Bifunctional and monofunctional and fluoropolyethers with brominated end groups and controlled molecular weight.

摘要

New mono- and bi-functional perfluoropolyethers comprising repeating units chosen from amongst (C2F4O), (CF2O) and …CHEM… statistically distributed along the chain, having a controlled molecular weight and brominated end groups, prepared starting from the product of the photochemical oxidation of C2F4, and/or C3F6, having different peroxide oxygen contents, and subsequent treatment in liquid phase with bromine, at temperatures ranging from -40 DEG to 130 DEG C in the presence of ultraviolet radiations.