http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3850888-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-32 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-32 |
| filingDate | 1972-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1974-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a32b45716f58b4b23aa93584ca06ce37 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1290d4eb7d6f9225dba6cf9dbc1bfa49 |
| publicationDate | 1974-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-3850888-A |
| titleOfInvention | Process for producing poly-p-phenylene terephthalamide from solution of p-phenylene diamine and molten terephthaloyl chloride |
| abstract | 1. A CONTINUOUS PROCESS FOR PRODUCING POLY(P-PHENYLENE TEREPHTHALAMIDE) COMPRISING IMPINGING A LIQUID STREAM COMPRISING A 5-10% BY WEIGHT SOLUTION OF P-PHENYLENE DIAMINE IN HEXAMETHYLPHOSPHORAMIDE AT A TEMPERATURE OF ABOUT 10*C. TO 30*C. AGAINST A STREAM OF MOLTEN TEREPHTHALOYL CHLORIDE AT A TEMPERATURE OF FROM 85 -120*C. IN A MIXING ZONE, THE STREAMS BEING INTRODUCED CONTINUOUSLY AND AT SUCH RATE AS TO PROVIDE A LIQUID REACTION MIXTURE FROM SUBSTANTIALLY STOICHIOMETRIC AMOUNTS OF THE DIAMINE AND ACID HALIDE, SUBSTANTIALLY COMPLETELY REMOVING THE LIQUID REACTION MIXTURE FROM THE MIXING ZONE WITHIN ONE SECOND AFTER INTRODUCTION OF THE STREAMS INTO SAID ZONE AND INTRODUCING THE LIQUID REACTION MIXTURE INTO A FIRST POLYMERIZATION ZONE WITH VIGOROUS AGITATION TO ACHIEVE DISTRIBUTION OF THE INGREDIENTS, COOLING THE MIXTURE TO A TEMPERATURE OF LESS THAN ABOUT 95*C. AND SUBSTANTIALLY COMPLETELY REMOVING THE PRODUCT FROM THE FIRST POLYMERIZATION ZONE WITHIN ABOUT 4 TO 15 SECONDS AND FORWARDING IT TO A SECOND POLYMERIZATION ZONE AND MIXING THE PRODUCT AT A SHEARING STRESS SUFFICIENT TO LIQUIFY ANY GEL THAT FORMS AT A SHEAR RATE OF AT LEAST 100 SEC.-1 WHILE COOLING THE PRODUCT TO A TEMPERATURE NOT GREATER THAN 95*C. AND SUBSTANTIALLY COMPLETELY REMOVING THE CRUMBLIKE PRODUCT FROM THE SECOND POLYMERIZATION ZONE WITHIN 1 TO ABOUT 15 MINUTES. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102471933-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102471933-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2011018189-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4009153-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103059290-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4308374-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4297479-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101218382-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3933963-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106700065-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9394626-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2018210064-A1 |
| priorityDate | 1972-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.