Copolymer and composition containing same
AssigneeAGC Inc.
InventorsShigeru Aida, Daisuke Taguchi
Life of this patent
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Abstract
To provide a copolymer capable of producing a molded article excellent in strength at a high temperature. A copolymer comprising ethylene units, tetrafluoroethylene units and other monomer units, wherein to the sum of ethylene units and tetrafluoroethylene units, the ethylene units are from 49 to 40 mol % and the tetrafluoroethylene units are from 51 to 60 mol %; to all units in the copolymer, other monomer units are from 2.6 to 6.0 mol %; the melting point is at least 230° C.; and the melt flow rate is from 1 to 15 g/10 min.
Claims14
A copolymer comprising units derived from ethylene, units derived from tetrafluoroethylene, and units derived from a monomer other than ethylene and tetrafluoroethylene, wherein
- to a sum of the units derived from ethylene and the units derived from tetrafluoroethylene, a proportion of the units derived from ethylene is from 49 to 40 mol %, and a proportion of the units derived from tetrafluoroethylene is from 51 to 60 mol %,
- to all units in the copolymer, a proportion of the units derived from said monomer other than ethylene and tetrafluoroethylene is from 2.6 to 6.0 mol %,
- a melting point of the copolymer is at least 230° C., and
- a melt flow rate of the copolymer measured in accordance with ASTM D3159 under conditions of a temperature of 297° C. and a load of 49 N, is from 1 to 15 g/10 min.
Dependencies are inferred from the claim text.