Amorphous phthalocyanine compound or mixture of amorphous...

Details Amorphous phthalocyanine compound or mixture of amorphous... Amorphous phthalocyanine compound or mixture of amorphous...

C - Chemistry, Metallurgy

09

B

C09B 47/04 (2006.01) C09B 67/06 (2006.01) C09B 67/12 (2006.01) C09B 67/22 (2006.01) G11B 7/248 (2006.01)

Patent

CA 2071469

There are here disclosed an amorphous alkocypthalocyanine which is a compound or a mixture of compounds represented by the formula (I) shown in Claim 1 which have an improved solubility in organic solvents to reach a concentration useful as near infrared absorption filters, liquid crystal display elements and record/memory materials; and a method for preparing this amorphous alkoxypthalocyanine which comprises the steps of heating a crystalline pthalocyanine compound or a mixture of crystalline pthalocyanine compounds in an organic solvent, heating the solvent and distilling off or freeze-drying the organic solvent to separate the amorphous alkoxypthalocyanine.

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