http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2930201-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_424db9d56b06a23aed410fcf5df652f3 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-54 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-007 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D15-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L71-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-46 |
| filingDate | 2015-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cd6c171f54af1de5467932c43b2f320c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c18a851e25d99ff0fd6d1b35d70529d3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fcd90b8cdc6946014983237b3ac8da27 |
| publicationDate | 2015-10-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-2930201-A1 |
| titleOfInvention | Method for preparing a composition comprising perfluoropolyether having a hydroxyl group at one terminal |
| abstract | An object of the present invention is to provide a method for efficiently and highly selectively preparing a composition comprising perfluoropolyether having a hydroxyl group at one terminal at a higher ratio. The present invention provides a method for increasing a ratio of perfluoropolyether having a hydroxyl group at one terminal, relative to a total amount of the perfluoropolyether having a hydroxyl group at one terminal and perfluoropolyether having hydroxyl groups at both terminals in a composition comprising these perfluoropolyethers, wherein the method comprises a step of subjecting the composition to chromatography in which a moving phase is supercritical or subcritical state carbon dioxide of the specific temperature and the specific pressure, and a stationary phase is silica gel to thereby collect a fraction containing the perfluoropolyether having a hydroxyl group at one terminal at a higher ratio. Further, present invention provides for increasing a ratio of perfluoropolyether having a hydroxyl group at one terminal, relative to a total amount of the perfluoropolyether having a hydroxyl group at one terminal, perfluoropolyether having hydroxyl groups at both terminals and perfluoropolyether having no hydroxyl group at any terminal perfluoropolyether, in a composition comprising these perfluoropolyethers, wherein the method comprises a step of subjecting the composition to chromatography in which a moving phase is supercritical or subcritical state carbon dioxide of the specific temperature and the specific pressure, and a stationary phase is silica gel to thereby collect a fraction containing the perfluoropolyether having a hydroxyl group at one terminal at a higher ratio. |
| priorityDate | 2014-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 88.