Patent ID: 7951763

Claim:
A method of preparing a detergent composition (formulation) for personal care, which comprises incorporating into said composition an aqueous solution of a cationic copolymer said solution containing less than 20 ppm residual monomer, wherein the cationic copolymer is formed from 20 to 30% by weight of cationic monomer and from 70 to 80% by weight of nonionic monomer selected from the group consisting of unsaturated N-substituted amides, (meth)acrylates having mono- or multi-hydroxy functional group(s) and acrylamide and derivatives thereof, wherein said cationic copolymer has an average molecular weight in the range 30,000 to 300,000 and the aqueous solution has a concentration of 20 to 50% by weight copolymer and a viscosity of from 1000 to 10,000 cP at 25° C.