http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0043499-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F214-265 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F214-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M15-244 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F14-00 |
| filingDate | 1981-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_86f4f40785f0b20956d4c3ce8d78dd6f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_efe669b6e5ff7d1f01d1828e609cca77 |
| publicationDate | 1982-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0043499-A1 |
| titleOfInvention | Process for the preparation of aqueous colloidal dispersions of copolymers of the tetrafluoroethylene-ethylene type |
| abstract | (X = Cl, Br, COOH, COOR, COCH 3 , CH 3 , C 2 H 5 , C 3 H 7 ; R = C 1 -C 4 -Alkyl), und b) einer die Dispersion stabilisierenden Verbindung der Formeln (Y = COONH 4 , COOH, CH 3 , CH z OH, CH z COOH, CH 2 COONH 4 ) durchgeführt. b) kann zusätzlich ein Ammoniumsalz einer anorganischen Nichtmetallsäure enthalten, zum Beispiel Ammoniumchlorid oder -fluorid. Bevorzugt hergestellt werden Ter- oder Quaterpolymere, enthaltend neben Tetrafluorethylen und Ethylen als Dritt- und/oder Viert-Comonomere vorzugsweise Hexafluorpropylen und/oder ein «sperriges» Vinylmonomeres. Die so hergestellten Copolymeren-Dispersionen weisen sehr geringe Koagulatanteile auf, sind sehr stabil, und die Copolymeren besitzen verarbeitungsgerechte Schmelzindices. Sie können zu Überzügen und Formkörpern verarbeitet werden. There is an improved process for the preparation of aqueous, colloidal dispersions of copolymers consisting of at most 60 mol% of units of tetrafluoroethylene, 60 to 40 mol% of units of ethylene and 0 to 15 mol% of units of at least one other Tetrafluoroethylene and ethylene copolymerizable, a-olefinic monomers, described in the presence of manganese compounds as a catalyst. The emulsion polymerization is carried out in the aqueous phase in the presence of a) a chain transfer agent of the formula (X = Cl, Br, COOH, COOR, COCH 3 , CH 3 , C 2 H 5 , C 3 H 7 ; R = C 1 -C 4 alkyl), and b) a compound of the formula which stabilizes the dispersion (Y = COONH 4 , COOH, CH 3 , CH z OH, CH z COOH, CH 2 COONH 4 ). b) may additionally contain an ammonium salt of an inorganic non-metallic acid, for example ammonium chloride or fluoride. Ter or quater polymers are preferably prepared, containing, in addition to tetrafluoroethylene and ethylene as third and / or fourth comonomers, preferably hexafluoropropylene and / or a “bulky” vinyl monomer. The copolymer dispersions produced in this way have very low coagulum fractions, are very stable, and the copolymers have melt indices suitable for processing. They can be processed into coatings and moldings. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0226116-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0119880-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0226116-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0197490-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0961047-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6579960-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4564652-A |
| priorityDate | 1980-06-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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