http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2005281389-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b19eaa8e535da4e4bceed99917a68153 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N33-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J20-281 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J20-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J20-26 |
| filingDate | 2004-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bafe957d986684b70468385c6aad8b19 |
| publicationDate | 2005-10-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2005281389-A |
| titleOfInvention | Method for producing polybenzoxazole precursor |
| abstract | An industrially advantageous method for producing a polybenzoxazole precursor excellent in heat resistance, electrical properties, mechanical properties and the like is provided. A method for producing a polybenzoxazole precursor comprising: (a) synthesizing a dicarboxylic acid derivative by reacting a dicarboxylic acid compound with 1-hydroxybenzotriazole using dicyclohexylcarbodiimide as a condensing agent. A step (b) a second step of synthesizing a polybenzoxazole precursor by reacting the dicarboxylic acid derivative with a bisaminophenol compound, and (c) from the reaction solution of the polybenzoxazole precursor as a leaving group. The manufacturing method of the polybenzoxazole precursor characterized by including the 3rd process of removing the produced 1-hydroxybenzotriazole using a batch-type chromatographic separation apparatus. |
| priorityDate | 2004-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 66.