http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S56108722-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_385752f237551ca1b257f160a0f2434b |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C31-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C27-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C27-00 |
| filingDate | 1980-01-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e285e3f1248f0a8e2a79f649e4d61f41 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2b4e836ada9af22f89aa6b8f5f1506f7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_08a49b3b8e284d757f7c97d955daa9af |
| publicationDate | 1981-08-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S56108722-A |
| titleOfInvention | Preparation of 1,4-butanediol and tetrahydrofuran |
| abstract | PURPOSE: To prepare the titled compounds together in any ratio, by subjecting acetic ester of 1,4-butanediol to ester cxchange reaction while controlling an amount of methanol to give a desired ratio of 1,4-butanediol, followed by subjecting the residue to ring formation in the presence of an acidic catalyst. n CONSTITUTION: Acetic ester of 1,4-butanediol from the pipe 1 is subjected to vapor- liquid contact reaction with methanol from the pipe 2 in the presence of an acidic or basic catalyst in the first reactor column I and partially converted into 1,4- butanediol (in the reaction an amount of methanol to be used is limited, to make a ratio corresponding to the production ratio of the desired compounds). A mixture of methyl acetate and methanol from the pipe 3 is distiled, and simultaneously the reaction mixture is sent from the pipe 4 to the first distillation column II to distill away low-boiling substances and sent to the second distillation column III to give 1,4- butanediol from the pipe 9. While the distillate is sent to the second reactor IV and subjected to ring formation in the presence of an acidic catalyst to give tetrahydrofuran from the pipe 11 of the third distillation column V. n EFFECT: Water having large latent heat of evaporation is not needed to be used directly. n COPYRIGHT: (C)1981,JPO&Japio |
| priorityDate | 1980-01-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.