http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114085375-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_050520a729263cc88748f23d50c360dd http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5cab5aa23bd3adc532b549fa25e60057 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-14 |
| filingDate | 2020-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5d175e29eedb3ab3d0c8c95638a5c34d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_83df06f862ac4a32f1d3d19a389b7679 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9e889eea6e47e709fa0dc347ad7b445b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_371d45d0b0206ce23552d309bb82bbf4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_847ba1e4d3fa2f2761e82e22cd913e8e |
| publicationDate | 2022-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114085375-A |
| titleOfInvention | A kind of synthetic method of narrow molecular weight distribution polyamide |
| abstract | The invention discloses a method for synthesizing polyamide with narrow molecular weight distribution. The method comprises the steps of adding raw materials including nylon salt, water and diamine into a reaction kettle, raising the temperature to 180-240° C., at 0.2-1.8 MPa. React under pressure for 1.0 to 3.0 hours, release the pressure to normal pressure; then heat up to 240 to 265 ° C, first react at normal pressure for 1.0 to 3.0 hours, and then under pressure of ‑0.04 to ‑0.08MPa, react for 0.5 to 3.0 hours, that is have to. In the method, nylon salt is used as the main reactant, and diamine is introduced as a regulator, which can effectively inhibit the decomposition of nylon salt at high temperature, reduce the polymerization reaction pressure, neutralize the dibasic acid generated by the decomposition of nylon salt, and also play a role in The role of molecular weight regulators can obtain polyamide products with narrower molecular weight distribution, more stable viscosity and better quality. |
| priorityDate | 2020-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 36.