Stable bleaching compositions
AssigneeThe Clorox Company
InventorsChung-Lu Hsieh, Stephen B. Kong, Dale S. Steichen, Harold R. Wheeler
Life of this patent
Estimating the term…
Abstract
This invention provides stable peroxyacid bleaching compositions comprising: (a) a surface active peroxyacid, and (b) at least one surfactant which forms a mixed micelle in aqueous solution with said peroxyacid; wherein said aqueous solution contains a detergent concentration of about 0.1 to 3.0 grams/liter. Buffers and other typical cleaning adjuncts known to those skilled in the art may be included. The invention also provides a method of stabilizing the decomposition rate of surface active peroxyacids.
Claims25
A substantially nonaqueous stable peroxyacid bleach composition comprising:
- (a) an amount of a surface active peroxyacid sufficient to produce 1-100 ppm A.O. in aqueous solution, which tends to undergo extremely rapid solution decomposition in aqueous solution;
- and
- (b) an amount of at least one surfactant sufficient to produce 1-10,000 ppm surfactant in aqueous solution in order to form a mixed micelle with the peroxyacid;
- wherein said aqueous solution contains a commercial laundry detergent in a concentration of about 0.1 to 3.0 grams/liter.
A substantially nonaqueous stable peroxyacid bleach composition comprising:
- (a) an amount of a surface active peroxyacid having a carbon chain of from about 6 to 20 carbon atoms sufficient to produce 1-100 ppm A.O. in aqueous solution, said peroxyacid tending to undergo extremely rapid solution decomposition in aqueous solution;
- (b) an amount of at least one surfactant sufficient to produce 1-10,000 ppm surfactant in aqueous solution, said surfactant forming a mixed micelle aqueous solution with said peroxyacid, said mixed micelle resulting in decreased peroxyacid decomposition rates and increased peroxyacid half-life;
- and
- (c) a buffer to keep the composition within the range of pH 7-12 when in aqueous solution with detergent;
- wherein said aqueous solution contains a commercial laundry detergent concentration of about 0.1 to 3.0 grams/liter.
A method for stablizing the solution decomposition rate of substantially nonaqueous peroxyacids comprising:
- (a) combining an amount of a surface active peroxyacid sufficient to produce 1-100 ppm A.O. in aqueous solution, said peroxyacid tending to undergo extremely rapid solution decomposition in aqueous solution, with an amount of at least one surfactant sufficient to produce 1-10,000 ppm surfactant in aqueous solution;
- and
- (b) forming a mixed micelle therebetween in aqueous solution, said mixed micelle causing decreased peroxyacid decomposition rates and increased peroxyacid half-life, said peroxyacid and said surfactant of the combination in (a) being substantially nonaqueous;
- wherein said aqueous solution contains a commercial laundry detergent concentration of about 0.1 to 3.0 grams/liter.
A method for bleaching soiled fabrics comprising:
- treating a soiled fabric with a substantially nonaqueous composition which comprises:
- (a) an amount of a surface active peroxyacid sufficient to produce 1-100 ppm A.O. in aqueous solution, said peroxyacid tending to undergo extremely rapid solution decomposition in aqueous solution;
- (b) an amount of at least one surfactant sufficient to produce 1-10,000 ppm A.O. in aqueous solution, said surfactant forming a mixed micelle in aqueous solution with said peroxyacid, said mixed micelle causing decreased decomposition rates and increased peroxyacid half-life said (a) and said (b) of said composition being substantially nonaqueous;
- and
- removing the soil from said soiled fabric;
- wherein said aqueous solution contains a commercial laundry detergent concentration of about 0.1 to 3.0 grams/liter.
Dependencies are inferred from the claim text.