A class of malonates having the structure :
wherein :
m is an integer from 0 to 1
m1 is an integer from 0 to 4 ;
R1 is a C1-C20 radical selected from the group consisting of alkyl, cycloalkyl, alkenyl, cycloalkenyl, phenyl, aryl, benzoyl and aroyl radicals, and when m is 0 and m1 is at least 1 then R1 can be hydrogen ;
R2 and R3 are radicals selected from the group consisting of C1-C12 alkyl and C5-C12 cycloalkyl radicals ; and
R4 is independently selected from the same group as R1 except that R4 is other than hydrogen, benzoyl and aroyl radicals, has been identified as providing effective bleach precursors. These precursors are employed in conjunction with a peroxygen compound.
一类
丙二酸盐,具有......结构:
其中:
m 是 0 至 1 的整数
m1 是 0 至 4 的整数;
R1 是 C1-C20 自由基,选自由烷基、环烷基、烯基、环烯基、苯基、芳基、苯甲酰 基和芳基组成的组,当 m 为 0 且 m1 至少为 1 时,R1 可以是氢;
R2 和 R3 是选自 C1-C12 烷基和 C5-C12 环烷基的自由基;以及
R4 独立地选自与 R1 相同的基团,但 R4 不是氢、苯甲酰基和芳基。这些前体与过氧化合物一起使用。