of the respective alkanediols or polyethylene glycols with epichlorohydrin and sulfonation with a bisulfite, with sodium bisulfite) and oxyalkylated, sulfonated alkenediols (for example from the sulfonation of the product of the addition reaction of oxiranes, mainly ethylene oxide and / or propylene oxide, to alkanediols with sulfite, for example with sodium sulfite), or else (A23) products of the monoamidation of dicarboxylic acids or higher carboxylic acids [eg those of the following type (Bi) or (H2)] with dialkanolamines of low molecular weight, for example with diethanolamine, dipropanole ina or diisopropanolamine, wherein the non-amidated carboxyl groups they are in the alkali metal salt form (particularly as Na, Li or K salt). Of the diols (A2), those of the type (A2?), Especially polyethylene glycols, are preferred.

As (Bi), mention may be made, for example, of the following: adipic acid, succinic acid, glutaric acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, maleic acid, fumaric acid, dimethylmalonic acid, diglycolic acid, acid 3,3'-oxydipropionic, trimethyladipic acid, itaconic acid, orthophthalic acid, phthalic acid, terephthalic acid, oxydibenzoic acid, naphthalene-2, ß-dicarboxylic acid, naphthalene-1, 8-dicarboxylic acid, naphthalene-1, 4- dicarboxylic, 1,2-di- (p-carboxyphenoxy) -ethane, 1,2-di- (? -carboxyphenyl) -ethane, 2-biphenyl-2'-dicarboxylic acid, 1,4-cyclohexanedicarboxylic acid and, 4 ' -dicarboxydiphenylsulfone and its methyl esters. Of the aliphatic dicarboxylic acids (Bi), preference is given to the α, β-dicarboxylic acids; of the aliphatic, aromatic and araliphatic dicarboxylic acids (Bi), preference is given to the aromatics, particularly terephthalic acid. As (B2) mention may be made, for example, of the following: sulfosuccinic acid, methylsulfosuccinic acid, sulfomethyl sulfinic acid, 4-sulfophthalic acid, 5-sulfoisophthalic acid, dimethylsulfoisophthalic acid, sulfoterephthalic acid, sulfomalonic acid, 5- (p-sulfophenoxy) ) -isophthalate, 1,3-dimethyl, phenyl-3-5-dicarboxy-benzenesulfonic acid, 2-ß-dimethylphenyl-3,5-dicarboxybenzenesulfonic acid, naphthyldicarboxylic acid, benzenesulfonic acid, sulfo-4-naphthalene-2 acid, 7-dicarboxylic acid, sulfobis (hydroxycarbonyl) -4,4'-diphenylsulphone and products of sulphonation of oligoesters .. -as ¡t > »I .. of unsaturated dicarboxylic acids that can be obtained by reacting them, for example, with sodium sulphite, for example based on maleic acid, itaconic acid or citraconic acid, for example with the aforementioned alkanediols and polyoxyalkylene dicarboxylic acids, for example from the carboxymethylation of polyalkylene glycols or from catalytic oxidation or electrochemistry of the terminal CH2-OH groups of the polyalkylene glycols, to COOH groups, wherein the polyalkylene glycols are preferably polyethylene glycols and / or polypropylene glycols, and methyl esters of the dicarboxylic acids. Of the acids containing a sulfo group (B2), 5-sulfoisophthalic acid is especially preferred; of the acids (B2) those which do not contain sulfo groups are preferred, especially those containing a polyethylene glycol ether chain. As (Ci), mention may be made, for example, of the following: glycolic acid, hydroxypropionic acid, 12-hydroxystearic acid, 2-hydroxycaproic acid, 3-hydroxybutyric acid or 4-hydroxybutyric acid, e-caprolactone,? -butyrolactone and , 3-dimethyl-4-butyrolactone and prepolymers thereof. Suitable monofunctional compounds (E) for terminating at the ends of the polyesters are appropriately hydroxy or carboxy substituted compounds, ? ? • "« •• "^ A ^ u ^« ^ .- ". ~ ~ * «-. . . . "- ,." it *, *** ^ * »**» ***. ». - * ~ J ~~ *. ~ * - ~~ t »* ~ -? U £ ^ * ii capable of undergoing esterification with a carboxy or a hydroxy group of the polyester not yet finished at the ends, where the group carboxy may also be in the form of an appropriate functional derivative, for example an alkyl ester of 1 to 4 carbon atoms, for example carboxylic acid, (Ei) simple carboxylic alcohols or acids or their methyl esters, which do not contribute to the hydrophilicity of the polyester, and (E2) hydroxyl or carboxyl compounds or their methyl esters, which may contribute to the hydrophilicity of polyesters, particularly those containing hydrophilic chains of polyalkylene glycol ether and / or carrying one or two sulfo groups as substituents, and having a boiling point that is conveniently higher than the (trans) esterification temperature. Suitable as (Ei) are, in particular, (en) simple aliphatic or araliphatic alcohols, for example alkanols of 4 to 6 carbon atoms and phenylallanols, and (E? 2) aliphatic, araliphatic or aromatic monocarboxylic acids, simple, Examples are butanoic acid and optionally benzoic acids substituted with alkyl or its methyl ester.

As appropriate (E2) are, in particular, (E2i) hydroxyl compounds, aliphatic or araliphatic, containing a hydrophilic moiety, for example a polyalkylene glycol ether chain and / or carrying one or more sulfo groups as substituents, and (E22) hydrophilic compounds containing a carboxylic, aliphatic, araliphatic or aromatic group, or their methyl esters, containing a hydrophilic moiety, for example a polyalkylene glycol ether chain, and / or carrying one or more sulfo groups as substituents. As (En) mention may be made, for example of the following: cyclohexanol, benzyl alcohol and alcohol (alkyl of 1 to 4 carbon atoms) -benzyl. As (Ei2) mention may be made, for example, of the following: benzoic acid and butyric acid. As (E2?) Mention may be made, for example, of the following: adducts of ethylene oxide and / or propylene oxide, and optionally of butylene oxide or styrene oxide, on an aliphatic monoalcohol having from 1 to 18 atoms of carbon or on an alkylphenol having a total of 10 to 24 carbon atoms, wherein at least 50 mol% of the alkyleneoxy groups present are advantageously ethyleneoxy groups, and the polyalkylene glycol ether chains, incorporated, are preferably those which they consist exclusively of ethyleneoxy units (for example up to an average molecular weight that is in the range of 200 to 20,000, particularly of 200 to 5000), and aliphatic and / or araliphatic hydroxyl compounds, which carry one or two sulfo groups as substituents and optionally containing oxyethylene and / or oxypropylene groups, in the molecule. Of these, the adducts of ethylene oxide are preferred over a low molecular weight alkanol (in particular alkanol of 1 to 4 carbon atoms). The compounds containing a sulfo group, of the type (E2?) Which are particularly worth mentioning are 2-hydroxyethane sulfonic acid, 2-hydroxypropanesulfonic acid, 4- (2-hydroxyethoxy) -benzenesulfonic acid and compounds of the average formula H- (O-alkylene) n-0-CH2- (CHR) m-CH2-R (I! wherein alkylene denotes ethylene and / or 1,2-propylene, R denotes hydrogen or S03H, m denotes 0 or 1, and n denotes a number that is in the range of 1 to 30, wherein at least one of the m + l symbols R denotes S03H. As (E22) mention may be made, for example, of the following: carboxymethylation products of the i * í S. ^ t - * - í J * W - »l ~ ± .MJit. . .. m.-. . »« - • - A - - 'm ~ .. »-.-- n-A? ~ K. - * &*** adducts of ethylene oxide and / or propylene oxide, on an aliphatic monoalcohol having from 1 to 18 carbon atoms, wherein at least 50 mol% of the alkylenoxy groups present are advantageously groups ethyleneoxy and the polyalkylene glycol ether chains, incorporated, preferably consist exclusively of ethyleneoxy units (for example up to an average molecular weight that is in the range of 200 to 5000), or products of catalytic or electrochemical oxidation of the terminal -CH2-OH groups of these addition products to give the terminal -COOH groups, or aliphatic, araliphatic or aromatic carboxylic acids having 7 to 22 carbon atoms, bearing a sulfo group as a substituent, for example orthosulfobenzoic, metasulfobenzoic or parasulfobenzoic acid or sulphonated oleic acid ( for example of the reaction of oleic acid with sodium sulfite). Of those compounds (E22) those which do not contain sulfo groups are preferred. Reagents containing sulfo groups (E2i) and (E22) are presently grouped with monofunctional compounds, provided that the sulfo groups do not substantially undergo esterification under the reaction conditions required for the esterification of the carboxy groups or respectively for transesterification of its lower alkyl esters.

Of the components (Ei) and (E2), the components (E2) are particularly preferred (E2?), Especially the non-ionogenic ones. Suitable as (H) are higher trifunctional and oligofunctional compounds that can lead to branched products with ester formation, in particular (Hi) compounds containing from 3 to 10 alcoholic hydroxyl groups, 10 (H2) compounds containing 3 or more, for example 3 or 4, carboxyl groups, or a functional derivative thereof (for example an alkyl ester of 1 to 4 carbon atoms, of carboxylic acids or optionally their anhydrides), and 15 (H3) hydrocarboxylic acids which contain at least two carboxyl groups and / or at least two hydroxyl groups and functional derivatives thereof (for example alkyl esters of 1 to 4 carbon atoms, carboxylic acids or optionally, if they contain at least two carboxyl groups, their anhydrides) ). Suitable as (Hi) are, for example, trihydroxyalkanes to hexahydroxyalkanes, for example having from 3 to 6 carbon atoms, for example pentaerythritol, trimethylolethane, trimethylolpropane, glycerol 25 mannitol, sorbitol and 1, 2, 3-hexanotriol, and products of tß? á t? Ul? tt il Sk ??. i ^ ÁÁí.?.? - ?? ^. 1: .. *. *. * .. *. J- ^ .. _ .. .. - ~. ~ * ^. S.-I .. -. ¿I ~ ~ ~? * ~ ~ .. J -Í ?. ^ JIM ». X? oxyalkylation thereof, particularly oxyethylation and / or oxypropylation products, for example having from 1 to 20 oxyethylene groups and optionally from 1 to 10 oxypropylene groups. As oligocarboxylic acids (H2), it is possible to use aliphatic, araliphatic or preferably aromatic compounds, for example having from 6 to 15 carbon atoms, preferably benzenetricarboxylic acids (in particular trimellitic acid, hemimellitic acid or trimesic acid) or their esters methyl. Suitable hydroxycarboxylic acids (H3) are aromatic compounds or aliphatic compounds, for example dicarboxylic acids based on aromatic benzene, which carry a hydroxyl group on the benzene ring, for example hydroxy-4-isophthalic or hydroxy-5-isophthalic acid, or saturated, aliphatic dicarboxylic acids, having from 4 to 8 carbon atoms, for example hydroxy-2-methylsuccinic acid, hydroxymethylglutaric acid and hydroxyglutatic acid, or saturated, aliphatic carboxylic acids, having from 3 to 8 carbon atoms, which can carry from 2 to 6 hydroxyl groups, in particular ascorbic acid, gluconic acid and glucoheptonic acid, or methyl esters thereof, or also products of partial amidation of tricarboxylic acids or higher functional carboxylic acids [eg those of the type (H2)] with monoalkanolamines or dialkanolamines, of low molecular weight, for example with monoethanolamine ao diethanolamine, propanolamine or isopropanolamine, or additionally products of the monoamidation of dicarboxylic acids [for example those of the type (Bi)] with dialkalonamines of low molecular weight, for example with diethanolamine, dipropanolamine or diisopropanolamine, wherein the non-amidated carboxyl groups are in the form of the free acid. For the production of the polyesters (Ps) to be used according to the invention, they can be polymerized in particular (A) with (B) and optionally (C), or (C) alone, optionally on an initiator molecule (A) ) or (B) and optionally with (A) or (B) and optionally with (H), where end termination is carried out with (E) It is advantageous to employ difunctional compounds, in particular diols (A) which are reacted with corresponding dicarboxylic acids, in particular of the type (B) or functional derivatives thereof, and optionally with hydroxycarboxylic acids of type (C), or products of the polymerization of hydroxycarboxylic acids (or lactones thereof), in particular of type (C) which are optionally further reacted with (poly) esters of diols, in particular of the type (A) with corresponding dicarboxylic acids, in particular of the j.?, i.:á.¿.?,..t -i ^ ü type (B), or functional derivatives thereof. Monofunctional compounds of type (E) are used in order to crown a terminal group (hydroxyl or carboxyl group). If desired, higher oligofunctional compounds, for example of the (H) type, can be used to produce branched polyesters. The relative amounts or molar ratios of the respective starting compounds are advantageously selected in such a way that the polyesters produced therefrom have the desired hydrophilicity properties, i.e. in particular in such a way that the polyesters also of a hydrophobic portion, they also have a hydrophilic portion, which can be controlled, in particular, through an appropriate choice of the corresponding starting compounds. Thus, for example, the hydrophobic portions are formed by polyesterification with diols of the type (Ai), with dicarboxylic acids of the (Bi) type and / or respectively with hydroxymonocarboxylic acids of the (Ci) type, while the hydrophilic portions are introduce with components of type (A2) or (B2). A contribution to the hydrophilicity of polyesters is also carried out with compounds of the type (E2?) And (E2) • The esterification reaction (or transesterification reaction, if transcarboxylic acid esters of alcohols are transesterified, which can be cleaved under esterification) can be carried out in a manner known per se, wherein the respective selected components (D) and (E) and optionally (H) are reacted with the addition of appropriate catalysts, at elevated temperature, for example found in the range of 150 to 280 ° C, preferably 160 to 260 ° C. If diols (A) are used, it is advantageous to first use the more volatile one and not to add the less volatile one for the additional esterification until the esterification of the preceding one has begun or continued. The esterification (or transesterification) can be carried out initially under atmospheric pressure, for example in the presence of inert solvents or preferably in the absence of any solvent, in which case the volatile by-products, for example the starting materials which have not Reacted and other adjuncts, volatile, can then be removed under reduced pressure. Suitable transesterification and condensation catalysts are, for example, conventional polyvalent metal compounds, for example titanium tetraisopropoxide, manganese (II) acetate, dibutyltin oxide or antimony trioxide / calcium acetate, which can be used in the concentrations that are usual per se, for example in the range of 0.0005 to 1% by weight, particularly from 0.002 to 0.1% by weight, based on (Ps). The starting hydrophilic compounds can, for example, be exclusively those containing, as hydrophilic portions, polyethylene glycol ether chains, which are suitable or preferred for the production of non-ionogenic polyesters, or exclusively those containing sulfo groups as hydrophilic substituents, which are suitable or preferred for the production of anionic polyesters, or also a combination of the two. The respective molar ratios are advantageously selected in such a way that an excess of the hydroxyl compounds relative to the carboxyl compounds, is employed globally, depending on the volatility of the diols employed, and advantageously in such a way that any of the carboxyl groups are crowned with monofunctional alcohols, preferably those of the type (E2?). If higher oligofunctional compounds of the type (H) are used, their molar ratio with respect to the difunctional compounds (D) used is advantageously kept low. Particularly advantageous is to select the respective molar ratios, in such a way that no significant crosslinking is carried out, mainly in such a way that the aqueous dilution of the product does not form agglomerates. you, »,., ,,, ii, J t al.?.l. .. to . . ^. . gelatinous, irreversible, but on the contrary form a dispersion or colloidal solution. For example, if the starting materials are diols (Ai) and (A2) dicarboxylic acids (Bi) (or diesters thereof), a polyol (Hi) and a monofunctional compound (E2?), It is advantageous to employ a molar equivalent or less, preferably 0.5 molar equivalents or less, of (Hi) for example from 0.002 to 0.4 molar equivalents thereof, per mole of the introduced diols [(Ai) + (A2)]. The molar ratio (E2?) / [(A?) + (A2)] is then advantageously in the range of 0.01 to 1, preferably in the range of 0.02 to 0.5, particularly preferably in the range of 0.04. to 0.3. It is understood that a molar equivalent of (H) means one mole of (H) divided by the number of functional groups; in the case of the oligohydroxy compounds (Hi), one molar equivalent of (Hi) is thus one mole of (Hi) divided by the number of its hydroxyl groups. These molar ratios apply to the non-ionic, specific polyesters of the starting components; if other components and / or additional components are used, for the production of the polyesters or oligoesters, the molar ratios should, if necessary, be adjusted or changed accordingly in order to obtain the corresponding properties of the polyester or oligoester. Through the reaction with (H), you can A? l l.. á?????? - - ** ** ** **? MÉ? & - It is possible to produce branched polyesters or oligoesters (Ps) or optionally dometers. The reaction is advantageously controlled in such a way that the average molecular weight Mw of the polyesters produced is = 1000, and is preferably in the range of 1200 to 106, particularly preferably in the range of 1500 to 3 x 105. The synthesis of the polyesters to be used according to the invention is advantageously carried out in such a way that the degree of polymerization can be kept relatively low, in particular in such a way that oligoesters are formed. Any anionic groups, in particular sulfo groups and / or carboxyl groups, present in the polyester (Ps) can be in the free acid form or if desired can be converted to a salt form by reaction with corresponding bases, wherein the cations for formation of salts, known per se, preferably hydrophilizing cations, are taken into consideration, for example alkali metal cations (for example lithium, sodium or potassium) or ammonium cations. { for example unsubstituted ammonium, mono-, di- or tri- (alkyl of 1 to 2 carbon atoms) -ammonium, mono-, di- or tri- (hydroxyalkyl of 2 to 3 carbon atoms) -ammonium, mono-, di- or tri- [(alkoxy of 1 to 2 carbon atoms) (alkyl of 2 to 3 carbon atoms)] - ammonium or morpholinium} , for which, for example, corresponding alkali metal hydroxides or carbonates, ammonia, or the respective amines may be employed, preferably in the form of aqueous solutions. The hydrophilicity of the products is controlled in such a way that the produced polyesters (Ps) can be dispersed until they are colloidally soluble in water (preferably from self-dispersible to colloidally soluble in water), that is to say they provide, in a concentration of 0.1 to 30% by weight, optionally with the aid of appropriate dispersants, in an amount of up to 50% by weight, based on (Ps) and optionally heating up to above the melting point of (Ps), in water, a dispersion or corresponding colloidal solution of 0.1 to 30% (Ps) / o, for the self-dispersible or colloidally soluble, even without the aid of dispersants, in water, through simple agitation and optionally heating above the melting point of (Ps) / an aqueous dispersion of 0.1 to 30% (Ps) or a colloidal aqueous solution of 0.1 to 30% (Ps) - A colloidal dispersion or solution of this type can be cloudy or translucent to transparent, but in the The last case can still be recognized through the Tyndall effect. In polyesters and oligoesters (Ps) produced from terephthalic acid [as (B)], ethylene glycol and / or Í? ní.i ..? . i? propylene glycol (GL) [as (Ai)] and polyethylene glycols [such as (A2)] and optionally (H) or (Hi) and terminated at the ends with an oxyethylated alcohol [such as (E2X)], the hydrophilicity can also be estimated, example, from the weight ratio (GL) / (PEG), where (GL) denotes the proportion by weight of ethylene glycol and / or esterified propylene glycol and (PEG) denotes the proportion by weight of all the esterified polyoxyethylene [a from (A2) and (E2?)]. If the polyoxyethylene chains have an average molecular weight in the range of 500 to 5000, preferably 800 to 3000, this weight ratio (GL) / (PEG) for the corresponding polyesters (P?) Is advantageously found in the interval from 1: 3 to 1:60, preferably from 1: 5 to 1:30. These values apply to the specific non-ionic polyesters of these starting components; if other components and / or additional components are used, for the production of the polyesters, the values must be adjusted or changed accordingly in order to achieve the corresponding hydrophilicity. Of the polyesters (Ps) / preference is given to the polyesters (Ps ') / that is to say those which are self-dispersible or colloidally soluble in water, of these, particularly the polyesters (Ps ") ie the non-ionic ones, especially (Ps') '') those of the esterification or transesterification of (Bi) using (Ai), (A2?) and optionally (Hx) or (H3) and carrying out termination at the ends with (E2?). particular modality of The invention is used, as (Ps) / of polyesters such as those known as soil release agents for textile substrates (for example in detergents). The polyesters (Ps) produced can 10 handled and used directly in the way they have been produced. Advantageously they are used in the form of aqueous, preferably concentrated (W) compositions. These compositions (W) are dispersions or colloidal solutions of (Ps) and advantageously contain the Polyesters (Ps) in a concentration in the range from 1 to 50% by weight, preferably from 2 to 50% by weight, particularly preferably from 3 to 25% by weight. The aqueous compositions () can be simple aqueous dispersions or colloidal solutions of (Ps) alone or Preferably they contain additional additives, in particular (G) a thickening agent. Suitable thickening agents (G) are preferably non-ionogenic and / or anionic substances which 25 are known per se, in particular natural polymers, modified or synthetic. Examples of thickening agents (G) that can be used are polysaccharides, polysaccharide derivatives and (co) poly (meth) acrylic acids and / or (co) poly (meth) acrylamides, for example xanthan gum, cellulose gum, guar gum, dextrins, gum arabic, carboxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, acrylyl-modified polysaccharides, copoly (meth) acrylic acids / (meth) acrylamides and optionally partially hydrolyzed poly (meth) acrylamides. Of these, preference is given to hydrophilic resins which are viscoelastic and preferably also pseudoplastic and non-thixotropic in aqueous solution, for example xanthan gum, cellulose gum, guar gum, dextrins, gum arabic, hydroxyethylcellulose, hydroxypropylcellulose and carboxymethylcellulose, or (co) polymers of (meth) acrylic acid and / or (meth) acrylamide of which particular preference is given to xanthan gum, homopolyacrylamides, copolyacrylamide-acrylic acid and partially saponified polyacrylamides. Advantageously at least some of the acid groups, particularly the carboxylic acid groups, are in the form of salts (so that the respective products are soluble in water), for example as alkali metal salts (mainly sodium salts) . They can be used as a dry substance (for , *, ^ d. i. . example as those that are commercially available). If thickening agents (G) are used, they are advantageously used in amounts such that the viscosity of the concentrated aqueous compositions () [ie of the concentrated colloidal solutions, aqueous, or concentrated aqueous dispersions (W)] is less than 5000 mPa s, in particular at values less than or equal to 1000 mPa-s, preferably in the range of 50 to 1000 mPa • s. The concentration of the thickening agent (G) in () is advantageously low, in particular lower than that of (Ps), and is calculated as a dry substance, for example less than or equal to 5% by weight, advantageously from 0 to 4% by weight. weight, preferably from 0.01 to 2% by weight, particularly preferably from 0.1 to 1% by weight. If desired, the aqueous compositions () in addition to (Ps) and optionally (G), may contain additional additives, in particular one or more of the following components: (X) a non-ionogenic or anionic surfactant, or a mixture of nonionic and / or anionic surfactants, (Y) an agent for adjusting the pH, and (Z) at least one additive for the formulation. The appropriate surfactants (X) are mainly the following: (Xi) a non-ionogenic surfactant or a mixture of non-ionogenic surfactants, having a Hydrophilic-Lipophilic Balance (HLB) greater than or equal to 7, and (X2) an anionic activity surfactant, which is a carboxylic acid or sulfonic acid or a partial ester of sulfuric acid or a partial ester of phosphoric acid, or a salt thereof, or a mixture of those surfactants with anionic activity, having an HLB greater than or equal to 7, or mixtures of two or more more of the surfactants (Xi) and (X2), in particular at least one surfactant (Xj.). The surfactants (Xi) and (X2) generally have a dispersing character, in particular an emulsifying character. Suitable surfactants (Xi) are generally known compounds, essentially those having an emulsifying or dispersing character. Emulsifiers or dispersants of a non-ionogenic character are known in great quantity in the art and are also described in the specialized literature, for example in M.J. SCHICK "Non-ionic Surfactants" (Volume 1 of "Surfactant Science Series", Marcel DEKKER Inc., New York, 1967). Non-ionogenic, appropriate dispersants (Xi) are mainly oxyalkylation products of alcohols Fatty acids, fatty acids, fatty acid monoalkanolamides or dialkanolamides of fatty acids (in which "alkanol" represents especially "ethanol" or "isopropanol") or partial fatty acid esters, of aliphatic polyols from trifunctional to hexafunctional or, in addition , interoxyalkylation products of fatty acid esters (for example of natural triglycerides), wherein the appropriate oxyalkylating agents are the alkylene oxides of 2 to 4 carbon atoms and optionally the styrene oxide, and preferably at least 50% of the oxyalkylene units, introduced, are oxyethylene units; Advantageously at least 80% of the oxyalkylene units, introduced, are oxyethylene units; particularly preferably all the oxyalkylene units introduced are oxyethylene units. The starting materials for the addition of the oxyalkylene units (fatty acids, monoalkanolamides or dialkanolamides, of fatty acids, fatty alcohols, fatty acid esters or fatty acid polyol partial esters) can be any desired, conventional products, as used for the production of these surfactants, especially those having from 9 to 24, preferably from 11 to 22, particularly preferably from 16 to 22, carbon atoms, in the fatty radical. The fatty radicals can be unsaturated or Í .Í..L .Í. , A. A.l. ^ Saturated, branched or linear; mention may be made, for example, of the following fatty acids: lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, aracaric or eicosanoic acid, and behenic acid, and technical grade fatty acids, for example fatty acid bait, coconut fatty acid, technical quality oleic acid, liquid resin fatty acid and technical grade soy acid, and products of the hydrogenation and / or distillation thereof; examples of monoalkanolamides, or of fatty acid alkanolamides, which may be mentioned, are the monoethanolamides or diethanolamides or monoisopropanolamides or diisopropanolamides of these acids; the fatty alcohols which may be mentioned are the derivatives of the respective fatty acids mentioned and synthetic alcohols, for example those of the oxo synthesis of the Ziegler process and / or the Guerbet process [for example isotridecanols, Alfol grades (for example Alfol 10, 12 or 14) and 2-butyloctanol]. The partial esters of these polyols, which may be mentioned, are, for example, the esters of mono- or di-fatty acids, of glycerol, erythritol, sorbitol or sorbitan, in particular monooleates or dioalletes, or monostearate or distearates of sorbitan. Of these products preference is given to oxyalkylated fatty alcohols, especially the products of the oxyethylation of linear fatty alcohols, in particular ... ^ ÍÁt. those of the following average formula.

R? -0- (CH2-CH2-0) p-H (II), wherein Ri means a linear, aliphatic hydrocarbon radical, having 9 to 22 carbon atoms, and p means a number from 4 to 40, or mixtures of those surfactants. The HLB value of the surfactants (Xi) is advantageously in the range of 7 to 20, preferably in the range of 8 to 16. Of the compounds of the formula (II) particular preference is given to those in which Rx contains from 11 to 18 carbon atoms. Suitable surfactants with anionic activity (X) are in general known per se acids (or salts thereof) which have a surfactant character, as they are usually used as dispersants, for example, as emulsifiers or as detergents . These anionic compounds, surfactants, are known in the art and are described in great quantity in the specialized literature, for example in W.M. LINFIELD "Anionic Surfactants" (Volume 7 of "Surfactants Science Series", Marcel DEKKER Inc., New York, 1976). The surfactants with appropriate anionic activity are in particularly those containing a lipophilic radical (in particular the radical of a fatty acid or an aliphatic hydrocarbon radical of a fatty alcohol) containing, for example, from 8 to 24 carbon atoms, advantageously from 10 to 22 carbon atoms, in particular from 12 to 18 carbon atoms, and can be aliphatic or araliphatic, and wherein the aliphatic radicals can be linear or branched, saturated, or unsaturated. In the case of carboxylic acids, the lipophilic radicals are preferably purely aliphatic, while in the case of sulphonic acids, the lipophilic radicals are preferably purely aliphatic or araliphatic, saturated radicals. The carboxylic or sulphonic acid group can be linked directly to the hydrocarbon radical (in particular as a fatty acid, for example in the form of soaps, or as an alkanesulphonic acid) or through a bond which is interrupted by at least one heteroatom and is preferably aliphatic. Carboxyl groups can be introduced, for example by the oxidation of -CH2-OH groups, the carboaxyalkylation of hydroxyl groups or the monoesterification of a hydroxyl group as a dicarboxylic anhydride, for example in a molecule such as that described above as starting material for oxyalkylation, to give the non-ionogenic surfactants or also oxyalkylation products of the such, i ... you. ». «. > .. - * ~ The same, wherein the oxyalkylation can be carried out using oxiranes, mainly ethylene oxide, propylene oxide and / or butylene oxide and optionally spent oxide, and preferably at least 50% by weight. mol of the oxiranes used is ethylene oxide; for example, these are products of the addition of 1 to 12 moles of oxirane in one mole of hydroxyl compounds, particularly as mentioned above as starting material for oxyalkylation. The carboxyalkylation can be carried out using mainly haloalkanecarboxylic acids, advantageously those in which the haloalkyl radical contains from 1 to 4 carbon atoms, preferably 1 or 2 carbon atoms, wherein halogen represents mainly chlorine or bromine, and the acid group can optionally found in the salt form. A carboxyl group can also be introduced, for example, by the monoesterification of an aliphatic dicarboxylic acid, for example by the reaction of a hydroxyl compound with a cyclic anhydride, for example with a phthalic anhydride or an aliphatic anhydride having 2 or 3 carbon atoms between the two carboxyl groups, for example succinic anhydride, maleic anhydride or glutaric anhydride. For example, groups of partial ester of phosphoric or sulfuric acid can be introduced in an analogous manner by esterification. The sulfonic acids HANDLE.

Suitable products are essentially products of the sulphonation of paraffins (produced for example by sulfodoration or sulfooxidation), of alpha-olefins, or alkylbenzenes and of unsaturated or alternatively condensed fatty acids of formaldehyde of sulfonated aromatic compounds (for example of sulfonated naphthalene). Surfactants with anionic activity are advantageously used in the form of salts, wherein for hydrophilizing cations for the formation of salts, in particular metal cations Alkaline (for example lithium, sodium, or potassium) or ammonium cations [for example those mentioned above] or alternatively alkaline earth metal cations (for example calcium or magnesium), are preferably taken into consideration. Of surfactants with activity 15 anionic (X2), those which do not contain an ester group are preferred, especially soaps, in particular amine soaps, as well as the carboxymethylation products of oxyethylated fatty alcohols and sulphonic acids, preferably in the salt form as 20 was mentioned above. Particularly as alkali metal salts. The surfactants (X) are advantageously employed in amounts that are sufficient to allow (Ps) and, if used, (G) to disperse well in the 25 aqueous phase and to allow a colloidal, aqueous solution, tViUrf **** '"" •' particularly stable, or preferably so that the dispersion of (Ps) and (G) is formed. The amount of (X) used, is advantageously = 80% of (Ps), preferably = 50% by weight of (Ps) / particularly preferably from 0 to 30% by weight of (Ps).

If (P?) Is self-dispersible to be colloidally soluble [preferably (Ps')], (X) is not necessary. Suitable as (Y) are any desired compounds, known per se, as are normally used to adjust the pH of textile treatment agents, for example the bases mentioned above, or alternatively regulatory salts, such as for example sodium acetate or monosodium or bisodium phosphate, or occasionally also acids (for example a mineral acid, in particular hydrochloric acid, or sulfuric acid, or a low molecular weight aliphatic acid, preferably having 1 to 4 carbon atoms, preferably formic acid, acetic, or lactic acid The pH of the compositions (W) can vary widely and can be adjusted optionally, for example in the range of 3 to 10, preferably 4 to 9, particularly preferably 5 to 8, by the addition of (Y) .The compositions () may contain in i? .A.JkJL * - * .t * iA¿ ?? t ??? .- aaSaj .. »». »n« • '™ »' * < m > R ** "additional and optionally at least one formulation additive (Z), in particular (Zx) an antifoam or (Z2) an agent that inhibits bacterial or microbicidal growth, or (Z3) a bleaching agent. As (Zi), conventional defoamers can be used, for example on the basis of paraffins, mineral oil, fatty acid bisamides and / or hydrophobic silicic acid, for example commercial products, which can be used at the recommended concentrations in each case. Suitable as (z2) are especially fungicides and bactericides, for example commercial products that can be used in recommended concentrations in each case. As (Z3) conventional bleaching agents, in particular reducing blasting agents, such as for example sodium bisulfite, can be used. Suitable concentrations of (Z) are, for example, in the range from 0 to 4% by weight, preferably from 0.001 to 2% by weight, particularly preferably from 0.002 to 1% by weight, based on (W) . Particularly worth mentioning are the dispersions (W) consisting essentially of (Ps) and water, and optionally one or more of the additives (G), (X), (Y) and / or (Z) [for example of ( Ps), (G) and water and optionally (X), (Y) and / or (Z)], particularly the dispersions (W "), consisting essentially of (Ps'), water and preferably (G) and optionally also one or more of the additives (Y) and / or (Z), particularly of (Ps") or (Ps' '') and water and preferably (G) and optionally one or more of the additives (Zi), (Z3) and / or (Y). Particularly preferred dispersions (") are, for example, those consisting essentially of (Ps") / water and at least one of the components (Z2) and (G) and optionally (Y), or wherein (Ps) is different from (Ps'), those that consist essentially of water, (Ps) and (X) and (Z2) and optionally (G) and / or (Y). The compositions () containing (G) and / or X, according to the invention, in particular (W) and preferably (W ") can be produced in a very simple manner, through the appropriate mixing of the components, in particular mixing (Ps) / for example as a melt, in the presence of water, with (G) and / or (X), and optionally adding additional additives, in particular one or more of (Y) and / or (Z) The polyesters described above (Ps), preferably in the form of aqueous compositions (W), are used as wet-acting lubricants for textile fabrics in pieces, ie as auxiliaries in the treatment of textile fabrics with treatment agents ( T) (for example for pretreatment, dyeing, optical brightening or after-treatment) under conditions under which, per se, folds may be formed otherwise by transport or friction may occur on the substrate or on the substrate, in particular in the form of rope or tubular shape, wherein the compositions () to be used according to the invention, serve particularly to prevent stabilization and marking of the folds formed during the treatment and to prevent frictional damage. These processes are essentially depletion processes from the scarce liquor (weight ratio of liquor / substrate, for example, which is in the range of 3: 1 to 40: 1, mainly from 4: 1 to 20: 1), in particular in jet-dyeing machines or in tubs with aspads, under the conditions and times of the treatment which are usual per se (for example in the range of 20 minutes to 12 hours) as in particular in tubs with aspads and especially in jet dyeing machines. The aqueous compositions (W) or the polyesters (Ps) / inclusive in the presence of (G), have an optimal wet sliding behavior, such that the effective distribution on the surface of the wet fabric is possible in its use , after which they can be removed again, in general by discharging the liquid and / or by washing and / or rinsing operations, as the process requires. The treatment agents (T) are generally textile chemicals (in particular textile finishing chemicals) that can be removed from the substrate again for the part that is not fixed to the substrate, for example by washing and / or rinsing, after of the respective treatment of the substrate. As (T) in particular the following subgroups are appropriate: (Ti) pretreatment agents (mainly wetting agents and detergents), (T2) main treatment agents (mainly wetting agents, dyes, dyeing aids and optical brighteners), and (T3) after-treatment agents (mainly finishing agents, detergents and reducing agents); wherein the respective treatments are carried out in an aqueous medium. Processes in which folds can be formed (ie, folds by transports), in the textile substrate, essentially mean those in which the wet substrate tends to be in folds during its transport in the dyeing machine, due to the action and possibly to the the interference of various forces. The creases that are formed in these processes may result, per se, in the marking of the crease points, due to the stabilization during the treatment process, which may result in disadvantages mentioned at the beginning. In these processes, the polyesters (Ps) or the compositions (W) serve as wet-acting lubricants, in particular as agents for preventing transport folds, to the extent that they favor or facilitate the slippage of the wet fabric or of the fabric. the wet folds and in this way can prevent the damage of the stabilization of the folds by transport. The treatment processes that would cause per fold by transport are mainly treatments on a reel (particularly in a vat with nozzles) or especially in jet dyeing machines, in which the substrate is fed in each cycle above the reel or through the nozzle, at which point the formation of the fold and / or the forces acting on the folds, which can result in the stabilization of the folds, are the strongest. Processes in which the friction can occur on the textile substrate or on it, essentially mean those in which the wet substrate, during its transport in the dyeing machine, is rubbed against the legs of the adjacent apparatus or parts of the substrate, at high working speed, the passage through the nozzles and / or a change in the direction and / or speed of transport. The points of friction formed in these processes can result in the marking of the same during the treatment process and the deterioration of the physical properties of the substrate. In these processes (the polyesters (Ps) or the compositions () serve as wet-acting lubricants to the extent that they favor or facilitate the sliding of the wet fabric (particularly on the adjacent fabric or on the metal) and thus can prevent friction damage of the substrate.The possible treatment processes that could cause, per se, points of friction, are mainly the treatments in jet dyeing machines, in which the substrate is passed in each cycle through the nozzle, point at which the relative acceleration and / or the forces acting on the substrate, are the greatest, and in which the substrate is pulled in each cycle from its own position in the liquor, towards the nozzle, Such a way that the acceleration of the substrate against substrate or the acceleration of the substrate against the metal, can cause, in the respective points, friction in those places, which can result in friction points. Suitable substrates for the process according to the invention and for the wet-acting lubricants according to the invention are in general any desired substrates that can be used in those processes, mainly those containing synthetic fibers, especially polyester fibers, optionally in a mixture with other fibers, in particular with other synthetic fibers (for example acrylic fibers or polyurethane fibers) or optionally modified natural fibers, for example wool, silk or optionally modified cellulose (for example cotton, linen, jute, hemp, ramie, viscose rayon or cellulose acetate), wherein the fiber blends that may be mentioned are, for example, polyester / polyester / polyacrylic cotton, polyester / polyamide, polyester / polyurethane and polyester / cotton / polyurethane. The textile substrate can be used in any desired form as piece fabrics, which can be treated in the mentioned processes, for example as tubular articles, open textile fabrics or alternatively as semi-finished articles, essentially in the form of a rope or tubular form, as is appropriate for winding machines or especially in jet dyeing machines; woven articles and woven fabrics can be used (for example, single-point, thin-to-thick, or interlocking articles, fine-to-thick woven fabrics, fluffy articles, velvet and textiles made in embroidery and / or open work), in particular articles made from microfibers, mainly polyester microfibers and mixtures thereof with other corresponding fine fibers. Wet-acting lubricants, according to the invention, that is to say polyesters (Ps) optionally in the form of aqueous compositions (), in particular concentrated compositions (W), are advantageously used in concentrations such as the folds marking and the Formation of friction points are effectively prevented in the respective process. They are distinguished by their effectiveness and performance and can exhibit a very high action at very low concentrations; they are advantageously used in concentrations corresponding to 0.01 to 2 grams of (P =) per liter of liquor, preferably 0.02 to 1 gram of (Ps) per liter of liquor, particularly preferably 0.04 to 0.5 grams of (Ps) per liter of liquor. They can be produced in a simple and easily reproducible form, in particular as described above, and are also distinguished by the constancy of their properties, even in different batches, and the concentrated aqueous compositions (W) are distinguished by their storage stability, shipping , transfer and pumping. Since the wet-acting lubricants, according to the invention, ie polyesters (P?) Or compositions (W) are also distinguished by their great independence from temperature variations and are substantially resistant to electrolytes, they can t .1 ... »is also used in a very wide selection of treatment conditions, as is the case for treatment with chemicals (T) for textiles in industry, in particular for pretreatment with (Ti), for dyeing or optical brightening with (T2) and after-treatment with (T3), for example with (Ti) during desizing or during bleaching, with (T2) during dyeing or optical brightening or with (T3) during after-treatment, but especially during dyeing or optical brightening. The dyeing or optical brightening can be carried out using any desired dyes or optical brighteners (T2 ') and optionally dyeing auxiliaries (T2") which are appropriate for the respective substrate and process and for the desired effect. containing polyesters, any of the corresponding, desired dyes, for example disperse dyes, and optionally dyeing auxiliaries (eg carriers and / or color equalizing agents), wherein the dyeing of substrates made from mixtures can be employed. of fibers, in particular made of cellulose fibers and synthetic fibers, can also be carried out using additional, corresponding dyes, in particular reactive dyes, direct dyes, vat dyes or sulfur dyes (and optionally also _j ____ j_¿i_ &. .. ril., A ^ s4 ^ í 'fc ^' - 'jfc ^^^ corresponding dyeing aids). The processes can pass through any desired temperature regions as used for the respective substrate and for the treatment agent employed and as a result of the apparatus and the desired purpose, for example from room temperature (for example at the beginning of the dyeing ) up to high temperature conditions (for example in the range of 102 to 180 ° C in the closed device). The electrolyte content of the liquors can also be as desired, as is normally used for the respective process, for example corresponding to the concentrations of the alkali metal salt (for example sodium chloride or sodium sulfate) and / or concentrations of carbonate or alkali metal hydroxide, as used in dyeing with these dyes, either as a mixture of components in commercially available dye preparations and / or as an auxiliary for the rate of absorption in the optical dyeing or polishing, or also as alkalis used in dyeing with sulfur dyes, vat dyes or reactive dyes. The pH values can be as desired, as appropriate for the respective substrates, colorants and application processes. For polyester dyeing with dispersion dyes, suitable pH values are found, for example, in the acid region i¡¡¡jí, l.? * Í your * * '.L-.lt? t Mra (for example in the pH range of 4 to 6, preferably from 4.5 to 5.5) or alternatively, with the use of corresponding disperse dyes which are equally suitable for alkaline dyeing, in the alkaline pH region (for example at pH> 8, mainly in the pH range of 8.5 to 10). Polyesters (Ps) or compositions (W) are advantageously used as wet-action lubricants, in dyeing or optical brightening, especially in jet-dyeing machines (both with dynamic transport of liquor and those with aerodynamic transport of liquor), preferably for dyeing polyester-containing substrates, particularly preferably those consisting essentially only of polyester fibers (particularly also microfibers). For use in the treatment of polyester fibers, the particularly preferred oligoesters or polyesters (Ps) are polyesters or oligoesters (Ps' '') in which the hydrophobic part originates from starting compounds (Ax) and (Bi) or is formed from monomer units that are directly homologous to (particularly ± 1 to 2 carbon atoms) or preferably identical to those that originate or form from the polymer fiber to be treated. In this way, if for example the polyester substrate that Ajfa A * • - M * l t. »? I &. < #,, i ».: - áft fcá» - A. to be treated is a polyester made from terephthalic acid and ethylene glycol (ie a polyethylene terephthalate), the hydrophobic part of (Ps) or (Ps' '') consists essentially preferably of ester units made of terephthalic acid and ethylene glycol and / or propylene glycol, while the hydrophilic part then consists essentially in a preferred form of (A2), in particular a polyethylene glycol and / or (E2?), which is then preferably a product of the addition of ethylene oxide on an alcohol aliphatic of 1 to 18 carbon atoms, preferably a low molecular weight alkanol (particularly an alkanol of 1 to 4 carbon atoms), and the polyester or oligoester (Ps) or (Ps' '') optionally also contains as a constituent , a copolymerized compound (Hi). Due to the high resistance to temperature variations even at relatively high temperatures, the wet-acting lubricants according to the invention, ie polyesters (P?) Or compositions respectively (W) can be used under the conditions and optimally exhibit their activity, without its action being impaired. Due to the stability under high shear force of the wet-action lubricants (W), particularly those consisting only of (Ps) and (G) and optionally (X), (Y) and / or (Z), in aqueous dispersion or colloidal solution, these are also particularly íit.? j., J:., í & MÍ,., ¡.. ^ Ü > «I lí. h.i. Suitable for use as wet-acting lubricants in jet-dyeing machines, especially also in those in which articles or liquor are subjected to extremely high dynamic stress, or in which liquor very high shear forces develop elevated. The compositions () or the polyesters (or oligoesters) (Ps) [in particular (Ps ') or (P? ") Or inclusive (Ps' '')] have, even in very little liquors, for example, at ratios of liquor / articles = 15/1, particularly also = 10/1, a wet, extremely shallow, very good sliding action, particularly in the degree to which they cause the lubricant to accumulate on the surface of the articles and which liquor accumulates in the immediate vicinity of the lubricant and, as a flowing liquor layer, facilitates the wet sliding of the articles to a surprisingly high degree through the use of wet-acting lubricants (Ps) in accordance with the invention, particularly in the form of its aqueous compositions (W), in particular optically-dyed and / or optically-polished materials can be obtained, in which the action of the respective treatment agent (pretreatment agent, dye, optical brightener or post-treatment people) is not deteriorated and an optimal appearance of the articles is obtained, even with the use of very little liquors, even if almost all the liquor is on the articles during the process and if almost no liquor remains on the base of the device. The effectiveness of the polyesters (Ps) and of the preparations () as wet-acting lubricants (or slip agents) can be determined, for example, as follows, by measuring the coefficient of friction: a first piece of fabric is submits tension in contact with the inner base of a flat, shallow pan, fixed at one end with a clamp and covered with a quantity of liquor corresponding to the liquor ratios that are usual in practice; a 200 gram weight with a flat, smooth rectangular base, on which a second piece of the same fabric is tensioned and fixed, placed horizontally on top. The weight placed on top covered with the second piece of fabric (= "sled") is then pulled in the longitudinal direction of the tray and the first piece of cloth under tension (= "track") until it begins to move and until that reaches a constant speed, and the force of traction necessary to put the "sled" in motion horizontally on the "track" is determined, starting from the end fixed with the clamp, and to move it horizontally in the direction of traction at constant speed. In this way you can determine both static friction and jfcJi = Z? the kinetic friction and therefore the coefficient of static friction and the coefficient of kinetic friction. If N0 denotes the normal force (ie, the weight of the "sled" on the "track"), Zs denotes the horizontal pulling force that is necessary to put the "sled" in motion on the "track", and Z? denotes the horizontal pulling force that is necessary to maintain the "sled" moving at a constant speed on the "track", the static friction coefficient μs can be expressed by the following formula: Ms = Z? N0 and the kinetic friction coefficient μ? using the following formula: μ? = Z? Do not The use of (Ps) allows not only μ? but also μs is reduced to very low values. The overall effectiveness of wet-action lubricants can be observed visually by inspecting the correspondingly treated articles, in order to determine the rubbing points (or rubbing marks) or fold marks by transport (for example in dyeing).

In the following examples, parts denote parts by weight and percentages denote percentages by weight; the temperatures are given in degrees Celsius. The products added in addition to the oligoesters in the examples (examples of production, dispersion and application, are commercially available products.) In the application examples, the dyes are used in the commercially available dry form, with a pure dye content of approximately 25%. %, and the concentrations provided refer to this form and are based on the weight of the substrate, Cl represents colorimetric index.

Example 1 194.2 grams of dimethylterephthalate, 39.8 grams of ethylene glycol, 96.6 grams of 1,2-propylene glycol, 9.2 grams of glycerol, 0.37 grams of anhydrous sodium acetate and 0.19 grams of titanium tetraisopropoxide are introduced into a four-necked flask with a capacity of 1 liter, which is equipped with an agitator, internal thermometer, gas inlet pipe and a 20 cm Vigreux column with Causen bridge. The system then becomes inert with nitrogen and heated to 165-167 ° C within half an hour. The temperature increases to 215-220 ° C in the course líaíAk. ? JH4 - * * - - J * -? * ^ - # i.t, i ^ & ^. • *. ^. ^ ° ... *. & & amp; & amp; . 2.5 hours more. The transesterification, and consequently the distillation of methanol, begins at an internal temperature of about 165 ° C. After about 5 hours, more than 98% of the expected amount of methanol has been distilled. The batch is cooled to 80 ° C, and then 72 grams of methylpolyethylene glycol 750, 91.2 grams of methylpolyethylene glycol 1820, and 387.5 grams of polyethylene glycol 1500 are added. The flask becomes inert again and heated to 200-220 ° C, the pressure it is then lowered to 1-5 mbar in the course of 1 hour, and the condensation is carried out at 220-240 ° C for a further 2-5 hours, during which a mixture of ethylene glycol and 1,2-propylene glycol is distilled . After completion of the condensation, the system is aerated with nitrogen and cooled. The product solidifies with cooling at room temperature to give a solid material. Yield of 730 grams. More oligoesters are produced analogously to Example 1 using the following starting materials: Example 2 194. 2 grams of dimethylterephthalate 39.8 grams of ethylene glycol 96.6 grams of 1,2-propylene glycol 1. 4 grams of pentaerythritol 0.37 grams of anhydrous sodium acetate 0.19 grams of titanium tetraisopropoxide 72.0 grams of methyl polyethylene glycol 750 91.2 grams of methyl polyethylene glycol 1820 387.0 grams of polyethylene glycol 1500.

Yield of 725 grams.

Example 3 145. 6 grams of dimethylterephthalate 109.0 grams of 1,2-propylene glycol 1.4 grams of mannitol 0.28 grams of anhydrous sodium acetate 0.14 grams of titanium tetraisopropoxide 82.2 grams of methyl polyethylene glycol 750 581.3 grams of polyethylene glycol 3000.

Yield of 800 grams.

Example 4 194. 2 grams of dimethylterephthalate 39.8 grams of ethylene glycol 96. 6 grams of 1, 2-propylene glycol 6.0 grams of trimethylolethane 0.37 grams of anhydrous sodium acetate 0.19 grams of titanium tetraisopropoxide 54.0 grams of methyl polyethylene glycol 750 68.4 grams of methyl polyethylene glycol 1820 68.9 grams of polyethylene glycol 1500 129.2 grams of polyethylene glycol 800 258.3 grams of polyethylene glycol 3000 .

Yield of 760 grams.

Example 5 223. 3 grams of dimethylterephthalate 45.7 grams of ethylene glycol 111.1 grams of 1,2-propylene glycol 1.6 grams of pentaerythritol 0.42 grams of anhydrous sodium acetate 0.22 grams of titanium tetraisopropoxide 28.2 grams of methyl polyethylene glycol 750 35.7 grams of methyl polyethylene glycol 1820 445.6 grams of polyethylene glycol 1500.

Yield of 720 grams Example 6 213. 5 grams of dimethylterephthalate 43.7 grams of ethylene glycol 106.2 grams of 1,2-propylene glycol 4.5 grams of pentaerythritol I 0.41 grams of anhydrous sodium acetate 0.21 grams of titanium tetraisopropoxide 39.6 grams of methyl polyethylene glycol 750 50.2 grams of methyl polyethylene glycol 1820 426.3 grams of polyethylene glycol 1500.

Performance of 720 grams Example 7 174. 7 grams of dimethylterephthalate 19.0 grams of ethylene glycol 107.5 grams of 1,2-propylene glycol 3.3 grams of trimethylolethane 0.33 grams of anhydrous sodium acetate 0.17 grams of titanium tetraisopropoxide 83.8 grams of methyl polyethylene glycol 750 174.4 grams of polyethylene glycol 1500 348.8 grams of polyethylene glycol 3000.

Yield of 765 grams.

Example 8 194. 2 grams of dimethylterephthalate 39.8 grams of ethylene glycol 96.6 grams of 1,2-propylene glycol 1.0 grams of glycerol 0.37 grams of anhydrous sodium acetate 0.19 grams of titanium tetraisopropoxide 226.5 grams of the adduct of 80 moles of ethylene oxide on 1 mole of fatty alcohol of bait 387.5 grams of polyethylene glycol 1500.

Yield of 800 grams.

Example 9 233. 0 grams of dimethylterephthalate 47.7 grams of ethylene glycol 115.9 grams of 1, 2-propylene glycol 8.1 grams of 1, 2, 3-hexanotriol 0.44 grams of anhydrous sodium acetate ? -Á & * iéiá, go? A.M- * Á ^ - *, 0.23 grams of titanium tetraisopropoxide 22.8 grams of n-butyl polyethylene glycol 200 465.0 grams of polyethylene glycol 1500 Performance of 700 grams Example 10 291. 2 grams of dimethylterephthalate 59.7 grams of ethylene glycol 144.9 grams of 1,2-propylene glycol 310.0 grams of polyethylene glycol 800 123.3 grams of methylpolyethylene glycol 750 0.6 grams of anhydrous sodium acetate 0.3 grams of titanium tetraisopropoxide.

Yield of 710 grams.

Dispersion Wl Initially, 337 parts of water are introduced, and 2.0 parts of xanthan gum ("Kelzan" polysaccharide gum from Kelco Biopolymers) are added with stirring. After 6 hours a colloidal solution is presented, which is further diluted with 120 parts of water. 40 parts of the oligoester produced according to Example 1, in molten form (65-70 ° C), are then extracted under reduced pressure (residual pressure of 300 mbar). A viscous, white and homogeneous dispersion is formed, which is stirred for an additional 1 hour. The vacuum is then broken using nitrogen, and then a part of the biocide is added (1.5% aqueous solution of a 1/1 mixture of 5-chloro-2-methyl-4-isothiazolin-3-one hydrochloride and hydrochloride 2). - methyl-4-isothiazolin-3-one), the pH is adjusted to 7 (using a solution of sodium hydroxide or glacial acetic acid, depending on the quality of the water), and the product is then discharged.

Dispersion W2 The procedure is as described for the Wl dispersion, with the difference that instead of the oligoester of Example 1, the same amount of the oligoester of Example 2 is used.

W3 dispersion 458.5 parts of water are initially introduced, and 0.5 parts of a partially hydrolyzed polyacrylamide (which has a weight) are added with stirring. average molecular M = 20 x 106, with 27 ± 3 mol% of CH2-CH-COONa monomer units). As soon as a homogenous solution is present (after about 12 hours), the mixture is heated to 50 ° C, and 50 parts of the oligoester produced according to Example 2 are added. A fine, homogeneous dispersion is formed, which it is cooled to room temperature, and 1 part of the same biocide is added as in the Wl dispersion. The product is subsequently discharged.

Dispersion W4 An 8% aqueous dispersion of the oligoester produced according to Example 3 is produced by initially introducing the water, introducing the oligoester in molten form, and heating the mixture to 80 ° C with stirring, and, as soon as a dispersion is present. homogenous, the dispersion is cooled to room temperature. Before the discharge, 0.2% of the same biocide is added as in the Wl dispersion.

Dispersions from W5 to Wll The procedure is as described for Wl scattering, with the difference that instead of Oligoester of Example 1, the same amount of the oligoester of each of Examples 4 to 10 is employed.

W12 dispersion 320. 7 parts of ethylene glycol, 13.6 parts of diethanolamine and 12.9 parts of succinic anhydride are allowed to react at 60 ° C for 3 hours. Then 7.2 parts of potassium hydroxide, 334.5 parts of dimethylterephthalate and 0.7 parts of manganese (II) acetate are added as a catalyst. The mixture is heated to 180 ° C under nitrogen, during which methanol and water are distilled. The reaction melt, obtained, is cooled to 120 ° C, reacted with 646.5 parts of polyethylene glycol 750 monomethyl ether, and reheated to 180 ° C under reduced pressure. After 2 hours at 180 ° C, approximately 206.9 grams of distillate are obtained. The mixture is then cooled to 120 ° C. Approximately 1,000 parts of molten mass are obtained, at 120 ° C, which are added to a mixture of 3,750 parts of water and 250 parts of the adduct of 10 moles of ethylene oxide to 1 mole of oleyl alcohol, at a temperature of 50. at 60 ° C. The mixture is subsequently cooled to room temperature. 5,000 parts of the W12 aqueous dispersion are obtained.

Application Example A [Dyeing Polyester in Jet Dyeing Machine (Laboratory Machine, for Dyeing Jet, Mathis)] A piece of polyester duvetine, automotive, is dyed, as follows, in a Laboratory Machine, to Dye Jet, Mathis: 90 parts of polyester duvetina are introduced, to the Jet Dyeing Machine, which contains 900 parts of aqueous liquor and 1 gram / liter of dispersion Wl. 0.62% Disperse Yellow 52 CI, 2.3% Disperse Red 86 CI, 0.5% Disperse Blue 77 CI, 0.5 grams / liter of an anionic dispersant (sulfonated naphthalene formaldehyde condensate) and 0.5 grams / liter are added to the liquor. a color equalizing agent (mixture of sulfonated aromatic compounds), the pH is adjusted from 4.5 to 5 with acetic acid, and the liquid is heated from room temperature to 130 ° C at a rate of 1 ° C / minute, and it is continued dyeing at 130 ° C for 30 minutes. The mixture is then cooled to 70 ° C, and the bath is discharged. 2 grams / liter of sodium hydrosulfite and 4 milliliters / liter of sodium hydroxide 36 ° Bé are added in a fresh bath of 900 parts of water, the mixture is heated up to 80 ° C and the treatment is carried out, for the reductive purification, at this temperature for 20 more minutes. Followed by this it is cooled again and rinsed twice with cold water. After the liquor is discharged, the products are discharged and dried in the open air at room temperature. The products are uniformly dyed, of a dark red color, which have a villous, homogeneous surface and which have a very attractive appearance.

Application Example B [Tricot dyeing of polyester microfibers in the Jet Dyeing Machine (Laboratory Machine, for Dyeing, Mathis)] A piece of polyester microfiber knit is dyed as follows, in a Lab Machine, for Dyeing, Mathis: 90 parts of polyester microfiber knit are introduced to the Jet Dye Machine, which contains 900 parts of aqueous liquor and 1 gram / liter of dispersion Wl. 0.11% of Scattered Yellow 52 C.I., 0.46% of Disperse Red 86 C.I., 0.095% of Disperse Blue 77 C.l. are added to the liquor. and 0.5 grams / liter of an anionic dispersant (sulfonated naphthalene formaldehyde condensate), the pH is adjusted from 4.5 to 5.0 with acetic acid, the liquor is heated from room temperature to 130 ° C at a rate of 1 ° C / minute , and the dyeing is continued at 130 ° C for 15 minutes. Followed by this it is cooled again and rinsed twice with water.

After the liquor is discharged, the products are discharged and dried in the open air at room temperature. Uniformly dyed, dark gray products are obtained, which have a soft appearance to the touch and very attractive.

Application Example C [(Dyeing of a polyester / viscose rayon mix fabric with dispersion dyes and reactive dyes, in the Jet Dyeing Machine (Laboratory, Dyeing, Mathis)] 100 parts of viscous rayon / polyester blend fabric, 70/30, are introduced into 900 parts of an aqueous liquor, heated to 50 ° C, containing 1 part of Wl dispersion and 60 parts of sodium sulfate (Glauber's salt). ). To the bath, a solution of 0.35 parts of Reactive Blue 41 C.l. and 0.73 parts of Reactive Green 12 C.I., in 50 parts of water. After 20 minutes, a solution of 1.5 parts of sodium carbonate in 50 parts of water is added, and the dyeing is continued at 50 ° C for 20 minutes. Then, a dispersion of 0.073 parts of Yellow Scattered 54 C.l. is added to the bath. and 0.53 parts of Dispersed Blue 60 C.l. in 50 parts of water, and the pH of the bath is adjusted from 4.5 to 5.0 with acetic acid. The mixture is heated after 50 ° C to 120 ° C at a rate of 1.5 ° C / minute.

The dyeing is carried out at 130 ° C for an additional 45 minutes, and the bath is then cooled to 60 ° C at a rate of 2 ° C / minute. After finishing in a conventional way (rinsing, washing, drying) a very uniform green dyeing is obtained which has a perfect appearance for the products. The other Dispersions from W2 to W12 are used in the above Application Examples A, B and C in a manner analogous to Dispersion Wl. The results obtained in the above Application Examples A, B and C agree with the values of μs and μk respectively, and their differences? Μs and? Μk in comparison with those of the targets [ie with the same substrates and liquor, but sin (W)].

It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention. 'ßß'

Claims (17)

1. CLAIMS Having described the invention as above, the content of the following claims is claimed as property: 1. The use of end-terminated, water-dispersible or colloidally-soluble polyesters, (Ps) / characterized in that the use is as wet-acting lubricants in the treatment of textile fabrics in the piece, with a textile treatment agent (T), by a process of exhaustion of aqueous liquor under conditions in which, otherwise, in the textile substrate, they would favor the formation of folds by transport and / or the appearance of friction on the substrate or on it. 2. The use according to claim 1, characterized in that (Ps) is a polyester made of difunctional compounds (D) and monofunctional compounds (E) that are suitable for the termination at the ends, of the polyesters, and optionally oligofunctional compounds (H) which are suitable for branching polyesters. 3. The use according to claim 1 or 2, characterized in that (Ps) is a polyester (Ps') that is self-dispersible or colloidally soluble in water. 4. The use according to one of claims 1 to 3, characterized in that (Ps) is used in the form of an aqueous concentrated composition (W). 5. The use according to claim 4, characterized in that (W) is an aqueous composition which is characterized by a content of (Ps); and (G) a thickening agent. 6. Use in accordance with the claim 4 or 5, characterized in that (W), in addition to (Ps) and optionally (G), contains at least one of the following components: (X) an anionic or non-ionogenic emulsifier, or a mixture of non-ionogenic emulsifiers and / or anionic, (Y) an agent to adjust the pH; and (Z) at least one additive for formulation. The use according to claims 1 to 6, characterized in that (T) is at least one dye or at least one optical brightener. 8. The use according to claims 1 to 7, characterized in that it is in the optical dyeing or polishing of textile material made of polyester fibers, optionally mixed with other Víj &? ? ? .. Í. Í, l * ¿ i fibers, in machines for jet dyeing. The use according to one of claims 1 to 8, characterized in that it is in the optical dyeing or polishing of textile material made of polyester microfibers, optionally mixed with other fibers of comparable fineness. 10. A wet-action lubricant for the dyeing or optical brightening of textile fabrics in piece, in the form of rope or tubular, by a method of exhaustion of aqueous liquor under conditions in which, in another way, in the textile substrate, they would favor the formation of folds by transport or the appearance of friction in the substrate or on it, characterized by a content of (Ps) as defined in claim 2 or in claims 2 and 3. 11. An aqueous composition of lubricant wet-action, characterized in that it is an aqueous composition (W) which is defined as in one of claims 4 to 6, in which (Ps) is as defined in claim 2 or in claims 2 and 3. An aqueous composition of wet-action lubricant, (W), according to claim 11, characterized in that it essentially consists of (Ps) and water and at least one of the additives (G), (X) , (Y) and (Z ). lfH? HJ ~ hl? itH-r J ^ jSjLgjSgf ^? 13. A process for the production of an aqueous composition (W) containing (G) and / or (X), according to claim 12, characterized in that a melt of (Ps) is mixed in the presence of water with (G) ) and / or (X) and optionally one or more of (Y) and (Z) is added. 14. A process for the treatment of textile fabrics in piece, with a textile treatment agent (T), by methods of exhaustion of aqueous liquor, under conditions in which, in another way, in the textile substrate, they would favor the formation of folds by transport or the appearance of friction in the substrate or on it, characterized in that the process is carried out in the presence of a polyester end terminated, water dispersible or colloidally soluble, (Ps), as defined in one of claims 1 to 3, optionally in the form of an aqueous composition, (W), as defined in any of claims 4 to 6, as a wet-action lubricant. 15. The process according to claim 14, characterized in that (Ps) is eliminated at the end of the treatment process. 16. An aqueous polyester composition, (W), consisting essentially of (Ps), (G) and water and optionally at least one of the additives (X), (Y), and (Z), characterized in that (Ps ) is as defined in claim 2 or any of claims 2 and 3, (G) is as defined in claim 5, and (X), (Y) and (Z) are as defined in Claim 6. 17. An aqueous polyester composition, (W '), according to claim 16, characterized in that it consists essentially of (Ps'), (G) and water and additionally, optionally, one or more of the additives (Y) and / or (Z), in the form of a colloidal solution or an aqueous dispersion. ..íi. ¡¡.?. Ji.,.,.,. Máun