EP 0412271 B1 19930811 - HYDRAULIC FLUIDS
Title (en)
HYDRAULIC FLUIDS
Publication
Application
Priority
DE 3926397 A 19890810
Abstract (en)
[origin: EP0412271A1] The invention relates to aqueous hydraulic fluids of low flammability, which are environmentally acceptable and have lubricating properties. Known hydraulic fluids based on oil-in-water emulsions (HFA) are metastable systems, so that temperature fluctuations and electrolytes have a critical effect on the system. In the case of systems thickened by polymers, the shear stability is inadequate. In HFC fluids, high use concentrations are necessary to produce a minimum viscosity. The novel hydraulic fluids are intended not to show these disadvantages. For this purpose, aqueous hydraulic fluids are proposed which contain 5 - 30 % by weight of an alkyl polyglycoside and up to 20 % by weight of surfactant-type additives and also up to 10 % by weight of other conventional additives. These novel hydraulic fluids have advantageous lubricating activities at a low active compound concentration.
IPC 1-7
IPC 8 full level
C10M 173/02 (2006.01)
CPC (source: EP)
C10M 129/08 (2013.01); C10M 129/16 (2013.01); C10M 129/40 (2013.01); C10M 133/04 (2013.01); C10M 133/08 (2013.01); C10M 133/20 (2013.01); C10M 135/08 (2013.01); C10M 135/10 (2013.01); C10M 145/28 (2013.01); C10M 145/30 (2013.01); C10M 145/36 (2013.01); C10M 145/40 (2013.01); C10M 153/04 (2013.01); C10M 155/02 (2013.01); C10M 173/02 (2013.01); C10M 2201/02 (2013.01); C10M 2201/08 (2013.01); C10M 2201/081 (2013.01); C10M 2201/082 (2013.01); C10M 2201/084 (2013.01); C10M 2207/022 (2013.01); C10M 2207/023 (2013.01); C10M 2207/04 (2013.01); C10M 2207/046 (2013.01); C10M 2207/125 (2013.01); C10M 2207/126 (2013.01); C10M 2207/128 (2013.01); C10M 2207/129 (2013.01); C10M 2209/104 (2013.01); C10M 2209/105 (2013.01); C10M 2209/108 (2013.01); C10M 2209/12 (2013.01); C10M 2215/02 (2013.01); C10M 2215/042 (2013.01); C10M 2215/102 (2013.01); C10M 2215/16 (2013.01); C10M 2215/22 (2013.01); C10M 2215/221 (2013.01); C10M 2215/225 (2013.01); C10M 2215/226 (2013.01); C10M 2215/30 (2013.01); C10M 2219/04 (2013.01); C10M 2219/042 (2013.01); C10M 2219/044 (2013.01); C10M 2223/04 (2013.01); C10M 2223/042 (2013.01); C10M 2225/00 (2013.01); C10M 2225/02 (2013.01); C10M 2225/04 (2013.01); C10M 2225/041 (2013.01); C10M 2227/061 (2013.01); C10M 2229/02 (2013.01); C10M 2229/04 (2013.01); C10M 2229/041 (2013.01); C10M 2229/042 (2013.01); C10M 2229/043 (2013.01); C10M 2229/044 (2013.01); C10M 2229/045 (2013.01); C10M 2229/046 (2013.01); C10M 2229/047 (2013.01); C10M 2229/048 (2013.01); C10M 2229/05 (2013.01); C10M 2229/051 (2013.01); C10M 2229/052 (2013.01); C10M 2229/053 (2013.01); C10M 2229/054 (2013.01); C10N 2040/08 (2013.01); C10N 2050/01 (2020.05)
Designated contracting state (EPC)
BE DE FR GB IT
DOCDB simple family (publication)
EP 0412271 A1 19910213; EP 0412271 B1 19930811; CA 2022914 A1 19910211; DE 3926397 A1 19910214; DE 59002288 D1 19930916
DOCDB simple family (application)
EP 90112004 A 19900625; CA 2022914 A 19900808; DE 3926397 A 19890810; DE 59002288 T 19900625