申请人:Ciba-Geigy Corporation
公开号:US05414033A1
公开(公告)日:1995-05-09
Novel compounds of the formula I and formula II ##STR1## in which R and R.sub.1, independently of one another, are hydrogen or C.sub.1 -C.sub.4 alkyl or together with the carbon atom to which they are attached form a 3,4-dehydrocyclohexylidene ring, R.sub.2 is hydrogen, C.sub.1 -C.sub.8 alkyl or C.sub.5 -C.sub.6 cycloalkyl, R.sub.3 is C.sub.1 -C.sub.8 alkyl or C.sub.5 -C.sub.6 cycloalkyl, R.sub.4, R.sub.5 and R.sub.6, independently of one another, are hydrogen or C.sub.1 -C.sub.4 alkyl, when alkyl, R.sub.4, R.sub.5 and R.sub.6 together containing 1 to 4 carbon atoms, and R.sub.7 and R.sub.8 are hydrogen or together an additional direct bond, are described for use as stabilizers for organic materials against thermal, oxidative or light-induced degradation.
本发明涉及一种化合物,其化学式I和化学式II如下:##STR1## 在其中R和R.sub.1独立地为氢或C.sub.1-C.sub.4烷基,或者与它们连接的碳原子一起形成3,4-脱氢环己基亚甲环;R.sub.2为氢,C.sub.1-C.sub.8烷基或C.sub.5-C.sub.6环烷基;R.sub.3为C.sub.1-C.sub.8烷基或C.sub.5-C.sub.6环烷基;R.sub.4、R.sub.5和R.sub.6独立地为氢或C.sub.1-C.sub.4烷基,当烷基时,R.sub.4、R.sub.5和R.sub.6一起含有1至4个碳原子;R.sub.7和R.sub.8为氢或一起形成额外的直接键。该化合物可用于有机材料的稳定剂,以防止热、氧化或光诱导的降解。