Phthalonitrile → Dichlorotitanium phthalocyanine

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반응 단계

40 g of o-phthalodinitrile, 18 g of titanium tetrachloride and 500 ml of α-chloronaphthalene were heated and stirred under a nitrogen atmosphere at 200 to 250° C. for 3 hours to react them, and after allowed to be cooled to 100 to 130° C., the reaction product was filtrated while hot and washed with 200 ml of α-chloronaphthalene heated to 100° C., so as to obtain a crude product of dichlorotitanium phthalocyanine. The crude product was washed successively with 200 ml of α-chloronaphthalene and 200 ml of methanol at room temperature, and was washed by dispersing in 500 ml of hot methanol for 1 hour. A crude product obtained by filtration was repeatedly washed by dispersing in 500 ml of hot water until the pH becomes 6 to 7, and oxotitanylphthalocyanine crystal was obtained by drying.

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