Title:
MULTILAYER STRUCTURE AND ITS USE
Document Type and Number:
Japanese Patent JP3537607
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a multilayer structure with layered resin composition composed of a polyketone as carbon monoxide-ethylene-based copolymer and ethylene-vinyl alcohol copolymer, excellent in barrier resistance to gasoline and impact resistance, thus suitable for e.g. fuel containers.
SOLUTION: This multilayer structure is a layered resin composition composed of (A) 1-99wt.% of a polyketone consisting of carbon monoxide-ethylene- based copolymer and (B) 99-1wt.% of an ethylene-vinyl alcohol copolymer. The component A is pref. an alternate copolymer with raised carbonyl group content in terms of impact resistance and barrier resistance to gasoline. For the component B, ethylene content is pref. 22-70mol% and the saponification degree of the vinyl ester component is pref. ≥85%. Furthermore, incorporation of 0.0002-0.2mol% of a vinylsilane compound (pref. vinyl trimethoxysilane) as a comonomer ingredient in the component B is preferable in terms of improving the melt viscosity consistency with the base resin in conducting a coextrusion.
Inventors:
Hata, Nobuhiro
Shimo, Hiroyuki
Shimo, Hiroyuki
Application Number:
JP25263796A
Publication Date:
June 14, 2004
Filing Date:
September 25, 1996
Export Citation:
Assignee:
KURARAY CO LTD
International Classes:
B32B27/28; C08L29/04; C08L73/00; (IPC1-7): C08L73/00; B32B27/28; C08L29/04
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