Process for the preparation of 2,6-di-tert-butyl-4-mercapto-phenol and 4,4'-isopropylidenedithio-bis- (2,6-di-tert-butylphenol).

摘要

This invention relates to an improvement in a process for making 2,6-di-tertiarybutyl-4-mercaptophenol and 4,4-isopropylidenedithio-bis-(2,6-di-tertiarybutylphenol) which comprises reduction of bis(3,5-di-tertiarybutyl-4-hydroxyphenol)polysulfide with hydrogen gas in the presence of a catalytic amount of cobalt-molybdenum catalyst.