Weather-resistant, pearlescent pigment and process for producing

Details Weather-resistant, pearlescent pigment and process for producing Weather-resistant, pearlescent pigment and process for producing

1991-05-01

1993-06-29

Lieberman, Paul

Compositions: coating or plastic

Materials or ingredients

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

106450, 106480, C04B 1420, C04B 1430

Patent

active

052230341

ABSTRACT:
The invention relates to a weather-resistant, pearlescent pigment which comprises mica flakes coated with a metal oxide as base material, (a) hydrated zirconium oxide formed by hydrolysis of a zirconyl compound in the presence of a hypophosphite, and (b) a hydrated metal oxide (or oxides) formed by hydrolysis of a water-soluble compound (or compounds) of at least one member selected from the group consisting of cobalt, manganese and cerium, said components (a) and (b) being deposited on the surface of said base material.

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patent: 4828623 (1989-05-01), Nitta et al.
patent: 5022923 (1991-06-01), Rau et al.
Shaw "New Approach to Ceramic Colors" Ceramic Industry Apr. 1962 pp. 85-124.
Blumenthal "Zirconium Compounds in Water Repellents . . . " Industrial and Engineering Chem. Apr. 1950 pp.640-642.

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