http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2004123600-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_24aca9ded2638ea793d05360dde7a4a0 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C39-08 |
| filingDate | 2002-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7e74e27c48c7a9fc203442ce56cd8978 |
| publicationDate | 2004-04-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2004123600-A |
| titleOfInvention | Method for removing impurities from dihydroxybenzene |
| abstract | An object is to improve the effect of removing impurities in dihydroxybenzene. SOLUTION: The first step is to subject crude dihydroxybenzene to distillation to obtain a section containing acetone from the low boiling side, and to obtain a section containing dihydroxybenzene from the high boiling side. Second step: distilling the section containing dihydroxybenzene To obtain a section containing dihydroxybenzene from the low boiling side and obtain a section containing heavy components from the high boiling side. Third step: After adding water to the section containing dihydroxybenzene, contact the extraction solvent Extraction and separation into an aqueous layer containing dihydroxybenzene and an oil layer containing impurities Fourth step: subjecting the aqueous layer containing dihydroxybenzene to distillation to obtain a section containing dihydroxybenzene and a section containing water [selection] Figure: None |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104529714-A |
| priorityDate | 2002-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.