WO2014067783A1 - Water-based cationic compositions with polymers - Google Patents

Abstract

The present invention relates to a liquid textile or hard surface treatment composition, comprising by weight of the total composition (a) 0.01 to 5 wt.-% of at least one polymer, containing at least one structural unit of Formula (I), at least one structural unit of Formula (II) and at least one structural unit of Formula (III), in which R¹ stands for a hydrogen atom or a methyl group R² stands for a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, or an isopropyl group, n stands for a number selected from 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20, x, y, z independently of one another stand for numbers from 1 to 200, (b) 0.01 to 5 wt.-% of at least one cationic surfactant, (c) water.

Description

„water-based cationic compositions with polymers"

The present invention relates to a liquid composition comprising water, cationic surfactant(s) and polymer(s). The present invention also describes the use of certain polymers for opacifying water- based cationic compositions.

The adhesion of microorganisms to surfaces is undesirable, particularly in the case of pathogenic microorganisms. Adhering microorganisms frequently lead to infections or to reinfection in humans, animals and plants. Textiles and hard surfaces contaminated with viruses, bacteria, molds or yeasts are known to be treated with cationic compounds to minimize contamination. Anti- microbially active compositions and their use in washing or cleaning agents are also broadly known in the prior art.

Since the cationic compounds are effective even in very low amounts, consumers often tend to overdose the respective cleaning agent. To minimize overdosing it has been suggested to "thicken" the cleaning agents either by increasing their viscosity or by opacifying the solution of the cleaning agent in water, giving the consumer an improved and optically "more powerful" impression when using the product. Since increasing the viscosity can cause problems in fast dilution under low temperatures, adding opacifiers is a widely used approach.

Often soap is used as opacifier since it leaves the product transparent and leads to opaque solutions, once diluted with water. Soaps are often not compatible with cationic disinfecting agents and additionally need high production costs due to saponification and the high temperatures accompanied therewith.

It is an object of the present invention to provide a liquid cleaning composition for soft and hard surfaces which has improved product aesthetics by making it opaque instead of transparent (which means a concentrated formula in consumers minds), giving a cloudy ("blooming") effect once the product is diluted in water and keeps the water in the washing bucket looking clean for longer period allowing it to be used several times without compromising the performance and without the disadvantages of using soap or other expensive opacifiers.

This object is achieved by a liquid textile or hard surface treatment composition, comprising by weight of the total composition

(a) 0.01 to 5 wt.-% of at least one polymer, containing at least one structural unit of

Formula (I), at least one structural unit of Formula (II) and at least one structural unit of Formula (III),

R stands for a hydrogen atom or a methyl group

R² stands for a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, or an isopropyl group,

n stands for a number selected from 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1 , 12, 13,

14, 15, 16, 17, 18, 19 or 20,

x, y, z independently of one another stand for numbers from 1 to 200,

(b) 0.01 to 5 wt.-% of at least one cationic surfactant,

(c) water.

The compositions according to the invention can be used, for example, as textile treatment agents which contain one or more biocidal compounds and are added to the rinse cycle.

A preferred use for the compositions according to the invention is in residential cleaning processes. Accordingly, compositions according to the invention are also used in the cleaning processes of kitchen and bath areas. Preferred compositions according to the invention are opaque hard surface cleaner compositions, comprising by weight of the total composition

(a) 0.01 to 5 wt.-% of at least one polymer, containing at least one structural unit of

Formula (I), at least one structural unit of Formula (II) and at least one structural unit of Formula (III),

R stands for a hydrogen atom or a methyl group

R² stands for a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, or an isopropyl group,

n stands for a number selected from 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1 , 12, 13,

14, 15, 16, 17, 18, 19 or 20,

x, y, z independently of one another stand for numbers from 1 to 200,

(b) 0.01 to 5 wt.-% of at least one cationic surfactant,

(c) water. The compositions according to the invention contain 0.01 to 5 wt.-% of at least one polymer, containing at least one structural unit of Formula (I), at least one structural unit of Formula (II) and at least one structural unit of Formula (III), i.e. an acrylates-PEG-X-maleate-styrene copolymer wherein X denotes the number of PEG units.

The acrylates part of the copolymer, described by structural unit of Formula (II) can by acrylic acid (R = -H, R² = -H), methacrylic acid (R = -CH₃, R² = -H), acrylic acid methyl ester (R = -H, R² = -CH₃), methacrylic acid methyl ester (R = -CH₃, R² = -CH₃), acrylic acid ethyl ester (R = -H, R² = -CH₂CH₃), methacrylic acid ethyl ester (R = -CH₃, R² = -CH₂CH₃), acrylic acid n-propyl ester (R = -H, R² = -CH₂CH₂CI-I₃), methacrylic acid n-propyl ester (R = -CH₃, R² = -CH₂CH₂CH₃), acrylic acid isopropyl ester (R = -H, R² = -CH(CH₃)₂), methacrylic acid isopropyl ester (R = -CH₃, R² = -CH(CH₃)₂), and mixtures thereof.

Preferred compositions contain a polymer which has structural units derived from methacrylic acid and their esters mentioned above. Thus, compositions wherein the polymer contains at least one structural unit of formula (I la)

(Ha),

in which R² stands for a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, or an isopropyl group, are particularly preferred.

In the structural units of Formula (III) n stands for a number selected from 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1 , 12, 13, 14, 15, 16, 17, 18, 19 or 20. Preferred units according to formula (III) are PEG-8- maleate units, PEG-9-maleate units, PEG-10-maleate units, PEG-1 1 -maleate units, PEG-12- maleate units and mixtures thereof. A particularly preferred composition according to the invention contains a polymer which contains at least one structural unit of formula (III) in which n denotes the number 10.

Particularly preferred compositions according to the invention contain 0.01 to 5 wt.-% of at least one polymer, containing at least one structural unit of Formula (I), at least one structural unit of Formula (I la) and at least one structural unit of Formula (Ilia),

in which R² stands for a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, or an isopropyl group and x, y, z independently of one another stand for numbers from 1 to 200.

It is preferred to use polymers with a specific molecular weight since polymers with too low molecular weights do not opacify enough while polymers with too high molecular weights tend to have solubility problems and do not opacify fast enough. In the compositions accordings to the invention molecular weights above 5 kDa and below 120 kDa have shown the best effects.

Accordingly, particularly preferred compositions according to the invention contain a polymer which has a number average molecular weight of 10 to 100 kDa, preferably from 1 1 to 90 kDa, more preferably from 12 to 80 kDa, even more preferably from 13 to 70 kDa and particularly from 14 to 60 kDa.

In the compositions according to the invention, the polymers are used at levels from 0.01 to 5 wt.- %. Preferred compositions according to the invention comprise 0.02 to 4 wt.-%, preferably 0.03 to 3.5 wt.-%, more preferably 0.04 to 3.25 wt.-%, more preferably 0.05 to 3 wt.-%, more preferably 0.06 to 2.5 wt.-% and particularly 0.075 to 2 wt.-% polymer(s) containing at least one structural unit of Formula (I), at least one structural unit of Formula (II) and at least one structural unit of Formula (III).

As a second active the compositions according to the invention contain 0.01 to 5 wt.-% of at least one cationic surfactant.

The quaternary ammonium compounds (QACs) that are suitable as active biocidal substances have the general formula (R )(R²)(R³)(R⁴)N⁺X^~, in which R to R⁴ represent the same or different C-1-C22 alkyl residues, C₇-C₂8 aralkyl residues or heterocyclic residues, wherein two or, in the case of an aromatic bonding as in pyridine, even three residues form the heterocycle, for example a pyridinium or imidazolinium compound, together with the nitrogen atom, and X^" are halide ions, sulfate ions, hydroxide ions or similar anions.

QACs can be produced by reacting tertiary amines with alkylating agents, such as e.g. methyl chloride, benzyl chloride, dimethyl sulfate, dodecyl bromide, but also ethylene oxide. The alkylation of tertiary amines with a long alkyl residue and two methyl groups is achieved particularly readily, and even the quaternization of tertiary amines with two long residues and a methyl group can be carried out under mild conditions with the aid of methyl chloride. Amines having three long alkyl residues or hydroxy-substituted alkyl residues are of low reactivity and are preferably quaternized with dimethyl sulfate.

Suitable QACs are for example benzalkonium chloride (N-alkyl-N,N-dimethylbenzylammonium chloride, CAS No. 8001-54-5), benzalkon B (m,p-dichlorobenzyldimethyl-Ci₂-alkylammonium chloride, CAS No. 58390-78-6), benzoxonium chloride (benzyldodecylbis(2- hydroxyethyl)ammonium chloride), cetrimonium bromide (N-hexadecyl-N,N,N-trimethylammonium bromide, CAS No. 57-09-0), benzethonium chloride (N,N-dimethyl-N-[2-[2-[p-(1 , 1 ,3,3- tetramethylbutyl)phenoxy]ethoxy]ethyl]benzylammonium chloride, CAS No. 121-54-0), dialkyldimethylammonium chlorides such as di-n-decyldimethyl-ammonium chloride (CAS No. 7173-51-5-5), didecyldimethylammonium bromide (CAS No. 2390-68-3), dioctyldimethylammonium chloride, 1-cetylpyridinium chloride (CAS No. 123-03-5) and thiazoline iodide (CAS No. 15764-48- 1 ) and mixtures thereof. Particularly preferred QACs are dialkyldimethylammonium chlorides, in particular di-n-decyldimethylammonium chloride, N-octadecyl-N,N,N-trimethylammonium chloride, N-hexadecyl-N,N,N-trimethylammonium chloride and the benzalkonium chlorides with C₈-Ci₈ alkyl residues, in particular C₁₂-C₁₄ alkylbenzyldimethylammonium chloride. Another preferred biocidal compound is methyl-N-(2-hydroxyethyl)-N,N-di(caproyloxyethyl)ammonium methosulfate. Apart from the fact that these biocidal compounds act effectively against numerous microorganisms, the cationic compounds absorb particularly well on to cotton-containing fabrics and mixed fabrics.

The dialkyldimethylammonium halides, the benzalkonium halides and/or substituted benzalkonium halides are commercially available, for example as Barquat^® from Lonza, Marquat^® from Mason, Variquat^® from Evonik Industries and Hyamine^® from Lonza.

The cationic biocidal compound is used in a quantity of 0.1 wt.% to 20 wt.%, preferably 0.5 wt.% to 10 wt.% and particularly preferably 1 wt.% to 5 wt.%. It is particularly preferred from a toxicological and ecological viewpoint for the quantity of biocidal compound to be less than 3 wt.%.

In preferrd compositions the cationic surfactant is selected from

- N-Octadecyl-N,N,N-trimethylammoniumchloride,

- N-Hexadecyl-N,N,N-trimethylammoniumchloride,

- C₁₂-C₁₄-Alkylbenzyl-dimethylammoniumchloride

- Methyl-N-(2-hydroxyethyl)-N,N-di(caproyloxyethyl)ammonium-methosulfate,

- N-Alkyl-N,N-dimethyl-benzyl-ammoniumchloride, CAS No. 8001-54-5,

- m,p-Dichlorobenzyl-dimethyl-C12-alkylammoniumchloride, CAS No. 58390-78-6,

- Benzyl-dodecyl-bis-(2-hydroxyethyl)-ammonium-chloride,

- Benzyl-dodecyl-dimethyl-ammonium-chloride,

- N-Hexadecyl-N,N,N-trimethyl-ammoniumbromide, CAS No. 57-09-0,

- N,N-Dimethyl-N-[2-[2-[p-(1 ,1 ,3,3-tetramethylbutyl)-phenoxy]ethoxy]ethyl]-benzyl- ammoniumchloride, CAS No. 121 -54-0,

- Di-n-decyl-dimethyl-ammoniumchloride, CAS No. 7173-51-5-5,

- Didecyldimethylammoniumbromide, CAS No. 2390-68-3,

- Dioctyldimethylammoniumchloride,

- 1 -Cetylpyridiniumchloride, CAS No. 123-03-5,

- Thiazoliniodide, CAS No. 15764-48-1 , and

- mixtures thereof. For optimal performance, the cationic surfactant is present in the compositions of the invention at levels from 0.01 to 5 wt.-%. Preferred compositions comprise 0.05 to 4 wt.-%, preferably 0.1 to 3.5 wt.-%, more preferably 0.15 to 3 wt.-%, more preferably 0.25 to 2.5 wt.-%, more preferably 0.3 to 2 wt.-% and particularly 0.4 to 0.8 wt.-% cationic surfactant(s).

In addition to the copolymer and the cationic surfactant, a liquid textile or hard surface treatment agent may contain further ingredients that further improve the applications-engineering or aesthetic properties of the textile or hard surface treatment agent. In the context of the present invention, the liquid textile or hard surface treatment agent by preference additionally contains one or more substances from the group of nonionic surfactants, builder, enzymes, non-aqueous solvents, pH adjusting agents, fluorescing agents, dyes, hydrotropes, silicone oils, anti-redeposition agents, anti- gray agents, shrinkage preventers, wrinkle protection agents, dye transfer inhibitors, corrosion inhibitors, antistatic agents, bittering agents, ironing adjuvants, proofing and impregnation agents, swelling and anti-slip agents, softening compounds and UV absorbers.

The liquid textile or hard surface treatment agent may also contain a non-ionic surfactant as additional ingredient at a level up to 5 % by weight of the liquid textile or hard surface treatment agent. It is preferred that the liquid textile or hard surface treatment agent additionally comprises a non-ionic surfactant.

The nonionic surfactants that can be used are by preference alkoxylated, advantageously ethoxylated, in particular primary alcohols having by preference 8 to 18 carbon atoms and an average of 1 to 12 mol ethylene oxide (EO) per mol of alcohol, in which the alcohol residue can be linear or preferably methyl-branched in the 2-position, or can contain mixed linear and methyl- branched residues, such as those that are usually present in oxo alcohol residues. Particularly preferred, however, are alcohol ethoxylates having linear residues made up of alcohols of natural origin having 12 to 18 carbon atoms, e.g. from coconut, palm, tallow, or oleyl alcohol, and an average of 2 to 8 EO per mol of alcohol. The preferred ethoxylated alcohols include, for example, C-12-14 alcohols with 3 EO, 4 EO, 5 EO, or 7 EO, C_9-n alcohols with 7 EO, Ci₃_₁₅ alcohols with 3 EO, 5 EO, 7 EO, or 8 EO, C12-18 alcohols with 3 EO, 5 EO, or 7 EO, and mixtures thereof, such as mixtures of C12-14 alcohol with 3 EO and C12-18 alcohol with 7 EO. The degrees of ethoxylation indicated represent statistical averages, which can correspond to an integral or a fractional number for a specific product. Preferred alcohol ethoxylates exhibit a restricted distribution of homologs (narrow range ethoxylates, NRE). In addition to these non-ionic active detergent species, fatty alcohols with more than 12 EO can also be used. Examples of these are tallow fatty alcohol with 14 EO, 25 EO, 30 EO, or 40 EO. Nonionic active detergent species that contain EO and PO groups together in the molecule are also usable according to the present invention. Block copolymers having EO-PO block units or PO-EO block units, but also EO-PO-EO copolymers or PO-EO-PO copolymers, can be used in this context. Also usable, of course, are mixed alkoxylated nonionic active detergent species in which EO and PO units are distributed statistically rather than in block fashion. Such products are obtainable by the simultaneous action of ethylene oxide and propyle oxide on fatty alcohols. These non-ionic surfactants are obtainable, for example, under the commercial name Dehydol^® (from Cognis).

Particularly preferred compositions according to the invention contain 0.02 to 4 wt.-%, preferably 0.03 to 3.5 wt.-%, more preferably 0.04 to 3.25 wt.-%, more preferably 0.05 to 3 wt.-%, more preferably 0.06 to 2.5 wt.-% and particularly 0.075 to 2 wt.-% of a surfactant of the following general formula (IV):

R³-0-(AO)_m-H (IV),

wherein

R³ is linear or branched, saturated or unsaturated, substituted or un-substituted

hydrocarbon wherein the total number of carbon atoms is from 1 to 24;

AO is an ethylene oxide- (EO) or propylene oxide- (PO) group;

m is an integer from 1 to 50.

In formula (IV) R³ is a linear or branched, substituted or unsubstituted alkyl-, aryl- or alkylaryl group, preferably a linear, unsubstituted alkyl group, more preferably a fatty alcohol residue. Preferred residues R are chosen from decyl-, undecyl-, dodecyl-, tridecyl-, tetradecyl, pentadecyl-, hexadecyl-, heptadecyl-, octadecyl-, nonadecyl-, eicosyl residues und their mixtures, wherein the residues with an even number of carbon atoms are preferred. Particularly preferred residues R³ are derived from Ci₂-Ci₈-fatty alcohols, for example from coconut fatty alcohol, tallow fatty alcohol, lauryl-, myristyl-, cetyl- or stearyl alcohol or from Ci₀-C₂o-oxo alcohols.

AO is an ethylene oxide (EO) or propylene oxide (PO) group, preferably an ethylene oxide group. The index n is an integral number from 1 to 50, preferably from 1 to 20 und most preferably from 2 to 10. Particularly preferred, n is 2, 3, 4, 5, 6, 7 or 8.

Particularly preferred surfactants of formula (IV) are chosen from fatty alcohol ethoxylates of formula B-1

with k = 1 1 to 19, m = 2, 3, 4, 5, 6, 7 or 8. Most preferred representatives of this formula are C12-18 fatty alcohols with 7 EO (k = 1 1-17, m = 7 in formula B-1 ).

From the above mentioned further ingredients nonionic surfactants, enzymes, non-aqueous solvents, pH adjusting agents, fluorescing agents, dyes, silicone oils, soil-release polymers, anti- gray agents, dye transfer inhibitors are most preferred included into a textile or hard surface treatment agent.

Preferably, the textile or hard surface treatment agent additionally contains a perfume composition in order to impart a pleasant scent to the laundry treated therewith and to the textile or hard surface treatment agent itself. In a preferred embodiment, the textile or hard surface treatment agent contains a perfume composition in a quantity of usually up to 3 wt.%, preferably 0.1 to 2 wt.%, particularly 0.2 to 1 .5 wt.% and particularly preferably 0.5 to 1 wt.%.

The perfume composition can contain individual fragrance compounds, for example the synthetic products of the type of the esters, ethers, aldehydes, ketones, alcohols and hydrocarbons.

Preferably, however, mixtures of various fragrances are used which together produce an attractive scent. The perfume composition can also contain natural fragrance compounds as may be obtained from plant sources. The perfume composition of the textile or hard surface treatment agent can also contain at least one aromatherapy component such as an essential oil. In another preferred embodiment, the fabric washing liquid composition comprises an encapsulated perfume and a free perfume.

Preferred compositions according to the invention have a pH value from 5.0 to 6.0, preferably from 5.1 to 5.9, more preferably from 5.2 to 5.8 and particularly from 5.3 to 5.8.

The treatment agent according to the present invention can be used to clean hard surfaces or textile fabrics. For the purposes of the present invention, hard surfaces for example comprise surfaces of stone or ceramic materials, rigid plastics materials, glass, porcelain or metal. Hard surfaces may be, for example, tableware, walls, tiles, work surfaces, painted surfaces, flooring or sanitary articles.

The textile or hard surface treatment agent is manufactured using usual and known methods and processes. For example, the constituents of the textile or hard surface treatment agent can be simply mixed in agitator vessels, the water, non-aqueous solvent, and surfactants usefully being prepared first. After cooling under stirring, if necessary at all, the further constituents are then added in portions.

Yet another object of the present invention is the use of a polymer, containing at least one structural unit of Formula (I), at least one structural unit of Formula (II) and at least one structural unit of Formula (III),

in which

R stands for a hydrogen atom or a methyl group

R² stands for a hydrogen atom, a methyl group, an ethyl group, a n-propyl group, or an isopropyl group,

n stands for a number selected from 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1 , 12, 13,

14, 15, 16, 17, 18, 19 or 20,

x, y, z independently of one another stand for numbers from 1 to 200, for opacifying water-based compositions containing cationic surfactant(s).

As mentioned above, its is preferred, that the use according to the invention is used for opacifying har surface cleaners. So, yet another preferred object of the present invention is the use of a polymer, containing at least one structural unit of Formula (I), at least one structural unit of Formula (II) and at least one structural unit of Formula (III),

R stands for a hydrogen atom or a methyl group

R² stands for a hydrogen atom, a methyl group, an ethyl group, a n-propyl group, or an isopropyl group,

n stands for a number selected from 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1 , 12, 13,

14, 15, 16, 17, 18, 19 or 20,

x, y, z independently of one another stand for numbers from 1 to 200, for opacifying water-based hard surface treatment compositions containing cationic surfactant(s).

For preferred uses the preferred embodiments for the liquid compositions apply mutatis mutandis.

Claims

Claims

A liquid textile or hard surface treatment composition, comprising by weight of the total composition

(a) 0.01 to 5 wt.-% of at least one polymer, containing at least one structural unit of Formula (I), at least one structural unit of Formula (II) and at least one structural unit of Formula (III),

in which

R stands for a hydrogen atom or a methyl group

R² stands for a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, or an isopropyl group,

n stands for a number selected from 1 ,

2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1 , 12, 13,

14, 15, 16, 17, 18, 19 or 20,

x, y, z independently of one another stand for numbers from 1 to 200,

(b) 0.01 to 5 wt.-% of at least one cationic surfactant,

(c) water.

A composition according to claim 1 , wherein the polymer contains at least one structural unit of formula (Ma)

in which R stands for a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, or an isopropyl group.

3. A composition according to claim 1 , 2 or 3, wherein the polymer contains at least one

structural unit of formula (III) in which n denotes the number 10.

4. A composition according to claim 1 , 2, 3 or 4, wherein the polymer has a number average molecular weight of 10 to 100 kDa, preferably from 1 1 to 90 kDa, more preferably from 12 to 80 kDa, even more preferably from 13 to 70 kDa and particularly from 14 to 60 kDa.

5. A composition according to claim 1 , 2, 3, 4 or 5, wherein the composition comprises 0.02 to 4 wt.-%, preferably 0.03 to 3.5 wt.-%, more preferably 0.04 to 3.25 wt.-%, more preferably 0.05 to 3 wt.-%, more preferably 0.06 to 2.5 wt.-% and particularly 0.075 to 2 wt.-% polymer(s) containing at least one structural unit of Formula (I), at least one structural unit of Formula (II) and at least one structural unit of Formula (III).

6. A composition according to claim 1 , 2, 3, 4 or 5, wherein the cationic surfactant is selected from

- N-Octadecyl-N,N,N-trimethylammoniumchloride,

- N-Hexadecyl-N,N,N-trimethylammoniumchloride,

- Ci2-Ci4-Alkylbenzyl-dimethylammoniumchloride

- Methyl-N-(2-hydroxyethyl)-N,N-di(caproyloxyethyl)ammonium-methosulfate,

- N-Alkyl-N,N-dimethyl-benzyl-ammoniumchloride, CAS No. 8001-54-5,

- m,p-Dichlorobenzyl-dimethyl-C12-alkylammoniumchloride, CAS No. 58390-78-6,

- Benzyl-dodecyl-bis-(2-hydroxyethyl)-ammonium-chloride,

- Benzyl-dodecyl-dimethyl-ammonium-chloride,

- N-Hexadecyl-N,N,N-trimethyl-ammoniumbromide, CAS No. 57-09-0,

- N,N-Dimethyl-N-[2-[2-[p-(1 ,1 ,3,3-tetramethylbutyl)-phenoxy]ethoxy]ethyl]-benzyl- ammoniumchloride, CAS No. 121 -54-0,

- Di-n-decyl-dimethyl-ammoniumchloride, CAS No. 7173-51-5-5,

- Didecyldimethylammoniumbromide, CAS No. 2390-68-3,

- Dioctyldimethylammoniumchloride,

- 1 -Cetylpyridiniumchloride, CAS No. 123-03-5,

- Thiazoliniodide, CAS No. 15764-48-1 , and

- mixtures thereof.

7. A composition according to claim 1 , 2, 3, 4, 5 or 6, wherein the composition comprises 0.05 to 4 wt.-%, preferably 0.1 to 3.5 wt.-%, more preferably 0.15 to 3 wt.-%, more preferably 0.25 to 2.5 wt.-%, more preferably 0.3 to 2 wt.-% and particularly 0.4 to 0.8 wt.-% cationic surfactant(s).

8. A composition according to claim 1 , 2, 3, 4, 5, 6 or 7, wherein the composition contains 0.02 to 4 wt.-%, preferably 0.03 to 3.5 wt.-%, more preferably 0.04 to 3.25 wt.-%, more preferably 0.05 to 3 wt.-%, more preferably 0.06 to 2.5 wt.-% and particularly 0.075 to 2 wt.-% of a surfactant of the following general formula (IV):

R³-0-(AO)_m-H (IV),

wherein

R³ is linear or branched, saturated or unsaturated, substituted or un-substituted

hydrocarbon wherein the total number of carbon atoms is from 1 to 24;

AO is an ethylene oxide- (EO) or propylene oxide- (PO) group;

m is an integer from 1 to 50. A composition according to claim 1 , 2, 3, 4, 5, 6, 7 or 8, wherein the composition has a pH value from 5.0 to 6.0, preferably from 5.1 to 5.

9, more preferably from 5.2 to 5.8 and particularly from 5.3 to 5.8.

10. Use of a polymer, containing at least one structural unit of Formula (I), at least one structural unit of Formula (II) and at least one structural unit of Formula (III),

in which

R stands for a hydrogen atom or a methyl group

R stands for a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, or an isopropyl group,

n stands for a number selected from 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1 , 12, 13,

14, 15, 16, 17, 18, 19 or 20,

x, y, z independently of one another stand for numbers from 1 to 200, for opacifying water-based compositions containing cationic surfactant(s).