| 摘要 |
Malonates of the formula I <IMAGE> (I) in which R1 is hydrogen or C1-C4-alkyl, R2 is C1-C12-alkyl, C3-C4-alkenyl, benzyl or phenyl which is optionally substituted by C1-C8-alkyl or C1-C8-alkoxy, or is cyano, R3 is C1-C12-alkyl, C3-C4-alkenyl or benzyl and X denotes hydrogen, oxyl, C1-C12-alkyl, C3-C6-alkenyl, C3-C4-alkinyl, C2-C21-alkoxyalkyl, C7-C8-aralkyl, 2,3-epoxypropyl, an aliphatic acyl group with 1-4 C atoms or one of the groups -CH2COOR4, -CH2-CH(R5)-OR6, -COOR7 or -CONHR7, in which R4 is C1-C8-alkyl, C3-C6-alkenyl, phenyl, C7-C8-aralkyl or cyclohexyl and R5 is hydrogen, methyl or phenyl and R6 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, C1-C4-alkyl or C1-C8-alkoxy and/or by hydroxyl, and R7 is C1-C12-alkyl, cyclohexyl, phenyl or benzyl as stabilizer for organic polymers.
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