Use of substituted biaromatic beta-diketone as stabilising agent of halogenated polymers and resulting polymer

摘要

The present invention relates to the use of a stabilising composition free of derivatives of 6-aminouracyl or 6-aminothiouracyl type, and comprising at least one beta-diketone bearing two aromatic nuclei, at least one of which bears at least one substituent on one of the two orthopositions or on the paraposition; the said substituent being chosen from -R, -OR, -SR, -COOH, -O-CF3 and -S-CF3 radicals, in which formulae R is an alkyl radical. The invention also relates to halogenated polymers comprising such a stabilising composition.