Yellow nacreous pigments having calcined CR oxide and phosphate

Details Yellow nacreous pigments having calcined CR oxide and phosphate Yellow nacreous pigments having calcined CR oxide and phosphate

1982-09-22

1984-06-26

McCarthy, Helen M.

Compositions: coating or plastic

Coating or plastic compositions

Carbohydrate or derivative containing

106302, 106308B, 424 63, C09C 100

Patent

active

044564864

ABSTRACT:
Nacreous pigments having a yellow powder color and an improved light-fastness comprise a mica platelet coated with titanium dioxide and on the titanium dioxide layer, a thin layer of calcined chromium oxide and/or chromium phosphate as a protective layer. The pigments are produced by coating mica platelets coated with metal oxides and/or hydroxides, with a thin layer of a sparingly soluble chromium(III) compound and calcining at about 500.degree.-1000.degree. C.

REFERENCES:
patent: 3087828 (1963-04-01), Linton
patent: 3087829 (1963-04-01), Linton
patent: 3127280 (1964-03-01), Whatley
patent: 3342617 (1967-09-01), Jackson
patent: 3832208 (1974-07-01), Jackson
patent: 3926659 (1975-12-01), Bernhard et al.
patent: 4086100 (1978-04-01), Esselborn et al.
patent: 4134776 (1979-01-01), Rieger et al.

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