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发明授权
CN105793169B 多层容器 有权

多层容器
摘要：
本发明提供一种多层容器，其具有由内层向外层依次层叠有如下三层的3层以上层结构：包含透氧性树脂作为主要成分的透氧层(A)；包含吸氧性树脂组合物(b1)和粘接性树脂(b2)作为主要成分的吸氧性粘接层(B)，所述吸氧性树脂组合物(b1)包含脱氧剂组合物(b1‑i)和热塑性树脂(b1‑ii)；以及包含阻气树脂作为主要成分的阻气层(C)，其中，前述阻气树脂为由二胺单元和二羧酸单元形成的聚酰胺树脂(X)，所述二胺单元包含70摩尔％以上的间苯二甲胺单元，所述二羧酸单元包含75～96摩尔％的碳数4～20的α,ω‑直链脂肪族二羧酸单元及25～4摩尔％的芳香族二羧酸单元，前述吸氧性粘接层(B)中的脱氧剂组合物(b1‑i)的含量相对于构成吸氧性粘接层(B)的材料100质量％为5～50质量％，且粘接性树脂(b2)的含量相对于构成吸氧性粘接层(B)的材料100质量％为20～70质量％，前述吸氧性粘接层(B)的厚度为前述多层容器的总厚度的10～30％。
摘要（英）：

A multilayer container having a layer configuration of 3 or more layers including, as layered in that order from an inner layer to an outer layer, an oxygen-permeable layer (A) containing an oxygen-permeable resin as the main component thereof, an oxygen-absorbing adhesive layer (B) containing, as the main components thereof, an oxygen-absorbing resin composition (b1) containing a deoxidant composition (b1-i) and a thermoplastic resin (b1-ii) and an adhesive resin (b2), and a gas-barrier layer (C) containing a gas-barrier resin as the main component thereof, wherein the gas-barrier resin is a polyamide resin (X) including a diamine unit containing a metaxylylenediamine unit in an amount of 70 mol% or more and a dicarboxylic acid unit containing 75 to 96 mol% of an ±,É-linear aliphatic dicarboxylic acid unit having 4 to 20 carbon atoms and 25 to 4 mol% of an aromatic dicarboxylic acid unit, the content of the deoxidant composition (bl-i) in the oxygen-absorbing adhesive layer (B) is 5 to 50% by mass relative to 100% by mass of the material constituting the oxygen-absorbing adhesive layer (B), the content of the adhesive resin (b2) is 20 to 70% by mass relative to 100% by mass of the material constituting the oxygen-absorbing adhesive layer (B), and the thickness of the oxygen-absorbing adhesive layer (B) is 10 to 30% of the total thickness of the multilayer container.

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