Production of dihydrocarbyl polysulfides

Details Production of dihydrocarbyl polysulfides Production of dihydrocarbyl polysulfides

1991-03-25

1992-09-08

Cintins, Marianne M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfur containing

568 25, C07C32120

Patent

active

051460009

ABSTRACT:
Hydrocarbyl mercaptan is reacted with sulfur in the presence of added alumina catalyst. With tertiary alkyl mercaptans high yields of di-tert-alkyl trisulfides are formed with excellent selectivity. With primary alkyl mercaptans the process can be controlled to form products enriched in either dialkyl disulfides or dialkyl trisulfides, and in either case little or no tetrasulfides are formed. The process is environmentally friendly in that halogen-containing reactants such as sulfur chlorides are not used and thus the products are not contaminated with significant amounts of halogen residues.

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