FIELD: polymer materials.
SUBSTANCE: fluorine-containing copolymer is proposed, including tetrafluoroethylene units (a), ethylene units (b) and hexafluoropropylene units (c), and the content of hexafluoropropylene units (c) in the total number of monomer units is from 6 to 21 mol.%; the molar ratio of tetrafluoroethylene units (a) to the sum of tetrafluoroethylene units (a) and ethylene units (b) (a)/((a)+(b)) is from 0.40 to 0.54 and the melt flow rate, measured at 230°C and a load of 5 kg, is from 12 to 100 g/10 min.
EFFECT: expansion of the range of polymer materials.
6 cl, 1 tbl, 11 ex
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