Process for producing calcium carbonate particles having a size

Details Process for producing calcium carbonate particles having a size Process for producing calcium carbonate particles having a size

1997-04-23

1998-09-22

Lewis, Michael L.

Chemistry of inorganic compounds

Carbon or compound thereof

Oxygen containing

423265, C01F 1118

Patent

active

058110704

ABSTRACT:
A process for producing calcium carbonate particles having an average size of 0.1 to 1.0 .mu.m, the process comprising the steps of introducing carbon dioxide into a milk of lime containing a first reagent to prepare an aqueous suspension containing calcium carbonate particles of 0.4 .mu.m in average size, adding a milk of lime into the aqueous suspension, and continuously reacting a carbonated solution containing a second reagent with the aqueous suspension. Calcium carbonate powders according to the process show a superior quality as a filler for adhesives, paints, inks, papers and plastics, especially PET films.

REFERENCES:
patent: 4242318 (1980-12-01), Brohm et al.
patent: 5007964 (1991-04-01), Tsukisaka et al.

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