Compositions: coating or plastic – Materials or ingredients – Miscellaneous
Patent
1982-12-27
1985-04-09
Williams, Howard S.
Compositions: coating or plastic
Materials or ingredients
Miscellaneous
106308B, 106308Q, 106291, 427215, 428363, 428404, B32B 1902, C04B 3126, C09C 100, C09C 306
Patent
active
045099880
ABSTRACT:
Nacreous pigments having improved light fastness are based on mica flakes coated with metal oxides, wherein the metal oxide layer is formed as a homogeneous mixed layer in which, in addition to titanium dioxide, silicon dioxide and iron oxide are also present. To produce these pigments, mica is coated in an aqueous suspension by coprecipitation of a titanium dioxide hydrate, iron hydroxide and silicon dioxide to form a uniform layer. The flakes are then washed, dried and calcined.
The pigments can be used for the pigmenting of plastics, lacquers, paints and toiletries.
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patent: 3087829 (1963-04-01), Linton
patent: 3342617 (1967-09-01), Jackson
patent: 3650790 (1972-03-01), Klenke et al.
patent: 3711308 (1973-01-01), Brand et al.
patent: 3832208 (1974-07-01), Jackson
patent: 3926659 (1975-12-01), Bernhard et al.
patent: 4134776 (1979-01-01), Rieger et al.
Merck Patent Gesellschaft mit beschraHaftung
Williams Howard S.
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