http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1215192-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_04650c4315071ee8af7d26e3441a53b1 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-00 |
| filingDate | 1984-01-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1986-12-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_431a4a19cb37914d55e6fc5ff777275c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1615082a4036355b9b7596cdc83cfcb6 |
| publicationDate | 1986-12-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1215192-A |
| titleOfInvention | Production of high molecular weight polybenzimidazoles |
| abstract | ABSTRACT OF THE DISCLOSURE This invention provides a two stage melt polymerization process for the production of an improved type of high molecular weight polybenzimidazole, which involves the use of an arylphosphinic acid or arylphosphonic acid polymerization catalyst. The process provides poly-2,2'-(m-phenylene)-5,5'-bibenzimidazole of improved color and plugging value, and is further characterized by an inherent viscosity of at least about 0.7 dl/g, and a weight average molecular weight of at least about 100,000. |
| priorityDate | 1983-01-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 68.