A composition based on polyamide for flexible tubes for the transport of oil and gas

摘要

A composition comprising 70-96 wt.% of one or more polyamides selected from polyamide PA 11, PA 12, aliphatic polyamide produced by the condensation of a 6-12C aliphatic diamine and a 9-12C aliphatic diacid, copolyamide 11/12 comprising 90 wt.% of either PA11 or PA12 units, 4-10 wt.% plasticizer and 0-25 wt.% nitrile butadiene rubber (NBR) or H-NBR elastomer with the sum total of plasticizer and elastomer being 4-30 wt.%. An Independent claim is included for a pipe comprising a layer of the composition.