http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114729123-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_20d3042eb4ea7c9afd525aa89373349d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-0281 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-0259 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-0281 |
| filingDate | 2020-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_807b197419f342cc862971f861e98e45 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_73ba5ec62e55e12c6b05a65669504ffe http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cf407ad54aeabe9f560afc770e4061d1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e04ff48dc65d4b9b0b279a87cbfa5600 |
| publicationDate | 2022-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114729123-A |
| titleOfInvention | Polyarylene sulfide, its purification method and production method |
| abstract | Provided: a method for purifying PAS capable of efficiently reducing carboxyl alkylamino compounds in PAS by treating carboxyl alkylamino compounds in polyarylene sulfide (PAS) at a lower pressure without using a strong acid, and in PAS The production method of PAS with low carboxyl group-containing alkylamino compound. Specifically, there is provided a method for purifying PAS, and a method for producing PAS including this step, the method for purifying PAS including a step of reacting a polyhalogenated aromatic compound with a thioetherifying agent in an organic polar solvent The obtained crude reaction product containing PAS is desolvated to obtain a crude PAS-containing mixture; the crude PAS mixture is contacted with water and an oxygen atom-containing solvent, and the crude PAS is formed into porous particles with a specific surface area of 30 m 2 /g or more In the step of contacting the obtained porous particles with carbonated water, the content of the carboxyl group-containing alkylamino compound contained in the porous particles is in the range of more than 1000 [ppm] and 3000 [ppm] or less. |
| priorityDate | 2019-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 144.