| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e892168f5e162ca21fb6c375fdb5155
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_671b303e1370490e5cd17d0b17ac1df7 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-582 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C315-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C315-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C315-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C315-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-22 |
| filingDate |
2001-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9e29dfd663a06d2405f26abe4801a153
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_40c72a1203fd681d7bed9959df698322 |
| publicationDate |
2001-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-0179163-A1 |
| titleOfInvention |
Semi-continuous method for producing 4,4'-dihydroxydiphenylsulfone |
| abstract |
The invention relates to a semi-continuous method for producing 4,4-dihydroxydiphenylsulfone, comprising the following steps: (a) reacting phenol with a sulfonating agent; (b) suspending the resulting crude product in hot water which is at least 40 DEG C and which is free from inert organic solvents and can contain residual amounts of unreacted phenol, and filtering off the product; and (c) returning the resulting waste streams containing the educt and/or product to the production process. Step (b) is carried out using the crude product and water in a weight ratio of 85:15 to 55.45. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6974886-B2 |
| priorityDate |
2000-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |