http://rdf.ncbi.nlm.nih.gov/pubchem/patent/TW-396176-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6c8d4dc7bd1a30d8fda907fceaeb4e69 |
| 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/C08G69-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-16 |
| filingDate | 1996-10-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2000-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_367f12f02f7d2696df53232e910c51b5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_76e10f47549353a6c594e6a4e7a3d2ab http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_86d9642038b27e2bf9342ee66fc8a4bc |
| publicationDate | 2000-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | TW-396176-B |
| titleOfInvention | Method for manufacturing polyamide resin from caprolactam |
| abstract | An effective method used in industry to produce high quality polyamide resin is disclosed. Polyamide resin with water is extracted after polymerization of caprolactam in the presence of water. The extracted aqueous solution containing inactive caprolactam and its low molecular weight materials are condensed. Then, the condensate is polymerized by adding an additional amount of caprolactam. The improvement contains (a) processing ring-opening reaction of the cyclic dimer in the above cyclic low polymerized caprolactam with a reaction rate over 15%. Then, a polymerization reactor is charged into or the aqueous solution is concentrated until the water partial pressure is over 10 kg/cm<2>G and the temperature is over 230 degree C. (b) Additional amount of caprolactam are added to the polymerization reactor. Repeat the polymerization procedures of caprolactam to obtain polyamide resin. |
| priorityDate | 1995-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.