| 摘要 |
65702-367 A bleaching composition comprises (a) hydrogen peroxide or a peroxide that generates hydrogen peroxide in an aqueous solution and (b) an organic peracid precursor having the formula (I): (I) ¢wherein R1 is a hydrocarbon group, X is O, NHCO, CONH, CO, OCO, COO or ?, Y is -R5-, or - (where n is 1 to 10), R2 and R3 are each a lower alkyl, R4 and R5 are each alkylene, , -CH2COOCH2-, -CH2COO(CH2)3-, L is a leaving group such as , and X- is a counter ion!. The peracid precursor increases the bleaching effect and often is highly biodegradable.
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