| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_574bc8fd24e08fc5a292d012c5a28e48 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-0208
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-305
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-82 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-96
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-82
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C68-06 |
| filingDate |
2004-09-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9aa5405de707dfe98601a6a4555c2500
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1b7a276711204b56f1c5e485487c3191
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d9efc1f728ade97d725c1f42316b726a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_421bb7c53048554a13c97254239f871b |
| publicationDate |
2005-04-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2005089464-A |
| titleOfInvention |
Method for producing aliphatic oligocarbonate diol |
| abstract |
PROBLEM TO BE SOLVED: To provide an improved method for producing an aliphatic oligocarbonate diol by transesterifying dimethyl carbonate (DMC) with an aliphatic diol. The present invention relates to an ester by continuously introducing dimethyl carbonate into the liquid phase of a reaction mixture and continuously removing methanol formed as a gaseous methanol / dimethyl carbonate mixture from the reaction mixture by distillation. At the completion of the step of reacting dimethyl carbonate with the diol component at a pressure of 3 to 6 bar and a temperature of 100 to 200 ° C. in the presence of an exchange catalyst, and completion of continuous metering of dimethyl carbonate, the temperature of the reaction mixture is increased to 190 ° C. The pressure is reduced to atmospheric pressure so that the methanol / dimethyl carbonate mixture is distilled at the same time. After reaching atmospheric pressure, the pressure is further reduced and the pressure reaches 100 mbar or less in the reaction mixture. Of an oligocarbonate diol including a step of introducing an inert gas stream into It relates to the manufacturing method. [Selection figure] None |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-7109442-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2020502335-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-102442456-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20190095299-A |
| priorityDate |
2003-09-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |