| 摘要 |
Asymmetrical bleach activators are provided. The compounds have formula (I), wherein L is a leaving group selected from the group consisting of: (II), (III), (IV), (V) and (VI); wherein j is 0 or 1 and furthermore, when j is 0, then i is 0, and when j is 1, then i is 0 or 1. The spacer group Z, when present, is selected from the group consisting of C2-C16 linear or branched, substituted or unsubstituted alkyl, alkaryl, aralkyl, aryl, and (VII), wherein m = 1 to 10 and each of R4-R7 are independently selected from H and CH3; wherein the group G can be R1 or R3; R1 is a C7-C13 linear or branched chain saturated or unsaturated alkyl group, preferably a C7-C11 linear or branched chain saturated alkyl group, R2 is independently selected from the group consisting of C1-C8 linear or branched chain saturated or unsaturated alkyl, alkaryl, aralkyl and aryl, preferably a C1-C4 linear saturated alkyl group and R3 is a C1-C4 linear or branched chain saturated or unsaturated alkyl group. Preferred compounds include the compounds when R1 is a C7-C11 linear or branched saturated alkyl group, and most preferably when R1 is a linear C8 or C9 saturated alkyl group and R2, when present, and R3 are CH3. Bleach additive and bleaching compositions including the asymmetrical bleach activators and methods of cleaning fabrics are also provided.
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