Aqueous suspensions of calcium-containing fillers

Details Aqueous suspensions of calcium-containing fillers Aqueous suspensions of calcium-containing fillers

1992-03-02

1993-09-14

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

1621646, 1621681, 1621682, 1621812, 162183, D21H 1769

Patent

active

052445429

ABSTRACT:
There is disclosed an aqueous suspension of a particulate calcium-containing filler in which the particles of filler are surface treated with a dispersing agent comprising an anionic polyelectrolyte, characterized in that said dispersing agent further comprises sufficient of a cationic polyelectrolyte to render the particles cationic. The aqueous suspension is useful in the manufacture of paper.

REFERENCES:
patent: 4282059 (1981-08-01), Davidson
patent: 4610801 (1986-09-01), Matthews et al.
Paper Trade Journal, "Paper Mill Chemistry: Analyzing Use of Neutral Sizing and Calcium Carbonate in Paper", by Hugh R. Bryson, dated Oct. 15-31, 1978.

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