Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Patent
1993-04-12
1995-01-10
Bell, Mark L.
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
106418, 106436, 106456, 428363, 428403, C04B 1420
Patent
active
053803604
ABSTRACT:
Disclosed are a flaky pigment in which the surfaces of fine flaky grains, as a pigment base, have been coated with ultra-fine barium sulfate grains having a mean grain size of 0.1 .mu.m or less. The pigment is produced by a process comprising reacting:
(a) an aqueous solution containing a complexing agent capable of forming a complex compound with barium ion, as dissolved therein;
(b) an aqueous solution containing a water-soluble barium compound as dissolved therein; and
(c) an aqueous solution containing sulfate ion. The invention involves this method of preparing the flaky pigment, and use of the pigment in pigment coloration of cosmetics, top coats for cars, plastics, printing inks, domestic electrical appliances, coating materials and coating paints for building materials.
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patent: 5288481 (1994-02-01), Ounanian et al.
Noguchi Tamio
Waragai Yumiko
Bell Mark L.
Jones Deborah
Merck Patent Gesellschaft mit beschrankter Haftung
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