Patent ID: 6117960
Filing Date: 2000-09-12
Classification: C08F,C08J,D06M,D21H

Abstract:
Water-soluble, crosslinkable copolymers having a weight average molecular weight of .ltoreq.500,000, comprising:a) 20 to 95% by weight of residues of at least one monomer unit selected from the group consisting of monomer units containing sulphonate groups,b) 4 to 80% by weight of residues of at least one monomer unit selected from the group consisting of monomer units containing N-methylol groups and monomer units containing N-alkoxymethyl groups andc) 0.1 to 20% by weight of residues of at least one hydrophobic monomer unit selected from the group consisting of water-insoluble, ethylenically unsaturated compounds, hydrophobic end groups of initiator radicals and hydrophobic end groups of regulator molecules,the contents in % by weight being based on the total weight of the copolymer, and wherein up to 50% by weight, based on the weight content of the residues of monomer units a) containing sulphonic acid/sulphonate groups can be replaced by residues of at least one member selected from the group consisting of monomer units d) containing carboxyl groups and monomer units e) containing amide groups.