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U.S. Department of Energy
Office of Scientific and Technical Information

Lubricant composition containing a mixture of neutralized phosphates

Patent ·
OSTI ID:5837331

A lubricating oil additive is described comprising a mixture of phosphates, the phosphates being essentially free of monothiophosphates and comprising: (a) dihydrocarbyl hydrogen dithiophosphates; and (b) a sulfur-free mixture of hydrocarbyl dihydrogen phosphates and dihydrocarbyl hydrogen phosphates, the composition being at least 50% neutralized by a hydrocarbyl amine having 10 to 30 carbons in the hydrocarbyl group.

Assignee:
Chevron Res. Co., San Francisco, CA
Patent Number(s):
US 4575431
OSTI ID:
5837331
Country of Publication:
United States
Language:
English