| 摘要 |
There are described compositions comprisinga) an emulsion crude rubber, synthetic latex or natural rubber latex subject to oxidative, thermal, dynamic and/or light-induced degradation, andb) as stabilizer at least one compound of formula Iwherein R1 is C8-C20alkyl;and optionallyc) as further stabilizer at least one compound of formula IIwherein R2 is C8-C12alkyl, R3 is hydrogen, C1-C12alkyl, cyclohexyl, 1-methylcyclohexyl, benzyl, alpha-methylbenzyl, alpha,alpha-dimethylbenzyl or -CH2-S-R2,R4 is C1-C12alkyl, benzyl, alpha-methylbenzyl, 60 ,alpha-dimethylbenzyl or -CH2-S-R2, andR5 is hydrogen or methyl. |
