http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2197586-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/C08G75-0254 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-0254 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-02 |
| filingDate | 1997-02-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2001-01-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d8c41aae1c0f096c0f9bfd248442d659 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4e2d86804b942ad6491a1ca64c1fa371 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bc8c5a8b923dcfa2d2bd9d59482531ad |
| publicationDate | 2001-01-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2197586-C |
| titleOfInvention | Process for producing poly (arylene sulfide) |
| abstract | The invention provides a process for producing a poly(arylene sulfide) comprising a dehydration step of heating and dehydrating a mixture containing an organic amide solvent (a), an alkali metal sulfide and water to control a water content in the mixture and a subsequent polymerization step of subjecting the alkali metal sulfide and a dihalo-aromatic compound to a polymerization reaction in the organic amide solvent (a), wherein hydrogen sulfide vaporized off during the dehydration step is absorbed in another organic amide solvent (b) outside a system in which the dehydration step is carried out, thereby recovering it, and the hydrogen sulfide thus recovered is reused in the polymerization reaction as a raw material for the alkali metal sulfide. The production process of the invention can solve various problems attendant upon the vaporization of hydrogen sulfide and provide a poly(arylene sulfide) which undergoes little variation in melt viscosity and has stable quality. |
| priorityDate | 1996-02-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.