Abstract: The disclosure relates to a gas barrier coating material composition containing a metal oxide and a phosphoric acid compound, and provides a coating material composition capable of forming a gas barrier coating film having more excellent oxygen barrier properties and water vapor barrier properties as well as transparency, without causing volatilization of an inorganic acid, by adding a polyvalent metal carboxylate salt soluble in phosphoric acid to a metal oxide and a phosphoric acid compound; and a gas barrier laminate provided with the gas barrier coating film (gas barrier layer).

Abstract: An oxygen-absorbing film including at least, from an outer layer side, a surface substrate layer having an oxygen barrier property, an oxygen-absorbing resin layer, and an inner surface substrate layer that contains a stretched PET substrate and is heat-sealable. The surface substrate layer, the oxygen-absorbing resin layer, and the inner surface substrate layer are laminated in this order. The oxygen-absorbing film provides an oxygen-absorbing film suitable as a packaging material that excels in oxidation suppression of packaging contents and in non-sorption of aroma components and also exhibits excellent tearability.

Abstract: The present invention relates to a gas-barrier coating composition containing a metal oxide, a phosphoric acid compound, and an amine compound. The present invention provides a gas-barrier film that features excellent oxygen-barrier property, excellent water vapor-barrier property as well as excellent transparency, and a gas-barrier laminate that includes the film.

Abstract: A gas barrier film including a reaction product formed by a reaction of a zirconium oxide and a phosphoric acid compound. Also disclosed is a gas barrier laminate including the gas barrier film and a composition for forming a gas barrier layer.

Abstract: An organic resin-covered surface-treated metal sheet having formed on at least one surface of a metal sheet a surface-treatment coating and an organic resin film on the coating. The surface-treatment coating contains a polyvalent metal compound and a poly-carboxylic acid type polymer containing not less than 60 mol % constituent units derived from at least one polymerizable monomer selected from acrylic acid, maleic acid, methacrylic acid, and itaconic acid. The surface-treatment coating measured for its infrared-ray absorption spectra has a peak height ratio (?/?) of a maximum absorption peak height (?) in a wave number range of 1660 to 1760 cm?1 and a maximum absorption peak height (?) in a wave number range of 1490 to 1659 cm?1 is from 0.37 to 2.35. Also disclosed is a can body made from the organic resin-covered surface-treated metal sheet and a can lid made from the organic resin-covered surface-treated metal sheet.

Abstract: An organic resin-covered surface-treated metal sheet having formed on at least one surface of a metal sheet a surface-treatment coating and an organic resin film on the coating. The surface-treatment coating contains a polyvalent metal compound and a poly-carboxylic acid type polymer containing not less than 60 mol % constituent units derived from at least one polymerizable monomer selected from acrylic acid, maleic acid, methacrylic acid, and itaconic acid. The surface-treatment coating measured for its infrared-ray absorption spectra has a peak height ratio (?/?) of a maximum absorption peak height (?) in a wave number range of 1660 to 1760 cm?1 and a maximum absorption peak height (?) in a wave number range of 1490 to 1659 cm?1 is from 0.37 to 2.35. Also disclosed is a can body made from the organic resin-covered surface-treated metal sheet and a can lid made from the organic resin-covered surface-treated metal sheet.

Abstract: A chromium-free surface-treated metal sheet includes a metal sheet, a surface-treatment coating that contains a polycarboxylic acid type polymer and a zirconium compound and that is formed on at least one surface of the metal sheet, and a coating that contains a polyester resin, a phenol resin and an acid catalyst and that is formed on the surface-treatment coating. The surface-treated metal sheet can be used for producing cans and can lids maintaining excellent dent resistance even for acidic beverages, without permitting the organic resin film formed on the coating to be peeled even under high-temperature and wet environments during a sterilization treatment or the like, and maintaining excellent hot water-resistant adhering property.

Abstract: An organic resin-covered surface-treated metal sheet having formed on at least one surface of a metal sheet a surface-treatment coating and an organic resin film on the surface-treatment coating. The surface-treatment coating contains a poly-carboxylic acid type polymer and a polyvalent metal compound. The surface-treatment coating measured for its infrared-ray absorption spectra has a peak height ratio (?/?) of a maximum absorption peak height (?) in a wave number range of 1660 to 1760 cm?1 and a maximum absorption peak height (?) in a wave number range of 1490 to 1659 cm?1 of from 0.05 to 2.35.

Abstract: A surface-treated aluminum plate obtained by forming, on at least one surface of an aluminum plate, a conversion-coated layer that contains a polyester resin and a zirconium compound or a titanium compound. The surface-treated aluminum plate excellently adheres to an organic resin coating and can be used as a material for producing cans featuring excellent corrosion resistance and shock resistance.

Abstract: A chromium-free surface-treated metal sheet includes a metal sheet, a surface-treatment coating that contains a polycarboxylic acid type polymer and a zirconium compound and that is formed on at least one surface of the metal sheet, and a coating that contains a polyester resin, a phenol resin and an acid catalyst and that is formed on the surface-treatment coating. The surface-treated metal sheet can be used for producing cans and can lids maintaining excellent dent resistance even for acidic beverages, without permitting the organic resin film formed on the coating to be peeled even under high-temperature and wet environments during a sterilization treatment or the like, and maintaining excellent hot water-resistant adhering property.

Abstract: A surface-treated aluminum plate obtained by forming, on at least one surface of an aluminum plate, a conversion-coated layer that contains a polyester resin and a zirconium compound or a titanium compound. The surface-treated aluminum plate excellently adheres to an organic resin coating and can be used as a material for producing cans featuring excellent corrosion resistance and shock resistance.

Abstract: An organic resin-covered surface-treated metal sheet having formed on at least one surface of a metal sheet a surface-treatment coating and an organic resin film on the surface-treatment coating. The surface-treatment coating contains a poly-carboxylic acid type polymer and a polyvalent metal compound. The surface-treatment coating measured for its infrared-ray absorption spectra has a peak height ratio (?/?) of a maximum absorption peak height (?) in a wave number range of 1660 to 1760 cm?1 and a maximum absorption peak height (?) in a wave number range of 1490 to 1659 cm?1 of from 0.05 to 2.35.

Abstract: A coated metal sheet further covered with an organic resin obtained by forming, on at least one surface of a metal sheet, a coating film and further forming thereon an organic resin layer. The coating film contains a polyester resin having a glass transition temperature of 20 to 55° C., a phenol resin and an acid catalyst, in order to be able to provide the coated metal sheet further covered with the organic resin that is suited for producing cans and can lids having excellent applicability for producing cans and excellent dent resistance.

Abstract: A chromium-free coated metal sheet obtained by forming a coating on at least one surface of a metal sheet, and a coated metal sheet further covered with an organic resin film obtained by forming an organic resin film on the coating of the coated metal sheet, the coating thereof containing a main resin, a phenol resin as a curing agent and a tannic acid as an additive. The metal sheets have excellent dent resistance to cope with even acidic beverages, have excellent applicability for producing cans, and are capable of providing cans and can lids that have excellent hot water-resistant adhering property without permitting the organic resin film to peel even if exposed to a high temperature and highly humid environment such as of the step of sterilization and, besides, offering advantage in productivity and economy.

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: A surface-treated aluminum plate obtained by forming, on at least one surface of an aluminum plate, a conversion-coated layer that contains a polyester resin and a zirconium compound or a titanium compound. The surface-treated aluminum plate excellently adheres to an organic resin coating and can be used as a material for producing cans featuring excellent corrosion resistance and shock resistance.