Method for forming aggregated kaolin pigment

Details Method for forming aggregated kaolin pigment Method for forming aggregated kaolin pigment

1989-10-04

1990-12-11

Group, Karl

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106485, 106486, 106488, 501144, 501147, C04B 1410

Patent

active

049767860

ABSTRACT:
A method for forming a hydrothermally aggregated kaolin clay pigment, comprising preparing an aqueous slurry of particulate kaolin clay and sodium aluminate, having a total solids concentration of from about 2 to 25% by weight, the weight ratio between kaolin and aluminate being greater than 1; and hydrothermally treating the slurry in a closed system to form aggregates of adherent kaolin platelets.

REFERENCES:
patent: 3616900 (1971-11-01), Cecil et al.
patent: 3655038 (1972-04-01), Mercede
patent: 3661515 (1972-05-01), Iannicelli et al.
patent: 3674521 (1972-07-01), Noble
patent: 3765825 (1973-10-01), Hurst
patent: 3769383 (1973-10-01), Hurst
patent: 3837877 (1974-09-01), Bertorelli
patent: 4075280 (1978-02-01), Fitton et al.
patent: 4499062 (1985-02-01), Christophliemk et al.
patent: 4816074 (1989-03-01), Raythatha et al.

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