Tris(substituted hydroxyphenyl)trithioorthoesters of the formula I
wherein
R¹ and R² are independently hydrogen, C₁-C₁₈alkyl, C₅-C₁₂cycloalkyl, phenyl, phenyl substituted by C₁-C₁₈alkyl, C₇-C₉aralkyl which is unsubstituted or substituted by C₁-C₁₈alkyl; and
A is hydrogen, C₁-C₃₀alkyl, C₅-C₁₂cycloalkyl, aryl, aryl substituted by C₁-C₁₈alkyl, C₇-C₉aralkyl which is unsubstituted or substituted by C₁-C₁₂alkyl are useful as stabilizers for organic polymers and lubricating oils to counteract the degradative effects of heat, light and air.
Tris (substituted hydroxyphenylthio) trithioorthoester stabilizers for
申请人:Ciba-Geigy Corporation
公开号:US04659762A1
公开(公告)日:1987-04-21
The title compounds correspond to the formula ##STR1## and are useful as stabilizers for organic polymers and lubricating oils to counteract the degradative effects of heat, light and air.