Gas barrier film having excellent flexibility
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsTakaaki Kutsuna, Shuta Kihara
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AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsTakaaki Kutsuna, Shuta Kihara
Estimating the term…
Provided is a gas barrier film in which in coating or laminating a single layer film or a multiplayer film comprising at least one (a) thermoplastic resin layer on which an inorganic compound is vapor deposited or (b) layer comprising metal foil, wherein 40% by weight or more of a skeletal structure represented by the following Formula (1) is contained in an epoxy resin-cured product formed from an epoxy resin composition comprising an epoxy resin and an epoxy resin curing agent as principal components. The above gas barrier film has a toughness and a high gas barrier property brought about by the above epoxy resin composition used for adhering or coating on various film materials in addition to a suitable adhesive performance to various film materials, so that it is a gas barrier film which does not cause a marked reduction in a gas barrier property brought about by treatment such as bending in mold-processing of the film and which is excellent in a flexibility. 1
A gas barrier film prepared by coating an epoxy resin composition comprising an epoxy resin and an epoxy resin curing agent as principal components on a single layer film or a multilayer film comprising at least one (a) thermoplastic resin layer on which at least one inorganic compound selected from metal, glass and inorganic oxide is vapor deposited or (b) layer comprising a metal foil, wherein 40% by weight, or more of a skeletal structure represented by Formula (1) is contained in an epoxy resin-cured product formed from the above epoxy resin composition:
A gas barrier film which is a laminated film comprising at least one (a) thermoplastic resin layer on which at least one inorganic compound selected from metal, glass and inorganic oxide is vapor deposited or (b) layer comprising a metal foil, wherein in laminating the respective layers constituting the above laminated film, at least one space between the layers is adhered with an epoxy resin composition comprising an epoxy resin and an epoxy resin curing agent as principal components, and 40% by weight or more of a skeletal structure represented by Formula (1) is contained in an epoxy resin-cured product formed from the above epoxy resin composition:
Dependencies are inferred from the claim text.
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Amines: amino carboxylic acids
With two or more layers, where at least one layer of a composition contains a polymer binder: with at least one layer of inorganic material and at…
Coating: improving the adhesiveness of the coatings per se, e.g. forming primers
Coating: forming gas barrier coatings
Term end not estimated
1. Field of the Invention
The present invention relates to a gas barrier film (including a metal foil film) used for packaging materials used for foods, medicines, photosensitive materials and tobaccos for the purpose of preserving the contents by shielding various gases.
2. Description of the Related Art
The present invention shall be explained below with reference to examples, but the present invention shall by no means be restricted by these examples.
First, epoxy resin curing agents used in the following examples shall be described.
(Epoxy Resin Curing Agent A:)