Process for the preparation of discrete particles of calcium carbonate
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United States of America Patent
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Apr 21, 1998
Grant Date -
N/A
app pub date -
Dec 5, 1995
filing date -
Dec 5, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for the precipitation of discrete prismatic calcium carbonate particles by carbonation of aqueous calcium hydroxide containing a saccharide or polysaccharide or a saccaride or polysaccharide and a metal ion at temperatures of from about 8.degree. C. to about 64.degree. C. is disclosed. The resulting product has specific surface areas between about 10 m.sup.2 /g and about 120 m.sup.2 /g and is useful in paints, plastics, paper coating, paper filling, and pharmaceutical applications.
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