Compositions: coating or plastic – Coating or plastic compositions – Carbohydrate or derivative containing
Patent
1977-02-25
1978-04-25
Douglas, Winston A.
Compositions: coating or plastic
Coating or plastic compositions
Carbohydrate or derivative containing
106288B, 106306, 106302, C09C 104
Patent
active
040861236
ABSTRACT:
Pigments are disclosed comprising zinc sulfide as a host containing in solid solution at least a sufficient amount of a metal sulfide additive or dopant to alter the color of the zinc sulfide. The dopant may comprise one or more certain metal sulfides but normally is present as a unitary sulfide, such as lithium sulfide, or preferably as a multiple sulfide, such as lithium indium sulfide and copper indium sulfide. Optionally, a binary metal compound dopant can include a metal oxide. The pigments may be prepared by encapsulating the host and dopant metal sulfides in vacuum to prevent introduction of oxides and then heating to an equilibrium temperature.
REFERENCES:
patent: 3091544 (1963-05-01), Hund et al.
patent: 3802900 (1974-04-01), Broll et al.
patent: 3847639 (1974-11-01), Broll et al.
patent: 3852404 (1974-12-01), Daly
Hummel Floyd A.
Sombuthawee Charussri
Douglas Winston A.
Ferro Corporation
Howard J. V.
Simmons Milton L.
Taylor Wesley B.
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