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Patent Searching and Data


Title:
LUBRICANT COMPOSITION FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2008/029756
Kind Code:
A1
Abstract:
Disclosed is a lubricant composition for internal combustion engines, which contains a base oil, (A) at least one compound selected from disulfide compounds represented by the following general formula (I): R1OOC-A1-S-S-A2-COOR2 (I) and disulfide compounds represented by the following general formula (II): R7OOC-CR9R10-CR11(COOR8)-S-S-CR16(COOR13)-CR14R15-COOR12 (II) , (B) an organic molybdenum compound and (C) a phenol antioxidant and/or an amine antioxidant. This lubricant composition is a low ash, lowphosphorus lubricant composition used for internal combustion engines such as gasoline engines, diesel engines and gas engines, which is improved in oxidation stability and friction reducing effect, while conforming to environmental regulations.

Inventors:
KAMANO, Hideki (24-4, Anesakikaigan Ichihara-sh, Chiba 07, 2990107, JP)
Application Number:
JP2007/067121
Publication Date:
March 13, 2008
Filing Date:
September 03, 2007
Export Citation:
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Assignee:
IDEMITSU KOSAN CO., LTD. (1-1 Marunouchi 3-chome, Chiyoda-ku Tokyo, 21, 1008321, JP)
出光興産株式会社 (〒21 東京都千代田区丸の内三丁目1番1号 Tokyo, 1008321, JP)
International Classes:
C10M135/26; C10M129/10; C10M133/12; C10M133/16; C10M137/10; C10M159/18; C10M159/20; C10M159/22; C10M159/24; C10N10/12; C10N20/00; C10N30/06; C10N30/10; C10N40/25
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (OHTANI PATENT OFFICE, Bridgestone Toranomon Bldg.6F. 25-2, Toranomon 3-chome, Minato-k, Tokyo 01, 1050001, JP)
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