申请人:Ciba-Geigy AG
公开号:US04293468A1
公开(公告)日:1981-10-06
Malonates of the formula I ##STR1## in which R.sub.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl, R.sub.2 is C.sub.1 -C.sub.12 -alkyl, C.sub.3 -C.sub.4 -alkenyl, benzyl or phenyl which is optionally substituted by C.sub.1 -C.sub.8 -alkyl or C.sub.1 -C.sub.8 -alkoxy, or is cyano, R.sub.3 is C.sub.1 -C.sub.12 -alkyl, C.sub.3 -C.sub.4 -alkenyl or benzyl and X denotes hydrogen, oxyl, C.sub.1 -C.sub.12 -alkyl, C.sub.3 -C.sub.6 -alkenyl, C.sub.3 -C.sub.4 -alkinyl, C.sub.2 -C.sub.21 -alkoxyalkyl, C.sub.7 -C.sub.8 -aralkyl, 2,3-epoxypropyl, an aliphatic acyl group with 1-4 C atoms or one of the groups --CH.sub.2 COOR.sub.4, --CH.sub.2 --CH(R.sub.5)--OR.sub.6, --COOR.sub.7 or --CONHR.sub.7, in which R.sub.4 is C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.6 -alkenyl, phenyl, C.sub.7 -C.sub.8 -aralkyl or cyclohexyl and R.sub.5 is hydrogen, methyl or phenyl and R.sub.6 denotes hydrogen or an aliphatic or aromatic, araliphatic or alicyclic acyl group with 1-18 C atoms, in which the aromatic part can optionally be substituted by chlorine, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.8 -alkoxy and/or by hydroxyl, and R.sub.7 is C.sub.1 -C.sub.12 -alkyl, cyclohexyl, phenyl or benzyl as stabilizer for organic polymers.
公式I中的马隆酸酯,其中R1是氢或C1-C4烷基,R2是C1-C12烷基,C3-C4烯基,苄基或苯基,其可以选择性地被C1-C8烷基或C1-C8烷氧基取代,或是氰基,R3是C1-C12烷基,C3-C4烯基或苄基,X表示氢,氧基,C1-C12烷基,C3-C6烯基,C3-C4炔基,C2-C21烷氧基烷基,C7-C8芳基烷基,2,3-环氧丙基,具有1-4个C原子的脂肪酰基或者是--CH2COOR4,--CH2--CH(R5)--OR6,--COOR7或--CONHR7中的一种基团,其中R4是C1-C8烷基,C3-C6烯基,苯基,C7-C8芳基烷基或环己基,R5是氢,甲基或苯基,而R6表示氢或具有1-18个C原子的脂肪或芳香族,芳基烷基或脂环族酰基,其中芳香族部分可以选择性地被氯,C1-C4烷基或C1-C8烷氧基和/或羟基取代,而R7是C1-C12烷基,环己基,苯基或苄基,作为有机聚合物的稳定剂。