Process for the manufacture of dialkyl disulfides and polysulfides
AssigneePennwalt Corporation
InventorsBernard Buchholz, Edward J. Dzierza, Robert B. Hager
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Abstract
A process is disclosed for continuously preparing dialkyl disulfides and dialkyl polysulfides by reacting at elevated temperature and in the presence of a solid, particulate catalyst an alkene and hydrogen sulfide in a first reaction zone, and then passing the reactor effluent into a second reaction zone where it is reacted at elevated temperature with molten, elemental sulfur in the presence of a solid, particulate catalyst.
Claims23
A process for the preparation of di(C.sub.2 -C.sub.20)alkyl disulfides and polysulfides which comprises continuously reacting over a solid, particulate catalyst in a first reaction zone a C.sub.2 -C.sub.20 alkene with hydrogen sulfide at elevated temperature whereby an effluent product containing a C.sub.2 -C.sub.20 alkylmercaptan is continuously formed, and then continuously reacting over a solid, particulate catalyst, which is a Type X, Type Y or Type L zeolite catalyst, in a second reaction zone said effluent product and molten, elemental sulfur at elevated temperature whereby the major product continuously formed is a di(C.sub.2 -C.sub.20)alkyl disulfide or polysulfide.
Dependencies are inferred from the claim text.