Low chlorine polyalkylene substituted carboxylic acylating agent compositions and compounds derived therefrom
AssigneeThe Lubrizol Corporation
InventorsJohn K. Pudelski, Matthew R. Sivik, Kurt F. Wollenberg, Richard Yodice, Jerry L. Rutter, Jeffry G. Dietz
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Abstract
Polyalkylene substituted carboxylic acylating agents which contain chlorine are synthesized by chlorine induced condensation of polyalkylenes and .alpha.-.beta. unsaturated carboxylic groups are treated with sulfur to reduce chlorine content of the carboxylic acylating agent.
Claims20
A sulfur containing polyalkylene substituted carboxylic acylating agent composition having reduced halogen content, said composition comprising reaction products formed by reacting:
- (A.) halogen containing substituted carboxylic acylating agent composition reaction products formed by reacting chlorine and/or bromine with M.sub.n 140-10,000 polyalkylene derived from C.sub.2 -C.sub.16 olefins and maleic anhydride to produce said halogen containing reaction products;
- with
- (B.) a component selected from the group consisting of:
- (a) sulfur;
- (b) organic sulfur donors;
- (c) sulfur and a Lewis acid in any order;
- (d) sulfur and a mineral acid in any order;
- wherein said sulfur containing reduced halogen composition is produced;
- said sulfur containing composition having increased viscosity values at 100.degree. C. when compared to the viscosity values for those of (A.) composition.
A method of making reduced chlorine content polyalkylene substituted phthalic anhydrides of formulas:
- ##STR6## said method comprising reacting a M.sub.n 140-10,000 chlorine containing polyalkylene substituted tetrahydro phthalic anhydride with a compound selected from the group consisting of:
- (a) sulfur;
- (b) iodine;
- (c) iodine and sulfur in any order.
Dependencies are inferred from the claim text.