申请人:Ciba-Geigy Corporation
公开号:US04360675A1
公开(公告)日:1982-11-23
Homopolymers and copolymers of vinyl ethers of the formula I ##STR1## in which R is hydrogen or methyl and R.sup.1 is hydrogen C.sub.1 -C.sub.8 -alkyl, benzyl, allyl or C.sub.1 -C.sub.2 -acyl, are effective stabilizers for plastics, especially to protect them against photochemical degradation. The monomeric vinyl ethers of the formula I are novel compounds, which can be prepared from the corresponding piperidinols by vinylation by means of acetylene or by transvinylation by means of vinyl ethers or vinyl esters.
公式I中的乙烯醚单体和共聚物,其中R是氢或甲基,R.sup.1是氢,C.sub.1-C.sub.8-烷基,苄基,烯丙基或C.sub.1-C.sub.2-酰基,对于塑料是有效的稳定剂,特别是用于保护它们免受光化学降解的影响。公式I中的单体乙烯醚是新化合物,可以通过乙炔乙烯化或通过乙烯醚或乙烯酯的转移乙烯基反应从相应的哌啶醇制备。