http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105367692-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2500-02 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F114-26 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F114-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-26 |
| filingDate | 2015-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-11-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-11-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105367692-B |
| titleOfInvention | The preparation method of low molecular weight tetrafluoro ethylene resin |
| abstract | A kind of preparation method of low molecular weight tetrafluoro ethylene resin is disclosed, it comprises the following steps：(1) in the presence of water and 500 5000ppm fluorine-containing surfactants, 200 1000ppm carboxylic acids or its salt, the anionic non-fluorinated surfactants of 100 1000ppm under 60 100 DEG C of temperature, 5 2.8MPa pressure polymerizing tetrafluoroethylene monomer 23 hours, obtain solid content be 10 30 weight % polytetrafluoroethyldispersions dispersions；The fluorine-containing surfactant is selected from C 2 F 5 OCF 2 CF 2 OCF 2 COONH 4 ；XCF 2 CF 2 (O)MCF 2 CF2OCF 2 COOA, wherein X are hydrogen or fluorine atom, and A is selected from hydrogen atom, alkali metal or ammonium ion；And CF 3 ‑(OCF 2 ) m ‑O‑CF 2 X, wherein m=1 3, X are hydroxy-acid group or its salt；The anionic non-fluorinated surfactant is selected from sulfonic acid type surfactant and sulfuric acid type surfactant；(2) inorganic acid is added into obtained polytetrafluoroethyldispersions dispersions, condenses polyflon；(3) neutralize, wash, and dry, obtain the polyflon of low molecule amount. |
| priorityDate | 2015-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 70.