Gas-barrier polyurethane resin, and adhesive for laminate, gas-barrier film and paint containing the same
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsTakeshi Nomura, Takeshi Koyama
Life of this patent
Estimating the term…
Abstract
The polyurethane resin produced by reacting a component composed mainly of an active hydrogen-containing compound with a component composed mainly of an organic polyisocyanate compound which contains a backbone structure represented by the formula: in an amount of 25% by weight or higher, exhibits a high gas-barrier property and a high adhesion property. Accordingly, the present invention provides: (A) a two-part liquid curable polyurethane resin composition having an excellent adhesion property; (B) a heat-curing gas-barrier polyurethane resin useful as a packaging material; and (C) a paint having excellent rust-proofing property, corrosion resistance and aesthetic decorating property.
Claims22
A polyurethane resin produced by reacting a component comprising mainly (A) an alkyleneoxide adduct of xylylenediamine and a component comprising mainly (B) an organic polyisocyanate compound, said polyurethane resin containing a backbone structure represented by the formula (1):
- in an amount of 25% by weight or higher,
- wherein said organic polyisocyanate compound (B) is a reaction product obtained by reacting (a) xylylenediisocyanate and (b) at least one polyfunctional alcohol selected from the group consisting of C2 to C10 polyfunctional alcohols, or a reaction product obtained by reacting (a) xylylenediisocyanate, (b) the at least one polyfunctional alcohol and (c) at least one compound selected from the group consisting of aromatic polyfunctional amines, aroaliphatic polyfunctional amines, alicyclic polyfunctional amines, aliphatic polyfunctional amines, aliphatic alkanol amines, aromatic polyfunctional carboxylic acids, alicyclic polyfunctional carboxylic acids and aliphatic polyfunctional carboxylic acids, and has two or more NCO end groups.
A two-part liquid curable polyurethane resin composition comprising:
- a component comprising mainly (A) an alkyleneoxide adduct of xylylenediamine;
- and
- a component comprising mainly (B) an organic polyisocyanate compound,
- said components (A) and (B) being reacted with each other to form a cured product containing a backbone structure represented by the formula (1):
- in an amount of 25% by weight or higher,
- wherein said organic polyisocyanate compound (B) is a reaction product obtained by reacting (a) xylylenediisocyanate and (b) at least one polyfunctional alcohol selected from the group consisting of C2 to C10 polyfunctional alcohols, or a reaction product obtained by reacting (a) xylylenediisocyanate, (b) the at least one polyfunctional alcohol and (c) at least one compound selected from the group consisting of aromatic polyfunctional amines, aroaliphatic polyfunctional amines, alicyclic polyfunctional amines, aliphatic polyfunctional amines, aliphatic alkanol amines, aromatic polyfunctional carboxylic acids, alicyclic polyfunctional carboxylic acids and aliphatic polyfunctional carboxylic acids, and has two or more NCO end groups.
A heat-curing gas-barrier polyurethane resin comprising:
- a cured resin produced by reacting (A) an alkyleneoxide adduct of xylylenediamine with (B) at least one compound selected from the group consisting of xylylenediisocyanate and derivatives thereof, said cured resin containing a backbone structure represented by the formula (1):
- in an amount of 25% by weight or higher, and the components (A) and (B) containing tri- or more functional compounds in an amount of 7% by weight or higher based on a total weight of the components (A) and (B).
A gas-barrier paint comprising as a film-forming component, a gas-barrier paint composition containing (A) an alkyleneoxide adduct of xylylenediamine and (B) an organic polyisocyanate compound as main components, said composition being cured into a coating film containing a backbone structure represented by the formula (1):
- in an amount of 25% by weight or higher, wherein said organic polyisocyanate compound (B) is a reaction product of (a) xylylenediamine and (b) at least one polyfunctional alcohol selected from the group consisting of C2 to C10 polyfunctional alcohols, or a reaction product of the compounds (a) and (b) with (c) at least one compound selected from the group consisting of aromatic polyfunctional amines, aroaliphatic polyfunctional amines, alicyclic polyfunctional amines, aliphatic polyfunctional amines, aliphatic alkanol amines, aromatic polyfunctional carboxylic acids, alicyclic polyfunctional carboxylic acids and aliphatic polyfunctional carboxylic acids, and has two or more NCO end groups.
A gas-barrier coating film formed by curing a gas-barrier paint composition containing (A) an alkyleneoxide adduct of xylylenediamine and (B) an organic polyisocyanate compound as main components, said coating film containing a backbone structure represented by the formula (1):
- in an amount of 25% by weight or higher, wherein said organic polyisocyanate compound (B) is a reaction product of (a) xylylenediamine and (b) at least one polyfunctional alcohol selected from the group consisting of C2 to C10 polyfunctional alcohols, or a reaction product of the compounds (a) and (b) with (c) at least one compound selected from the group consisting of aromatic polyfunctional amines, aroaliphatic polyfunctional amines, alicyclic polyfunctional amines, aliphatic polyfunctional amines, aliphatic alkanol amines, aromatic polyfunctional carboxylic acids, alicyclic polyfunctional carboxylic acids and aliphatic polyfunctional carboxylic acids, and has two or more NCO end groups.
Dependencies are inferred from the claim text.