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Title:
ELECTROPHORESIS PARTICLE AND METHOD FOR MANUFACTURING THE SAME, AND ELECTROPHORESIS DISPLAY ELEMENT USING THE SAME
Document Type and Number:
Japanese Patent JP2004233630
Kind Code:
A
Abstract:

To provide electrophoresis particles which exhibit an electrostatic property and dispersibility even when no static charging agent and dispersing agent are added to the electrophoresis particles and a method for manufacturing the same.

The electrophoresis particles are constructed by fixing at least an amphiphilic residue originating from a reactive surfactant to the surfaces of pigment particles, pigment coated polymer particles or polymer particles colored with a dye. Here, the reactive functional group of the reactive surfactant is an unsaturated hydrocarbon group, its hydrophobic part is a 4-30C aliphatic hydrocarbon chain, and its hydrophilic part is an ionic functional group. Further, the method for manufacturing the electrophoresis particles includes a step to make the particle surface adsorb at least the reactive surfactant and a step to fix the amphiphilic residue originating from the reactive surfactant to the particle surface with a chemical reaction of the reactive functional group possessed by the reactive surfactant.


Inventors:
MINAMI MASATO
Application Number:
JP2003021741A
Publication Date:
August 19, 2004
Filing Date:
January 30, 2003
Export Citation:
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Assignee:
CANON KK
International Classes:
C08F292/00; G02F1/167; G03G9/12; G03G9/125; G03G9/135; (IPC1-7): G02F1/167
Attorney, Agent or Firm:
Tokuhiro Watanabe