http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H02269776-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_630b360599ea5cf4b5bcbc0c6c0a3e2d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B67-0026 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B67-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03G5-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B67-50 |
| filingDate | 1989-04-11^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d62b1292f6de2d20e5f7b4a2ab2993e1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b28a5408974f07c82a6a9671f7d22802 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_744e1a77e74194868cebecd6350e66b5 |
| publicationDate | 1990-11-05^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H02269776-A |
| titleOfInvention | Preparation of phthalocyanine crystal |
| abstract | PURPOSE: To prepare a highly pure phthalocyanine crystal industrially favorably by treating a phthalocyanine with a soln. contg. at least trifluoroacetic acid. n 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. n COPYRIGHT: (C)1990,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H03116153-A |
| priorityDate | 1989-04-11^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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