Phthalocyanine crystal, process for manufacture thereof and its

Details Phthalocyanine crystal, process for manufacture thereof and its Phthalocyanine crystal, process for manufacture thereof and its

1989-04-17

1991-02-19

Welsh, David

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

430 78, 430 58, C09B 4704

Patent

active

049945661

ABSTRACT:
A new crystal form of a titanyl phthalocyanine compound is provided. This crystal form shows characteristic strong absorption peaks at 1,332.+-.2 cm.sup.-1, 1,074.+-.2 cm.sup.-1, 962.+-.2 cm.sup.-1 and 783.+-.2 cm.sup.-1 in an infrared absorption spectrum and/or characteristic strong peaks at 27.2.degree., 9.7.degree. and 24.1.degree. of Bragg's angle 2.theta. in an X-ray diffraction spectrum and has very good dispersibility and stability in a solvent and also very good photoelectric conversion efficiency and so is very useful particularly as a charge generation agent highly sensitive in a semiconductor laser wavelength region as required in a photosensitive material for a highspeed high-definition printer. Such crystal form can be obtained by treating non-crystalline titanyl phthalocyanine with tetrahydrofuran.

REFERENCES:
patent: 4664997 (1987-05-01), Suzuki et al.

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