Process for producing organic polysulfide compounds
AssigneePhillips Petroleum Company
InventorJames E. Shaw
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Abstract
A process which can be used to produce organic polysulfide compounds is provided. The process comprises contacting, in the presence of a catalyst, an organic disulfide with sulfur under conditions sufficient to produce an organic polysulfide wherein the organic disulfide, sulfur, and catalyst are each present in an amount effective to produce an organic polysulfide and the catalyst comprises a base and a surfactant.
Claims24
A process comprising contacting, in the presence of a catalyst, an organic disulfide with elemental sulfur under a condition sufficient to produce an organic polysulfide wherein said catalyst comprises a base which is not alkylamine and a surfactant;
- and said organic disulfide, sulfur, and catalyst are each present in an amount effective to produce an organic polysulfide.
A process for producing an organic polysulfide comprising contacting, in the presence of a catalyst, an organic disulfide with elemental sulfur wherein:
- said organic polysulfide has the formula of R—Sn—R;
- said catalyst comprises a base and a surfactant;
- said base is selected from the group consisting of inorganic bases and organic bases, and combinations of any two or more thereof;
- said surfactant is an alkoxylated compound selected from the group consisting of alkoxylated alcohols, alkoxylated mercaptans, and combinations of any two or more thereof;
- each R is a hydrocarbyl radical having 1 to about 30 carbon atoms;
- and n is a number greater than 2 and less than about 10.
A process for producing dimethyl trisulfide comprising contacting dimethyl disulfide and elemental sulfide, in the presence of a catalyst comprising a base and an ethoxylated alcohol having a formula of R2O(CH2CH2O)7H, wherein said base is selected from the group consisting of sodium hydroxide, sodium hydrosulfide, sodium methanethiolate, and combinations of two or more thereof;
- and R2 is a secondary alkyl radical having 11 to 15 carbon atoms and 7 is the averaged number of the ethylene oxide units.
Dependencies are inferred from the claim text.