| abstract |
The invention relates to a copolymer of rigid polyamide PA blocks and flexible blocks, characterised in that it comprises at least one carboxylic acid chain end blocked by a polycarbodiimide, said copolymer according to the invention having a non-crosslinked linear form. The invention also relates to the use of a polycarbodiimide in a method for producing a copolymer of rigid polyamide PA blocks and flexible blocks comprising at least one carboxylic acid chain end, for improving the extrudability of the copolymer, the stretching capacity of the copolymer, the abrasion resistance, the tear resistance and the durability of the copolymer, without increasing the dispersity thereof. |