Global Patent Index - EP 0393831 A1

EP 0393831 A1 19901024 - Electrorheological fluids.

Title (en)

Electrorheological fluids.

Title (de)

Elektrorheologische Flüssigkeiten.

Title (fr)

Fluides électrorhéologiques.

Publication

EP 0393831 A1 19901024 (EN)

Application

EP 90302712 A 19900314

Priority

  • GB 8906336 A 19890320
  • GB 8929065 A 19891222

Abstract (en)

An electrorheological fluid composition comprising a dispersion of an aluminosilicate in an electrically highly resistive fluid vehicle, characterised in that the aluminosilicate comprises a) a moiety of empirical formula (Al2O3)b (SiO2)c where b and c are any numerical values provided that the ratio of b/c lies in the range of 1:1 to 1:9, b) mono- or divalent main group metal cations, hydrogen ions or optionally substituted ammonium ions, and c) a non-aqueous polar adsorbate. eg a crystalline zeolite comprising a non-aqueous polar adsorbate, a particulate material for use as the disperse phase of an electrorheological fluid, which comprises such an aluminosilicate, and a process for the preparation of such a material. r

IPC 1-7

C10M 129/26; C10M 171/00; C10N 40/06; C10N 40/14; C10N 50/00

IPC 8 full level

C01B 33/40 (2006.01); C01B 33/42 (2006.01); C01B 33/44 (2006.01); C01B 39/00 (2006.01); C01B 39/04 (2006.01); C01B 39/14 (2006.01); C01B 39/22 (2006.01); C01B 39/24 (2006.01); C10M 125/26 (2006.01); C10M 171/00 (2006.01); C10N 10/02 (2006.01); C10N 10/04 (2006.01); C10N 10/06 (2006.01); C10N 40/14 (2006.01); C10N 60/00 (2006.01)

CPC (source: EP)

C10M 171/001 (2013.01); C10M 2201/102 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE ES FR GB IT LI NL SE

DOCDB simple family (publication)

EP 0393831 A1 19901024; JP H02292393 A 19901203

DOCDB simple family (application)

EP 90302712 A 19900314; JP 6854790 A 19900320