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Lubricating oil compositions containing overbased calcium sulfonates and metal salts of alkyl catechol dithiophosphoric acid

Patent ·
OSTI ID:6529522
; ;

This patent describes a lubricating oil composition containing an overbased calcium hydrocarbyl sulfonate. The improvement wherein the lubricating oil composition additionally comprises an effective amount to reduce wear of a metal salt of an alkyl catechol dithiophosphoric acid ester of the formula: wherein R is alkyl containing 10 to 18 carbon atoms, or mixtures thereof, M is an alkali or alkaline earth metal or transition metal and n corresponds to the valence of the metal M.

Assignee:
Chevron Research Co., San Francisco, CA
Patent Number(s):
US 4668409
OSTI ID:
6529522
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020500* -- Petroleum-- Products & By-Products
023000 -- Petroleum-- Properties & Composition
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALKYL RADICALS
AROMATICS
CALCIUM COMPOUNDS
CARBON
CHEMICAL COMPOSITION
DEVELOPERS
ELEMENTS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC ACIDS
LUBRICANTS
LUBRICATING OILS
LUBRICATING PROPERTIES
MECHANICAL PROPERTIES
NONMETALS
OILS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PHENOLS
PHOSPHORIC ACID
PHYSICAL PROPERTIES
POLYPHENOLS
PYROCATECHOL
QUANTITY RATIO
RADICALS
SULFONATES
TRANSITION ELEMENT COMPOUNDS
WEAR RESISTANCE