Abstract: A vacuum heat insulating material including a core material and a sheath for covering the core material, the interior thereof being sealed to maintain a reduced pressure therein, wherein the sheath includes a gas-barrier laminate that has at least a heat-melt-adhesion layer, a vapor-deposited layer and a gas-barrier material, and the gas-barrier material has a gas-barrier layer that includes a polycarboxylic acid type polymer and contains a monovalent metal element in an amount of not more than 1.4% by weight, a polyvalent metal element in an amount of at least not less than 5.0% by weight, and a nitrogen element in an amount of 0.01 to 3.0% by weight per the total weight of nitrogen and carbon. The vacuum heat insulating material has excellent heat insulating capability and gas-barrier property, and sustains excellent heat insulating capability over extended periods of time as well as excellent flexibility and waterproof property.

Abstract: A gas barrier material comprising a polycarboxylic acid polymer, and containing 0.10 to 1.4% by weight of a monovalent metal element, at least not less than 5.0% by weight of a polyvalent metal element, and 0.01 to 3.0% by weight of a nitrogen element per the total weight of nitrogen and carbon. The gas barrier material exhibits excellent gas barrier property, excellent waterproof property after the bend working and excellent appearance on the surface of the coating.

Abstract: To provide a coating composition for undercoating which, in forming a gas-barrier layer having a crosslinked structure between a polycarboxylic acid type polymer and polyvalent metal ions by the heating at a low temperature for a short period of time, permits polyvalent metal ions to be easily and quickly fed into the polycarboxylic acid type polymer and, besides, into the whole gas-barrier layer. A coating composition containing, as chief components, a nonaqueous polyester polyol, an isocyanate compound, and an alkaline compound of a polyvalent metal that serves as an ion source for forming the crosslinked structure, wherein the nonaqueous polyester polyol contains a nonaqueous polyester polyol which contains a metal element in the resin skeleton thereof as an essential component, and the alkaline compound of the polyvalent metal has an average primary particle size in a range of 0.005 to 0.5 ?m.

Abstract: A method of producing a gas-barrier laminated member having a gas-barrier layer formed by crosslinking the carboxyl groups of a polycarboxylic acid polymer with multivalent metal ions. The method comprises forming a layer (A) containing an alkaline compound of a multivalent metal on at least one surface of a plastic base material, applying a solution (b) obtained by dissolving a polycarboxylic acid polymer in a solvent containing at least water onto the layer (A) that contains the alkaline compound of the multivalent metal, and removing the solvent by a heat treatment so that a metal-ionically crosslinked structure is formed with the multivalent metal ions among the carboxyl groups in the solution (b). The gas-barrier laminated member has excellent adhesion to the base material, gas-barrier property, retort resistance and flexibility, and is efficiently produced by only being heated at a low temperature for a short period of time through a decreased number of simplified steps.

Abstract: A gas barrier laminate having an undercoating (A) which comprises a main resin, an isocyanate type curing agent and an alkaline compound of a polyvalent metal; and a barrier layer (B) of a polycarboxylic acid polymer forming an ionic crosslinking due to the polyvalent metal among the carboxyl groups; formed on at least one surface of a plastic base material (P), wherein a region (b) free of the alkaline compound of the polyvalent metal is formed in the undercoating (A) on the side of the barrier layer (B), the content of nitrogen in the region (b) being larger than the content of nitrogen in the undercoating (A) other than the region (b), the gas barrier laminate having excellent gas barrier property, retort resistance, producibility as well as excellent flexibility without developing interlayer peeling even if it is folded and featuring excellent interlayer adhesion.

Abstract: A gas barrier material comprising a polycarboxylic acid polymer, and containing 0.10 to 1.4% by weight of a monovalent metal element, at least not less than 5.0% by weight of a polyvalent metal element, and 0.01 to 3.0% by weight of a nitrogen element per the total weight of nitrogen and carbon. The gas barrier material exhibits excellent gas barrier property, excellent waterproof property after the bend working and excellent appearance on the surface of the coating.

Abstract: To provide a gas barrier laminate having a gas barrier layer obtained by crosslinking the carboxyl groups of a polycarboxylic acid-type polymer with polyvalent metal ions maintaining good productivity, the crosslinking being accelerated with polyvalent metal ions to exhibit more excellent gas barrier property. A gas barrier laminate comprising a layer (A) of a non-aqueous resin containing a metal element in the polymer skeleton thereof, and a layer (B) of a polycarboxylic acid-type polymer in which an ionic crosslinking is formed with a polyvalent metal among the carboxyl groups.

Abstract: A gas barrier laminate having an undercoating (A) which comprises a main resin, an isocyanate type curing agent and an alkaline compound of a polyvalent metal; and a barrier layer (B) of a polycarboxylic acid polymer forming an ionic crosslinking due to the polyvalent metal among the carboxyl groups; formed on at least one surface of a plastic base material (P), wherein a region (b) free of the alkaline compound of the polyvalent metal is formed in the undercoating (A) on the side of the barrier layer (B), the content of nitrogen in the region (b) being larger than the content of nitrogen in the undercoating (A) other than the region (b), the gas barrier laminate having excellent gas barrier property, retort resistance, producibility as well as excellent flexibility without developing interlayer peeling even if it is folded and featuring excellent interlayer adhesion.

Abstract: To provide a coating composition for undercoating which, in forming a gas-barrier layer having a crosslinked structure between a polycarboxylic acid type polymer and polyvalent metal ions by the heating at a low temperature for a short period of time, permits polyvalent metal ions to be easily and quickly fed into the polycarboxylic acid type polymer and, besides, into the whole gas-barrier layer. A coating composition containing, as chief components, a nonaqueous polyester polyol, an isocyanate compound, and an alkaline compound of a polyvalent metal that serves as an ion source for forming the crosslinked structure, wherein the nonaqueous polyester polyol contains a nonaqueous polyester polyol which contains a metal element in the resin skeleton thereof as an essential component, and the alkaline compound of the polyvalent metal has an average primary particle size in a range of 0.005 to 0.5 ?m.

Abstract: To provide a gas barrier laminate having a gas barrier layer obtained by crosslinking the carboxyl groups of a polycarboxylic acid-type polymer with polyvalent metal ions maintaining good productivity, the crosslinking being accelerated with polyvalent metal ions to exhibit more excellent gas barrier property. A gas barrier laminate comprising a layer (A) of a non-aqueous resin containing a metal element in the polymer skeleton thereof, and a layer (B) of a polycarboxylic acid-type polymer in which an ionic crosslinking is formed with a polyvalent metal among the carboxyl groups.

Abstract: A composition for forming a gas-barrier material, comprising a polycarboxylic acid-type polymer (A) and at least a bifunctional alicyclic epoxy compound (B). The composition for forming a gas-barrier material features excellent gas-barrier property, retort resistance and flexibility, can be cured at a low temperature in a short period of time without affecting the plastic base material, and contributes to improving the productivity.

Abstract: A gas-barrier material having a gas-barrier layer which comprises a polycarboxylic acid polymer, the gas-barrier layer having a chemical bond stemming from an isocyanate group formed in the surface thereof, and the content of nitrogen being at least not less than 1 atom % per the total amount of carbon, oxygen and nitrogen in the surface layer. The gas-barrier material comprising a polycarboxylic acid polymer which is a high hydrogen-bonding polymer exhibits excellent anti-blocking property without dependent upon the degree of crosslinking.

Abstract: A method of producing a gas-barrier laminated member having a gas-barrier layer formed by crosslinking the carboxyl groups of a polycarboxylic acid polymer with multivalent metal ions. The method comprises forming a layer (A) containing an alkaline compound of a multivalent metal on at least one surface of a plastic base material, applying a solution (b) obtained by dissolving a polycarboxylic acid polymer in a solvent containing at least water onto the layer (A) that contains the alkaline compound of the multivalent metal, and removing the solvent by a heat treatment so that a metal-ionically crosslinked structure is formed with the multivalent metal ions among the carboxyl groups in the solution (b). The gas-barrier laminated member has excellent adhesion to the base material, gas-barrier property, retort resistance and flexibility, and is efficiently produced by only being heated at a low temperature for a short period of time through a decreased number of simplified steps.

Abstract: A composition for forming a gas-barrier material, comprising a polycarboxylic acid-type polymer (A) and at least a bifunctional alicyclic epoxy compound (B). The composition for forming a gas-barrier material features excellent gas-barrier property, retort resistance and flexibility, can be cured at a low temperature in a short period of time without affecting the plastic base material, and contributes to improving the productivity.