| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6c8d4dc7bd1a30d8fda907fceaeb4e69 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-10 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-009
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-002 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-08 |
| filingDate |
2012-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9688f2f0a514cb7e24adf9f4a4482701
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1dafb0bff8756cdc0b9f9d4bdfb9307c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_16d39bd3a7656bfce79cec997de03750
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aef24a2af3286650425949d448537359 |
| publicationDate |
2018-06-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
MY-166427-A |
| titleOfInvention |
Method for producing tetrahydrofuran |
| abstract |
The present invention is concerned with a method for producing tetrahydrofuran including carrying out a dehydration cyclization reaction of 1,4-butanediol in the presence of an acid catalyst having a pKa value of not more than 4 within a reactor, wherein a raw material liquid containing 1,4-butanediol to be provided for the reaction contains from 0.01 to 0.35 % by weight of 2-(4-hydroxybutoxy)-tetrahydrofuran and 1 ppm by weight or more and not more than 1,000 ppm by weight of at least one of an amine and an amide in terms of a concentration as converted into a nitrogen atom. |
| priorityDate |
2011-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |