Method for the preparation of x-form metal free phthalocyamine

Details Method for the preparation of x-form metal free phthalocyamine Method for the preparation of x-form metal free phthalocyamine

1972-11-22

1978-07-04

Randolph, John D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C09B 4704

Patent

active

040987957

ABSTRACT:
A method for the preparation of X-form metal-free phthalocyanine and X-form metal-free compounds which comprises heating any metal-free phthalocyanine polymorph or compound to from about 540.degree. to about 580.degree. C and cooling the resulting product formed thereby is herein disclosed.

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patent: 2706199 (1955-04-01), Brentano
patent: 2759950 (1956-08-01), Tartter
patent: 3708293 (1973-01-01), Brach et al.
Moser et al., Phthalocyanine Compounds, pp. 23-28 (1963).

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