Process for the transfer of alkyl groups in dialkyl trisulfides and mercaptans
AssigneeElf Atochem North America, Inc.
InventorStanley R. Sandler
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Abstract
The alkyl groups of dialkyl trisulfides are exchanged with the alkyl groups of mercaptans by reacting a tertiary dialkyl trisulfide with an alkyl mercaptan having a greater number of carbon atoms in its alkyl group than said trisulfide in the presence of an acidic or basic type catalyst for a time and a temperature sufficient to produce a dialkyl trisulfide having at least one transferred alkyl group from said mercaptan.
Claims14
A process for the transfer of alkyl groups comprising reacting a tertiary di-C.sub.4-12 alkyltrisulfide with a C.sub.5-20 alkyl mercaptan where the mercaptan contains a greater number of carbon atoms than an alkyl group on said trisulfide, in the presence of an effective amount of an acidic type catalyst at a temperature and for a time sufficient to produce a dialkyl trisulfide having at least one transferred alkyl group from said mercaptan.
A process for the transfer of alkyl groups comprising reacting a di-tertiary butyl, di-tertiary nonyl or di-tertiary dodecyl trisulfide with a C.sub.5-20 alkyl mercaptan where the mercaptan contains a greater number of carbon atoms than a tertiary alkyl group of said trisulfide in a mole ratio of trisulfide to mercaptan ranging from 1:1 to 1:10, at a temperature ranging from about 50.degree. to about 150.degree. C., at a pressure of between about atmospheric and 1000 psig, in the presence of an acidic cation exchange resin or a basic anion exchange resin in an effective catalytic amount, and for a time of between about 1 and about 8 hours.
Dependencies are inferred from the claim text.