http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2022161191-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_20d3042eb4ea7c9afd525aa89373349d |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-0259 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-0281 |
| filingDate | 2021-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_df9ff20d9c26709e240fedc0102b9ebb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f2be4487902d329fe4832e18d43069d5 |
| publicationDate | 2022-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2022161191-A |
| titleOfInvention | Method for producing sulfidating agent and polyarylene sulfide resin |
| abstract | A method for producing a high-purity sulfidation agent by removing alkali metal carbonates from wastewater discharged from water washing or hot water washing after a polymerization reaction of polyarylene sulfide resin (PAS resin) is provided. SOLUTION: A step of adding a metal salt containing at least one group 2 element to a mixture containing at least a PAS resin, an alkali metal halide, an alkali metal carbonate and a sulfidating agent, and bringing the mixture into contact with water. to produce a water-insoluble carbonate, followed by solid-liquid separation to obtain an aqueous solution containing at least an alkali metal halide and a sulfidating agent; a step of adding an acid to the aqueous solution to produce hydrogen sulfide; A method for producing a sulfidation agent, comprising the steps of: recovering the produced hydrogen sulfide; and reacting the recovered hydrogen sulfide with an alkali metal hydroxide; and a PAS resin using the sulfidation agent. manufacturing method. [Selection figure] None |
| priorityDate | 2021-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 126.