Metal-free phthalocyanine of the .gamma.-form

Details Metal-free phthalocyanine of the .gamma.-form Metal-free phthalocyanine of the .gamma.-form

1993-10-15

1995-07-11

Shah, Mukund J.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C09B 4730

Patent

active

054322774

ABSTRACT:
Metal-free phthalocyanine of the .gamma.-form is suitable inter alia for coloring printing inks, plastics and coatings and is characterized by the X-ray powder diagram (Cu.sub.K.alpha.) having the essential glancing angles 2 theta [.degree.]6.8, 7.4, 13.6, 14.9, 15.9, 16.9, 20.5, 22.4, 24.7, 26.2 and 27.8, possibly in mixture with other crystal forms, in which case the glancing angles may be shifted by .+-.0.2.degree. (FIG. 1).

REFERENCES:
patent: 3357989 (1967-12-01), Byrne et al.
patent: 4814441 (1989-03-01), Hauser et al.
patent: 5296034 (1994-03-01), Dietz et al.
Moser et al. The Phthalocyanines: Properties, vol. 1, Chapter 4, pp. 21-24, 1983.
Chemistry Letters, 1984, The Chemical Society of Japan, pp. 2037-2040, S. Takano, et al., "A New Polymorph of Metal-Free Phthalocyanine".

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