Glycol dispersion of precipitated calcium carbonate
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United States of America Patent
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Feb 4, 1992
Issued Date -
N/A
app pub date -
Jan 2, 1991
filing date -
Jul 6, 1988
priority date (Note) -
Expired
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Abstract
The present invention provides a glycol dispersion comprising calcium carbonate and glycol prepared by wet-grinding under the specified conditions a glycol slurry composed of glycol and calcium carbonate satisfying the specified dispersibility and particle size. The glycol dispersion of the present invention is good in dispersion stability in glycol and is capable of improving running property of audio tapes, video tapes, etc., thus contributing to improvement in properties such as sound and image.
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