申请人:Ciba-Geigy Corporation
公开号:US04612341A1
公开(公告)日:1986-09-16
Organic materials are stabilized against thermal, oxidative and photo-degradation by incorporating therein an effective amount of a compound of formula I ##STR1## wherein T.sub.1 and T.sub.2 independently are alkyl, cycloalkyl, phenyl, aralkyl, T.sub.2 may also be hydrogen, T is alkyl, phenyl or substituted hydroxyphenyl, E is a direct bond, alkylene, cycloalkylene, phenylene or --CH.sub.2 CH(ST)CH.sub.2 --, T.sub.3 and T.sub.4 are independently hydrogen, alkyl or cycloalkyl; or together are alkylene, T.sub.5 is hydrogen, alkyl or phenyl, n is 1 or 2, t is 0 or 1, and t is 2-n. Polyolefins, ABS resins, natural and synthetic rubbers and polyesters are particularly well stabilized by the compounds of formula I.
有机材料可以通过添加式I的化合物来稳定其对热、氧化和光降解的抵抗能力。其中,式中T1和T2独立地为烷基、环烷基、苯基、芳基烷基,T2也可以是氢,T为烷基、苯基或取代羟基苯基,E为直接键、烷基、环烷基、苯基或--CH2CH(ST)CH2--,T3和T4独立地为氢、烷基或环烷基;或者一起为亚烷基,T5为氢、烷基或苯基,n为1或2,t为0或1,t为2-n。聚烯烃、ABS树脂、天然和合成橡胶以及聚酯特别适用于式I的化合物稳定。