Ethylene fluoro-containing copolymers

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 214/26 (2006.01) C08F 210/02 (2006.01) C08F 214/18 (2006.01) C08F 214/24 (2006.01)

Patent

CA 2209532

Ethylene fluoro-containing copolymers of the ECTFE and ETFE type, optionally in the presence of a third como-nomer in amount comprised between 0.1 and 10% by moles, having a viscosity between 10 2 and 10 5 Pa.sec with shear rates of 1 sec-1 measured at the temperature of about 30°C higher than the second melting temperature, and having a rheologic curve in the diagram shear viscosity/shear-rate with a slope higher than 200, calculated as ratio between the viscosity in Pa.sec and the shear-rate in sec-1 in the shear-rate range comprised between 1 and 10 sec-1, and having a processability zone with shear-rate values higher than 10 s-1.

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