http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2016236112-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f8877d26e7e712d48efb03a75bd073f3 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00018 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D319-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D319-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-26 |
| filingDate | 2016-04-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_030cce45bade98ae48ce32ab9561306b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_af911b582e9c330ee4114a890a7da04d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f60689f49004ffcafa4ba49301d04033 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_15371038927ccacc937a1ce7a8000f68 |
| publicationDate | 2016-08-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2016236112-A1 |
| titleOfInvention | Method for producing glycolide, which is provided with rectification step by means of gas-liquid countercurrent contact, and method for purifying crude glycolide |
| abstract | A method for producing glycolide provided with: step (1) wherein a GAO composition, which preferably contains a high-boiling-point organic solvent or a solubilizing agent, is supplied into a reactor and heated to a temperature at which a depolymerization reaction of the GAO occurs; step (2) wherein the heating is continued to subject the GAO to the depolymerization reaction, thereby producing glycolide; step (3) wherein glycolide is distilled out of the reactor; step (4) wherein the distillate is introduced into a rectifier and is rectified by means of gas-liquid countercurrent contact; and step (5) wherein glycolide is recovered. A method for purifying crude glycolide provided with: step (i) wherein a crude glycolide composition, which preferably contains a high-boiling-point organic solvent or a solubilizing agent, is supplied into a reactor and heated so that glycolide is distilled; step (ii) wherein the distillate is introduced into a rectifier and is rectified by means of gas-liquid countercurrent contact; and step (iii) wherein glycolide is recovered. A glycolide producing apparatus and a crude glycolide purifying apparatus, each of which is provided with a reactor and a rectifier. |
| priorityDate | 2012-11-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 159.