| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e01790cf0feff2b72b51a52cd9012dfd |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-04 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-14 |
| filingDate |
2018-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ba38c64286b9b1a40b132ca85ca836b1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4b53a4dae495bdfebea0870bcc883acf
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_254649e7c8337fbf14dce7e799cf722c |
| publicationDate |
2020-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-20200032188-A |
| titleOfInvention |
Method for polymerizing cyclic oligomer of polyamide |
| abstract |
A method of making a high molecular weight polyamide polymer, such as a 6/66 copolymer, using a reactant stream comprising at least one lactam and a cyclic oligomer. The stream is reacted with at least one diamine at elevated temperature to open the cyclic oligomer to produce an amide pre-polymer end-capped with amine groups. The pre-polymer is then reacted with at least one diacid at elevated temperature to form a polyamide 6/66 copolymer. Cyclic oligomers can be formed as a byproduct during standard polymerization of polyamide polymers from monomers such as caprolactam, hexamethylene diamine and adipic acid. |
| priorityDate |
2017-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |