EP 1728848 B1 20130807 - Use of unsaturated olefin polymers to improve the compatibility between nitrile rubber seals and lubricating oil compositions
Title (en)
Use of unsaturated olefin polymers to improve the compatibility between nitrile rubber seals and lubricating oil compositions
Title (de)
Verwendung von ungesättigten Olefinpolymeren für die Kompatibilitätverbesserung zwischen Nitrilkautschukdichtungen und Schmierölzusammensetzungen
Title (fr)
Utilisation des polymères d'oléfines insaturées afin d'améliorer la compatibilité entre les joints en caoutchouc nitrile et des huiles lubrifiantes
Publication
Application
Priority
- EP 05270020 A 20050601
- EP 06112914 A 20060421
Abstract (en)
[origin: EP1728848A1] A method of improving the seal compatibility and/or copper corrosion performance of lubricating oil compositions for the lubrication of the crankcases of an internal combustion engine, which method includes the step of adding to the lubricating oil compositions a minor amount of a non-hydrogenated (unsaturated) olefin polymer. Also described are lubricating oil compositions for engines and transmissions, which compositions contain sulphur and/or a salicylate soap and a minor amount of a non-hydrogenated (unsaturated) polymer, which compositions are compatible with nitrile rubber engine and transmission seals and copper-containing engine and transmission components.
IPC 8 full level
C10M 161/00 (2006.01); C10M 165/00 (2006.01); C10M 167/00 (2006.01)
CPC (source: EP)
C10M 161/00 (2013.01); C10M 165/00 (2013.01); C10M 167/00 (2013.01); C10M 2205/026 (2013.01); C10M 2207/144 (2013.01); C10M 2207/262 (2013.01); C10M 2219/044 (2013.01); C10M 2219/046 (2013.01); C10M 2219/066 (2013.01); C10M 2219/068 (2013.01); C10M 2219/088 (2013.01); C10M 2219/089 (2013.01); C10M 2223/045 (2013.01); C10N 2010/02 (2013.01); C10N 2010/04 (2013.01); C10N 2010/12 (2013.01); C10N 2020/067 (2020.05); C10N 2030/12 (2013.01); C10N 2030/36 (2020.05); C10N 2030/42 (2020.05); C10N 2040/04 (2013.01); C10N 2040/252 (2020.05)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 06112914 A 20060421