http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009176934-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b1dc0d460a063315ceaaf3223b851b12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6b89e909e6f439611dcf4fc20683b160 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-31862 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F214-26 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L27-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F214-26 |
| filingDate | 2009-02-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_86f4f3f57ad4cf087b6022f178107ee5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c794b515f539b596e8a5325cd8f1ea6b |
| publicationDate | 2009-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2009176934-A1 |
| titleOfInvention | Copolymers of tetrafluoroethylene |
| abstract | A polymerization process for producing a tetra-fluoroethylene copolymer, and the copolymer produced thereby, are provided. The copolymer is of the dispersion/fine powder type and contains polymerized tetrafluoroethylene monomer units and co-polymerized higher homologous comonomer units having the formula (C n F (2n+1) )CH═CH 2 , wherein 6≦n<10, in which the primary particles are believed to have a core and shell structure and the polymerized comonomer units are present in an amount from 0.01 mol % to 0.3 mol %, based upon total copolymer composition. The copolymer has a raw dispersion primary particle size (RDPS) of less than 0.210 microns coupled with a standard specific gravity (SSG) of less than 2.143. Preferably the copolymer has comonomer units present in an amount from 0.05 mol % and 0.25 mol % and the RDPS is within the range between 0.178 microns and 0.200 microns, coupled with a SSG of less than 2.140. Copolymers produced according to the invention, (perfluorohexyl)ethylene (PFHE) and (perfluorooctyl)ethylene (PFOE), may be shaped into the form of 0.1 inch diameter expanded beading, which expanded beading can have a break strength of at least 10.0 lbs, and which may exceed 13.0 lbs. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2012184665-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8969432-B2 |
| priorityDate | 2005-07-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 60.