EP 1803797 A2 20070704 - Use of a lubricating oil composition for improving the acrylic rubber sealant compatability in an internal combustion engine
Title (en)
Use of a lubricating oil composition for improving the acrylic rubber sealant compatability in an internal combustion engine
Title (de)
Verwendung einer Schmiermittelzusammensetzung zur Erhöhung der Acrylkautschukdichtungskompatibilität bei einem Verbrennungsmotor
Title (fr)
Utilisation d'une composition lubrifiante pour améliorer la compatibilité d'un matériau d'étanchéité en caoutchouc acrylique dans un moteur à combustion interne
Publication
Application
Priority
JP 2005375974 A 20051227
Abstract (en)
It has been discovered that a lubricating oil composition containing a certain combination of a nitrogen-containing dispersant and a metal-containing detergent of an alkali metal salt of alkylphenol derivative having a Mannich base structure, together with a phosphorus-containing organic compound, can be effectively employed in a method for improving the acrylic rubber sealant compatibility in an internal combustion engine, if the ratio of the nitrogen-containing dispersant and a metal-containing detergent of an alkali metal salt of alkylphenol derivative having a Mannich base structure is adjusted to a specific range, i.e., in the range of from 1:0.005 to 1:2 in terms of the nitrogen content.
IPC 8 full level
C10M 159/16 (2006.01); C10M 163/00 (2006.01); C10N 40/25 (2006.01)
CPC (source: EP US)
C10M 163/00 (2013.01 - EP US); C10M 2201/087 (2013.01 - EP US); C10M 2205/024 (2013.01 - EP US); C10M 2207/028 (2013.01 - EP US); C10M 2209/084 (2013.01 - EP US); C10M 2215/062 (2013.01 - EP US); C10M 2215/064 (2013.01 - EP US); C10M 2215/28 (2013.01 - EP US); C10M 2217/043 (2013.01 - EP US); C10M 2219/02 (2013.01 - EP US); C10M 2219/046 (2013.01 - EP US); C10M 2223/045 (2013.01 - EP US); C10M 2227/06 (2013.01 - EP US); C10N 2010/12 (2013.01 - EP US); C10N 2030/36 (2020.05 - EP US); C10N 2040/25 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB NL
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
EP 1803797 A2 20070704; EP 1803797 A3 20100728; EP 1803797 B1 20141203; CA 2572041 A1 20070627; CA 2572041 C 20150217; JP 2007177052 A 20070712; JP 4955998 B2 20120620; SG 133568 A1 20070730; US 2007184992 A1 20070809
DOCDB simple family (application)
EP 06256586 A 20061227; CA 2572041 A 20061222; JP 2005375974 A 20051227; SG 2006089841 A 20061222; US 61396106 A 20061220