Production of dimethylaminomethyl copper phthalocyanine

Details Production of dimethylaminomethyl copper phthalocyanine Production of dimethylaminomethyl copper phthalocyanine

C - Chemistry, Metallurgy

09

B

260/197

C09B 47/22 (2006.01) C09B 47/16 (2006.01)

Patent

CA 1331754

PRODUCTION OF DIMETHYLAMINOMETHYL COPPER PHTHALOCYANINE Abstract of Disclosure 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.

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