Capsules, materials for use therein and electrophoretic media and displays containing such capsules
US7202991B2 · kind B2 · utility
127Cited by
136References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2006 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Jan 30, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/22
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An encapsulation material, intended for use in encapsulated electrophoretic displays, comprises the coacervation product of a polyanionic polymer having a vinyl main chain and a plurality of anionic groups bonded to the main chain, with a cationic or zwitterionic water-soluble polymer capable of forming an immiscible second phase on contact with the polyanionic polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.