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Resin composition and multilayer structure using same

A technology of resin composition and multilayer structure, applied in the direction of synthetic resin layered products, applications, household packaging, etc., can solve the problem of impaired gas barrier performance and achieve the effect of avoiding performance degradation

Active Publication Date: 2021-11-12
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, it is known that the gas barrier performance of the package of the multilayer film having EVOH resin used for the gas barrier layer is impaired by hot water treatment such as retort treatment in which the package is exposed to hot water for a long time

Method used

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  • Resin composition and multilayer structure using same
  • Resin composition and multilayer structure using same
  • Resin composition and multilayer structure using same

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0172]

[0173] For mixing the hydrate-forming alkaline earth metal salt (B) with the base resin (A), a melt-kneading operation or a mechanical mixing operation (granular dry blend) is generally used, and a melt-kneading operation is preferably used. Specific examples include a method of dry-blending the components and then melt-blending them, or a method of mixing the hydrate-forming alkaline earth metal salt (B) with the molten base resin (A).

[0174] The resin composition of the present invention can be directly applied to molding processing to produce molded articles. Alternatively, after preparing a high-concentration composition (masterbatch) of a partially dehydrated or completely dehydrated alkaline earth metal salt hydrate, the masterbatch is diluted with a base resin at the time of molding, and the resulting resin composition can be used to produce molded articles. The content ratio (A / B) of the base resin (A) to the hydrate-forming alkaline earth metal salt (B) i...

Embodiment

[0240] The present invention will be specifically illustrated by the following examples, but these examples do not limit the present invention as long as they do not exceed the gist of the present invention.

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Abstract

The present invention provides a resin composition that suppresses deterioration of properties due to absorption of moisture in a multilayer structure including a resin layer (hygroscopic resin layer) whose performance is degraded due to moisture absorption, and a multilayer structure including the resin composition body. The resin composition contains a hydrate-forming alkaline earth metal salt having a specific water absorption property, and the layer containing the resin composition can impart moisture resistance to the multilayer structure as a whole without affecting its appearance.

Description

technical field [0001] The present invention relates to a resin composition capable of improving moisture resistance and a multilayer structure using the resin composition. In particular, the present invention relates to a resin composition capable of improving the moisture resistance of a multilayer structure including a resin layer having poor moisture resistance, and a multilayer structure including a resin composition layer. Background technique [0002] As a film for packaging food and the like, a film made of a thermoplastic resin is generally used. From the viewpoint of maintaining the freshness of foods, films for packaging require physical strength and gas barrier properties such as oxygen barrier properties. In addition, the film for packaging needs moisture resistance in order to prevent the appearance of the package from deteriorating even when the package is stored at high temperature for a long time under high humidity conditions such as the rainy season. Fur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L101/02B32B27/18B32B27/32B32B27/34C08K3/32C08K3/34C08K5/098
CPCC08K5/098B32B27/18B32B27/32B32B27/34B32B33/00C08L23/12C08L77/02C08L51/06C08K3/32C08K3/34C08L101/02B32B27/306C08L23/26B29B9/06B29B9/12B32B7/12B32B27/08B32B2250/02B32B2250/03B32B2250/04B32B2250/05B32B2250/24B32B27/20B32B27/22B32B27/36B32B27/40B32B27/302B32B27/365B32B2270/00B32B2274/00B32B2307/7265B32B2307/308B32B2307/4026B32B2307/7145B32B2307/3065B32B2307/732B32B2439/60B32B2597/00B32B2439/80B32B2439/70
Inventor 可児昭一
Owner MITSUBISHI CHEM CORP