Multilayer structure, resin composition for adhesive resin layer, and multilayer structure production method
AssigneeThe Nippon Synthetic Chemical Industry Co., Ltd.
InventorRyohei KOMURO
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Abstract
A multilayer structure includes an adhesive resin layer provided between a thermoplastic resin layer and a gas barrier resin layer, wherein the adhesive resin layer is formed from a resin composition containing a polyolefin resin (A) containing at least one of a carboxyl group and an acid anhydride group, and a fatty acid zinc salt (B), wherein the fatty acid zinc salt (B) is present in the resin composition in a proportion of 40 to 250 ppm on a metal basis based on the amount of the adhesive resin layer.
Claims9
A multilayer structure comprising:
- a thermoplastic resin layer;
- a gas barrier resin layer;
- and
- an adhesive resin layer provided between the thermoplastic resin layer and the gas barrier resin layer;
- wherein the adhesive resin layer comprises a resin composition comprising:
- (A) a polyolefin resin containing at least one of a carboxyl group and an acid anhydride group;
- and
- (B) a fatty acid zinc salt;
- and
- wherein the fatty acid zinc salt (B) is present in the resin composition in a proportion of 40 to 250 ppm on a metal basis based on an amount of the adhesive resin layer.
A resin composition for an adhesive resin layer, the resin composition comprising:
- (A) a polyolefin resin containing at least one of a carboxyl group and an acid anhydride group;
- and
- (B) a fatty acid zinc salt;
- wherein the fatty acid zinc salt (B) is present in a proportion of 40 to 250 ppm on a metal basis based on an amount of the resin composition.
A method of producing a multilayer structure including a thermoplastic resin layer, a gas barrier resin layer, and an adhesive resin layer provided between the thermoplastic resin layer and the gas barrier resin layer, the method comprising:
- preparing a thermoplastic resin for the thermoplastic resin layer;
- preparing a gas barrier resin for the gas barrier resin layer;
- preparing a resin composition for the adhesive resin layer, the resin composition comprising a polyolefin resin (A) containing at least one of a carboxyl group and an acid anhydride group, and 40 to 250 ppm of a fatty acid zinc salt (B) on a metal basis based on an amount of the resin composition;
- and
- forming the thermoplastic resin layer, the adhesive resin layer, and the gas barrier resin layer from the thermoplastic resin, the resin composition, and the gas barrier resin, respectively, by a coextrusion method or a coinjection molding method.
Dependencies are inferred from the claim text.