Coating processes – Particles – flakes – or granules coated or encapsulated – Solid encapsulation process utilizing an emulsion or...
Patent
1986-03-21
1990-01-02
Barr, J. L.
Coating processes
Particles, flakes, or granules coated or encapsulated
Solid encapsulation process utilizing an emulsion or...
427216, 427221, 42840224, 252520, B32B 702, H01B 106
Patent
active
048912450
ABSTRACT:
A process for producing particles for use in electrophoretic displays, wherein a heavy, solid pigment preferred for its high contrast or refractive index properties is coated with a polymer starting material. The process significantly reduces the specific density of the resultant particle, and creates particles with smooth polymer surfaces that can be chosen for stability in a given electrophoretic carrier fluid, and possess acceptable electrophoretic characteristics.
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Barr J. L.
Koh-I-Noor Rapidograph, Inc.
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