| 摘要 |
Process for the preparation of tetrafluoroethylene (TFE) polymer-based dispersions having diameter average sizes in the range 0.005-0.06 mum, which comprises:a) preparation of an aqueous perfluoropolyether (PFPE) microemulsion;b) microemulsion feeding into the polymerization reactor, in such amounts so that the microemulsion perfluoropolyetheral oil phase is present in a concentration higher than 2 ml for liter of reaction medium;c) reaction medium feeding in the gaseous TFE polymerization reactor, optional addition of surfactants, stabilizers, comonomers, transfer agents;d) addition of the initiator, stabilizers, comonomers and transfer agents;e) discharge from the reactor of the polymeric latex.
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