Production of dihydrocarbyl polysulfides

Details Production of dihydrocarbyl polysulfides Production of dihydrocarbyl polysulfides

C - Chemistry, Metallurgy

07

C

C07C 319/24 (2006.01) C07C 321/14 (2006.01)

Patent

CA 2062327

PRODUCTION OF DIHYDROCARBYL POLYSULFIDES Abstract of the Disclosure 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 mercaptansthe 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 assulfur chlorides are not used and thus the products are not contaminated with significant amounts of halogen residues.

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