Process for preparing unsupported metal oxide nacreous pigments

Details Process for preparing unsupported metal oxide nacreous pigments Process for preparing unsupported metal oxide nacreous pigments

1995-12-13

1997-03-18

Bonner, Melissa

Compositions: coating or plastic

Materials or ingredients

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

106417, 106436, C04B 1432

Patent

active

056118511

ABSTRACT:
A nacreous pigment is prepared by subjecting a metal oxide-coated mica nacreous pigment to an acid extractive dissolution using a combination of a mineral acid and phosphoric acid followed by an extractive dissolution using an alkali.

REFERENCES:
patent: 4192691 (1980-03-01), Armanini
patent: 4883539 (1989-11-01), Mattila et al.
patent: 5076849 (1991-12-01), Vapaaoksa et al.

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