Lubricant composition for a gas engine
AssigneeTotal Marketing Services
InventorsSophie Oppilliart, Santiago Carreras, Erwan Bertho
Life of this patent
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Abstract
Disclosed is a method of lubricating a gas engine using a lubricant including at least one mineral base oil and at least one ester selected from among the polyol esters. The composition includes at least 50% by weight of mineral base oil and at least 5% by weight of polyol ester relative to the total weight of the lubricant composition.
Claims14
A method to improve the detergency properties of a lubricant composition for a gas engine, the lubricant composition comprising at least 50% by weight of mineral base oil, said method comprising adding to the lubricant composition from 5% to 15% by weight of polyol ester relative to the total weight of the lubricant composition,
- wherein the polyol ester is obtained by esterification of at least one carboxylic acid with at least one polyol,
- wherein said polyol comprises 6 OH groups and comprises from 6 to 10 carbon atoms, and
- wherein said carboxylic acid is a saturated and branched monocarboxylic acid comprising from 8 to 20 carbon atoms.
A method to improve the detergency properties of a lubricant composition for a gas engine, the lubricant composition comprising at least 50% by weight of mineral base oil, said method comprising adding to the lubricant composition from 5% to 15% by weight of polyol ester relative to the total weight of the lubricant composition, wherein the polyol ester is obtained by esterification of at least one monocarboxylic acid with at least one polyol, said polyol being dipentaerythritol, and wherein said monocarboxylic acid is a saturated and branched monocarboxylic acid, comprising from 8 to 20 carbon atoms.
Dependencies are inferred from the claim text.