| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ee1c19da359446fb5c4f0458a57b783d |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F6-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F114-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F6-22 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F114-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-16 |
| filingDate |
2014-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7640873af08dc8985ef9fe7837cd1fd0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6bd42121ed44c014a303c58c42f139f8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_85a38be043ba2e64cce4ec8f0bc151a2 |
| publicationDate |
2014-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2014343239-A1 |
| titleOfInvention |
Process for producing polytetrafluoroethylene fine powder |
| abstract |
To provide a process for producing a PTFE fine powder having a high bulk density, whereby the concentration of non-coagulated PTFE in coagulation wastewater is low. n Tetrafluoroethylene is emulsion-polymerized in the presence of an aqueous medium, at least one fluorinated emulsifier selected from the group consisting of a C 4-7 fluorinated carboxylic acid having from 1 to 4 etheric oxygen atoms in its main chain, and its salts, and a radical polymerization initiator, to produce a polytetrafluoroethylene emulsion; the obtained polytetrafluoroethylene emulsion is adjusted to a polytetrafluoroethylene concentration of from 10 to 25 mass %, followed by coagulation and stirring at a coagulation temperature of from 5 to 18° C. to separate a wet-state polytetrafluoroethylene fine powder; and the obtained wet-state polytetrafluoroethylene fine powder is dried to produce a polytetrafluoroethylene fine powder. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10644339-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11084895-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10688448-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10944121-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111349252-A |
| priorityDate |
2012-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |