PROCESS FOR PRODUCING COATED PARTICLES

WIPO Patent Application WO/1996/015986

A1

A process for producing black particles coated with an insulation film and utilizable as, e.g., a spacer for liquid crystal display, which comprizes the steps of: (1) preparing a dispersion of metal oxide particles in an alcoholic solvent mainly comprising an intermediate alcohol; (2) activating the surface of each particle by adding an aqueous alkali solution to the dispersion prepared above; (3) preparing particles coated with a titanium oxide film by forming a titanium oxide film comprising TiO2 on the particle surfaces activated above; (4) preparing black particles by blackening the titanium oxide film by firing the coated particles prepared above in a reducing and/or nitriding atmosphere; and (5) forming an electrical insulation film on the surface of each black particle prepared above.

ADACHI TATSUHIKO (JP)
SAKAI KAZUHIKO (JP)
NAKAYAMA NORIHIRO (JP)
MIYANISHI TAKAKO (JP)
FUJINO KENICHI (JP)
TAKAGI HIDEKAZU (JP)
KIMATA MITSUMASA (JP)

PCT/JP1995/000006

May 30, 1996

January 06, 1995

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UBE NITTO KASEI CO (JP)
ADACHI TATSUHIKO (JP)
SAKAI KAZUHIKO (JP)
NAKAYAMA NORIHIRO (JP)
MIYANISHI TAKAKO (JP)
FUJINO KENICHI (JP)
TAKAGI HIDEKAZU (JP)
KIMATA MITSUMASA (JP)

B01J2/00; G02F1/1339; (IPC1-7): C01G23/04; B01J2/00

JPH059027A	1993-01-19
JPS6240292B2	1987-08-27

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