EP 0436872 A2 19910717 - Mineral oil based transmission fluid.
Title (en)
Mineral oil based transmission fluid.
Title (de)
Kraftübertragungsflüssigkeit auf Basis Mineralöl.
Title (fr)
Fluide de transmission de puissance à base d'huile minérale.
Publication
Application
Priority
DE 4000753 A 19900112
Abstract (en)
Hydraulic fluids, predominantly for hydrokinetic drives, also called automatic transmission fluids (ATF), are based on mineral oil, the base oil being a paraffin-based oil raffinate having viscosities of about 4 mm<2>s<-1> at 100 DEG C, with additives necessary for this application, with the exclusion of polyisobutylene-based dispersants, having been added thereto, and are formulated in such a way that they have Brookfield viscosities from less than 30,000 to less than 20,000 mPas at -40 DEG C. The decrease in viscosity at low temperatures is made possible by replacing the polyisobutylene-based dispersant by a dispersant based on polyalkyl (meth)acrylate.
Abstract (de)
Hydraulikflüssigkeiten, vorviegend für den hydrokinetischen Antrieb, auch Automatic Transmission Fluids (ATF) genannt, auf Basis Mineralöl, wobei das Grundöl ein paraffinbasisches ölraffinat mit Viskositäten bei 100°C von ca. 4 mm²s<->¹ ist, und dem für diesen Verwendungszweck notwendige Additive, unter Ausschluß von Dispergiermitteln auf Polyisobutylenbasis, zugesetzt sind, und die so formuliert, bei -40°C, Brookfield-Viskositäten unter 30.000 bis unter 20.000 mPas aufweisen. Die Viskositätssenkung bei tiefen Temperaturen wird durch Ersatz des Dispergiermittels auf Polyisobutylenbasis durch ein solches auf Polyalkyl(meth)acrylatbasis möglich.
IPC 1-7
C10M 145/14; C10M 149/02; C10M 169/04; C10N 20/04; C10N 30/04; C10N 40/04
IPC 8 full level
C10M 145/14 (2006.01); C10M 149/02 (2006.01); C10M 169/04 (2006.01); C10N 20/02 (2006.01); C10N 20/04 (2006.01); C10N 30/02 (2006.01); C10N 30/04 (2006.01); C10N 40/08 (2006.01)
CPC (source: EP)
C10M 101/02 (2013.01); C10M 145/14 (2013.01); C10M 149/02 (2013.01); C10M 169/04 (2013.01); C10M 169/041 (2013.01); C10M 2203/10 (2013.01); C10M 2203/1006 (2013.01); C10M 2203/102 (2013.01); C10M 2203/1025 (2013.01); C10M 2203/1045 (2013.01); C10M 2203/1065 (2013.01); C10M 2203/1085 (2013.01); C10M 2209/084 (2013.01); C10M 2217/02 (2013.01); C10M 2217/023 (2013.01); C10M 2217/024 (2013.01); C10M 2217/028 (2013.01); C10M 2217/06 (2013.01); C10N 2040/08 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0436872 A2 19910717; EP 0436872 A3 19910911; EP 0436872 B1 19930901; AT E93886 T1 19930915; DE 4000753 A1 19910718; DE 59002561 D1 19931007; JP 2968347 B2 19991025; JP H04270796 A 19920928
DOCDB simple family (application)
EP 90124345 A 19901215; AT 90124345 T 19901215; DE 4000753 A 19900112; DE 59002561 T 19901215; JP 116791 A 19910109