Resin composition having excellent recoverability and multilayer structure using same

A resin composition and multi-layer structure technology, applied in recycling technology, synthetic resin layered products, packaging recycling, etc., can solve the problems of adhesion of deteriorated products, insufficient impact resistance, difficult continuous melt forming, etc. Good melt formability and excellent impact resistance
CN114746500APending Publication Date: 2022-07-12KURARAY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KURARAY CO LTD
Publication Date
2022-07-12

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Abstract

A resin composition containing 0.1-20 parts by mass of an ethylene-vinyl alcohol copolymer (B), 0.1-20 parts by mass of an acid-modified polyolefin (C), and 0.1-10 parts by mass of an acid-modified polyolefin (D) per 100 parts by mass of a polyolefin (A), the ethylene unit content of (B) being 15-60 mol%, the degree of saponification being 85 mol% or more, the density of (A) being 0.89 g / cm3 or more and less than 0.97 g / cm3, the density of (C) being 0.89 g / cm3 or more and less than 0.97 g / cm3, and the density of (D) being 0.85 g / cm3 or more and less than 0.89 g / cm3 or more and less than 0.89 g / cm3 or more, and the glass transition temperature measured by dynamic viscoelasticity measurement is-30 DEG C or less. The resin composition has good melt moldability, and the amount of deteriorated substances adhering to a screw or a die head is small even when melt molding is continuously performed for a long time. In addition, by using this resin composition, a molded article having excellent impact resistance at low temperatures can be obtained.
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Description

technical field

[0001] The present invention relates to a resin composition containing a polyolefin and an ethylene-vinyl alcohol copolymer, a method for producing the same, and a multilayer structure, a molded article, and a fuel container using the resin composition. Moreover, it relates to the recovery aid used for manufacture of the multilayer structure using the said resin composition, etc.. Background technique

[0002] At present, for a multilayer structure comprising a polyolefin (hereinafter abbreviated as "PO") layer and an ethylene-vinyl alcohol copolymer (hereinafter sometimes abbreviated as "EVOH") layer having excellent barrier properties, it has been effectively utilized. Barrier properties are used for various applications such as food packaging containers and fuel containers. Such multilayer structures are used as various molded articles such as films, sheets, cups, trays, and bottles. In this case, edges, defective products, etc., which are generated when...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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