Patent ID: 7192646

Claim:
A hose comprising: a thermoplastic fluoropolymer barrier layer comprising a thermoplastic quadpolymer derived from (i) tetrafluoroethylene, (ii) vinylidene fluoride, (iii) at least one ethylenically unsaturated monomer of the formula CF 2 ═CFR f where R f is a perfluoroalkyl or a perfluoroalkoxy of 1 to 8 carbon atoms, and (iv) a perfluorovinyl ether of the formula CF 2 ═CF—(OCF 2 CF(R f )) a OR′ f , where R f is as described in (iii), R′ f is a perfluoroaliphatic, a perfluoroalkyl or a perfluoroalkoxy, of 1 to 8 carbon atoms, and a has a value of 0 to 3; and a rubber layer adjacent to said barrier layer, said rubber layer comprising 100 parts by weight of an elastomer comprising FKM which is a tetrafluoroethylene/hexafluoropropylene/vinylidene fluoride terpolymer composition; from about 5 to about 15 parts by weight, per 100 parts by weight of elastomer, of at least one acid acceptor selected from the group consisting of magnesium oxide, calcium hydroxide, litharge, dibasic lead phosphite, calcium oxide, and zinc oxide; from about 1 to about 6 parts by weight, per 100 parts by weight of elastomer, of at least one diamine curative; and from about 1 to about 10 parts by weight, per 100 parts by weight of elastomer, of at least one of a hydrotalcite or tricalcium aluminate hexahydrate; wherein the weight ratio of said at least one acid acceptor to said at least one of a hydrotalcite or tricalcium aluminate hexahydrate ranges from about 1:1 to about 5:1; and from about 0.5 to about 6 parts by weight, per 100 parts by weight of elastomer, of at least one fatty amine selected from the group consisting of cocoalkylamines, 1-dodecylamine, 1-hexadecylamine, 1-octadecylamine, oleylamine, soyaalkylamines, tallowalkylamines, hydrogenated tallowalkylamines, dicocoalkylamines, di-n-docecylamine, di-n-hexadecylamine, di-n-octadecylamine, di(tallowalkyl)amines, di(hydrogenated tallowalkyl)amines, cocoalkyldimethylamines, dimethyl-n-octylamine, dimethyl-n-decylamine, dimethyl-n-dodecylamine, dimethyl-n-tetradecylamine, dimethyl-n-hexadecylamine, dimethyl-n-octadecylamine, dimethyloleylamines, di-n-decylmethylamine, dicocoalkylmethylamines, dihydrogenated tallowalkylmethylamines, tri-n-octylamine, tri-n-dodecylamine, and tri-n-hexadecylamine.