http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3923750-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/C08G69-32 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-32 |
| filingDate | 1973-05-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1975-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5fd62e0cdb61ac4bd0b7d4f1d4db4587 |
| publicationDate | 1975-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-3923750-A |
| titleOfInvention | Process for preparing wholly aromatic polyamides in the presence of an aryl sulfone |
| abstract | High molecular weight wholly aromatic linear polyamides of film and fiber-forming grade are prepared by direct condensation of monomeric aromatic dicarboxylic acids and aromatic diamines in about a mole to mole ratio in the presence of an aromatic sulfone. The condensation product can be further polymerized to film and fiber-forming viscosities either in the presence of the sulfone or in the solid state after the removal of the sulfone. The described process is particularly advantageous because it eliminates the previous requirement for condensation of derivatives of dicarboxylic acids to produce polyamides and provides the first commercially viable direct polymerization of wholly aromatic polyamides from aromatic dicarboxylic acids. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5238983-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4075269-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0007631-A1 |
| priorityDate | 1973-05-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 59.