EP 0703959 B1 20021016 - A METHOD OF REDUCING SLUDGE AND VARNISH PRECURSORS IN LUBRICATING OILS
Title (en)
A METHOD OF REDUCING SLUDGE AND VARNISH PRECURSORS IN LUBRICATING OILS
Title (de)
VERFAHREN ZUR VERMINDERUNG DES GEHALTES AN VORLAUFERVERBINDUNGEN VON SCHLAMM UNDLACK IN SCHMIEROLEN
Title (fr)
PROCEDE DE REDUCTION DES PRECURSEURS DE BOUE ET DE GOMME DANS DES HUILES LUBRIFIANTES
Publication
Application
Priority
- US 9404262 W 19940419
- US 4921093 A 19930419
Abstract (en)
[origin: WO9424237A1] A method, composition and filter for reducing the presence of sludge or varnish precursors in a lubricating oil circulating within an internal combustion engine. The lubricating oil containing sludge or varnish precursors is contacted with discrete particles of an oil insoluble, oil wettable compound having an antioxidant functional group and/or a dispersant functional group, which are capable of complexing with sludge or varnish precursors. Preferably the compounds comprise a crosslinked amine having ethylene amine functionality.
IPC 1-7
IPC 8 full level
C10M 149/22 (2006.01); C10M 171/06 (2006.01); C10M 175/00 (2006.01)
CPC (source: EP)
C10M 149/22 (2013.01); C10M 171/06 (2013.01); C10M 175/0091 (2013.01); C10M 2215/04 (2013.01); C10M 2215/26 (2013.01); C10M 2217/046 (2013.01); C10M 2217/06 (2013.01); C10N 2040/25 (2013.01); C10N 2040/251 (2020.05); C10N 2040/255 (2020.05); C10N 2040/28 (2013.01)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
WO 9424237 A1 19941027; CA 2160778 A1 19941027; CA 2160778 C 20070417; DE 69431560 D1 20021121; DE 69431560 T2 20030814; EP 0703959 A1 19960403; EP 0703959 B1 20021016; JP H08508773 A 19960917
DOCDB simple family (application)
US 9404262 W 19940419; CA 2160778 A 19940419; DE 69431560 T 19940419; EP 94914211 A 19940419; JP 52252694 A 19940419