Synergistic antioxidant lubricating oil additive composition
Patent
·
OSTI ID:5769797
Disclosed is a lubricating oil additive composition which imparts improved oxidation properties to internal combustion engine crankcase lubricants. The additive consists of: (1) an antioxidant selected from aromatic or alkyl sulfides and polysulfides, sulfurized olefins, sulfurized carboxylic acid esters and sulfurized ester-olefins, and (2) an oil-soluble chlorinated hydrocarbon containing at least 6 carbon atoms. Lubricating oil compositions containing this additive composition are also disclosed. Particularly preferred are compositions which also contain an oil-soluble zinc salt.
- Assignee:
- Chevron Research Co
- Patent Number(s):
- US 4200543
- OSTI ID:
- 5769797
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020500 -- Petroleum-- Products & By-Products
023000* -- Petroleum-- Properties & Composition
ADDITIVES
ANTIOXIDANTS
CARBOXYLIC ACID ESTERS
CHALCOGENIDES
CHEMICAL COMPOSITION
ESTERS
LUBRICANTS
LUBRICATING OILS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
SULFIDES
SULFUR COMPOUNDS
ZINC COMPOUNDS
020500 -- Petroleum-- Products & By-Products
023000* -- Petroleum-- Properties & Composition
ADDITIVES
ANTIOXIDANTS
CARBOXYLIC ACID ESTERS
CHALCOGENIDES
CHEMICAL COMPOSITION
ESTERS
LUBRICANTS
LUBRICATING OILS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
SULFIDES
SULFUR COMPOUNDS
ZINC COMPOUNDS