C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
23/21
C01F 11/18 (2006.01)
Patent
CA 1150930
P.C. 6322 PROCESS FOR THE PREPARATION OF FINELY DIVIDED PRECIPITATED CALCIUM CARBONATE Abstract A process for the preparation of finely divided precipitated calcite in which carbon dioxide is intro- duced into an aqueous calcium hydroxide slurry contain- ing anionic organopolyphosphonate polyelectrolyte with the carbonation started at a temperature above about 7 and below about 18°C.
392386
Gowling Lafleur Henderson Llp
Pfizer Inc.
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