Patent ID: 6897194

Claim:
A fabric softening composition comprising an aqueous dispersion of: (a) from 4 to 25% by weight of a quaternary ammonium fabric softening material represented by the formula: wherein each R 1 group is independently selected from C 1-4 alkyl, hydroxy alkyl or C 2-4 alkenyl groups; and wherein each R 2 group is independently selected from C 8-28 saturated alkyl groups; T is X − is any suitable anion including halide, acetate and lower alkosulphate ions and n is 0 or an integer from 1-5; and (b) an unsaturated C 8 -C 24 fatty acid as a viscosity stabiliser, wherein the cis:trans isomer weight ratio in the unsaturated fatty acid is from 20:80 to 150:1, and wherein the weight ratio of said quaternary ammonium material to said unsaturated fatty acid is greater than 12:1.