Ultra Low Phosphorus Lubricant Composition Incorporating Amine Tungstate
AssigneeR.T. Vanderbilt Company, Inc.
InventorsSteven G. Donnelly, Ronald J. Hiza, Glenn A. Mazzamaro
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Abstract
A low-phosphorus lubricating composition having less than 600 ppm phosphorus, comprising at least 85 weight % of a lubricating base blend, and an additive comprising the following, as a weight % of the total composition: (1) an amine tungstate compound at an amount which provides about 0.1 to 1400 ppm W; (2) an alkylated diphenylamine at about 0.1-2%; and (3) a zinc dithiocarbamate at about 0.1-2%.
Claims9
A low-phosphorus lubricating composition having less than 600 ppm phosphorus, comprising at least 85 weight % of a lubricating base blend, and an additive comprising the following, as a weight % of the total composition:
- (1) a tungsten source at an amount which provides about 0.1 to 1400 ppm W;
- (2) an alkylated diphenylamine at about 0.1-2%;
- and
- (3) a zinc dithiocarbamate at about 0.1-2%.
Dependencies are inferred from the claim text.