Preparation of phthalocyanine crystal |
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| 申请号 | JP9128989 | 申请日 | 1989-04-11 | 公开(公告)号 | JPH02269776A | 公开(公告)日 | 1990-11-05 |
| 申请人 | Mitsubishi Kasei Corp; | 发明人 | ONO HITOSHI; OTSUKA SHIGENORI; HIROI MASAYUKI; | ||||
| 摘要 | PURPOSE: To prepare a highly pure phthalocyanine crystal industrially favorably by treating a phthalocyanine with a soln. contg. at least trifluoroacetic acid. CONSTITUTION: A highly pure phthalocyanine crystal is obtd. by dissolving a phthalocyanine, e.g. nonmetallophthalocyanine, magnesium phthalocyanine, and phthalocyanine derivs., in a solvent which contains trifluoroacetic acid as the essential component and if necessary contains benzene, chloroform, trichloroacetic acid, etc., and by recrystallizing said phthalocyanine from the soln. Usable methods for the recrystallization include precipitation utilizing a change in solubility with temp. and precipitation by mixing with a good solvent. By proper selection of the solvent and the quantity, ratio and temp. of the solvent, various crystal forms can be obtd. COPYRIGHT: (C)1990,JPO&Japio |
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