| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_424db9d56b06a23aed410fcf5df652f3 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-007 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-00 |
| filingDate |
1999-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2000-10-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_050abd85579e6e48b47b9ca4482690aa
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_64ebecdb4cd371f4876b2f7ad0c99271
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cd6c171f54af1de5467932c43b2f320c |
| publicationDate |
2000-10-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6127517-A |
| titleOfInvention |
Polymerization of hexafluoropropene oxide |
| abstract |
Before hexafluoropropene oxide (HFPO) is polymerized in a polymerization initiator solution of a polymerization initiator of the formula: CSOCF2-Rf-CF2OCs wherein Rf is a perfluoroalkylene group which may have an ether bond in an aprotic polar solvent, the initiator solution is treated by adding a perfluoroolefin thereto at a sufficient temperature for the removal of protonic substances, cesium fluoride and hydrogen fluoride. This simple treatment restrains chain transfer reaction, and the process is successful in producing a difunctional HFPO polymer having a high degree of polymerization while suppressing formation of a monofunctional HFPO polymer. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110003422-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6469217-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102341424-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6660828-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102341424-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6855775-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006199942-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2011092665-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8653229-B2 |
| priorityDate |
1998-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |