EP 0396237 A1 19901107 - Electrorheological fluids.

Title (en)

Electrorheological fluids.

Title (de)

Elektrorheologische Flüssigkeiten.

Title (fr)

Fluides électrorhéologiques.

Publication

EP 0396237 A1 19901107 (EN)

Application

EP 90302713 A 19900314

Priority

GB 8906338 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, and b) mono- or divalent main group metal cations, hydrogen ions or optionally substituted ammonium ions, and optionally comprises water, eg a crystalline zeolite, 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.

IPC 1-7

C10M 125/26; C10M 171/00; C10N 40/06; C10N 40/14

IPC 8 full level

C10M 125/00 (2006.01); C01B 33/40 (2006.01); C01B 33/42 (2006.01); C01B 33/44 (2006.01); C01B 39/00 (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 125/26 (2013.01); C10M 171/001 (2013.01); C10M 2201/102 (2013.01)

Citation (search report)

[X] EP 0265252 A2 19880427 - UNIV MICHIGAN [US]
[X] EP 0219751 A2 19870429 - BAYER AG [DE]
[X] US 3367872 A 19680206 - MARTINEK THOMAS W, et al
[XP] EP 0313351 A2 19890426 - UNIV MICHIGAN [US]
[X] US 2882244 A 19590414 - MILTON ROBERT M
[X] CHEMICAL PATENT INDEX, BASIC ABSTRACTS JOURNAL, week 7408, 5th February 1974, classe CH, Acc. no. C75-V14775V/08, Derwent Publications Ltd, London, GB; & JP-B-74 005 117 (KAWASAKI HEAVY INDS.)

Designated contracting state (EPC)

AT BE CH DE ES FR GB IT LI NL SE

DOCDB simple family (publication)

EP 0396237 A1 19901107; JP H02284991 A 19901122

DOCDB simple family (application)

EP 90302713 A 19900314; JP 6854990 A 19900320