http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102585216-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ae86e713ffd199f44969f9c078fea5fc |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-28 |
| filingDate | 2012-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d71f9291a52ac48a54ebd96301fc3298 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7500d6b17a6469c28394ebad5c5b431a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3158c80bf95b133f259e0be083b0b71f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_58f44d2173fee18b3df604a7fc520655 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b02727a56b814f331a3e172c6e5767e8 |
| publicationDate | 2014-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102585216-B |
| titleOfInvention | Method and equipment for nylon 66 short-flow continuous polymerization |
| abstract | The invention relates to a method and equipment for nylon 66 short-flow continuous polymerization. The method comprises the steps of carrying out heating, evaporation, concentration and polycondensation of 30-70% of a nylon 66 salt solution in a normal pressure pre-polypolycondensation tower by adopting a reaction distillation method to obtain a prepolymer with a polymerization degree of 5-50 (preferably 20-40) and equimolar terminal carboxy group and terminal amine group, and allowing the prepolyer to directly produce a polymer with a polymerization degree meeting technical indicators without flash distillation. A falling film devolatilization method is adopted in the polycondensation kettle to accelerate distillation out of condensation water, reduce reaction temperature, shorten reaction time and reduce gel; and the falling liquid film is used to seal and cover the kettle wall to avoid scarring of the kettle wall. Compared with the traditional nylon 66 continuous polymerization device, the method and the equipment provided by the invention has the advantages of short process, large single line scale, less investment, low operating cost, good product quality, long continuous operation cycle, and environmental friendliness. |
| priorityDate | 2012-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.