EP 0863965 A1 19980916 - ANTINOXIDANT SLUDGE CONTROL ADDITIVES
Title (en)
ANTINOXIDANT SLUDGE CONTROL ADDITIVES
Title (de)
ANTIOXIDATIONSZUSATZE ZUR KONTROLLE VON SCHLAMMBILDUNG
Title (fr)
ADDITIFS ANTINOXYDANTS DE TRAITEMENT DE DEPOT DE BOUE ET D'IMPURETES
Publication
Application
Priority
- US 9617507 W 19961030
- US 55107695 A 19951031
Abstract (en)
[origin: WO9716510A1] The invention relates to a process for mitigating NOx-induced sludge formation in engine oils by dissolving in an engine oil of lubricating viscosity an effective amount of a molecule having at least one head portion enriched in NOx reactive carbon-carbon unsaturation and at least one oil soluble hydrocarbyl, preferably aliphatic, tail portion having an absence of carbon-carbon unsaturation of suitable chain length in an optimum ratio of head to tail sufficient to reduce NOx-induced sludge formation in the engine oil. The invention also relates to formulated lube oil compositions containing the antinoxidant additive. The molecules include polyethylene propylene copolymer- and polyisobutylene-grafted hydroquinone polyalkylthiophenes, fullerene-grafted lube oil basestock, ethylene propylene polymer-grafted phenol and ethylene butylene polymer-grafted phenol.
IPC 1-7
IPC 8 full level
C10M 129/91 (2006.01); C10M 135/34 (2006.01); C10N 30/00 (2006.01); C10N 30/10 (2006.01); C10N 40/25 (2006.01)
CPC (source: EP)
C10M 129/91 (2013.01); C10M 135/34 (2013.01); C08G 2261/1412 (2013.01); C08G 2261/3223 (2013.01); C10M 2207/026 (2013.01); C10M 2209/00 (2013.01); C10M 2209/02 (2013.01); C10M 2209/10 (2013.01); C10M 2221/00 (2013.01)
Designated contracting state (EPC)
BE DE ES FR GB IT NL
DOCDB simple family (publication)
WO 9716510 A1 19970509; AU 717669 B2 20000330; AU 7529696 A 19970522; CA 2233210 A1 19970509; EP 0863965 A1 19980916; EP 0863965 A4 19990210; JP H11515053 A 19991221
DOCDB simple family (application)
US 9617507 W 19961030; AU 7529696 A 19961030; CA 2233210 A 19961030; EP 96937847 A 19961030; JP 51756697 A 19961030