Production of dimethylaminomethyl copper phthalocyanine

Details Production of dimethylaminomethyl copper phthalocyanine Production of dimethylaminomethyl copper phthalocyanine

1988-09-19

1990-04-24

Raymond, Richard L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C09B 4716

Patent

active

049202170

ABSTRACT:
The present invention provides a process for the production of dimethylaminomethyl copper phthalocyanine having an average of 1 to 4 dimethylaminomethyl groups per molecule which comprises reacting aminomethyl copper phthalocyanine having an average of 1 to 4 aminomethyl groups per molecule with formaldehyde and aqueous formic acid at a concentration of 2 to 60%, at atmospheric pressure, and at an elevated temperature.

REFERENCES:
patent: 4810297 (1989-03-01), Takei et al.

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