http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102532526-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e2e880562e6c4d0109aaf9f7d12d510 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-46 |
| filingDate | 2011-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a3dd8c804073ca503de1e0523717d498 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a82bf895ff5d81dfb48336c3ac6ef45a |
| publicationDate | 2013-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102532526-B |
| titleOfInvention | Continuous polymerization production process of high-viscosity polyamide 6 |
| abstract | The invention relates to a continuous polymerization process of high-viscosity polyamide 6, comprising the following steps of: preparing caprolactam with de-ionized water; pre-heating the mixed caprolactam to a temperature in a range of 220+/-30 DEG C by a pre-heater and conveying the mixed caprolactam into a pre-polymerizer by a feeding pump to carry out hydrolyzed ring opening and pre-polymerization on the caprolactam, wherein the pressure of the ring opening and the pre-polymerization is 2.50+/-0.50 bar, the temperature is in a range of 270+/-15 DEG C and the flow of the caprolactam is 2200+/-500 kg/h; then, discharging materials into a post-polymerizer to carry out post-polymerization to obtain a polymer melt, wherein the pressure of the post-polymerization is 0.35+/-0.25 bar and the temperature is 250+/-30 DEG C; treating the polymer melt by a polymer filter, a casting strip head, an underwater granulator and a vibrating screen to obtain slices; adding the slices into a pre-extracting water pot to carry out pre-extraction with hot water at the temperature in a range of 115+/-10 DEG C; then, conveying the treated slices into an extracting tower and extracting with the hot water at the temperature in a range of 100+/-20 DEG C; conveying the extracted slices into a drying tower and carrying out counter-current drying by nitrogen gas; drying at the temperature in a range of 120+/-30 DEG C and discharging the dried slices into a slice cooling bin; and conveying the cooled slices into a slice storage bin and a slice packaging bin by the nitrogen gas and packaging to obtain the high-viscosity polyamide 6 slices with the relative viscosity of 3.4-4.0. |
| priorityDate | 2011-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.