http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2003104955-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d9d3e7acaa8f222171094c47408fbfc1 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C315-04 |
| filingDate | 2001-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9fdcc4a35354990ad3074f9ea876477e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2b44c63809e367437399d80e4743fdf1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_70001ef7b2a78ee31737bb094d5778b3 |
| publicationDate | 2003-04-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2003104955-A |
| titleOfInvention | Process for producing dihydroxydiphenyl sulfone isomer mixture |
| abstract | PROBLEM TO BE SOLVED: To provide an isomerization reaction of 4,4'-dihydroxydiphenylsulfone in a short time to reach an isomerization equilibrium, and to provide dihydroxy containing more 2,4'-dihydroxydiphenylsulfone. A method for producing a diphenylsulfone isomer mixture is provided. SOLUTION: 4,4'-dihydroxydiphenylsulfone or a dihydroxydiphenylsulfone isomer mixture containing 4,4'-dihydroxydiphenylsulfone in an amount of 85% by weight or more is heated in the presence of phenol and sulfonic acid. Production method of 2,4'-dihydroxydiphenylsulfone-containing dihydroxydiphenylsulfone isomer mixture. |
| priorityDate | 2001-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.