Polymerization of perfluoro-2,5-dimethyl-3,6-dioxanonanoic acid triethoxysilylpropylamide (Fluorosam-39) was studied. It was found out that the polymer's macromolecule contains two kinds of structure fragments, one of which takes part in the ramified parts of macromolecule formation, the other onein the line sections of macromolecule formation. The polymer has an amorphous structure and does not dissolve neither in organic, nor in organofluorine solvents. It was stated that at thermal destruction the weakest point is an amide bond from which starts the polymer's destruction, leading to the monohydro-derivative-2Hheptadecafluoro-5-methyl-3,6-dioxanonane and a coke residue formation.

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