Lubricant thickener systems from modified tall oil fatty acids, lubricating compositions, and associated methods
AssigneeIngevity South Carolina, LLC
InventorDevin Granger
Life of this patent
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Abstract
The present disclosure provides a soap thickener and methods of making the same. The soap thickener includes a metal soap of a carboxylic acid composition in a base oil, wherein the carboxylic acid composition includes a modified fatty acid composition prepared by performing a pericyclic reaction between an unsaturated small molecule and a fatty acid mixture. The present disclosure further provides lubricating compositions that include the soap thickener of the present disclosure and methods of preparing the same.
Claims24
A lubricating composition comprising:
- a base oil thickened to a grease consistency with a soap thickener comprising:
- a metal soap of a carboxylic acid composition in a base oil,
- wherein the carboxylic acid composition comprises a blend of (1) a modified fatty acid composition prepared by performing a pericyclic reaction between an unsaturated small molecule and a fatty acid mixture, and (2) additional fatty acids, wherein the unsaturated small molecule is acrylic acid, fumaric acid, maleic anhydride, or a combination thereof.
A lubricating composition comprising:
- a base oil thickened to a grease consistency with a soap thickener produced by a method comprising:
- preparing a soap of a carboxylic acid composition in a base oil to produce the soap thickener,
- wherein the carboxylic acid composition comprises a blend of (1) a modified fatty acid composition prepared by performing a pericyclic reaction between an unsaturated small molecule and a fatty acid mixture, and (2) additional fatty acids, wherein the unsaturated small molecule is acrylic acid, fumaric acid, maleic anhydride, or a combination thereof.
A lubricating composition comprising:
- a base oil thickened to obtain a lubricating composition with a National Lubricating Grease Institute (NLGI) grade of NLGI 000 to NLGI 6, wherein the base oil is thickened with a soap thickener produced by a method including:
- combining a base oil and a carboxylic acid composition to produce a base oil, carboxylic acid mixture composition in the base oil, wherein the carboxylic acid composition comprises a blend of (1) a modified fatty acid composition prepared by performing a pericyclic reaction between an unsaturated small molecule and a fatty acid mixture, and (2) additional fatty acids mixture;
- adding a slurry of excess metal base in water to the base oil, carboxylic acid mixture to produce a slurry mixture, wherein the metal base is lithium hydroxide, calcium hydroxide, aluminum hydroxide, sodium hydroxide, potassium hydroxide, or a combination thereof;
- and
- neutralizing the slurry mixture to form the soap thickener,
- wherein:
- (i) the unsaturated small molecule is acrylic acid, fumaric acid, maleic anhydride, or a combination thereof, and
- (ii) the fatty acid mixture includes tall oil fatty acids (TOFA), 5-carboxy-4-hexylcyclohex-2-ene-1-octanoic acid, 6-carboxy-4-hexylcyclohex-2-ene-1-octanoic acid, C21 diacid, or a combination thereof.
A method of preparing a lubricating composition, the method comprising:
- providing a soap thickener comprising a metal soap of a carboxylic acid composition in a base oil, wherein the carboxylic acid composition comprises a blend of (1) a modified fatty acid composition prepared by performing a pericyclic reaction between an unsaturated small molecule and a fatty acid mixture, and (2) additional fatty acids, wherein the unsaturated small molecule is acrylic acid, fumaric acid, maleic anhydride, or a combination thereof;
- heating the soap thickener;
- cooling the soap thickener;
- diluting the cooled soap thickener with a sufficient amount of base oil to obtain a lubricating composition with a National Lubricating Grease Institute (NLGI) grade of NLGI 000 to NLGI 6;
- and
- milling the soap thickener.
Dependencies are inferred from the claim text.