EP 0201827 A3 19871007 - ELECTROVISCOUS FLUIDS
Title (en)
ELECTROVISCOUS FLUIDS
Publication
Application
Priority
DE 3517281 A 19850514
Abstract (en)
[origin: US4668417A] An electroviscous fluid comprising more than 25% by weight of silica gel with a water content of 1 to 15% by weight, a non-conductive oily phase dispersion medium, 1 to 30% by weight of one or more polymers soluble in the dispersion medium, the weight percentage being based on the water-containing silica gel, and the polymers having a molecular weight in the range of from 5x103 to 106 and containing 0.1 to 10% by weight of N and/or OH and 25 to 83% by weight of C4 to C24-alkyl groups. Such electroviscous fluids are useful for transmitting powerful forces by means of a low electronic output, for example, in hydraulic valves and shock absorbers.
IPC 1-7
IPC 8 full level
C09K 23/52 (2022.01); B01J 13/00 (2006.01); C08K 3/00 (2006.01); C08K 3/34 (2006.01); C08K 3/36 (2006.01); C08L 101/02 (2006.01); C10M 161/00 (2006.01); C10M 169/04 (2006.01); C10M 171/00 (2006.01); C10N 20/04 (2006.01); C10N 30/04 (2006.01); C10N 40/14 (2006.01)
CPC (source: EP US)
C10M 125/26 (2013.01 - EP US); C10M 143/10 (2013.01 - EP US); C10M 143/12 (2013.01 - EP US); C10M 145/02 (2013.01 - EP US); C10M 149/02 (2013.01 - EP US); C10M 161/00 (2013.01 - EP US); C10M 171/001 (2013.01 - EP US); C10M 2201/087 (2013.01 - EP US); C10M 2201/10 (2013.01 - EP US); C10M 2201/102 (2013.01 - EP US); C10M 2201/105 (2013.01 - EP US); C10M 2205/04 (2013.01 - EP US); C10M 2205/06 (2013.01 - EP US); C10M 2207/289 (2013.01 - EP US); C10M 2209/02 (2013.01 - EP US); C10M 2215/22 (2013.01 - EP US); C10M 2215/221 (2013.01 - EP US); C10M 2215/225 (2013.01 - EP US); C10M 2215/226 (2013.01 - EP US); C10M 2215/30 (2013.01 - EP US); C10M 2217/02 (2013.01 - EP US); C10M 2217/022 (2013.01 - EP US); C10M 2217/023 (2013.01 - EP US); C10M 2217/024 (2013.01 - EP US); C10M 2217/026 (2013.01 - EP US); C10M 2217/028 (2013.01 - EP US); C10M 2217/06 (2013.01 - EP US); C10N 2040/14 (2013.01 - EP US); C10N 2040/16 (2013.01 - EP US); C10N 2040/17 (2020.05 - EP US); C10N 2040/175 (2020.05 - EP US); C10N 2040/18 (2013.01 - EP US); C10N 2040/185 (2020.05 - EP US)
Citation (search report)
- [A] US 3047507 A 19620731 - WINSLOW WILLIS M
- [A] US 3397147 A 19680813 - MARTINEK THOMAS W
- [A] EP 0082574 A2 19830629 - SHELL INT RESEARCH [NL]
- [A] DE 1644951 A1 19710513 - SHELL INT RESEARCH
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0201827 A2 19861120; EP 0201827 A3 19871007; EP 0201827 B1 19891108; BR 8602157 A 19870113; DE 3517281 A1 19861120; DE 3666835 D1 19891214; JP H0710993 B2 19950208; JP S61259752 A 19861118; US 4668417 A 19870526
DOCDB simple family (application)
EP 86106109 A 19860505; BR 8602157 A 19860513; DE 3517281 A 19850514; DE 3666835 T 19860505; JP 10688486 A 19860512; US 85587386 A 19860424