| abstract |
The invention relates to a copolyamide comprising at least two distinct units corresponding to the following general formula: A/X.T in which: A is selected from a unit obtained from an amino acid, a unit obtained from a lactam and a unit corresponding to the formula (Ca diamine). (Cb diacid), with a being the number of carbon atoms of the diamine and b being the number of carbon atoms of the diacid, a and b each being between 4 and 36, advantageously between 9 and 18; X.T denotes a unit obtained from the polycondensation of a Cx diamine and of terephthalic acid, with x being the number of carbon atoms of the Cx diamine, x being between 9 and 36, advantageously between 10 and 18, characterized in that said copolyamide has: - an amino chain end content of greater than or equal to 20 [mu]eq/g, - an acid chain end content of less than or equal to 100 [mu]eq/g, and - a nonreactive chain end content of greater than or equal to 20 [mu]eq/g, and also to the method for preparing said copolyamide, to a composition comprising this polyamide and also to the use of this polyamide and of such a composition. |