http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2011515552-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-226 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-10 |
| filingDate | 2009-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2011-05-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2011515552-A |
| titleOfInvention | Polymerization of hexafluoropropylene oxide |
| abstract | A method for oligomerizing hexafluoropropylene oxide (HFPO), wherein the sum of dimer, trimer, tetramer, pentamer, and hexamer is obtained by polymerizing HFPO. Less than 20% by weight of the oligomer, other than the dimer, trimer, tetramer, pentamer, and hexamer (remaining oligomers) having an average molecular weight in the range of 1100 to 4000 g / mol. Said process comprising a catalyst selected from hexafluoropropylene oxide (HFPO) and potassium fluoride (KF) and di-, tri- or tetra-ethylene glycol-dimethyl ether at a temperature of -30 ° C to + 50 ° C A perfluorinated aliphatic or aromatic hydrocarbon with more than 3 and less than 12 C atoms, optionally containing polar groups but free of chlorine or bromine, or more than 3 and Controlled in the presence of a solvent selected from partially fluorinated aliphatic or aromatic hydrocarbons having less than 2 C atoms, optionally containing polar groups but free of chlorine or bromine Characterized in that it comprises contacting at a pressure of less than 3 bar by continuous monomer addition or addition of one or two portions (shots) of monomer. |
| priorityDate | 2008-03-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 93.