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Thermoplastic polymer compositions having barrier properties, film or layer, layered structure, packaging material, containers and packaging cushions
Thermoplastic polymer compositions having barrier properties, film or layer, layered structure, packaging material, containers and packaging cushions
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机译:具有阻隔性能,薄膜或层,分层结构,包装材料,容器和包装垫的热塑性聚合物组合物
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摘要
The present invention provides a thermoplastic polymer composition which is obtained through dynamic vulcanization performed by mixing an ethylene-vinyl alcohol copolymer (I), a modified block copolymer (II) which comprises an aromatic vinyl polymer block and a conjugated diene polymer block and which has a functional group consisting of a carboxyl group and/or its derivative, and an amine crosslinking agent (III), wherein the ethylene-vinyl alcohol copolymer (I) has an ethylene content of from 10 to 60 mole% and has a melt flow rate of from 1 to 20 g/10 minutes, and the amount of the functional group consisting of a carboxyl group and/or its derivative which the modified block copolymer (II) has is from 2 to 20 groups per molecule. The thermoplastic polymer composition is excellent in both barrier properties to gases, organic liquids and the like and flexibility.
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