S{8 -3,5(OR 6)-DIHYDROCARBYL-4-HYDROXY-PHENYL{9 {11 PHOSPHATES OR PHOSPHITES

摘要

Organic material, especially polypropylene, is stabilized by the additon of mono- or di- (dihydrocarbyl-hydroxyphenyl) alkyl phosphates, phosphites, thiophosphates or thiophosphites, such as 3,5-di-tert-butyl-4-hydroxyphenyl di-n-octadecyl phosphate. Effectiveness is synergistically improved by inclusion of a dialkyl thiodialkanoate such as dilaurylthiodipropionate.