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US 5,445,755 AGranted
Detergent compositions containing a peroxidase/accelerator system without linear alkylbenzenesulfonate
AssigneeThe Procter & Gamble Company
InventorsAndre C. Convents, Alfred Busch, Isabelle M. C. De Groote, Don K. K. Liu
Life of this patent
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Abstract
Dye transfer inhibiting systems are disclosed, comprising an enzyme exhibiting peroxidase activity, a hydrogen peroxide source, an additional oxidizable substrate, and an accelerator preferably having the formula ##STR1## Detergent compositions free of linear alkylbenzenesulfonate containing the dye transfer inhibition system and typical detergent ingredients are also disclosed. More effective and efficient dye transfer inhibition of fugitive dyes is achieved by using the dye transfer inhibition system as a detergent additive or in a detergent composition matrix free of linear alkylbenzenesulfonate.
Claims6
A detergent composition for use in a wash liquid, comprising:
- a) an enzyme exhibiting peroxidase activity in an amount sufficient to yield 0.01-100 mg of enzyme per liter of wash liquid;
- b) a hydrogen peroxide source selected from the group consisting of a hydrogen peroxide, hydrogen peroxide precursor, and an enzymatic system capable of generating hydrogen peroxide, wherein said hydrogen peroxide source is present in an amount sufficient to produce hydrogen peroxide in an amount of from about 0.001-5 mM;
- c) an accelerator for accelerating said peroxidase activity of said enzyme wherein said accelerator is present in an amount from about 0.1 uM to about 500 uM and wherein said accelerator consists of a phenothiazine or a phenoxazine having the formula ##STR14## wherein X is S or O, and R is --CH.sub.3, --CH.sub.2 CH.sub.3, --CH.sub.2 CH.sub.2 CH.sub.2 NH.sub.2 or --CH.sub.2 CH.sub.2 COOH;
- and
- d) from about 1 to 95 % by weight of the detergent composition of a surfactant system wherein said surfactant is selected from the group consisting of anionic, cationic, nonionic, ampholytic, zwitterionic, semi-polar agents or mixtures thereof and wherein said surfactant system is free of linear alkylbenzenesulfonate.
2 more elements
A process for inhibiting the transfer of a textile dye, comprising the steps of:
- washing or rinsing a fabric dyed with a textile dye together with a second fabric in the wash liquid, wherein the wash liquid comprises a detergent composition comprising:
- a) an enzyme exhibiting peroxidase activity in an amount sufficient to yield 0.01-100 mg of enzyme per liter of wash liquid;
- b) a hydrogen peroxide source selected from the group consisting of a hydrogen peroxide, hydrogen peroxide precursor, and an enzymatic system capable of generating hydrogen peroxide, wherein said hydrogen peroxide source is present in an amount sufficient to produce hydrogen peroxide in an amount of from about 0.001 -5 mM:
- c) an accelerator for accelerating said peroxidase activity of said enzyme wherein said accelerator is present in an amount from about 0, 1 uM to about 500 uM and wherein said accelerator consists of a phenothiazine or a phenoxazine having the formula ##STR15## wherein X is S or O, and R is --CH.sub.3, --CH.sub.2 CH.sub.3, --CH.sub.2 CH.sub.2 CH.sub.2 NH.sub.2 or --CH.sub.2 CH.sub.2 COOH;
- and
- d) from about 1 to 95% by weight of the detergent composition of a surfactant system wherein said surfactant is selected from the group consisting of anionic, cationic, nonionic, ampholyitic, zwitterionic, semi-polar agents or mixtures thereof and wherein said surfactant system is free of linear alkylbenzenesulfonate;
- and
- contacting thereby any free textile dye contained in said wash liquid with said detergent composition so as to inhibit the transfer of said textile dye to said second fabric.
5 more elements
A process for bleaching a textile dye contained in a solution or dispersion, comprising the step of:
- contacting said dye contained in the solution or dispersion with a detergent composition comprising;
- a) an enzyme exhibiting peroxidase activity in an amount sufficient to yield 0.01-100 mg of enzyme per liter of washing liquid;
- b) a hydrogen peroxide source selected from the group consisting of a hydrogen peroxide, hydrogen peroxide precursor, and an enzymatic system capable of generating hydrogen peroxide, wherein said hydrogen peroxide source is present in an amount sufficient to produce hydrogen peroxide in an amount of from about 0.001-5 mM;
- c) an accelerator for accelerating said peroxidase activity of said enzyme wherein said accelerator is present in an amount from about 0.1 uM to about 500 uM and wherein said accelerator consist of a phenothiazine or a phenoxazine having the formula ##STR16## wherein X is S or O, and R is --CH.sub.3, --CH.sub.2 CH.sub.3 --CH.sub.2 CH.sub.2 CH.sub.2 NH.sub.2 or --CH.sub.2 CH.sub.2 COOH;
- and
- d) from about 1 to 95% by weight of the detergent composition of a surfactant system wherein said surfactant is selected from the group consisting of anionic, cationic, nonionic, ampholytic, zwitterionic, semi-polar agents or mixtures thereof and wherein said surfactant system is free of linear alkylbenzenesulfonate.
3 more elements
Dependencies are inferred from the claim text.