EP 1019466 A1 20000719 - POLYALKYLENE SUCCINIMIDE COMPOSITION USEFUL IN INTERNAL COMBUSTION ENGINES

Title (en)

POLYALKYLENE SUCCINIMIDE COMPOSITION USEFUL IN INTERNAL COMBUSTION ENGINES

Title (de)

POLYALKYLENSUCCINIMID-ZUSAMMENSETZUNG FÜR BRENNKRAFTMASCHINEN

Title (fr)

COMPOSITION A BASE DE POLYALKYLENE SUCCINIMIDE DESTINEE AUX MOTEURS A COMBUSTION INTERNE

Publication

EP 1019466 A1 20000719 (EN)

Application

EP 98949715 A 19980930

Priority

JP 28466697 A 19971001
US 9820715 W 19980930
US 1580198 A 19980129

Abstract (en)

[origin: WO9916852A1] A lubricating oil composition for internal combustion engines is preferably composed of a major portion of a base oil; 0.5 % to 15 % of a cyclic carbonate-treated polyalkylene succinimide additive; 0.5 % to 15 % of a borated polyalkylene succinimide additive; 0.5 % to 20 % of a metal-containing detergent; and 0.1 % to 3 % of a zinc dialkyldithiophosphate, other additives such as a molybdenum compound, an oxidation inhibitor and a viscosity index improver can be added. The molecular weight of the polyalkylenes from which the carbonated polyalkylene succinimide is derived is preferably at least 300 greater than the molecular weight of the polyalkylenes from which the borated polyalkylene succinimide is derived.

IPC 1-7

C10M 141/12; C10M 133/56

IPC 8 full level

C08F 8/00 (2006.01); C10M 133/56 (2006.01); C10M 141/10 (2006.01); C10M 163/00 (2006.01)

CPC (source: EP)

Citation (search report)

See references of WO 9916852A1

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

WO 9916852 A1 19990408; CA 2305637 A1 19990408; EP 1019466 A1 20000719

DOCDB simple family (application)

US 9820715 W 19980930; CA 2305637 A 19980930; EP 98949715 A 19980930