http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H07206850-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_03627f82d4edc6567f9627df6efdde5d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D317-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-322 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D317-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B63-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D319-06 |
| filingDate | 1994-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a038301592fc37ba64eb211f89363012 |
| publicationDate | 1995-08-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H07206850-A |
| titleOfInvention | Purification method of cyclic formal |
| abstract | (57) [Summary] [Purpose] To provide a purification method for efficiently removing water from a mixture of cyclic formal and water, which are difficult to separate water, to obtain a high-purity cyclic formal with very little water and impurities. To do. [Structure] When a mixture containing cyclic formal and water is supplied to a distillation column to purify the cyclic formal, a hydrophilicity having a boiling point in the range of 180 to 250 ° C. is provided above the supply position of the mixture in the distillation column. While supplying the solvent (A), a purified cyclic formal (X) having a water content of 200 ppm or less is supplied further above the position where the hydrophilic solvent (A) is supplied, and distilled to obtain a purified cyclic formal. A method for purifying cyclic formal, which is characterized in that it is taken out as a distillate. |
| priorityDate | 1994-01-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.