Sulfurized, transesterified oil additives and their use in a lubricating oil and a fuel
AssigneeFerro Corporation
InventorsKarl P. Kammann, Jr., Marvin J. Den Herder, Terrence L. Wagner
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Abstract
Improved lubricant additive compositions, derived from fatty oils, comprise triglycerides which have been transesterified with polybasic carboxylic acids prior to sulfurization. Such additive compositions possess improved solubility in oils and impart improved lubrication properties to both lubricant and fuel compositions.
Claims41
A sulfurized, triglyceride additive composition comprising a sulfurized, transesterified triglyceride wherein the total acid component of the triglyceride includes from about 5 to about 50 mole % polybasic carboxylic acids.
A process for preparing a sulfurized, transesterified triglyceride additive composition, comprising the steps of:
- (1) transesterifying one or more triglycerides with one or more organic polybasic acids, or esters thereof, to yield a transesterified triglyceride wherein the total acid component comprises from about 5 mole % to about 50 mole % polybasic carboxylic acids;
- and
- (2) sulfurizing the transesterified triglyceride product mixture of step 1 with elemental sulfur to incorporate bound sulfur in an amount within the range from about 2 wt. % to about 10 wt. %, based upon the transesterified triglyceride product mixture.
A lubricating oil composition, comprising:
- (1) a refined base oil, having lubricating oil viscosity and volatility properties;
- and
- (2) a minor amount, from about 0.05 to about 15 wt. % of the lubricating oil composition, of a sulfurized, triglyceride additive composition, comprising a sulfurized, transesterified triglyceride wherein the total acid component of the triglyceride includes from about 5 to about 50 mole % polybasic carboxylic acids.
A fuel composition, comprising:
- (1) a blended base fuel, having suitable volatility and combustion properties;
- and
- (2) a minor amount, from about 0.0005 to about 0.1 wt. % of the fuel composition, of a sulfurized triglyceride additive composition, comprising a sulfurized, transesterified triglyceride wherein the total acid component of the triglyceride includes from about 5 to about 50 mole % polybasic carboxylic acids.
Dependencies are inferred from the claim text.