Two-cycle synthetic lubricating oil
AssigneeExxon Chemical Patents Inc.
InventorJohn Henry Smythe
Life of this patent
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Abstract
A two-cycle oil composition comprising: (a) 10-20% of a first synthetic ester base stock oil (a copolymer of an alpha-olefin with an ester of a dicarboxylic acid, viscosity 20 to 50 cSt at 100.degree. C.); (b) 18-30% of a second synthetic ester base stock oil (an oxo alcohol of a dicarboxylic acid, viscosity 3 to 10 cSt at 100.degree. C.; (c) 30-40% of a polybutene polymer (Mn 300-1500); (d) 15-25% of a nor liquid solvent (boiling point up to 300.degree. C., flash point of 60 .degree.-120.degree. C.); (e) 0.2 to 2.0% of an oil soluble copper compound, and (f) 0 to 5% of other lubricating oil additives.
Claims13
A two-cycle oil composition comprising:
- (a) 10-20% of a first synthetic ester base stock oil being a copolymer of an alpha-olefin with an ester of a dicarboxylic acid, the oil having a viscosity of 20 to 50 cSt at 100.degree. C.,
- (b) 18-30% of a second synthetic ester base stock oil being an oxo alcohol ester-of a dicarboxylic acid, the oil having a viscosity of 3 to 10 cSt at 100.degree. C.,
- (c) 30 to 40% of a polybutene polymer being a polybutene, polyisobutylene or mixture of polybutenes and polyisobutylenes having an Mn of 300-1500,
- (d) 15 to 25% of a normally liquid solvent having a boiling point up to 300.degree. C. and a flash point of 60.degree.-120.degree. C.,
- (e) 0.2 to 2.0% of an oil soluble copper compound, and
- (f) 0 to 5% of other lubricating oil additives.
Dependencies are inferred from the claim text.