B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
23/374, 6/89
B01J 2/28 (2006.01) A61K 9/16 (2006.01) B01J 20/04 (2006.01) C05D 3/02 (2006.01) C08K 3/26 (2006.01) C09C 1/02 (2006.01) D21H 19/44 (2006.01)
Patent
CA 2035325
A process for the preparation of a low density, substantially water-insoluble, particulate material which comprises forming an aqueous slurry containing precipitated calcium carbonate and a carbohydrate binder and treating said slurry to heating and mechanical processing steps to provide a particulate material having a particle size of 5-300 microns, a particle density of no more than 1.0 g/ml., and a resistance against degradation in water; and a low density, substantially water-insoluble, calcium carbonate-containing, particulate material prepared by such process.
Lehman Richard L.
Wise Kenneth J.
Lehman Richard L.
Limited Pfizer
Smart & Biggar
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