EP 2725088 A1 20140430 - LUBRICATING OIL COMPOSITION
Title (en)
LUBRICATING OIL COMPOSITION
Title (de)
SCHMIERÖLZUSAMMENSETZUNG
Title (fr)
COMPOSITION D'HUILE LUBRIFIANTE
Publication
Application
Priority
- JP 2011137140 A 20110621
- JP 2012051220 W 20120120
Abstract (en)
The present invention provides a lubricating oil composition having excellent oxidation stability, suitable as a lubricating oil for internal combustion engines and automatic transmissions, particularly internal combustion engines. The lubricating oil composition comprises a lubricating base oil and one or more type of phosphorus compound represented by formula (1) below as Component (A), the element ratio of sulfur derived from the compound of formula (1) to phosphorus in the oil (S/P molar ratio) being from 0.05 to 0.8 and the amount of phosphorus derived from Component (A) in the oil being from 0.01 to 0.5 percent by mass (in formula 1, R 1 through R 4 are each a hydrocarbon group with 1 to 30 carbon atoms or an alkylthioethyl group having an alkyl or alkenyl group with 1 to 30 carbon atoms and may be the same or different from one another, X 1 to X 4 are each independently sulfur or oxygen, and Y represents a metal element).
IPC 8 full level
C10M 141/10 (2006.01); C10M 133/12 (2006.01); C10M 137/04 (2006.01); C10M 137/06 (2006.01); C10M 137/10 (2006.01); C10N 10/04 (2006.01); C10N 10/12 (2006.01); C10N 30/10 (2006.01); C10N 40/04 (2006.01); C10N 40/25 (2006.01)
CPC (source: EP US)
C10M 137/06 (2013.01 - EP US); C10M 137/10 (2013.01 - EP US); C10M 141/10 (2013.01 - EP US); C10M 2203/1006 (2013.01 - EP US); C10M 2203/1025 (2013.01 - EP US); C10M 2207/262 (2013.01 - EP US); C10M 2215/064 (2013.01 - EP US); C10M 2215/28 (2013.01 - EP US); C10M 2223/042 (2013.01 - EP US); C10M 2223/045 (2013.01 - EP US); C10N 2010/04 (2013.01 - EP US); C10N 2010/12 (2013.01 - EP US); C10N 2030/10 (2013.01 - EP US); C10N 2030/12 (2013.01 - EP US); C10N 2030/40 (2020.05 - EP US); C10N 2030/42 (2020.05 - EP US); C10N 2030/43 (2020.05 - EP US); C10N 2040/042 (2020.05 - EP US); C10N 2040/25 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2725088 A1 20140430; EP 2725088 A4 20150506; CN 103620006 A 20140305; CN 103620006 B 20151202; JP 2013001884 A 20130107; JP 5756353 B2 20150729; US 2014113845 A1 20140424; WO 2012176484 A1 20121227
DOCDB simple family (application)
EP 12802100 A 20120120; CN 201280030596 A 20120120; JP 2011137140 A 20110621; JP 2012051220 W 20120120; US 201214124333 A 20120120