Bleach compositions comprising protease enzyme
AssigneeThe Procter & Gamble Company
InventorsChanchal Kumar Ghosh, Gayle Marie Frankenbach, Catherine Michelle Quinn
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Abstract
Bleaching and cleaning compositions comprising a bleaching compound, one or more bleach activators, and protease enzymes are provided. Thus, laundry detergent compositions which comprise protease, perborate or percarbonate and activators such as benzoyl caprolactain exhibit improved dingy clean-up performance.
Claims5
A bleaching composition which provides dingy clean up, comprising
- a) at least about 0.001% by weight of a protease enzyme selected from the group consisting of a protease enzyme having N76D/S103A/V104I subtilisin variant derived from Bacillus lentus subtilisin, a protease enzyme having K27R/V104I/N123S/
- T274A subtilisin variant derived from Bacillus lentus subtilisin and mixtures thereof;
- b) from about 1% to about 75% by weight of a bleaching compound capable of yielding hydrogen peroxide in a liquid;
- and
- c) from about 0.1% to about 50% by weight of one or more bleach activators selected from the group consisting of:
- i) alkanoyloxybenzenesulfonate bleach activators;
- ii) an amido-derived bleach activator of the general formula:
- ##STR8## or mixtures thereof, wherein R.sub.1 is an alkyl, aryl or alkaryl group containing from about 1 to about 14 carbon atoms, R.sup.2 is an alkylene, arylene, or alkyarylene group containing from about 1 to about 14 carbon atoms, R.sup.5 is H or an alkyl, aryl or alkaryl group containing from about 1 to about 10 carbon atoms, and L is a leaving group;
- iii) N-acyl lactam bleach activators of the formula:
- ##STR9## wherein n is from 0 to about 8 and R.sup.6 is H, an alkyl, alkoxyaryl or alkaryl group containing from 1 to 12 carbon atoms, or a substituted phenyl group containing from about 6 to about 18 carbon atoms;
- iv) mixtures of i), ii) and iii);
- and.
A bleaching composition which provides dingy clean up, comprising at least about 0.001% to about 5% by weight of a proteases enzyme selected from the group consisting of a protease enzyme having N76D/S103A/V104I subtilisin variant derived from Bacillus lentus subtilisin, a protease enzyme having K27R/V104I/N123S/T274A subtilisin variant derived from Bacillus lentus subtilisin and mixtures thereof, from about 1% to about 75% by weight of a bleaching compound capable of yielding hydrogen peroxide in a aqueous liquor and selected from the group consisting of perborates, percarbonates and mixtures thereof, and from about 0.1% to about 50% by weight one or more bleach activators selected from the group consisting of acyl caprolactams, acyl valerolactams, (6-octanamidocaproyl)oxybenzenesulfonate, (6-nonanamidocaproyl)oxybenzenesulfonate, (6-decanamidcaproyl)oxybenzene sulfonate and mixtures thereof.
Dependencies are inferred from the claim text.