http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109810213-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-54 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F114-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F214-22 |
| filingDate | 2018-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109810213-B |
| titleOfInvention | Fluorine-containing polymer in water/supercritical carbon dioxide mixed system and preparation method thereof |
| abstract | The invention relates to a fluorine-containing polymer under a water/supercritical carbon dioxide mixed system and a preparation method thereof. The preparation method comprises the following steps: and carrying out polymerization reaction on the fluorine-containing vinyl comonomer and an initiator under a water/supercritical carbon dioxide mixed system to obtain the fluorine-containing polymer. The invention uses the water/supercritical carbon dioxide lower mixing system as a medium, can control the problems of heat and viscosity existing in bulk and solution polymerization, improves the production efficiency, and greatly improves the molecular weight compared with the simple polymerization of the supercritical carbon dioxide; at the same time, the use of fluorine-containing emulsifier and a large amount of chlorofluorocarbon solvent medium can be avoided. In addition, the fluorine-containing polymer prepared by the method can be separated from an aqueous phase, the product purity is high, the post-treatment is simple, the yellowing is small, the melt index is low, the processing is easy, and the molecular weight distribution coefficient (PDI) of the fluorine-containing polymer is usually between 1.5 and 2.5 and is smaller than that of various reported methods. |
| priorityDate | 2018-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 70.