Calcium titanate powder, method for producing same and external toner additive for electrophotography

A powder which is composed of particles that are mainly composed of calcium titanate having a perovskite crystal structure, and primary particles of which have a generally spherical shape and an average particle diameter within the range of from 20 nm to 100 nm (inclusive). This powder is produced b...

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Bibliographic Details
Main Authors Koga, Toshiyuki, Tanaka, Takayasu, Yoshimi, Tomoko, Seki, Toshimasa, Mino, Wataru
Format Patent
LanguageEnglish
Published 10.09.2024
Subjects
CHEMISTRY
CINEMATOGRAPHY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
INORGANIC CHEMISTRY
MAGNETOGRAPHY
METALLURGY
PHOTOGRAPHY
PHYSICS
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Summary:A powder which is composed of particles that are mainly composed of calcium titanate having a perovskite crystal structure, and primary particles of which have a generally spherical shape and an average particle diameter within the range of from 20 nm to 100 nm (inclusive). This powder is produced by a method which comprises: the production of calcium titanate by subjecting a mixed liquid that contains a sugar, an alkali, a water-soluble compound containing calcium, and a compound which is obtained by deflocculating a hydrolysis product of a titanium compound with use of a monobasic acid to a high-pressure liquid-phase reaction that includes heating to a temperature of from 100° ° C. to 270° C. (inclusive),; and a subsequent calcium removal treatment.
Bibliography:Application Number: US201917260895