http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4040674-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2800-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25B13-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-06 |
| filingDate | 1990-12-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cf20275ae8907c705651d3da42687cb0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_09a71086f0af477170714a39a9de153e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_486b2fb1a4061ddb376f76b2364ff4a5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e3dfbb0968ddc447bb56726b25b3ad6b |
| publicationDate | 1991-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-4040674-A1 |
| titleOfInvention | METHOD FOR PRODUCING FLUORIC COPOLYMERS WITH CARBONIC ACID GROUPS OR WITH GROUPS DERIVED FROM CARBOXYL FUNCTIONS |
| abstract | Perfluorinated polymers (I) contg. monomer units of formula (II) (with m = 0-3; n = 2-10; X = COF) are produced by reaction of the corresp. polymer (III) contg. units of formula (II) (with X = CF2H) at 150-300 deg C with a gaseous oxidising agent (IV) which is capable of liberating iodine from acidified aq. KI soln. Pref. (I) also contain monomer units of formula CF2=CF-R (with R= F or 1-10C perfluoroalkyl, pref. F or CF3), and pref. F or CF3), and pref. also units of formula (II) (with m = 0-3; n = 1-10; X = CF3); pref. comonomer units are omega-H-perfluoropropyl perfluorovinyl ether (H-PPVE) and TFE, esp. pref. with perfluoropropyl perfluorovinyl ether (PPVE) as third comonomer; (IV) is a nitrogen oxide, or air, O2, ozone or a mixt.; polymers (I) (with X = COOH or X = CONH2) are produced directly by adding to (IV) an amt. of water vapour or NH3 which is equal to or greater than the mol. wt. of CF2H gps.. USE/ADVANTAGE - (I) (with COOH or carboxy derivs. as functional gps.) are useful for the prodn. of cation exchange membranes for chlor-alkali electrolysis, and for the prodn. of hydrophilic coatings on hydrophobic polymer surfaces. The invention provides a simpler, less expensive process for the prodn. of (I), compared with prior-art processes. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1043353-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1043353-A4 |
| priorityDate | 1989-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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