MULTILAYER TUBE BASED ON A POLYAMIDE AND A FLUOROPOLYMER FOR TRANSFERRING FLUIDS

  • US 20090188578A1
  • Filed: 10/18/2005
  • Published: 07/30/2009
  • Est. Priority Date: 10/19/2004
  • Status: Abandoned Application
First Claim
Patent Images

1. Multilayer tube comprising, in its radial direction from the outside inwards:

  • a polyamide outer layer (1);

    an inner layer (2) of a composition comprising, the total being 100%, 5 to 30% by weight of a blend (A) comprising;

    a polyethylene carrying epoxy functional groups,an impact modifier chosen from elastomers and very low-density polyethylenes, the said impact modifier being completely or partly functionalized;

    95 to 70% by weight of a blend (B) comprising;

    a fluoropolymer (B1),a functionalized fluoropolymer (B2),the proportion of (B2) being between 1 and 80% by weight of (A)+(B),the layers being successive and adhering to one another in their respective contact region.

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