Patent ID: 7659354

Claim:
A polymeric compound formed from a mixture of monomeric components consisting of: (I) 20 to 99.9% by weight of at least one cationic monomer according to formula (1) where R 1 and R 2 are, independently of one another, hydrogen or C 1 -C 4 alkyl; R 3 and R 4 are, independently of one another, hydrogen, or an alkyl, hydroxyalkyl, carboxyalkyl, carboxyamidealkyl or alkoxyalkyl group having from 1 to 18 carbon atoms; and Y − represents an anion; (II) 0.1 to 80% by weight of at least one hydrophobic unsaturated nonionic monomer that polymerizes in the presence of an initiator selected from the group consisting of styrene, esters of (meth)acrylic acid, (meth)acrylonitrile, esters of unsaturated polyfunctional acids and vinyl esters of C 2 to C 18 carboxylic acids; (III) 0 to 60% by weight of a water-soluble monomer different from monomer (I) and monomer (II) selected from the group consisting of vinyl amine, vinyl alcohol, vinyl derivatives of dimethyl siloxane, aminosiloxanes, hydroxyalkyl acrylates, (meth)acrylic acid and (meth)acrylic acid salts; and (IV) 0 to 10% by weight a crosslinking agent.