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

Patent · Tue May 26 00:00:00 EDT 1987

OSTI ID:6529522

Yamaguchi, E S; Cerrito, E; Liston, T V

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
• Resource Relation: Patent File Date: Filed date 30 Sep 1983
• Country of Publication: United States
• Language: English

Related Subjects

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