Process for the production of PA-410 and PA-410 obtainable by this process

摘要

A process for producing a polymer containing monomeric units of butane-1,4-diamine and 1,10-decanedioic acid (PA-410) comprising the steps of: 1) preparing a solution of a salt of butane-1 , 4-diamine and 1,10-decanedioic acid in water, 2) concentrating the salt solution at a temperature of between 100 and 180 ° C and a pressure of between 0.8 and 6.0 bar up to a water content of between 2 and 8 wt.%, 3) produced from the salt a prepolymer containing monomeric units of butane-1,4-diamine and 1,10-decanedioic acid at a temperature of between 185 and 205 ° C, and 4) poscondensar the prepolymer.