http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1278143-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_28a869d6fc950d50f6df03f549ca3afa |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-0231 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-0281 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-0254 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-0213 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-0254 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-0209 |
| filingDate | 1987-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1990-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cb570f7157473390478b2b94e227f666 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8adca4a712c2fd79c938b33a3e57731c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_15c2de3e3576dd70dc6c366c2b7239d9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1f8b1c0f12c15bdd804c8b283a6ee363 |
| publicationDate | 1990-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1278143-C |
| titleOfInvention | Process for producing polyarylene sulfide |
| abstract | ABSTRACT OF THE DISCLOSURE Disclosed herein is a process for producing a medium-or high-molecular-weight polyarylene sulfide which comprises subjecting an alkali metal sulfide, a dihalo aromatic compound and optionally, small amount of tri- or higher polyhalo aromatic compound to dehalogenation and sulfidation reaction at a temperature of from 235 to 280°C in the presence of a water in amount of from 0.5 to 5 mol per 1 kg of an aprotic organic polar solvent until the conversion of said dihalo aromatic compound reaches from 70 to 98 mol%, thereby forming a polyarylene sulfide prepolymer having a melt viscosity of from 5 to 300 poise (as measured at 310°C under a shear rate of 200 sec-1), adding water to the resultant reaction mixture containing the polyarylene sulfide prepolymer so that from 6 to 15 mol of water is present per 1 kg of said solvent, and then continuing the reaction at a temperature of from 240 - 290°C, in which the reaction comprising said two steps is conducted for from 1 to 10 hours. The polyarylene sulfide (PAS) produced the process of the present invention is useful as a material for the production of electronic equipments and automobile parts. |
| priorityDate | 1986-08-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 79.