Fabric conditioning compostions
AssigneeUnilever Home & Personal Care USA, Division of Conopco, Inc.
InventorsShimei Fan, Gary Cahill
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Abstract
In a concentrated fabric softening composition comprising an aqueous dispersion of less than 30% by weight of quaternary ammonium fabric softening material which comprises two C12-C22 alkyl or alkenyl groups connected to the molecule via at least one ester link, such as ester quat, improved stability of the viscosity on storage is obtained by including an unsaturated C8-C24 fatty acid, wherein the weight ratio of quaternary ammonium material to unsaturated material is greater than 10:1.
Claims7
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;
- 4
- wherein each R1 group is independently selected from C1-4 alkyl, hydroxy alkyl or C2-4 alkenyl groups;
- and wherein each R2 group is independently selected from C8-28 alkyl or alkenyl groups;
- T is
- 5
- 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 C8-C24 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 the weight ratio of quaternary ammonium material to unsaturated fatty acid is greater than 10:1.
A fabric softening composition according to any preceding claim, further comprising at least one salt of a multivalent inorganic anion or non-sequestering multivalent organic anion.
Dependencies are inferred from the claim text.