USE OF PHENOL-MERCAPTOCARBOXYLIC ACID ESTERS AS STABILISERS FOR ORGANIC POLYMERS AND LUBRICANTS, AND NOVEL PHENOL-MERCAPTOCARBOXYLIC ACID ESTERS

摘要

The phenol-mercaptocarboxylic acid esters used for stabilising elastomers are those of the formula I < IMG > (I) wherein R1 is tert.-butyl, R2 is methyl or tert.-butyl and R3 is straight-chain or branched C1-C18-alkyl which may contain -O- or -S-bridges, C5-C6-cycloalkyl or benzyl. Related compounds in which R2 is tert.-butyl, and R3 is straight or branched chain C5-C12 alkyl which may contain -O- or -S-bridges also function as stabilizers for lubricants. Isooctyl di-tert.-butyl-4-hydroxybenzylmercaptoacetate is preferably used.