Extrusion Compositions Comprising Recycled Polyamides Recovered Upon Exploitation Of Off Shore Or On Shore Oil Or Gas Deposits

Abstract: The present invention relates to an extrusion composition comprising, by weight: a) 35 to 100%, in particular 35 to 96.9%, of at least one semi-crystalline aliphatic polyamide PA1 comprising at least 30%, in particular at least 50%, of recycled semi-crystalline aliphatic polyamide PA2 recovered from used or end-of-life pipes for exploiting off-shore or on-shore oil or gas deposits, in particular off-shore oil or gas deposits, said recycled semi-crystalline aliphatic polyamide PA2 having undergone a washing and/or compounding step upon removing and grinding the pipe to form granules; b) 0 to 65%, in particular 0 to 10%, of at least one reinforcing fiber; c) 0 to 40%, in particular 3 to 30%, of at least one impact modifier; d) 0 to 30%, in particular 0 to 15%, of a filler, e) 0 to 10%, in particular 0.1 to 5%, of at least one additive, the sum of components a + b + c + d + e being equal to 100%, the inherent viscosity of said composition, determined according to ISO 307: 2007 in m-cresol at 20°C, being greater than or equal to 1.2 dl/g, in particular between 1.2 dl/g and 1.7 dl/g.

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