http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5097074-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_14cb9c2056932df3a31b10ffa53d33de |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C315-06 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C315-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-22 |
| filingDate | 1988-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1992-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_45f0b92936e6b0e08baf34f338cb6944 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8750875db5af253eee89690147c0f8bb |
| publicationDate | 1992-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5097074-A |
| titleOfInvention | Process for purifying 4,4'-dihydroxydiphenylsulfone |
| abstract | PCT No. PCT/JP88/00813 Sec. 371 Date Apr. 10, 1989 Sec. 102(e) Date Apr. 10, 1989 PCT Filed Aug. 17, 1988 PCT Pub. No. WO89/01469 PCT Pub. Date Feb. 23, 1989.The invention provides a process for purifying crude 4,4'-dihydroxydiphenylsulfone characterized by dissolving the crude 4,4'-dihydroxydiphenylsulfone in an aqueous solution of a basic substance, precipitating a mono-salt of 4,4'-dihydroxydiphenylsulfone from the resulting solution by salting out, separating the salt off and subsequently treating the salt with an acid, and also porovides a process for preparing a mono-salt of 4,4'-dihydroxydiphenylsulfone characterized by dissolving crude 4,4'-dihydroxydiphenylsulfone in an aqueous solution of a basic substance, precipitating a mono-salt of 4,4'-dihydroxydiphenylsulfone from the resulting solution by salting out, and separating the salt off. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5767318-A |
| priorityDate | 1987-08-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 64.