초록 ▼

The present invention provides hair dye compositions containing a certain rheology modifying system. The hair dye compositions have improved thickening and shear thinning properties. The present invention also provides a method of thickening a hair dye composition using the rheology modifying system

The present invention provides hair dye compositions containing a certain rheology modifying system. The hair dye compositions have improved thickening and shear thinning properties. The present invention also provides a method of thickening a hair dye composition using the rheology modifying system.

대표청구항 ▼

[ I claim:] [1.] A hair dye composition, comprising:a) one or more hair dyeing agents;b) from 0.2 to 5 weight percent of at least three polyethoxylated urethanes, based on the total weight of the hair dye composition;c) from 1.0 to 25 weight percent, based on the total weight of the hair dye composi

[ I claim:] [1.] A hair dye composition, comprising:a) one or more hair dyeing agents;b) from 0.2 to 5 weight percent of at least three polyethoxylated urethanes, based on the total weight of the hair dye composition;c) from 1.0 to 25 weight percent, based on the total weight of the hair dye composition, of at least one nonionic associative agent containing at least one hydrophilic group and at least one hydrophobic group which interacts with the polyethoxylated urethanes to provide thickening properties; andd) water;wherein the polyethoxylated urethanes are a mixture of polyethoxylated urethanes comprising a first polyethoxylated urethane with at least two end groups, where each end group comprises a terminal isocyanate and a polyether; a second polyethoxylated urethane with at least two end groups, where each end group comprises a terminal isocyanate group and a non-functional group; and a third polyethoxylated urethane with at least two end groups, where one end group comprises a terminal isocyanate and a polyether and one other end group comprises a terminal isocyanate and a non-functional group; and wherein the viscosity of the hair dye composition at a shear rate of 0.3 rpm or less is at least 6000 centipoise, and the viscosity of the hair dye composition at a shear rate of greater than or equal to 30 rpm is less than or equal to 6000 centipoise.