Title:
潤滑油組成物
Document Type and Number:
Japanese Patent JP2012512308
Kind Code:
A
Abstract:
A lubricating oil composition having a sulfur content of up to about 0.4 wt. % and a sulfated ash content of up to about 0.5 wt. % as determined by ASTM D874 is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; (b) at least one oil-soluble or dispersed oil-stable boron-containing compound having greater than 400 ppm of boron, based upon the total mass of the composition; and (c) at least one oil-soluble or dispersed oil-stable molybdenum-containing compound having at least about 1100 ppm of molybdenum, based upon the total mass of the composition; wherein the lubricating oil composition has a ratio of sulfur to molybdenum of less than or equal to about 4:1.
Inventors:
Kenneth Dee Nelson
Alexander Be Boffa
William M. Cryser
Stefan Dee Starz
James A. McGean
Wim Van Dam
Richard E. Charpeck
Alexander Be Boffa
William M. Cryser
Stefan Dee Starz
James A. McGean
Wim Van Dam
Richard E. Charpeck
Application Number:
JP2011542259A
Publication Date:
May 31, 2012
Filing Date:
December 10, 2009
Export Citation:
Assignee:
Chevron Oronite Company LRC
International Classes:
C10M169/04; C10M101/02; C10M133/56; C10M139/00; C10N10/12; C10N30/04; C10N30/06; C10N30/10; C10N30/12; C10N40/25
Domestic Patent References:
| JPH08283762A | 1996-10-29 | |||
| JPH1046177A | 1998-02-17 | |||
| JPH06220475A | 1994-08-09 | |||
| JP2005516106A | 2005-06-02 | |||
| JP2007154196A | 2007-06-21 | |||
| JP2003155495A | 2003-05-30 | |||
| JP2005517798A | 2005-06-16 | |||
| JP2002053888A | 2002-02-19 | |||
| JP2004149762A | 2004-05-27 |
Attorney, Agent or Firm:
Yanagawa Yasuo