自動車用水系多層チューブ

Japanese Patent JP7390931

B2

To provide an aqueous multilayer tube for automobiles which is improved in impact resistance, flexural strength, pressure resistance, etc.SOLUTION: The present invention relates to an aqueous multilayer tube for automobiles comprising: a tubular inner layer 1 consisting of following (A); an intermediate layer 2 provided in contact with an outer peripheral surface of the inner layer 1 and consisting of following (B); and an outer layer 3 provided in contact with an outer peripheral surface of the intermediate layer 2 and consisting of following (C), wherein an inter-layer connection is performed between the layers, (A) is a resin composition containing as a main component an alloy dispersing an island phase of a polyethylene component or an ethylene-based rubber component in a sea phase of a polypropylene component, (B) is a resin composition containing 5-40 pts.wt. of granular inorganic fillers with respect to 100 pts.wt. of a polypropylene-based resin, and (C) is a resin composition containing as a main component an alloy dispersing an island phase of a polyethylene component or an ethylene-based rubber component in a sea phase of a polypropylene component.SELECTED DRAWING: Figure 1

Koji Mizutani
Akira Hirai
Yoji Takimoto
Keiji Imanishi
Kazuhiro Saiki

JP2020033226A

December 04, 2023

February 28, 2020

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Sumitomo Riko Co., Ltd.

F16L11/08; B32B1/08; B32B27/32

JP2009137272A
JP11315967A
JP2001031809A
JP2008055640A

US20150330538

Yukihiko Saitou
井▲崎▼ 愛佳
Yuko Nishito

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