Methods and compositions for bleaching a dye in solution
AssigneeNovozymes A/S
InventorsPalle Schneider, Heinz-Josef Deussen
Life of this patent
Estimating the term…
Abstract
The present invention provides methods and compositions for bleaching a dye in solution comprising contacting, in an aqueous solution, the dye with a composition comprising a laccase and an enhancing agent of the formula: in which A is: and B is H, or C1-C4 unbranched alkyl wherein said alkyl may contain ether groups, and one, two, three, four of R2, R3, R4, R5 and R6 are H, NH2, COOH, SO3H, CN, CH3, COCH3, NO2, OCH3, NR7R8, COOR9, or NOH—CO—R10, wherein R7, R8, R9 and R10 are C1-C2 unbranched alkyl, and one, two, three, four or five of R2, R3, R4, R5 and R6 is NH2, COOH, SO3H, CN, CH3, COCH3, NO2, OCH3, NR7R8, COOR9, or NOH—CO—R10, wherein R7, R8, R9 and R10 are C1-C2 unbranched alkyl.
Claims11
A method for bleaching a dye in solution comprising contacting, in an aqueous solution, the dye with a laccase and an enhancing agent of the following formula:
- in which A is:
- and B is H, or C1-C4 unbranched alkyl wherein said alkyl may contain ether groups, and one, two, three, or four of R2, R3, R4, R5 and R6 are H, NH2, COOH, SO3H, CN, CH3, COCH3, NO2, OCH3, NR7R8, COOR9, or NOH—CO—R10, and at least one of R2, R3, R4, R5 and R6 is NH2, COOH, SO3H, CN, COOCH3, NO2, OCH3, NR7R8, COOR9, or NOH—CO—R10, and wherein R7, R8, R9 and R10 are C1-C2 unbranched alkyl.
A detergent composition comprising a laccase, a surfactant and an enhancing agent of the formula:
- in which A is:
- and B is H, or C1-C4 unbranched alkyl wherein said alkyl may contain ether groups, and one, two, three, or four;
- of R2, R3, R4, R5 and R6 are H, NH2, COOH, SO3H, CN, CH3, COCH3, NO2, OCH3, NR7R8, COOR9, or NOH—CO—R10, and at least one of R2, R3, R4, R5 and R6 is NH2, COOH, SO3H, CN, COCH3, NO2, OCH3, NR7R8, COOR9, or NOH—CO—R10, and wherein R7, R8, R9 and R10 are C1-C2 unbranched alkyl.
Dependencies are inferred from the claim text.