| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a722ef6c8aa596ddf945da8a61951853
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8491c2fd554fea0c186e5238a694bb56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e7890f202e65575ae292675f93ccd59b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_349cc1a28c2f654248c13d3b21cfb37b |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-46 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-46 |
| filingDate |
1996-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b2b5fac34e80e85a7876b40c57b8ece0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e7b5c9b85478ec858490d09a80f89a4c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_85cda3d34823926adf12181e9df6a78a |
| publicationDate |
1997-03-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-9708224-A1 |
| titleOfInvention |
Method of continuously producing polyamide 6 using recycled lactam |
| abstract |
The invention concerns a method of continuously producing polyamide 6 using recycled lactam from extraction and melt-demonomerizing stages. According to the invention, the cyclic oligomers present in the recycled lactam owing to the addition of epsilon -caprolactam (fresh lactam) are dissolved in the lactam as a function of the concentration of the oligomers in the product in use, at a dissolution temperature of between 120 DEG C and 180 DEG C. The solution is then passed to a treatment, the solution preferably being introduced into a closed system and hydrolyzed in the fusible phase under pressure, at water contents of between 3 and 15 % and temperatures ranging from 220 to 280 DEG C. With a constant low water content being set, the melt is then fed to the polymerization process in a further pressure stage incorporating a gas chamber (polymerizator). |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101444965-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2015532358-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8263733-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6576774-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106940331-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106940331-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6528614-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2008049786-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/NL-1010161-C2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0017255-A1 |
| priorityDate |
1995-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |