Inherently light-and heat-stabilized polyamides with improved wet fasteness

本发明涉及一种制备聚酰胺的方法，其特征在于将原料单体或原料低聚物在至少1种通式(I)化合物的存在下进行聚合，其中R是官能团R#+[8]，其上带有1～4个相同或不同的成酰胺基团R#+[7]，R#+[1]是氢、C#-[1]～C#-[20]-烷基、环烷基、苄基或OR#+[6]，其中R#+[6]是氢、C#-[1]～C#-[20]-烷基、环烷基、苄基，R#+[2]、R#+[3]、R#+[4]和R#+[5]彼此独立地是C#-[1]～C#-[10]-烷基，n是大于1的自然数，以及连接R的该哌啶衍生物就其取代基即R#+[1]、R#+[2]、R#+[3]、R#+[4]和R#+[5]而言为相同或不同。该聚酰胺可用于制备长丝、纤维、薄膜、片状结构及模塑件。∴ A process for preparing polyamides comprises polymerizing starting monomers or starting oligomers in the presence of at least one compound of the formula (I)whereR is a functional group R which bears 1-4 identical or different amide-forming groups R ,R is H, C1-C20-alkyl, cycloalkyl, benzyl or OR , where R is H, C1-C20-alkyl, cycloalkyl or benzyl,R , R , R and R are independently C1-C10-alkyl,n is a natural number greater than 1, andthe piperidine derivatives attached to R are identical or different with regard to the substituents, meaning R , R , R , R and R .The polyamides are useful for preparing filaments, fibers, films, sheetlike structures and moldings.