http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-2927541-T3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D9-0004 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C315-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D9-0045 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C315-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C317-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D9-0022 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C315-02 |
| filingDate | 2020-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bae5e674da12574454d84df6e47dc9f7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_87ffac502a6ca69d69d0583889fbcd52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e4498c6ba95a18f2b436e86cc96ea286 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d074222162c21c078d06cbe25f1e8f85 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e15b9e3ff376ecc7c230773ad9cdc558 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ad8cf8e26e61c4ca25cc063d54da029a |
| publicationDate | 2022-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-2927541-T3 |
| titleOfInvention | Process for producing 4,4-dichlorodiphenyl sulfone |
| abstract | The invention relates to a process for producing 4,4'-dichlorodiphenylsulfone, comprising: (I) reacting thionyl chloride, chlorobenzene and aluminum chloride to form an intermediate reaction product and hydrogen chloride; (II) mixing aqueous hydrochloric acid and the intermediate reaction product to obtain an organic phase comprising 4,4'-dichlorodiphenyl sulfoxide and an aqueous phase; (III) cooling the organic phase to a temperature below the saturation point of 4,4'-dichlorodiphenyl sulfoxide to obtain a suspension; (IV) solid-liquid separation of the suspension to obtain crystallized 4,4'-dichlorodiphenyl sulfoxide and mother liquor; (V) washing the crystallized 4,4'-dichlorodiphenyl sulfoxide with a carboxylic acid to obtain carboxylic acid-wet 4,4'-dichlorodiphenyl sulfoxide; (VI) reacting the washed 4,4'-dichlorodiphenyl sulfoxide and an oxidizing agent in a carboxylic acid as a solvent to obtain a reaction mixture comprising 4,4'-dichlorodiphenylsulfone and carboxylic acid; (VII) separating the reaction mixture comprising 4,4'-dichlorodiphenylsulfone and carboxylic acid into a residual moisture comprising 4,4'-dichlorodiphenylsulfone as crude product and a liquid phase comprising carboxylic acid. (Automatic translation with Google Translate, without legal value) |
| priorityDate | 2019-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.