Compositions: coating or plastic – Materials or ingredients
Patent
1978-09-05
1980-02-19
McCarthy, Helen M.
Compositions: coating or plastic
Materials or ingredients
260392, C09B 1110
Patent
active
041893280
ABSTRACT:
This invention is concerned with the modification of the hue of Alkali Blue pigments of known organic structures by intimate incorporation under aqueous alkaline conditions of a minor amount of a phenolic compound, illustratively beta naphthol. Upon recovery of the treated pigment under aqueous acid conditions, the hue of Alkali Blue is modified from a generally red shade blue to the greener end of the spectrum. The invention provides a novel means of color control and color modification with consequent correlative new compositions of matter.
REFERENCES:
patent: 2429081 (1947-10-01), Steuber
patent: 3057776 (1962-10-01), Short et al.
patent: 4032357 (1977-06-01), Rees et al.
McCarthy Helen M.
Smith Richard G.
The Sherwin-Williams Company
Tura James V.
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