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US 5,037,563 AGranted
Aluminum complex grease and method of reducing the flammability of an aluminum complex grease
AssigneeExxon Research & Engineering Co.
InventorsHarry S. Pink, Heinrich J. Rohrhofer
Life of this patent
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Abstract
The flammability of an aluminum complex grease can be reduced by incorporating a flame retardant amount of calcium oxide into the grease provided the calcium oxide has a Loss on Ignition value of less than 3.0.
Claims15
A method for reducing the flammability of an aluminum complex grease which comprises adding above 4.0 wt % calcium oxide to the grease wherein the calcium oxide has an LOI value of less than 3.0.
A flame retardant grease composition comprising
- (a) a lubricating oil,
- (b) an aluminum complex thickener, and
- (c) a flame retardant amount of calcium oxide having an LOI value of less than 3.0.
A flame retardant grease composition comprising
- (a) a major amount of lubricating oil,
- (b) from about 1 to about 30% of an aluminum complex thickener, and
- (c) greater than 4.0 wt % of calcium oxide having a LOI value of less than 3.0.
Dependencies are inferred from the claim text.