Gas barrier film
AssigneeToray Industries, Inc.
InventorsHiroyuki Uebayashi, Takashi Arai, Kusato Hirota
Life of this patent
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Abstract
A gas barrier film is provided comprising a base film of polyester provided, on at least one of its surfaces, with a deposited layer of an inorganic compound and a gas barrier layer of a copolymer resin composition formed on the former. The gas barrier layer is produced from a mixture of a base material composed at least of the two components of (a) an unsaturated nitrile that accounts for 10% to 30% by mass of the copolymer and (b) an unsaturated compound with a hydroxyl group that accounts for 30% to 70% by mass of the copolymer; (c) a curing agent that contains a compound with an isocyanate group; and (d) a compound that has either two or more carboxylic acid groups or one or more carboxylic anhydride groups.
Claims11
A gas barrier film comprising a base film of polyester provided, on at least one of its surfaces, with a deposited layer of an inorganic compound and a gas barrier layer of a copolymer resin composition formed on the former,
- wherein said gas barrier layer is produced from a mixture of a base material composed of an unsaturated nitrile (a) that accounts for 10 to 30 parts by mass in 100 parts by mass of the copolymer and an unsaturated compound (b) with a hydroxyl group that accounts for 30 to 70 parts by mass in 100 parts by mass of the copolymer, the total of said unsaturated nitrile (a) and said unsaturated compound (b) accounting for 20 parts or more by mass in 100 parts by mass of the entire copolymer resin of said gas barrier layer;
- a curing agent (c) that contains a compound with an isocyanate group;
- and a compound (d1) that has either two or more carboxylic acid groups or one or more carboxylic anhydride groups.
Dependencies are inferred from the claim text.