申请人:Ciba-Geigy Corporation
公开号:US04611023A1
公开(公告)日:1986-09-09
Organic materials are stabilized against thermal, oxidative and photo-degradation by incorporating therein an effective amount of a compound of formula I ##STR1## wherein R is tert-butyl, R.sub.1 is hydrogen or alkyl of 1 to 4 carbon atoms, R.sub.2 is alkyl of 1 to 17 carbon atoms, cyclohexyl, cyclohex-3-enyl, phenyl or 3,5-di-tert-butyl-4-hydroxyphenyl; where R.sub.1 and R.sub.2 together must have a total of at least 5 carbon atoms; or where R.sub.1 and R.sub.2 together are alkylene of 5 to 11 carbon atoms. Polyolefins, ABS resins, natural and synthetic rubbers and polyesters are particularly well stabilized by the compounds of formula I.
有机材料通过向其中加入化学式I的化合物的有效量而稳定,以抵抗热降解、氧化和光降解。在化学式I中,R为叔丁基,R1为氢或1至4个碳原子的烷基,R2为1至17个碳原子的烷基、环己基、环己-3-烯基、苯基或3,5-二叔丁基-4-羟基苯基;其中R1和R2的总碳原子数必须至少为5个;或者R1和R2一起是5至11个碳原子的亚烷基。聚烯烃、ABS树脂、天然和合成橡胶以及聚酯特别适合通过化学式I的化合物进行稳定。