A compound having formula (I),
wherein G1 represents a C4-C22 alkyl or alkenyl group, a C8-C20 aralkyl group or formula (II)
wherein G3 is a difunctional C2-C18 alkyl or alkenyl group, a difunctional C6-C20 aryl group or G3 is absent; provided that G1 is not 2-butyl, n-hexyl, n-octyl, n-dodecyl, n-hexadecyl or 2-phenylethyl.
化合物的
化学式为(I),其中G1表示C4-C22烷基或烯基,C8-C20芳基烷基或
化学式(II)其中G3是双官能团C2-C18烷基或烯基,双官能团C6-C20芳基或G3不存在;前提是G1不是2-丁基,正己基,
正辛基,正
十二烷基,
正十六烷基或2-苯乙基。