Title (en)

Lubricating oil composition.

Title (de)

Schmierölzusammensetzung.

Title (fr)

Composition d'huile lubrifiante.

Publication

EP 0407124 A1 19910109 (EN)

Application

EP 90307209 A 19900702

Priority

• JP 17425989 A 19890707
• JP 17426089 A 19890707
• JP 17426189 A 19890707
• JP 17426289 A 19890707

Abstract (en)

A lubricating oil composition prepared by incorporating a phosphoric acid ester, phosphorous acid ester, phosphoric acid ester amine salt or phosphorous acid ester amine salt and an aliphatic dicarboxylic acid compound into a base oil, or further incorporating an alkylamine compound and/or succinimide or perbasic magnesium or calcium sulfonate. This lubricating oil composition has excellent characteristics such that the change of the friction coefficient with the lapse of time is small and the friction coefficient is stable, and the change of the friction coefficient by the change of the oil temperature is small. This lubricating oil composition is especially valuable as a lubricating oil for an automatic transmission of an automobile.

IPC 1-7

C10M 141/10; C10M 163/00; C10M 169/04

IPC 8 full level

C10M 141/10 (2006.01); C10M 163/00 (2006.01); C10M 169/04 (2006.01)

CPC (source: EP)

C10M 101/02 (2013.01); C10M 129/42 (2013.01); C10M 129/76 (2013.01); C10M 133/04 (2013.01); C10M 133/56 (2013.01); C10M 135/24 (2013.01); C10M 137/02 (2013.01); C10M 137/04 (2013.01); C10M 137/08 (2013.01); C10M 141/10 (2013.01); C10M 159/24 (2013.01); C10M 163/00 (2013.01); C10M 169/04 (2013.01); C10M 169/045 (2013.01); C10M 2203/1006 (2013.01); C10M 2203/1025 (2013.01); C10M 2203/1045 (2013.01); C10M 2203/1065 (2013.01); C10M 2203/1085 (2013.01); C10M 2207/021 (2013.01); C10M 2207/123 (2013.01); C10M 2207/125 (2013.01); C10M 2207/127 (2013.01); C10M 2207/129 (2013.01); C10M 2207/22 (2013.01); C10M 2207/287 (2013.01); C10M 2207/288 (2013.01); C10M 2207/289 (2013.01); C10M 2215/02 (2013.01); C10M 2215/04 (2013.01); C10M 2215/042 (2013.01); C10M 2215/086 (2013.01); C10M 2215/26 (2013.01); C10M 2215/28 (2013.01); C10M 2217/046 (2013.01); C10M 2217/06 (2013.01); C10M 2219/046 (2013.01); C10M 2219/084 (2013.01); C10M 2223/02 (2013.01); C10M 2223/04 (2013.01); C10M 2223/041 (2013.01); C10M 2223/042 (2013.01); C10M 2223/043 (2013.01); C10M 2223/045 (2013.01); C10M 2223/049 (2013.01); C10M 2223/10 (2013.01); C10N 2010/04 (2013.01); C10N 2040/04 (2013.01); C10N 2040/042 (2020.05); C10N 2040/044 (2020.05); C10N 2040/046 (2020.05); C10N 2040/08 (2013.01)

Citation (search report)

• [X] DE 2044257 A1 19710318
• [X] GB 1180389 A 19700204 - BRITISH PETROLEUM CO [GB]
• [X] GB 1180388 A 19700204 - BRITISH PETROLEUM CO [GB]
• [X] FR 2547311 A1 19841214 - KAO CORP [JP]
• [Y] US 2285853 A 19420609 - BAXTER DOWNING FREDERICK, et al
• [Y] GB 1302894 A 19730110
• [Y] GB 1009197 A 19651110 - LUBRIZOL CORP
• [YD] GB 2182948 A 19870528 - NIPPON OIL CO LTD
• [YD] EP 0286996 A2 19881019 - IDEMITSU KOSAN CO [JP]
• [A] FR 1336422 A 19630830 - RES LTD
• [A] GB 1236740 A 19710623 - GEIGY UK LTD

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0407124 A1 19910109

DOCDB simple family (application)

EP 90307209 A 19900702