Title:
潤滑油組成物
Document Type and Number:
Japanese Patent JP5638240
Kind Code:
B2
Abstract:
The lubricating oil composition contains a base oil, a phosphate ester derivative represented by a formula (1) below and a zinc compound. An element ratio (Zn/P) between zinc (Zn) and phosphorus (P) in the lubricating oil composition is 0.55 or more at a mole ratio.
In the formula, Y represents S (sulfur) or O (oxygen); R 1 represents an organic group having 4 to 24carbon atoms; R 2 represents a divalent organic group having 1 to 6 carbon atoms; and n represents an integer of 1 to 3.
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Inventors:
山崎 広隆
石川 元治
石川 元治
Application Number:
JP2009511917A
Publication Date:
December 10, 2014
Filing Date:
April 25, 2008
Export Citation:
Assignee:
出光興産株式会社
International Classes:
C10M169/04; C10M101/02; C10M125/04; C10M125/10; C10M125/18; C10M129/10; C10M129/54; C10M133/12; C10M137/10; C10M159/22
Domestic Patent References:
| JP2006063248A | 2006-03-09 | |||
| JP2004035620A | 2004-02-05 |
Attorney, Agent or Firm:
Bottom intellectual property office of patent business corporation Tatsuyuki