Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Patent
1990-01-26
1992-01-07
Dixon, Jr., William R.
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
106416, 106436, 106437, 106442, 106446, C04B 1420, C04B 1430, C09C 136
Patent
active
050787934
ABSTRACT:
Composite white pigments composed of titanium dioxide (TiO.sub.2) and kaolin are prepared by subjecting kaolin slurry to spray drying with injected gas to promote droplet fluffing and fragmentation. The slurry contains a hydrocolloid suspending agent and a cationic reagent for making the kaolin particles cationic. The frangible dry material thus produced can be blended with TiO.sub.2 particles to produce an extended TiO.sub.2 pigment.
REFERENCES:
patent: 3117883 (1964-01-01), Gilchrist
patent: 3222193 (1965-12-01), Hanrahan
patent: 3453131 (1969-06-01), Fadner
patent: 3458395 (1969-07-01), Stalker
patent: 3726700 (1973-04-01), Wildt
patent: 4180593 (1979-12-01), Cohan
patent: 4295933 (1981-10-01), Smith
Ansilex 93 in Paper Filling Applications TI 803, from commercial of Englehard Corp. (publication date unknown).
Chang et al., An Investigation into the Mechanism of Titanium-Dioxide Entension by Calsium Carbonate, Tappi Journal, pp. 128-131 (1988).
"Grant and Hackh's Chemical Dictionary", Fifth Edition, pp. 121,178, 461 and 552; McGraw-Hill, N.Y.; 1987.
Dixon Jr. William R.
Hertzog Scott L.
Pacemaker, Ltd.
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