| 摘要 |
The present invention relates to polymeric thermoplastic materials stabilised against thermal degradation by means of using one or more compounds of the formula (I) <CHEM> in which R1 is e.g. C1-C4alkyl or phenyl and n is e.g. 1 or 2 and, when n is 1, R2 is e.g. C1-C4alkyl, phenyl or cyclohexyl, and, when n is 2, R2 is e.g. C2-C6alkylene, methylenedicyclohexylene, a group <CHEM> methylphenylene or methylenediphenylene.h |
