COMPOSITE POWDER OF SPHERICAL INORGANIC SUBSTANCE/RESIN AND ITS PRODUCTION

Japanese Patent JPS5927924

A

PURPOSE: A composite powder having a high functional property and capable of forming powder coatings, composite pigments, toners used in duplication, and moldings, prepared by uniformly coating the surfaces of spherical resin particles with fine inorganic powder.

CONSTITUTION: The titled powder comprising spherical inorganic resin composite particles, prepared by uniformly coating the surfaces of spherical resin particles, particle diameter of 1W3,000μm, with inorganic fine powder, particle diameter of 0.02W10μm. A high-functional property powder can be obtained by using conductive fine powder, strongly dielectric fine powder, ferromagnetic fine powder, fine pigment powder or the like as the inorganic fine powder. 1W20pts.wt. said inorganic fine powder is dispersed in 100pts.wt. hydrophobic vinyl monomer containing water and a polymerization initiator to obtain an oil-in-water emulsion in which the inorganic fine powder is present in the interface between the monomer phase (oil phase) and the water phase, and this emulsion is suspension-polymerized to form the titled composite particles.

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SENNA TAMOTSU
KUNO HIROSHI

JP13875282A

February 14, 1984

August 10, 1982

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KUNO HIROSHI
SENNA TAMOTSU
TODA KOGYO CORP
HITACHI CHEMICAL CO LTD

C08K3/00; B82B1/00; B82B3/00; C08J3/12; C08K3/22; C08K9/08; C08L1/00; C08L27/00; C08L33/00; C08L33/02; C08L101/00; (IPC1-7): C08J3/12; C08K3/22

JPS55162473A

1980-12-17

Kunihiko Wakabayashi

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