Electrorheological fluid composition containing inorganic/organic composite particles
US5736064A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1996 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | Apr 29, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M171/001
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An electrorheological fluid composition wherein inorganic/organic composite particles comprising a core 1 comprising organic polymeric compound and a shell 3 comprising inorganic microparticles 2 which are electrically semiconducting in a semiconducting region in which conductivity is within a range of 10.sup.3-10.sup.-11 .OMEGA..sup.-1 /cm at room temperature, are dispersed in an electrically insulating medium. These inorganic/organic composite particles are produced by means of a method in which the cores 1 and the shells 3 are simultaneously formed, and the surfaces thereof are preferably polished. An electrorheological fluid composition possessing electrorheological effects, having superior storage stability, capable of use over long periods, having little abrasiveness, which is not affected by environmental temperature or humidity, a current value of which is stable, and which has little power consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.