Electric field responsive fluids
US4129513A · kind A · utility
30Cited by
8References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1977 |
| Grant date | Dec 12, 1978 |
| Priority date | — |
| Expiry date | Jan 21, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M171/001
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In a fluid composition which is capable of exhibiting a substantial increase in apparent viscosity under the influence of an electric field and which is of the type wherein solid particles of a chemical substance are dispersed in an electrically non-conducting oleaginous vehicle, superior performance results when the chemical substance is a polymer containing acid groups, the polymer having a density not exceeding 1.8 and a specified minimum water absorbency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.