Title:
潤滑油組成物
Document Type and Number:
Japanese Patent JP5517531
Kind Code:
B2
Abstract:
A lubricating oil composition having a phosphorus concentration, expressed as atoms of phosphorus, of not greater than 0.09 mass %, based on the total mass of the composition, the lubricating oil composition comprising (A) an oil of lubricating viscosity in a major amount; and, (B) as an additive component in a minor amount, an oil-soluble zinc salt of a dithiophosphoric acid, the dithiophosphoric acid being the reaction product of phosphorus pentasulphide with a mixture of at least one first alcohol of the formula ROH where R is an aliphatic hydrocarbyl group having at least four carbon atoms or is an alkaryl group, and at least one second alcohol which is an ester of a polyhydric alcohol.
Inventors:
Mark David Andrews
Benjamin Robert Elvidge
Benjamin Robert Elvidge
Application Number:
JP2009204771A
Publication Date:
June 11, 2014
Filing Date:
September 04, 2009
Export Citation:
Assignee:
Infineum International Limited
International Classes:
C10M137/10; C10M163/00; C10M159/22; C10N10/02; C10N10/04; C10N30/00; C10N40/25
Domestic Patent References:
| JP2005529218A |
Foreign References:
| EP0322235A2 |
Attorney, Agent or Firm:
Sadao Kumakura
Nobuo Ogawa
Atsushi Hakoda
Kenji Asai
Kazuo Yamazaki
Nobuo Ogawa
Atsushi Hakoda
Kenji Asai
Kazuo Yamazaki