| abstract |
The invention relates to a process for the preparation of polyamides, characterized in that the polymerization of starting monomers or starting oligomers is carried out in the presence of at least one compound of the formula (I) DOLLAR F1, where DOLLAR AR is a functional group R · 8 · which 1- 4 identical or DOLLAR A different amide-forming groups R · 7 · carries, DOLLAR AR · 1 · H, C¶1¶-C¶20¶-alkyl, cycloalkyl, benzyl, OR · 6 · with DOLLAR AR · 6 · H, C ¶1¶-C¶20¶-alkyl, cycloalkyl, benzyl DOLLAR AR · 2 ·, R · 3 ·, R · 4 ·, R · 5 · independently of one another C¶1¶-C¶10¶-alkyl is a natural number is greater than 1 and DOLLAR A, the piperidine derivatives linked to R being different or identical with regard to the substituents, which are understood as R · 1 ·, R · 2 ·, R · 3 ·, R · 4 · and R · 5 · are. DOLLAR A The polyamides can be used for the production of threads, fibers, foils, fabrics and moldings. |