US 2010/0137536 A1 · ANIONIC WATER-SOLUBLE ADDITIVES

Abstract

The invention relates to anionically modified copolymers that can be produced by the polymerization of monomers (A), (B) and (C) to obtain non-ionic polymers with reactive terminal OH groups and by the subsequent reaction of the terminal OH groups to form anionic end groups. According to the invention, (A) is a monomer of formula (I), in which A represents C2-C4 alkene and B represents a C2-C4 alkene that is different from A, R represents hydrogen or methyl, m is a number between 1 and 500, n is a number between 1 and 500, (B) is an ethylenically unsaturated monomer containing an aromatic group and (C) is a ethylenically unsaturated monomer.

Claims17

Dependent claims

Anionically modified copolymers obtained by polymerization of monomers (A), (B) and (C) to yield nonionic copolymers having reactive terminal OH groups, and subsequent conversion of the terminal OH groups to anionic end groups, wherein

(A) is a monomer of formula (I)
wherein
A is C2-C4-alkylene,
B is a C2-C4-alkylene other than A,
R is hydrogen or methyl,
m is from 1 to 500;
n is from 1 to 500,
and the sum total of m+n is from 2 to 1000;
(B) is an ethylenically unsaturated monomer containing an aromatic group;
and
(C) is an ethylenically unsaturated monomer containing an alkyl radical.

8 more elements

Dependencies are inferred from the claim text.

Anionic water-soluble additives

Life of this patent

Anionic water-soluble additives

Life of this patent

Abstract

Claims17