EP 1847585 A2 20071024 - Lubricant composition for automatic transmission
Title (en)
Lubricant composition for automatic transmission
Title (de)
Schmiermittelzusammensetzung für Automatikgetriebe
Title (fr)
Composition lubrifiante pour boîte de vitesse automatique
Publication
Application
Priority
JP 2006113516 A 20060417
Abstract (en)
The invention provides a lubricant composition for automatic transmissions excellent in sustainability of anti-shudder property, low-temperature viscosity characteristics, and oxidation stability, and excellent and well-balanced in durability of friction characteristics, energy-conserving performance, and anti-fatigue performance on gears. The composition contains a base oil having a kinematic viscosity at 100 °C of 3.7-4.1 mm 2 /s, and composed of base oil having the viscosityof 2.5-4.5 mm 2 /s, and base oil having the viscosity of 10-40 mm 2 /s; 1-20 mass% poly(meth)acrylate viscosity index improver having Mw of 15000-30000; 2-4 mass% imide friction modifier having a C8-C30 hydrocarbon group; 0.01-0.04 mass% phosphorus extreme pressure agent in terms of phosphorus; and 0.01-0.04 mass% ashless dispersant having at least one alkyl or alkenyl group of a number average molecular weight of ‰¥2000 in terms of nitrogen, all with respect to the total amount of the composition, and has the viscosity of 5.6-5.8 mm 2 /s.
IPC 8 full level
C10M 169/04 (2006.01); C10N 20/02 (2006.01); C10N 20/04 (2006.01); C10N 30/02 (2006.01); C10N 30/06 (2006.01); C10N 40/04 (2006.01)
CPC (source: EP KR US)
C10M 137/00 (2013.01 - KR); C10M 169/04 (2013.01 - EP KR US); C10M 171/02 (2013.01 - KR); C10M 2203/10 (2013.01 - EP US); C10M 2205/028 (2013.01 - EP US); C10M 2209/084 (2013.01 - EP US); C10M 2215/086 (2013.01 - EP US); C10M 2215/28 (2013.01 - EP US); C10M 2223/045 (2013.01 - EP US); C10M 2223/049 (2013.01 - EP US); C10N 2020/02 (2013.01 - EP US); C10N 2030/02 (2013.01 - EP US); C10N 2030/06 (2013.01 - EP US); C10N 2030/08 (2013.01 - EP US); C10N 2030/10 (2013.01 - EP US); C10N 2040/042 (2020.05 - EP US)
Citation (applicant)
JP 2002105478 A 20020410 - NIPPON MITSUBISHI OIL CORP
Designated contracting state (EPC)
FR GB
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
EP 1847585 A2 20071024; EP 1847585 A3 20081126; CN 101058761 A 20071024; JP 2007284564 A 20071101; JP 4142060 B2 20080827; KR 20070102958 A 20071022; US 2007270320 A1 20071122
DOCDB simple family (application)
EP 07251614 A 20070417; CN 200710101315 A 20070417; JP 2006113516 A 20060417; KR 20070037018 A 20070416; US 73581507 A 20070416