http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100869060-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-50 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C39-15 |
| filingDate | 2003-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2008-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2008-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-100869060-B1 |
| titleOfInvention | Method for preparing 4,4'-biphenol |
| abstract | The present invention provides a method for continuously producing high-quality 4, 4'-biphenol in high yield by performing continuous debutylation reaction of TBBP using a multistage reactor disposed in series. n According to the present invention, a phenol, monoalkyl phenol, dialkyl phenol and trialkyl phenol (although alkyl consisting of these monoalkyl phenol, dialkyl phenol and trialkyl phenol) The number of carbon atoms of the alkyl group in the phenol is each independently 1 to 4 ranges. Dehydration of 3, 3 ', 5, 5'-tetra-t-butyl-4, 4'-biphenol in the presence of an acid catalyst in the reaction solvent while supplying at least 0.5 mole parts to each reactor as an addition solvent to 1 mole of biphenol In the method for producing 4, 4'-biphenol by continuously carrying out a butylation reaction, the addition solvent to the rear stage reaction tank is 4, 4'-, characterized in that the average number of alkyl groups is smaller than that of the addition solvent to the shear reaction vessel. A method for producing biphenols is provided. According to this method, 3, 3 ', 5, 5'-tetra-t-butyl-4, 4'-biphenol can be obtained in high yield under relatively mild reaction conditions. n n 4,4'-biphenol, 3,3 ', 5,5'-tetra-t-butyl-4,4'-biphenol, multistage reactor, debutylation reaction |
| priorityDate | 2003-01-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 61.