Method for forming aggregated kaolin pigment

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

1990-06-04

1992-09-29

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

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

106463, 106461, 106468, 106486, 106632, 501144, 501145, 501150, 427361, 427391, C04B 1400

Patent

active

051511240

ABSTRACT:
A method for forming a hydrothermally aggregated kaolin clay pigment, comprising: preparing an aqueous slurry of a particulate kaolin clay, sodium silicate, and finely divided calcium carbonate, having a total solids concentration of from about 10 to 20% by weight; the non-aqueous components including 60 to 80 parts per hundred by weight of said kaolin and from 10 to 20 pph by weight each of said sodium silicate and said calcium carbonate; and hydrothermally treating said slurry in a closed system to form aggregates of adherent kaolin platelets.

REFERENCES:
patent: 4812299 (1989-03-01), Wason
patent: 4816074 (1989-03-01), Raythatha

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