http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S57170924-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_630b360599ea5cf4b5bcbc0c6c0a3e2d |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-64 |
| filingDate | 1981-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b0ca7e22c9643c4f8db5e93dd83ccab5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8f379bc4c7e9ffab351530b2a35072d5 |
| publicationDate | 1982-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S57170924-A |
| titleOfInvention | Preparation of aromatic polyester polycarbonate resin |
| abstract | PURPOSE: To obtain the titled resin by evaporating and concentration a methylene chloride solution of a resin having a specific structural unit and obtained by the polycondensation of a dihydroxydiaryl compound, terephthaloyl chloride, etc. and phosgene, at a specific rate of evaporation, thereby easily pulverizing the resin and removing the methylene chloride. n CONSTITUTION: A dilute methylene chloride solution of an aromatic polyester polycarbonate resin having the structural units of formulaIand formula II (X is divalent group; aromatic nucleus may have substituent group) is prepared by the polycondensation of an alkaline aqueous solution of a dihydroxydiaryl compoud, a methylene chloride solution of tere(and/or iso)phthaloyl chloride, and phosgene. The dilute solution is washed to attain a resin concentration of 3W10wt%, and gelatinized by evaporating methylene chloride (the rate of evaporation of methylene chloride is maintained to 1W5kg/hr per 1kg of the resin in the methylene chloride solution at normal pressure and 40W150°C and at a resin cncentration of 20W35%). The gel is crushed, and the methylene chloride is removed by the thermal drying to obtain the objective resin. n COPYRIGHT: (C)1982,JPO&Japio |
| priorityDate | 1981-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.