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AssigneesToyo Boseki Kabushiki Kaisha, Toyoda Gosei Co., Ltd.
InventorsTsutomu Tamura, Tomohide Nakagawa, Shoji Kouketsu, Gaku Maruyama, Daisuke Tsutsumi, Junji Koizumi, Katsushi Ito, Haruyasu Mizutani
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A material for fuel-system parts which is excellent in impact strength, rigidity, elongation, unsusceptibility to swelling with liquid fuels including gasoline, and gasoline-barrier properties and has satisfactory moldability. The material for fuel-system parts comprises a resin composition comprising 100 parts by weight of a given polyamide resin (A) and 11 to 100 parts by weight of a resin (B) having a lower glass transition temperature than the polyamide resin (A) and having a functional group reactive with the polyamide resin (A), and has a structure in which the polyamide resin (A) serves as a matrix ingredient and the resin (B) serves as a domain ingredient.
A material for a fuel system part, which comprises a resin composition comprising a polyamide resin (A) comprising, as an essential component, meta-xylylenediamine as a diamine component, wherein the polyamide resin (A) is selected from the group consisting of a polyamide resin comprising meta-xylylenediamine, cyclohexanedicarboxylic acid and adipic acid, a polyamide resin comprising meta-xylylenediamine, terephthalic acid and adipic acid, a copolymer thereof and a blend thereof, and a polyolefin resin (B) having a glass transition temperature lower than that of said polyamide resin (A) and a functional group capable of reacting with said polyamide resin (A), at a ratio of 25 -75 parts by weight relative to 100 parts by weight of said polyamide resin (A), wherein said polyamide resin (A) is a matrix component and said resin (B) is a domain component.
Dependencies are inferred from the claim text.