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Title:
潤滑油組成物
Document Type and Number:
Japanese Patent JP4994044
Kind Code:
B2
Abstract:
A lubricating oil composition favorably employable for trunk piston diesel engines contains an overbased sulfurized alkylphenol calcium salt, at least two (preferably three) overbased alkylsalicylic acid calcium salts having different base ratios and hydrocarbyl groups of different carbon atom numbers, a borated ashless dispersant, and a zinc dihydrocarbyldithiophosphate.

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Inventors:
Hiroyuki Nagamatsu
Application Number:
JP2007000690A
Publication Date:
August 08, 2012
Filing Date:
January 05, 2007
Export Citation:
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Assignee:
Chevron Japan Co., Ltd.
International Classes:
C10M163/00; C10M137/10; C10M139/00; C10M159/22; C10N10/04; C10N30/06; C10N40/25
Domestic Patent References:
JP2008296A
JP11061170A
JP10121081A
JP11080771A
Attorney, Agent or Firm:
Yanagawa Yasuo



 
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