TFE-based thermoprocessable copolymers

摘要

TFE-based thermoprocessable copolymers having the following composition, expressed in percentage by moles on the total of the monomers: A) from 0.01 to 15% of the monomer of formula:
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ CF 2 =CFOCF 2 OCF 3 €ƒ€ƒ€ƒ€ƒ€ƒ(a); A1) tetrafluoroethylene from 99.99 to 85%; optionally B) one or more (per)fluorinated comonomers having at least one unsaturation of ethylene type, different from TFE;
the sum of the molar percentages A) + B) being such as to give polymers showing at least one melting peak at the thermogravimetric analysis (DSC).