http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2007008327-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7ce78240bf919571da49453e19026be5 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-06 |
| filingDate | 2006-06-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_71b06b0dabad4073beb74a6518494532 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f20ae8e4899348de27f5a22f30bde561 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_02d745fe08a1e1d8eb336ab67c023daa http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e3ebbeaa97a1d3c92bf5bc5d7ba6a23b |
| publicationDate | 2007-01-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-2007008327-A2 |
| titleOfInvention | A process for a two stage melt polymerization for the production of polybenzimidazole |
| abstract | The invention is a two-step process for the production of high molecular weight polybenzimidazole. Step one comprising: combining at least one aromatic hydrocarbon tetraamine and a dicarboxylic component; heating the reactants under agitation; terminating agitation while continuing heating to a step one temperature of about 230 °C and allowing the reaction mass to foam; cooling the reaction mass to a friable foamed mass; crushing said mass to obtain a first pulverized prepolymer. Step two comprising: transferring said first prepolymer into a second reaction vessel; pressure washing of the first reaction vessel to obtain a second pulverized prepolymer; transferring the second ground prepolymer to the second reaction vessel; heating the first and second pulverized prepolymers under agitation to a temperature that is higher than step one temperature until the desired degree of polymerization is achieved. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11548983-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11655339-B2 |
| priorityDate | 2005-07-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 111.