Silicone-modified comb polymers based on acryloyldimethyltaurine acid (2-acrylamido-2-methyl-1-propanesulfonic acid)
The invention provides water-soluble or water-swellable copolymers obtained by free-radical copolymerization of A) acryloyldimethyltaurine and/or acryloyldimethyltaurates, B) optionally, one or more olefinically unsaturated, optionally crosslinking comonomers containing at least one oxygen, nitrogen, sulfur or phosphorus atom and possessing a molecular weight of less than 500 g/mol, C) one or more at least monofunctional, silicon-containing components capable of free-radical polymerization, the copolymerization D) taking place in the presence of at least one polymeric additive having number-average molecular weights of from 200 g/mol to 10 9 g/mol. The water-soluble or water-swellable copolymers of the present invention are useful in paper processing, laundry detergents, textile processing, petroleum extraction and formulating cosmetics.
1. A water-soluble or water-swellable copolymer obtained by free-radical copolymerization of
A) acryloyldimethyltaurine or acryloyldimethyltaurates, or mixtures thereof,
B) optionally, one or more olefinically unsaturated, comonomer containing at least one oxygen, nitrogen, sulfur or phosphorus atom and possessing a molecular weight of less than 500 g/mol,
C) one or more at least monofunctional, silicon-containing component capable of free-radical polymerization, at least one silicon-containing component being a compound selected from the group consisting of
where f=2 to 500
where f=2 to 500
where f=2 to 500, and mixtures thereof, the copolymerization
D) optionally taking place in the presence of at least one polymeric additive having number-average molecular weights of from 200 g/mol to 10 9 g/mol.
2. The water-soluble or water-swellable copolymer of claim 1 , wherein the copolymer is crosslinked.
3. The water-soluble or water-swellable copolymer of claim 1 , wherein the copolyrner is copolymerized by precipitation polymerization in tert-butanol.
4. A water-soluble or water-swellable copolymer obtained by free-radical copolymerization of acryloyldimethyltaurine or acryloyldimethyltaurates, and mixtures thereof and one or more at least monofunctional, sllicon-containing component capable of free-radical polymerization, at least one silicon-containing component being a compound selected from the group consisting of
where f=2 to 500,
where f=2 to 500,
where f=2 to 500, and mixtures thereof.
5. The water-soluble or water-swellable copolymer of claim 1 , wherein component A is present in an amount from 20 to 99.5 weight percent based on said copolymer.
6. The water-soluble or water-swellable copolymer of claim 1 , wherein the acryloyldimethyltaurine or acryloyldimethyltaurates, and mixtures thereof is present in an amount from 50 to 99.5 weight percent based on said copolymer.