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US 4,394,323 AGranted
Production of antimony organophosphorodithioates
AssigneePhillips Petroleum Company
InventorsRichard E. Lowery, Bruce W. Gordon, Barry N. Steger
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Abstract
The efficiency of salt-forming reactions between antimony compounds and hydrocarbylphosphorodithioic acids is improved by adding the antimony compounds in small increments.
Claims4
A process of reacting one or more antimony reagents of the general formula Sb.sub.m X.sub.n ;
- wherein X is --O, --OH, --OOCR", --Cl, --Br, or --F;
- R" is an organic radical containing 1 to 12 carbon atoms;
- and m and n are independent and represent numbers from 1 to 5, with at least one hydrocarbyl phosphorodithioic acid component to produce antimony dihydrocarbylphosphorodithioates comprising the steps of
- (a) adding less than the stoichiometric amount of antimony reagent to the acid component,
- (b) allowing the added antimony reagent to react with the acid component,
- (c) repeating steps (a) and (b) until substantially all of the acid component is neutralized, and (d) separating the desired antimony salt from the product of step (c).
3 more elements
Dependencies are inferred from the claim text.