Zinc and manganese pigments

Details Zinc and manganese pigments Zinc and manganese pigments

1974-06-20

1976-11-16

Garvin, Patrick P.

Compositions: coating or plastic

Coating or plastic compositions

Carbohydrate or derivative containing

106293, 106296, 106288B, C09C 104

Patent

active

039922197

ABSTRACT:
A zinc or manganese salt in the form of essentially plate-like particles is subjected to a sulphiding or, in the case of a zinc salt, an oxiding treatment, giving multi-layer structures where the treatment is partial or a single layer structure where the treatment is substantially complete. This treatment has the effect of increasing the refractive index of the particles without altering the plate-like shape of the particles. The treated particles are thus suitable for use as nacreous pigments.

REFERENCES:
patent: 2251869 (1941-08-01), Gamble et al.
patent: 2769716 (1956-11-01), Rankin
"Comprehensive Treatise on Inorganic and Theoretical Chemistry" vol. 4 Mellor 1946 pp. 659-661.
"Nouveau Traite de Chemie Minerale" vol. 5 Pascal 1962 p. 162.

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