Process for producing .beta.- phase copper phthalocyanine...

Details Process for producing .beta.- phase copper phthalocyanine... Process for producing .beta.- phase copper phthalocyanine...

C - Chemistry, Metallurgy

09

B

C09B 67/04 (2006.01) C09B 67/12 (2006.01) C09B 67/22 (2006.01) C09B 67/50 (2006.01)

Patent

CA 2401338

A process for the preparation of .beta. phase copper phthalocyanine pigment which includes dry grinding crude copper phthalocyanine in the absence of a grinding aid to obtain a crude mill; and conditioning the crude mill in about 5 to 50 wt.% based on the weight of the crude mill of a conditioning solvent.

L'invention concerne un procédé permettant de préparer un pigment phtalocyanine de cuivre à phase .beta.. Ce procédé consiste à broyer de la phtalocyanine de cuivre brute sans adjuvant de broyage de manière à obtenir une poudre grossière, et à conditionner cette poudre grossière dans un solvant de conditionnement, la proportion en poids de solvant étant de 5 à 50 % du poids de la poudre grossière.

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