The hexafluoropropylene from 80 99 percentages by weight,

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a low-molecular-weight hexafluoropropylene-olefinic cotelomer.;SOLUTION: Preparation of an amorphous hydrofluoroolefin telomer is characterized by performing a free radical polymerization step at a temperature within a range from 225 to 400°C under pressure of 40 to 700 MPa in the presence of a non-monomer chain transfer agent selected from the group consisting of straight-chain, branched or cyclic 1-6C hydrocarbons, dialkyl ether, tetrahydrofuran, FSO₂Cl, ClSO₂Cl, aromatics, and siloxane.;COPYRIGHT: (C)2008,JPO&INPIT