Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Specific organic component
Patent
1999-05-05
2000-12-26
Gupta, Yogendra
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Specific organic component
510303, C11D 1000
Patent
active
06165969&
DESCRIPTION:
BRIEF SUMMARY
The invention relates to the use of polymers which comprise at least 5 mol % of quaternized, unsubstituted or substituted vinylimidazole units, as color-fixing and color transfer-inhibiting additive to laundry aftertreatment aids and to detergents.
When colored textiles are washed, the dye is partly removed from the colored textiles and transferred from the wash liquor to other fabrics. If, for example, white laundry is washed together with colored textiles, the white laundry is stained. Color detergents which comprise polymeric color transfer inhibitors were developed to prevent transfer of the removed textile dye from the wash liquor to the laundry. These inhibitors are, for example, homo- and copolymers of vinylpyrrolidone and vinylimidazole, cf. DE-B-22 32 353 and DE-A-28 14 287.
WO-A-94/10281 discloses the use of copolymers of the free bases, of the salts or in quaternized form process.
Polymers of alkyl-1-vinylimidazoles and processes for preparing them by free-radical polymerization of alkyl-1-vinylimidazoles, in the presence or absence of other monomers, in water or C.sub.1 -C.sub.4 -alcohols are disclosed in WO-A-95/15345. The polymers obtainable in this way are used as additive to detergents to inhibit dye transfer during the washing process.
EP-A-0 462 806 discloses the use of cationic dye fixatives in laundry aftertreatment baths together with fabric softeners. The aftertreatment of the laundry takes place in the washing machines normally used in the household at below 40.degree. C. The dye fixatives can, according to the statements in the application, also be employed in nonionic detergents. The cationic fixatives retard removal of the dye from the colored textiles during the treatment process.
It is an object of the present invention to provide other compositions for suppressing dye removal and dye transfer to other textiles during washing and during the aftertreatment of colored textiles.
We have found that this object is achieved by the use of polymers which comprise at least 5 mol % of quaternized 1-vinylimidazole units of the formula ##STR2## where R is C.sub.1 -C.sub.25 -alkyl, C.sub.5 -C.sub.10 -cycloalkyl or benzyl C.sub.2 H.sub.5, and aftertreatment aids and to detergents.
The polymers to be used according to the invention usually comprise at least 10 mol % of quaternized 1-vinylimidazole units of the formula I and have a molecular weight of from 5000 to 1 million. The polymers preferably employed comprise from 20 to 100 mol % of quaternized 1-vinylimidazole units of the formula I and have a molecular weight of from 10000 to 500000 (determined by light scattering).
The polymers to be employed according to the invention can be obtained by free-radical polymerization of quaternary 1-vinylimidazoles of the formula II ##STR3## where R is C.sub.1 -C.sub.25 -alkyl, C.sub.5 -C.sub.10 -cycloalkyl or benzyl, R.sup.1,R.sup.2,R.sup.3 are identical or different and are H, CH.sub.3 and C.sub.2 H.sub.5, and OSO.sub.3 -- or C.sub.2 H.sub.5 0SO.sub.3 --
Examples of such monomers are
The polymers to be used according to the invention can also be obtained by quaternizing polymers which comprise 1-vinylimidazole units of the formula ##STR4## where R.sup.1, R.sup.2, R.sup.3 are identical or different and are H, CH.sub.3 and C.sub.2 H.sub.5, with C.sub.1 -C.sub.25 -alkylating agents. Polymers of this type are described, for example, in WO-A-94/10281 and WO-A-94/14861.
Examples of suitable quaternizing agents are alkyl halides such as the preferably used C.sub.1 -C.sub.25 -alkyl chlorides or alkyl bromides, C.sub.5 -C.sub.10 -cycloalkyl halides or benzyl chloride or benzyl bromide. Examples of suitable alkylating agents are methyl chloride, ethyl chloride, methyl bromide, ethyl bromide, propyl chloride, n-propyl bromide, isopropyl chloride, butyl chloride, hexyl chloride, cyclohexyl chloride, octyl chloride, dodecyl chloride and stearyl chloride. C.sub.1 -C.sub.12 -Alkyl chlorides or alkyl bromides, and benzyl chloride or benzyl bromide, are preferably used as quaternizing agents.
Further suitable alkylati
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Bockh Dieter
Detering Jurgen
Jager Hans-Ulrich
Lux Jurgen Alfred
Schade Christian
BASF - Aktiengesellschaft
Gupta Yogendra
Ingersoll Christine
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