http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1491528-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e7962109cd4763907b82b66760cd0ae8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C315-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C315-00 |
| filingDate | 2002-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_31c31f0a8700f49e6eeccd6bd856e066 |
| publicationDate | 2004-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1491528-A1 |
| titleOfInvention | Process for producing 4,4-bisphenol sulfone |
| abstract | A process for producing 4,4'-bisphenol sulfone by reacting phenol with sulfuric acid, which includes conducting a dehydration reaction in a mixed solvent including an aliphatic saturated hydrocarbon having a boiling point of 175°C or higher and mesitylene, and finally distilling off the mesitylene from the reaction system, or includes conducting the reaction in a solvent including an aliphatic saturated hydrocarbon in a reaction vessel equipped with a fractionating device. Thus, 4,4'-bisphenol sulfone can be produced in high yield with a high operating efficiency. Also, provided is a process for easily producing 4,4'-bisphenol sulfone having a high purity which includes conducting the reaction in a solvent containing an aliphatic saturated hydrocarbon, subsequently adding a C 1-3 alcohol to the reaction mixture, separating an alcohol layer, and recrystallizing the 4,4'-bisphenol sulfone from the alcohol layer. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11634386-B2 |
| priorityDate | 2002-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 172.