http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113980288-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F6-003 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D29-35 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G85-002 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F6-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G85-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D29-35 |
| filingDate | 2021-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-05-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-05-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113980288-B |
| titleOfInvention | A purification process and purification system of a polymer |
| abstract | The invention belongs to the technical field of polymer impurity removal, and provides a purification process and purification system for polymers. The purification process includes the following steps: firstly, a polymerization solution containing salt impurities is added to a precipitate to obtain polymer particles; then Under the condition of spraying the precipitant, after the polymer particles obtained in the above steps are extruded, the salt impurities in the polymer are removed to obtain a washed polymer; the salt impurities are dissolved in the precipitant; finally The purified polymer was obtained by removing the precipitate from the washed polymer obtained in the above step. The liquid content rate of the polymer particles after extrusion in the invention is low, the cross-contamination between the precipitation liquid and the washing liquid is reduced, the treatment cost and solvent loss of various washing liquids, and the discharge of waste water and waste liquid are greatly reduced. The process can be applied to the production process of polysulfone, polyphenylene sulfone, polyether sulfone and its copolymer, the production process of polyphenylene sulfide and its copolymer, the production of polyether ether ketone, polyaryl ether nitrile and its copolymer. process. |
| priorityDate | 2021-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 57.