The present invention relates to branched polyamides comprising unsaturated ends comprising: at least one unit originating from a multifunctional monomer (A) having more than two functional groups, at least sequences resulting from the condensation, in the presence of at least one unsaturated monoacid, either of at least two different lactams, or of at least one lactam, at least one dicarboxylic acid and at least one diamine, or of a lactam or of an α,ω-aminocarboxylic acid, or of a diamine and of a diacid. The invention also relates to thermofusible adhesives comprising these branched polyamides comprising unsaturated ends, and to the use of these branched polyamides comprising unsaturated ends in sheathing electrical cables.
本发明涉及由不饱和端部组成的支化聚酰胺,包括至少一个单元来源于具有两个以上官能团的多功能单体 (A),在至少一种不饱和单酸存在下,由至少两种不同的内酰胺,或至少一种内酰胺、至少一种二
羧酸和至少一种二胺,或一种内酰胺或一种α,ω-
氨基
羧酸,或一种二胺和一种二酸缩合而成的至少序列。本发明还涉及由这些含有不饱和末端的支化聚酰胺组成的热熔粘合剂,以及这些含有不饱和末端的支化聚酰胺在电缆护套中的用途。