FLEXIBLE THERMOPLASTIC COMPOSITION WITH IMPROVED BEHAVIOR BEFORE OILS AND USE OF SUCH COMPOSITION.

摘要

Flexible thermoplastic composition with high thermomechanical content and resistant to aging in oil, comprising a graft copolymer with polyamide blocks constituted from a polyolefin trunk and at least one polyamide graft in which: - the grafts are attached to the trunk by the remains of an unsaturated monomer (X) having a function capable of reacting with a polyamide having an amine end or a carboxylic acid end, - the remains of the unsaturated monomer (X) are fixed on the trunk by grafting or copolymerization from its double junction, characterized in that it comprises: - from 40 to 90% by weight of the trunk in polyolefin comprising the unsaturated monomer (X), - from 5 to 40%, preferably from 15 to 30%, by weight of grafts in polyamide, and - from 5 to 40%, preferably from 10 to 30%, by weight of at least one polymer chosen from a saponified ethylene / vinyl acetate copolymer and a polyamide.