TPE-A

Polyether copolyamides (TPE-A) are prepared by reacting a polyamide bearing carboxylic acid end groups and a polyether diol in the presence of a catalyst according to the same scheme than TPE-E. Various types of Nylon can be used. The ratio of Nylon to polyether determines the hardness of the TPE-A formed; the type of Nylon determines the thermal behavior (melting point) of the TPE-A.

TPE-A are among the most expensive but also the most performing TPE. They are used in demanding applications where no other TPE can be used or when dynamic properties are required. One property of interest is the almost constant value of the modulus over a wide range of temperatures.

TPE-A are mainly used in sky booths and high end sport shoes applications. Other applications include conveyor belts, silent gears or breathable films.