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US 4,787,996 AGranted
Mannich base oil additives
AssigneeMobil Oil Corporation
InventorsAndrew G. Horodysky, Robert M. Gemmill, Jr.
Life of this patent
Estimating the term…
Abstract
Mannich bases, prepared using a phenol substituted with a medium length branched alkyl chain, the alkyl being derived from a 1-olefin oligomer. These Mannich bases act as friction-reducing agents in lubricant and liquid fuel compositions.
Claims16
A method for reducing the coefficient of friction of a liquid lubricating oil which comprises adding to such an oil a coefficient of friction-reducing amount of the product resulting from reacting
- an aldehyde;
- at least one amine selected from the group consisting of primary amines containing from 8 to 18 carbon atoms and polyalkylenepolyamines of the formula
- NHX(R.sup.4 NH).sub.n R.sup.2
- wherein R.sup.2 and X are selected from the group consisting of hydrogen, a hydrocarbyl group and a hydroxyhydrocarbyl group,
- either containing 6 to 18 carbon atoms, R.sup.4 is an alkylene group containing 1 to 5 carbon atoms and n is 1 to 10;
- and,
- at least one alkyl-substituted phenol wherein the alkyl is branched, contains from 16 to 40 carbon atoms and is derived from a 1-olefin oligomer containing from 8 to 12 carbon atoms,
- the reaction being carried out from about 60.degree. C. to about 130.degree. C. using the reactants in a respective molar ratio of 1.0-2.0:1.0-2.0:1.0.
5 more elements
A liquid lubricating oil composition which comprises a liquid lubricating oil and a coefficient of friction-reducing amount of the product resulting from reacting
- an aldehyde;
- at least one amine selected from the group consisting of primary amines containing from 8 to 18 carbon atoms and polyalkylenepolyamines of the formula
- NHX(R.sup.4 NH).sub.n R.sup.2
- wherein R.sup.2 and X are selected from the group consisting of hydrogen, a hydrocarbyl group and a hydroxyhydrocarbyl group,
- either containing 6 to 18 carbon atoms, R.sup.4 is an alkylene group containing 1 to 5 carbon atoms and n is 1 to 10;
- and,
- at least one alkyl-substituted phenol wherein the alkyl is branched, contains from 16 to 40 carbon atoms and is derived from a 1-olefin oligomer containing from 8 to 12 carbon atoms,
- the reaction being carried out from about 60.degree. C. to about 130.degree. C. using the reactants in a respective molar ratio of 1.0-2.0:1.0-2.0:1.0.
5 more elements
Dependencies are inferred from the claim text.