Ethylene/tetrafluoroethylene copolymer composition

Details Ethylene/tetrafluoroethylene copolymer composition Ethylene/tetrafluoroethylene copolymer composition

C - Chemistry, Metallurgy

08

L

C08L 27/18 (2006.01) B29B 7/00 (2006.01) C08L 23/08 (2006.01)

Patent

CA 2582786

To provide an ethylene/tetrafluoroethylene copolymer composition having a high melt flowability while the mechanical properties of the obtainable molded product are maintained. The ethylene/tetrafluoroethylene copolymer composition (C) has a melt viscosity of from 80 to 500 Pa.cndot.s, preferably from 100 to 300 Pa.cndot.s and a tensile elongation of from 200 to 500%, preferably from 350 to 450%. The copolymer composition (C) is obtainable by melt kneading an ethylene/tetrafluoroethylene copolymer (A) having a low melt viscosity of from 60 to 400 Pa.cndot.s, preferably from 80 to 300 Pa.cndot.s and an ethylene/tetrafluoroethylene copolymer (B) having a melt viscosity higher than this i.e. from 600 to 10,000 Pa.cndot.s, preferably from 1,000 to 7,000 Pa.cndot.s in a mass ratio of (A)/(B) = 50/50 to 99/1, preferably (A)/(B) = 60/40 to 97/3.

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