| 摘要 |
PROBLEM TO BE SOLVED: To provide electrophoretic media. SOLUTION: In electrophoretic media, it is advantageous to use pigment particles having 1 to 15 per cent by weight of a polymer chemically bonded to, or cross-linked around, the pigment particles. The polymer desirably has a branched chain structure with side chains extending from a main chain. Charged or chargeable groups can be incorporated into the polymer or can be bonded to the particles separately from the polymer. The polymer-coated particles can be prepared by first attaching a polymerizable or polymerization-initiating group to the particle and then reacting the particle with one or more polymerizable monomers or oligomers. COPYRIGHT: (C)2009,JPO&INPIT
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