Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Patent
1988-05-23
1990-07-24
Lieberman, Paul
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
106416, 501145, 501146, C09C 128, C09C 306
Patent
active
049433245
ABSTRACT:
A high bulking kaolin pigment is provided which exhibits improved opacifying efficiency as a paper filler. The kaolin pigment comprises an uncalcined clay composition consisting essentially of kaolin particles which have not only been treated with an amine, but also upon which aluminum hydroxide has been precipitated, and, of which less than about 20% by weight have a particle size less than 0.3 microns in equivalent spherical dimeter. Further, a method is provided for producing the pigment from a hydrated kaolin clay having a brightness of at least about 89. The selected starting clay is dispersed in water and subjected as a slurry to delamination, defining, surface treatment with an amine and aluminum sulfate, and leaching. The treated kaolin slurry is subsequently rinsed and filtered to a produce a filter cake which is redispersed to yield a commercial paper filler.
REFERENCES:
patent: 3085894 (1963-04-01), Rowland
patent: 3151993 (1964-10-01), Bundy
patent: 3403041 (1968-09-01), Lyons et al.
patent: 3615806 (1971-10-01), Torock et al.
patent: 3620789 (1971-11-01), Solomon
patent: 4076548 (1978-02-01), Bundy et al.
patent: 4078941 (1978-03-01), Bundy et al.
patent: 4241142 (1980-12-01), Kaliski et al.
Clays and Clay Minerals, vol. 21, pp. 295-302, "The Effect of Aluminum on the Surface Properties of Kaolinite", Bundy et al., 1973.
Berberich Joseph P.
Bundy Wayne M.
Manasso John A.
Georgia Kaolin Company, Inc.
Habelt William W.
Lieberman Paul
Skane Christine A.
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