Process of producing plate-shaped calcium carbonate particles
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United States of America Patent
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Aug 15, 1989
Grant Date -
N/A
app pub date -
Mar 10, 1988
filing date -
Aug 21, 1986
priority date (Note) -
Expired
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Abstract
Disclosed is a novel process of producing plate-shaped calcium carbonate particles. The process comprises the steps of adding aqueous calcium hydrogen carbonate solution with a temperature of less than 50.degree. C. into an aqueous medium bath held at a temperature of not less than 50.degree. C. to generate plate-shaped calcium carbonate particles in the bath, the temperature of the bath being kept not less than 50.degree. C. during the addition of the aqueous calcium hydrogen carbonate solution; and recovering the generated plate-shape calcium carbonate particles.
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