Fluorine-containing elastomeric polyamides and copolyamides and process for their preparation

摘要: A new class of elastomeric polymers comprising in the macromolecular chain polyamide groups. The can be crosslinked to form elastomers possessing excellent mechanical properties, high elasticity and flexibility at low temperature, good thermal chemical stability. polyamides copolyamides are prepared by polycondensation polyoxaperfluoroalkandioic acids diamines, optionally presence multifunctional compounds. When compounds polycondensed, an amount units from said that is lower than 30% number with respect bifunctional inserted.