Gas-barrier material with excellent blocking resistance and process for producing the same

A gas-barrier material and gas-barrier layer technology, applied in chemical instruments and methods, layered products, thin material processing, etc., can solve the problems of gas-barrier properties dependent on humidity, reduced gas-barrier properties, poor adhesion, etc., to achieve Reduced production time, high productivity, and the effect of imparting steam resistance

Inactive Publication Date: 2010-08-18
TOYO SEIKAN KAISHA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, from an environmental point of view, the use of polyvinylidene chloride and polyacrylonitrile has been limited, while ethylene / vinyl alcohol copolymers are accompanied by the problem that the gas barrier properties are greatly dependent on humidity, that is, gas barrier properties under high humidity conditions decreased sex
However, the above-mentioned films are very expensive and, moreover, come with problems of poor flexibility and poor adhesion to the substrate or any other resin layer

Method used

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  • Gas-barrier material with excellent blocking resistance and process for producing the same
  • Gas-barrier material with excellent blocking resistance and process for producing the same
  • Gas-barrier material with excellent blocking resistance and process for producing the same

Examples

Experimental program
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Effect test

Embodiment 1

[0168] A solution thereof was obtained by dissolving polyester polyol (Byron 200, manufactured by Toyo Boseki Co.) in a mixed solvent of ethyl acetate / MEK (65 / 35 by weight) at a concentration of 14% by weight. To this solution, polyisocyanate (Sumijule N3300, manufactured by Sumika-Bayer Urethane Co., an iso cyanurates) and di-n-butyltin dilaurate (manufactured by Wako Junyaku Co.), the mixture was diluted with the above-mentioned mixed solvent in such a manner that the total solid content became 14% by weight, thereby obtaining Coating solution.

[0169] By using a bar coater, the above-mentioned coating solution was applied to a biaxially stretched polyethylene terephthalate film 2 having a thickness of 12 μm in a box-type electric oven at a preset temperature of 70° C. Heat treatment was performed for 2 minutes under conditions to obtain a polyethylene terephthalate film having an anchor layer, that is, an isocyanate compound-containing layer 3 having a thickness of 0.3 μm...

Embodiment 2

[0177] A laminated member was obtained by the same method as in Example 1 except that the amount of polyisocyanate added to the anchor layer-forming coating liquid was changed to 30% by weight relative to the polyester polyol.

Embodiment 3

[0179] A laminated member was obtained by the same method as in Example 1, except that the conditions for heat-treating the anchor layer in an electric box oven were changed to a preset temperature of 120° C. and a treatment time of 2 minutes.

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Abstract

A gas-barrier material which has a gas-barrier layer comprising a polycarboxylic acid polymer. It is characterized in that the gas-barrier layer includes a surface layer which has isocyanate-group-derived chemical bonds formed therein, and that the surface layer has a nitrogen content of at least 1 at.% based on the sum of carbon, oxygen, and nitrogen in the surface layer. This gas-barrier material, which employs the polycarboxylic acid polymer which is a polymer having a high tendency to combine with hydrogen, has excellent blocking resistance regardless of the degree of crosslinking.

Description

technical field [0001] The present invention relates to a gas barrier material having excellent blocking resistance and a method for producing the same. More particularly, the present invention relates to a gas barrier material that prevents caking caused by water absorption of carboxyl groups in a gas barrier material including a polycarboxylic acid polymer, and a method for producing the same. Background technique [0002] Heretofore, a variety of gas barrier resins have been used, among which are known gas barrier resins such as polyvinylidene chloride, polyacrylonitrile, and ethylene / vinyl alcohol copolymer, and the like. However, from an environmental point of view, the use of polyvinylidene chloride and polyacrylonitrile has been limited, while ethylene / vinyl alcohol copolymers are accompanied by the problem that the gas barrier properties are greatly dependent on humidity, that is, gas barrier properties under high humidity conditions reduced sex. [0003] Films obt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/30B05D5/00B05D7/24C08J7/04C08J7/043C08J7/048
CPCB32B27/34C08J7/042B32B27/32B32B7/12B32B27/08B32B27/20B32B27/36B32B27/40B32B2262/0261B32B2262/062B32B2262/101B32B2262/106B32B2264/105B32B2264/108B32B2307/518B32B2307/7242B32B2307/746Y10T428/31855C08J7/048C08J7/043
Inventor 小赋雄介川合佳史子
Owner TOYO SEIKAN KAISHA LTD
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