Fluorinated copolymer
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United States of America Patent
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Jan 30, 2018
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app pub date -
Nov 17, 2016
filing date -
Jun 27, 2014
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Abstract
A fluorinated copolymer excellent in adhesion and elongation deformation processability. This fluorinated copolymer has carbonyl groups, its melting point is from 120 to 230° C., the ratio (X/W) of the melt tension X (N) to the load W (N) at the time of measuring the melt tension X, is from 0.5×10−4 to 2.0×10−4, it contains units derived from the following monomers (a), (b), and (c), the molar ratio of the units derived from the monomer (a) to the units derived from the monomer (b) is from 30/70 to 70/30, and the total content of the units derived from the monomer (a) and the units derived from the monomer (b) is from 80 to 99.995 mol % based on the total of all units (a), (b) and (c): Monomer (a): tetrafluoroethylene; Monomer (b): ethylene; Monomer (c): a monomer having two or more polymerizable carbon-carbon double bonds.
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