Copolymers comprising polyalkylene oxide groups and quaternary nitrogen atoms

By using copolymers with high weight average molecular weight, combined with monoethylenically unsaturated polyoxyalkylene, quaternized nitrogen-containing and non-ionic monomers, the problems of existing detergents in removing clay soil and preventing soil redeposition are solved and achieved Better textile protection and cleaning results.

CN108884197AInactive Publication Date: 2018-11-23BASF SE
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Patent Information

Application Number
CN201780021679.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2016-04-08
Filing Date
2017-03-31
Publication Date
2018-11-23
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing detergents are not effective at removing clay dirt from textiles, and it is difficult to prevent dirt from redepositing, causing the textiles to turn gray and affecting their protective effect.

Method used

A copolymer with a weight average molecular weight greater than 100,000 is used, containing 60-99% of monoethylenically unsaturated polyoxyalkylene monomers, 1-40% of quaternized nitrogen-containing monoolefin monomers, and 0-10% of anionic monoolefin monomers. monomers and 0-30% of non-ionic monoolefin monomers prepared by free radical polymerization and used in automatic warewashing, manual warewashing and hard surface cleaners.

Benefits of technology

Significantly improves the primary and secondary detergency of textiles, prevents dirt from redepositing, protects textiles from graying, and is suitable for cleaning cotton products and other surfaces.

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Abstract

A copolymer which comprises, in copolymerized form, (A) 60 to 99% by weight of at least one monoethylenically unsaturated polyalkylene oxide monomer of the formula I (I) in which the variables have the following meanings: X is -CH2- or -CO-, if Y is -O-; is -CO-, if Y is -NH-; Y is -O- or -NH-; R1 is hydrogen or methyl; R2 are identical or different C2 -C6-alkylene radicals, which may be arrangedblockwise or randomly; R3 is hydrogen or C1-C4-alkyl; n is an integer from 25 to 75, (B) 1 to 40% by weight of at least one quaternized nitrogen-containing monoethylenically unsaturated monomer selected from the group consisting of monomers of formula IIa to IId (IIa - IId) in which the variables have the following meanings: R is C1-C4-alkyl or benzyl; R' is hydrogen or methyl; Y is -O- or -NH-; Ais C1-C6-alkylene; X- is halide, C1-C4-alkyl sulfate, C1-C4-alkylsulfonate and C1-C4-alkyl carbonate, (C) 0 to 10% by weight of anionic monoethylenically unsaturated monomers, and (D) 0 to 30% by weight of other nonionic monoethylenically unsaturatedmonomers and has an average molecular weight Mw of > 100,000.
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