METHOD FOR PRODUCING tetrafluoroethylene C 2 FTORSULFONILPERFTORETILVINILOVYM ether - a precursor of a proton conducting membrane methods emulsion copolymerization

摘要

1. A process for preparing a copolymer of tetrafluoroethylene and 2-ftorsulfonilperftoretilvinilovogo ether - the precursor of proton conducting membranes predemulgirovannoy by emulsion copolymerization in an aqueous microemulsion of stabilized perfluorinated surfactant using a redox initiator system and pH regulators, characterized in that for regulation or control composition or equivalent weight and the molecular weight of the resulting copolymer in a polymerizable formulation B Topics administered builder - perfluorinated hydrocarbon CC.2. The method of claim. 1, characterized in that the copolymerization process is carried out at a constant pressure of tetrafluoroethylene in the range 1.1-1.3 MPa and a temperature of 40-50 ° C to form a latex which is subjected to isolate sopolimera.3 coagulated. The method of claim. 1, characterized in that the microemulsion is prepared by ultrasonic dispersion 2 ftorsulfonilperftoretilvinilovogo ester with 5-10 wt.% C-perfluorinated hydrocarbon Savanoriu Str presence of 2.0-3.0 wt.% Ammonium perftornonaata with respect to 2-ftorsulfonilperftoretilvinilovomu efiru.4. . A method according to claim 1, characterized in that the process is carried out at a volume ratio of 2-ftorsulfonilperftoretilvinilovy ether phases + perfluorinated hydrocarbon CC- water from 1: 6 to 1: 12.5. The method of claim. 1, characterized in that the resulting latex to isolate the copolymer is coagulated by freezing, followed by separating the copolymer from the liquid fazy.6. The method of claim. 1, characterized in that the washing of the copolymer surfactant, the unreacted monomers and components