Synthesis of fluorine‐containing graft copolyamides by using condensation‐type macromonomers

Fluorine‐containing graft copolyamides were prepared from condensation‐type macromonomers. Dicarboxyl‐terminated poly(perfluoroalkylethyl acrylate) was prepared by radical chain transfer polymerization and copolycondensed with diamines and dicarboxylic acids in the presence of triphenylphosphine and pyridine. Nylon‐6 films containing various amounts of the resulting graft copolyamides were obtained by heat pressing. Only 5 wt % of graft copolymers were sufficient to make nylon‐6 surfaces water repellent.