Red pigment and manufacturing method thereof

Details Red pigment and manufacturing method thereof Red pigment and manufacturing method thereof

1993-09-22

1996-06-04

Group, Karl

Compositions: coating or plastic

Materials or ingredients

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

106415, 106459, 4274193, C09C 122

Patent

active

055229239

ABSTRACT:
A red pigment comprising: an iron oxide plate type particle, an aluminum compound layer which contains at least aluminum oxide and which is formed on the iron oxide particle, and the optical thickness of the aluminum compound layer being 150-500 nm. The red pigment according to the present invention has excellent color tone with high chroma from the orange to the blue red and moreover, and excellent stability.

REFERENCES:
patent: 4435220 (1984-03-01), Watanabe et al.
patent: 4780140 (1988-10-01), Franz et al.
patent: 4840677 (1989-06-01), Ostertag
patent: 5059250 (1991-10-01), Burow et al.
patent: 5244649 (1993-09-01), Ostertag et al.
patent: 5273576 (1993-12-01), Sulliuan et al.
Chemical Abstracts, vol. 112, No. 14, Apr. 2, 1990, Abstract No. 120724s, p. 99, T. Katamoto, et al.

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