| 摘要 |
The claimed invention relates to a method for producing a melt-moldable tetrafluoroethylene copolymer containing repeating units (a) based on tetrafluoroethylene and repeating units (b) based on another fluoromonomer, wherein the amount of the repeating units (a), based on the total mass of the repeating units (a) and the repeating units (b), is from 97.3 to 99.5 mass %, and the volume flow rate of the copolymer is from 0.1 to 1000 mm3/s; the process including radical suspension-polymerization of tetrafluoroethylene and the fluoromonomer in an aqueous medium in the presence of a radical polymerization initiator and at least one chain transfer agent selected from the group consisting of methane, ethane, a hydrochlorocarbon, a hydrofluorocarbon and a hydrochlorofluorocarbon.
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