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Gas barrier resin composition and gas barrier film

A technology of resin composition and gas barrier, applied in the direction of synthetic resin layered products, thin material processing, adhesive type, etc., can solve the problems of reduced post-processing, damage to appearance, low productivity, etc., and achieve excellent gas barrier properties Effect

Inactive Publication Date: 2007-09-19
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In these methods, in order to fully carry out esterification to improve the gas barrier properties of the film, it is necessary to heat it at a high temperature for a long time to carry out the reaction. Not only the productivity is low, but also the base film is thermally shrunk, resulting in reduced post-processing, Problems such as damage to the appearance due to coloring

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0053] As the preparation method of the coating solution, for example, the method of directly adding the organic compound (B) to the solution or emulsion of the polymer (A) and then stirring it, or dissolving or dispersing it in water or various organic solvents in advance A method in which the organic compound (B) in the polymer (A) is added to the solution or emulsion of the polymer (A) and then stirred.

[0054] In the gas barrier resin composition of the present invention, heat stabilizers, antioxidants, reinforcing agents, pigments, antiaging agents, weather resistance agents, flame retardants, and plasticizers may be added as long as the properties are not impaired. , release agent, lubricant, etc.

[0055] Examples of the heat stabilizers, antioxidants and antiaging agents include hindered phenols, phosphorus compounds, hindered amines, sulfur compounds, copper compounds, halides of alkali metals, or mixtures thereof.

[0056] In addition, examples of reinforcing agent...

Embodiment 1

[0071] Mix 439.1 parts of 1,4-bis(isocyanatomethyl)cyclohexane, 35.4 parts of dimethylolpropionic acid, 61.5 parts of ethylene glycol, and 140 parts of acetonitrile as a solvent, and make The reaction time is 3 hours. Then, this carboxylic acid group-containing polyurethane prepolymer solution was neutralized at 50° C. using 24.0 parts of triethylamine. 267.9 parts of this polyurethane prepolymer solution was dispersed in 750 parts of water using a high-speed disperser, and 35.7 parts of 2-[(2-aminoethyl)amino]ethanol was added to carry out chain extension reaction. Aqueous dispersion 1 of a polyurethane resin having a solid content of 25% by weight was obtained by distilling off acetonitrile. 0.5 part of urea was added to the aqueous dispersion 1 (10 parts) of this polyurethane resin, and it stirred for 30 minutes, and the coating liquid was obtained. This coating liquid was applied to the treated surface side of a biaxially stretched polyethylene terephthalate film having ...

Embodiment 2

[0073] 429.1 parts of 1,3-xylylene diisocyanate, 35.4 parts of dimethylolpropionic acid, 61.5 parts of ethylene glycol, and 140 parts of acetonitrile as a solvent were mixed and reacted at 70° C. for 3 hours under a nitrogen atmosphere. Then, this carboxylic acid group-containing polyurethane prepolymer solution was neutralized at 50° C. using 24.0 parts of triethylamine. 267.9 parts of this polyurethane prepolymer solution was dispersed in 750 parts of water using a high-speed disperser, and chain extension reaction was performed using 35.7 parts of 2-[(2-aminoethyl)amino]ethanol. Acetonitrile was distilled off to obtain a polyurethane resin aqueous dispersion 2 having a solid content of 25% by weight. 0.5 part of urea was added to the aqueous dispersion 2 (10 parts) of this polyurethane resin, and it stirred for 30 minutes, and obtained the coating liquid. This coating solution was applied to the treated side of a biaxially stretched polyethylene terephthalate film with a t...

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Abstract

Disclosed is a gas barrier resin composition which contains a polymer (A) having a repeating constitutional unit including an active hydrogen-containing functional group and / or a heteroatom-containing polar functional group, and an organic compound (B) containing an active hydrogen-containing functional group and / or a heteroatom-containing polar functional group in a molecule. Also disclosed is a gas barrier film containing such a gas barrier resin composition. The gas barrier resin composition and the gas barrier film have excellent gas barrier properties without containing a halogen.

Description

technical field [0001] The present invention relates to a gas-barrier resin composition excellent in applicability to a substrate film, which is suitable as a film, sheet, or molding material excellent in barrier properties to oxygen and water vapor, and a gas-barrier film using the composition . Background technique [0002] Gas barrier films and packaging materials using the gas barrier films are well known. Aluminum foil is the material with the most excellent oxygen barrier properties, but because of its weak pinhole resistance, it cannot be used alone except for special applications, and is basically used as an intermediate layer of laminated films. Such a laminated film has very excellent gas barrier properties, but has disadvantages such as being opaque, making it impossible to see the contents, and making it difficult to judge whether or not it has been reliably heat-sealed. [0003] In addition, thermoplastic films such as polyester films and polyamide films are u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K5/21B32B9/00B32B27/40C08L63/00C08L101/02
CPCC08G18/7642B32B2255/205B32B27/08C09D175/12C08G18/0823C09J175/12B32B2255/10B32B27/18C08G18/757B32B2307/7242C08G18/3206B32B2307/412B32B2439/70B32B27/40C08G18/0866C08G18/12Y10T428/31605Y10T428/31609C08G18/3271C08L101/02C08L63/00C08K5/21C08L75/04
Inventor 荒井崇立石康广田草人
Owner TORAY IND INC
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