Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1993-12-14
1995-01-10
Springer, David B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
106493, 106494, 106498, C07D48704
Patent
active
053808703
ABSTRACT:
Mixed crystals of at least two different compounds of formula ##STR1## wherein A and B are each independently of the other a cation of formula ##EQU1## or N.sup.+ H(R.sub.1)(R.sub.2)(R.sub.3) M is a mono-, di- or trivalent metal cation, n is 1, 2 or 3, R.sub.1, R.sub.2 and R.sub.3 are each independently of one another hydrogen, C.sub.1 -C.sub.22 alkyl, C.sub.7 -C.sub.24 aralkyl, C.sub.5 -C.sub.6 cycloalkyl or C.sub.6 -C.sub.18 aryl, m is 0 or 1, and R is hydrogen, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy, in which compounds of formula I that form the mixed crystals the cations A and B constitute a composite structure ##EQU2## wherein x is a value from 0.2 to 0.8, and the X-ray diffraction pattern of said mixed crystals differs from that of the corresponding compounds in which x is 1 or 0.
These mixed crystals can be used as pigments for colouring organic material of high molecular weight and have exceptional properties, especially dispersibility, heat- and lightfastness.
REFERENCES:
patent: 4689087 (1987-08-01), Spietschka et al.
patent: 4791204 (1988-12-01), Jost et al.
Derwent 90-321772/43 (1990).
Eichenberger Thomas
Hari Stefan
Herren Fritz
Wallquist Olof
Ciba-Geigy Corporation
Kovaleski Michele A.
Springer David B.
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