Finely divided calcium carbonate compositions

Details Finely divided calcium carbonate compositions Finely divided calcium carbonate compositions

1986-12-10

1988-03-22

Sneed, Helen M. S.

Chemistry of inorganic compounds

Carbon or compound thereof

Oxygen containing

423635, 1621812, C01F 1118

Patent

active

047327480

ABSTRACT:
Finely divided, wet-ground, dispersant-free calcium carbonate filler or pigment compositions are disclosed in which the particles of calcium carbonate are distributed in particular amounts in a particular fashion--broadly stated: in fine particle size distribution. Such compositions are useful in aqueous slurry or dry form as opacifying fillers for paper.

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patent: 4244933 (1981-01-01), Shibazaki et al.
patent: 4293097 (1981-10-01), Lewis et al.
patent: 4610801 (1986-09-01), Matthews et al.

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