http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-19980070760-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D11-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D317-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D317-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D11-04 |
| filingDate | 1998-01-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1998-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-19980070760-A |
| titleOfInvention | Method for preparing 1,3-dioxolane |
| abstract | The present invention (1) a step of reacting a formaldehyde or a formaldehyde-producing substance with ethylene glycol in the presence of an acid catalyst to form 1,3-dioxolane, (2) distilling the reaction mixture obtained in step I To obtain a distillate containing 1,3-dioxolane, (3) adding an alkaline substance to the distillate obtained in step II or distilling the distillate obtained in step II while adding the concentrated solution. (4) extracting 1,3-dioxolane from the concentrate obtained in step III in the presence of an alkylbenzene in which at least one carbon atom in the benzene ring is substituted with an alkyl group having 1 to 4 carbon atoms as an extractant. (5) distilling the extract obtained in step IV to dehydrate the extract, and (6) recovering high purity 1,3-dioxolane by distilling the dehydrated extract obtained in step V. Relates to a method for producing 1,3-dioxolane.n n n According to the invention, it is possible to produce 1,3-dioxolane, which is highly free of water and methanol, and the process of the invention does not cause corrosion of the equipment, provides a high yield, is simple and therefore industrially It is advantageous. |
| priorityDate | 1997-01-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 150.