Mixed sodium, ammonium and/or calcium salt crystals of laked mon

Details Mixed sodium, ammonium and/or calcium salt crystals of laked mon Mixed sodium, ammonium and/or calcium salt crystals of laked mon

1989-05-08

1990-12-25

Higel, Floyd D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

534573, 534712, 534784, 534887, 8641, 106494, 106496, C09B 6722, C09B 6300, C09B 2950, C09B 2901

Patent

active

049804588

ABSTRACT:
Mixed crystals of at least two different compounds of formula I ##STR1## wherein R is --CH.sub.3, phenyl, --COOCH.sub.3, --COOCH.sub.3, --COOC.sub.2 H.sub.5, --NHCO--C.sub.1 -C.sub.4 alkyl or --CONH--C.sub.1 -C.sub.4 alkyl, M.sup.+ and M.sub.1.sup.+ are each independently of the other an alkali metal cation, an alkaline earth metal cation or a heavy metal cation or NH.sub.4.sup.+ ; wherein X, Y, X' and Y' are each independently hydrogen, halogen, --CH.sub.3, --C.sub.2 H.sub.5, --OCH.sub.3, --OC.sub.2 H.sub.5, --NO.sub.2 or the group of formula --NHCO--C.sub.1 -C.sub.4 alkyl, wherein at least two of the cations M.sup.+ and M.sub.1.sup.+ in the compounds forming the mixed crystals of formula I are different and the X-ray diffraction patterns of the mixed crystals differ from the X-ray diffraction patterns of the individual components and of their sum. Such mixed crystals are most suitable as pigments for coloring high molecular organic material and are distinguished in particular by surprisingly high color strength and pure shade.

REFERENCES:
patent: 935830 (1909-06-01), Volkmann I
patent: 969428 (1910-09-01), Volkmann II
patent: 1098600 (1914-10-01), Volkmann III
patent: 1701248 (1929-02-01), Wagner et al.
patent: 1730179 (1929-10-01), Wagner II et al.
patent: 1830300 (1931-11-01), Tisza et al.
patent: 2237768 (1941-04-01), Scudi
patent: 2457823 (1949-01-01), Kendall et al.
patent: 2842537 (1958-07-01), Strobel et al.
patent: 2937165 (1960-05-01), Fiess
patent: 3905952 (1975-09-01), Speck

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