Laked high molecular weight dyes

Compositions: coating or plastic – Coating or plastic compositions – Inorganic materials only containing at least one metal atom

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426250, 426539, 426540, C04B 3138

Patent

active

041674227

ABSTRACT:
Organic pigment lakes are prepared by adsorption of a high molecular weight or polymeric dye onto suitable substratum or extender therefor. The properties of the resultant polymeric lakes approach those of true pigments, and said lakes exhibit maximized dye loading capacities and are exceptionally free of bleed. Thus, the applicability of lake colors is extended in the various food systems and their use is also permitted as industrial pigments.

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"Hackh's Chemical Dictionary", 4th ed. McGraw-Hill Book Co., N. Y., 1969, p. 368.
"The Condensed Chemical Dictionary", 8th edition, Van Nostrand Reinhold Co., New York, 1971, p. 502.
"Studies in Polymeric Dyes I", Macromolecularization of Food Dyes, Ido et al., Sep. 1968.

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