Patent ID: 6960377

Claim:
A flexible fuel hose having improved fuel vapor barrier properties, said fuel hose including a battier layer forming an inner tubular structure, said barrier layer comprising: a blend of about 5 to 95 weight percent of a first fluoropolymer having a fluorine content of about 68 to 74% said first fluoropolymer comprising a copolymer or terpolymer formed of two or more monomers selected from the group consisting of hexafluoropropylene, vinylidene, fluoride and tetrafluoroethylene, and about 95 to 5 weight percent of a second fluoropolymer having a fluorine content of about 73 to 78%, said second fluoropolymer comprising a terpolymer formed by the copolymerization of hexafluoropropylene, vinylidene fluoride and tetrafluoroethylene, wherein said first fluoropolymer exhibits elastomeric characteristics and said second fluoropolymer exhibits thermoplastic characteristics; and a synthetic elastomer material forming a second tubular structure around said barrier.