http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H01263121-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2f8cfa5aee4410611b5c562275c9f8e3 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G85-00 |
| filingDate | 1988-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2b9bc5f8cf7b341a5eb311be208f8fe5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_be974ab384214ee062bab0e686af0060 |
| publicationDate | 1989-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H01263121-A |
| titleOfInvention | Purification of aromatic polymer |
| abstract | PURPOSE: To efficiently provide the subject polymer having good heat resistance, moisture absorbing property and weather resistance, by grinding an aromatic polymer mixture in a non-solvent and heating the ground polymer mixture under reduced pressure at a temperature between the glass transition temperature, etc., of the polymer and the vapor pressure temperature of a reaction solvent to remove the non-solvent and the solvent. n CONSTITUTION: 4,4-Dihydroxydiphenyl sulfone, etc., is polycondensated with 4,4'-dichlorodiphenyl sulfone, etc., in the presence of potassium carbonate in a reaction solvent such as tetramethylene sulfone at 225°C to provide an aromatic polymer such as an aromatic polyether sulfone. The resultant aromatic polymer mixture is ground in a non-solvent such as methanol and subsequently heated under reduced pressures within an operative temperature range 3 lower than the glass transition temperature 1 or melting point of the aromatic polymer mixture and higher than the temperature of the vapor pressure 2 of the reaction solvent to distill of the non-solvent and the reaction solvent, thereby purifying the aromatic polymer. n COPYRIGHT: (C)1989,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2017141421-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11104771-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10703862-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108699331-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108699331-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2017138600-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2019062506-A1 |
| priorityDate | 1988-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.