Compositions: coating or plastic – Materials or ingredients – Miscellaneous
Patent
1984-10-31
1986-03-18
Lieberman, Paul
Compositions: coating or plastic
Materials or ingredients
Miscellaneous
106 27, 106308F, 106309, C09C 300
Patent
active
045766495
ABSTRACT:
The present disclosure is concerned with the preparation of permanent pigments from selected cationic dyes by precipitation from aqueous solution with complex heteropoly acids in the presence of selected amine color enhancing agents. Typical of the dyes is Color Index Basic Red 12, typical of the complex heteropoly acid is silicomolybdic acid and typical of the amine color enhancing agents are abietyl amine, cetyl pyridinium chloride and benzyl tri-n-alkyl ammonium chlorides. The pigments are disclosed to have superior cleanliness, brightness and transparency compared to the same pigments prepared without the amine color enhancing agent. These pigments are disclosed to have particular utility in printing inks such as components of process red for four color printing.
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patent: 4042545 (1977-08-01), Defago et al.
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The Chemistry of Synthetic Dyes and Pigments, Section 11, Organic Pigments, E. R. Allen, 1972, pp. 625-661.
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Pigment and Dyestuff Manual of Bayer A.G., pp. 194-195.
Oliver Vincent S.
Prochaska Helmuth H.
Tames Walter
Wieser Karl-Heinz
Harsh Gene
Lieberman Paul
Mobay Chemical Corporation
Pope Lawrence S.
Thompson Willie J.
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