Engine oil lubricants formed from complex alcohol esters
AssigneeExxon Chemical Patents Inc.
InventorsRichard H. Schlosberg, David Wayne Turner, Martin A. Krevalis, Fay H. Gordon, Ulrich Witten
Life of this patent
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Abstract
A crankcase engine lubricant which comprises the add mixture of the following components: (A) a lubricating oil which comprises the add mixture of the following components: a complex alcohol ester basestock and at least one additional basestock; and (B) an additive package; wherein the crankcase engine lubricant exhibits a percent fuel economy improvement in the range between about 0.3 to 5.0%, versus the lubricating oil without the complex alcohol ester basestock.
Claims42
A process for improving the fuel economy of a vehicle powered by an internal combustion engine having a crankcase, which comprises:
- adding to said crankcase a lubricating oil which comprises an add mixture of the following components:
- a complex alcohol ester basestock which is a reaction product of an add mixture of the following:
- (1) a polyhydroxyl compound selected from the group consisting of neopentyl glycol, technical grade pentaerythritol, mono-pentaerytritol, di-pentaerythritol, trimethylolpropane, trimethylolethane and trimethylolbutane;
- (2) a polybasic acid or an anhydride of a polybasic acid, provided that the ratio of equivalents of said polybasic acid to equivalents of alcohol from said polyhydroxyl compound is in the range between about 1.6:1 and 2:1;
- and (3) a monohydric alcohol, provided that the ratio of equivalents of said monohydric alcohol to equivalents of said polybasic acid is in the range between about 0.84:1 and 1.2:1;
- wherein said complex alcohol ester exhibits a viscosity in the range between about 100-700 cSt at 40.degree. C. and has a polybasic acid ester concentration of less than or equal to 70 wt. %, based on said complex alcohol ester, and at least one additional basestock;
- and
- operating said internal combustion engine wherein said lubricating basestock oil exhibits a percent fuel economy improvement in the range between about 0.3 to 5.0%, versus said lubricating oil without said complex alcohol ester basestock.
A crankcase lubricant which comprises an add mixture of the following components:
- a lubricating oil which comprises an add mixture of the following components:
- a complex alcohol ester basestock which is a reaction product of an add mixture of the following:
- (1) a polyhydroxyl compound selected from the group consisting of neopentyl glycol, technical grade pentaerythritol, mono-pentaerytritol, di-pentaerythritol, trimethylolpropane, trimethylolethane and trimethylolbutane;
- (2) a polybasic acid or an anhydride of a polybasic acid, provided that the ratio of equivalents of said polybasic acid to equivalents of alcohol from said polyhydroxyl compound is in the range between about 1.6:1 and 2:1;
- and (3) a monohydric alcohol, provided that the ratio of equivalents of said monohydric alcohol to equivalents of said polybasic acid is in the range between about 0.84:1 and 1.2:1;
- wherein said complex alcohol ester exhibits a viscosity in the range between about 100-700 cSt at 40.degree. C. and has a polybasic acid ester concentration of less than or equal to 70 wt. %, based on said complex alcohol ester, and at least one additional basestock;
- and
- an additive package;
- wherein said crankcase engine lubricant exhibits a percent fuel economy improvement in the range between about 0.3 to 5.0%, versus said lubricating oil without said complex alcohol ester basestock.
Dependencies are inferred from the claim text.