Abstract: The present invention relates to a resin composition having an ethylene-vinyl alcohol copolymer (EVOH) component and a multi-layered structure containing the resin composition.

Abstract: The present invention relates to a resin composition having an ethylene-vinyl alcohol copolymer (EVOH) component and a multi-layered structure containing the resin composition.

Abstract: A melt-molded article containing an EVOH resin composition of low acetic acid odor and good long run workability is provided.

Abstract: An ethylene-vinyl alcohol copolymer resin having low odor of acetic acid and good long-run workability is provided. The ethylene-vinyl alcohol copolymer resin which contains an alkali metal salt (A) and has a very low extractable carboxylate content is obtained by a method including contacting the ethylene-vinyl alcohol copolymer resin with an aqueous solution containing carbon dioxide gas.

Abstract: A blow molded container made of an ethylene-vinyl alcohol copolymer resin composition, wherein the composition contains 0.1 to 20 ?mol/g, in terms of alkali metal, of an alkali metal salt (A), 0 to 2 ?mol/g of a carboxylate radical (C1) which is extracted through an immersion treatment in water at 95° C. for 10 hours, and 0 to 40 ?mol/g of a carboxylate radical (C2) which is extracted through an immersion treatment in a 0.05 N aqueous sodium hydroxide solution at 95° C. for 10 hours.

Abstract: A resin composition is provided which comprises from 50 to 95% by weight of a modified ethylene-vinyl alcohol copolymer (C) obtained by reacting an ethylene-vinyl alcohol copolymer (A) with a monovalent epoxy compound (B) having a molecular weight of 500 or less, and from 5 to 50% by weight of a soft resin (F) that has at least one functional group able to react with a hydroxyl group and has a Young's modulus at 23° C., 50% RH of 500 MPa or less, wherein the soft resin (F) is dispersed with an average particle diameter of 0.1 ?m or less in a matrix of the modified ethylene-vinyl alcohol copolymer (C). This resin composition is excellent in barrier properties and also in flex resistance and impact resistance at low temperature.

Abstract: An ethylene-vinyl alcohol copolymer resin having low odor of acetic acid and good long-run workability is provided. The ethylene-vinyl alcohol copolymer resin which contains an alkali metal salt (A) and has a very low extractable carboxylate content is obtained by a method including contacting the ethylene-vinyl alcohol copolymer resin with an aqueous solution containing carbon dioxide gas.

Abstract: The present invention relates to a resin composition having an ethylene-vinyl alcohol copolymer (EVOH) component and a multi-layered structure containing the resin composition.

Abstract: A melt-molded article containing an EVOH resin composition of low acetic acid odor and good long run workability is provided.

Abstract: A method for producing an ethylene-vinyl alcohol copolymer resin composition, wherein an ethylene-vinyl alcohol copolymer resin is contacted with an aqueous solution containing both carbon dioxide gas and at least one additive selected from the group consisting of an alkali metal salt (A) and a boron compound (B). The present invention can provide an environmentally friendly method for producing an EVOH resin composition, the method releasing no carboxylic acid such as acetic acid to the ambient atmosphere. In addition, the invention can provide an EVOH resin composition which emits less smell and is superior also in long-run workability.

Abstract: A resin composition is provided which comprises from 50 to 95% by weight of a modified ethylene-vinyl alcohol copolymer (C) obtained by reacting an ethylene-vinyl alcohol copolymer (A) with a monovalent epoxy compound (B) having a molecular weight of 500 or less, and from 5 to 50% by weight of a soft resin (F) that has at least one functional group able to react with a hydroxyl group and has a Young's modulus at 23° C., 50% RH of 500 MPa or less, wherein the soft resin (F) is dispersed with an average particle diameter of 0.1 ?m or less in a matrix of the modified ethylene-vinyl alcohol copolymer (C). This resin composition is excellent in barrier properties and also in flex resistance and impact resistance at low temperature.

Abstract: A multi-layer structure comprising a layer of an ethylene-vinyl alcohol copolymer (A), a layer of a carboxylic acid-modified polyolefin (B), a layer of a thermoplastic resin (C) having a solubility parameter of 11 or less, and a layer of a resin composition (E), wherein the resin composition (E) comprises an ethylene-vinyl alcohol copolymer (A), a carboxylic acid-modified polyolefin (B), a thermoplastic resin (C) and a thermoplastic resin (D) having at least one functional group selected from the group consisting of a boronic acid group and boron-containing groups capable of being converted into a boronic acid group in the presence of water, and the layer of an ethylene-vinyl alcohol copolymer (A) is laminated with the layer of a thermoplastic resin (C) or the layer of a resin composition (E) through the layer of a carboxylic acid-modified polyolefin (B). This provides a multi-layer structure which allows effective reuse of regrind and which is excellent in impact resistance and gas barrier properties.

Abstract: A method for producing an ethylene-vinyl alcohol copolymer resin composition, wherein an ethylene-vinyl alcohol copolymer resin is contacted with an aqueous solution containing both carbon dioxide gas and at least one additive selected from the group consisting of an alkali metal salt (A) and a boron compound (B). The present invention can provide an environmentally friendly method for producing an EVOH resin composition, the method releasing no carboxylic acid such as acetic acid to the ambient atmosphere. In addition, the invention can provide an EVOH resin composition which emits less smell and is superior also in long-run workability.

Abstract: Disclosed are a resin composition comprising an ethylene-vinyl alcohol copolymer and a multi-layered structure comprising the resin composition. The resin composition comprises an ethylene-vinyl alcohol copolymer, and is characterized in that, when it is heated in a nitrogen atmosphere at 220° C., its MFR (at 230° C. under a load of 10.9 kg) shows a minimum value within 10 hours after the start of heating it, and shows a maximum value (MFRmax) within 100 hours after showing its minimum value, that it contains from 0.05 to 4 ?mols/g of a carboxylic acid (A), and that it satisfies the following formulae (1) and (2): 0.5?MFRmax/MFR0?45 ??(1) 0.1?(a1)/(A)?1.0 ??(2) wherein MFRmax indicates the maximum value of MFR (at 230° C. under a load of 10.9 kg) of the resin composition heated in a nitrogen atmosphere at 220° C.; MFR0 indicates MFR (at 230° C under a load of 10.

Abstract: For providing a blow molded container comprising an EVOH resin composition which generates less sourness and which is superior in interlayer adhesiveness and providing an environmentally friendly production process in which no carboxylic acid such as acetic acid is released during the production and molding of the EVOH resin composition, disclosed is a method comprising blow molding an ethylene-vinyl alcohol copolymer resin composition obtained by contacting an ethylene-vinyl alcohol copolymer with an aqueous solution containing both carbon dioxide gas and at least one additive selected from the group consisting of an alkali metal salt (A) and a boron compound (B) and then drying the copolymer until the water content is reduced to 1% by weight or less.

Abstract: The present invention relates to a resin composition having an ethylene-vinyl alcohol copolymer (EVOH) component and a multi-layered structure containing the resin composition.

Abstract: Disclosed are a resin composition comprising an ethylene-vinyl alcohol copolymer and a multi-layered structure comprising the resin composition. The resin composition comprises an ethylene-vinyl alcohol copolymer which contains from 500 to 2000 ppm, in terms of the metal, of an alkali metal salt (A) and from 0.05 to 4.5 &mgr;mols/g of a carboxylic acid (B), where the ratio of the content (&mgr;mol/g) of a carboxylic acid (b1) having a molecular weight of at least 75 and its salt to the total content (&mgr;mol/g) of the carboxylic acid (B) and its salt is at least 0.1; or comprises an ethylene-vinyl alcohol copolymer which contains from 500 to 2000 ppm, in terms of the metal, of an alkali metal salt (A), from 10 to 500 ppm of a carboxylic acid (b2) having a molecular weight of smaller than 75, and from 10 to 500 ppm, in terms of the phosphate radical, of a phosphate compound (C). The resin composition has extremely good adhesiveness, and its moldings have good appearances with few gels and fish eyes.