Abstract: The present invention provides the resin composition having excellent inflation moldability by which a film having high water vapor transmission rate (WVTR) and low elastic modulus can be produced, and a film which is formed from the resin composition. The present invention relates to a resin composition comprising a polyamide resin (A) and a polyvinyl alcohol-based resin (B) which includes 2-10% by mole of structural unit represented by the following general formula (1) and has a degree of saponification of 70-90% by mole, and a film which is formed from the resin composition. [In the formula, R1 to R6 each independently represent a hydrogen atom or an organic group, and X represents a single bond or a linking chain.

Abstract: A laminate-shaping support material includes one of: a resin composition containing a polyvinyl alcohol resin having a primary hydroxyl group at its side chain, and having a heat of fusion of 10 to 30 J/g at its melting point (Embodiment (X)); and a resin composition containing a polyvinyl alcohol resin, and a block copolymer including a polymer block of an aromatic vinyl compound, at least one of a polymer block of a conjugated diene compound and a block of a hydrogenated conjugated diene compound, and a functional group reactive with a hydroxyl group (Embodiment (Y)). Therefore, the laminate shaping support material according to Embodiment (X), for example, is excellent in shape stability and adhesiveness to a model material. The laminate shaping support material according to Embodiment (Y) is excellent in peelability and forming stability.

Abstract: Provided is a resin composition from which a melt molded product which is excellent in transparency, gas barrier property and flexibility and has biodegradability can be obtained. The present invention relates to a resin composition, which comprises a polyvinyl alcohol-based resin (i) comprising a structural unit represented by the following general formula (1) and an aliphatic-aromatic polyester (ii) comprising a specific component, wherein each of R1, R2 and R3 independently represents a hydrogen atom or an organic group, X represents a single bond or a bonding chain, and each of R4, R5 and R6 independently represents a hydrogen atom or an organic group.

Abstract: A resin composition of the present invention comprises a polyvinyl alcohol (PVA)-based resin (A) which comprises a structural unit represented by the following general formula (1) and has a degree of saponification of 85-94% by mole and a polybutylene adipate/butylene terephthalate copolymer (PBAT) (B), wherein a content ratio of the PVA-based resin (A) to the PBAT (B) ((A)/(B)) is from 80/20 to 60/40 (by weight). [In the formula, R1 to R6 each independently represent a hydrogen atom or an organic group, and X represents a single bond or a linking chain.

Abstract: The present invention provides the resin composition having excellent inflation moldability by which a film having high water vapor transmission rate (WVTR) and low elastic modulus can be produced, and a film which is formed from the resin composition. The present invention relates to a resin composition comprising a polyamide resin (A) and a polyvinyl alcohol-based resin (B) which includes 2-10% by mole of structural unit represented by the following general formula (1) and has a degree of saponification of 70-90% by mole, and a film which is formed from the resin composition. [In the formula, R1 to R6 each independently represent a hydrogen atom or an organic group, and X represents a single bond or a linking chain.

Abstract: There is provided a resin composition affording a melt-molded article having excellent gas barrier properties and flex crack resistance. The present invention relates to a resin composition comprising a polyvinyl alcohol resin (A) having a 1,2-diol structural unit represented by the following general formula (1), a styrene-based thermoplastic elastomer (B), and a polyamide graft block copolymer (C) containing a polymer block of an aromatic vinyl compound and a polymer block of an olefinic compound in a main chain and having a graft chain composed of a polyamide: wherein each of R1, R2, and R3 independently represents a hydrogen atom or an organic group, X represents a single bond or a linking chain, and each of R4, R5, and R6 independently represents a hydrogen atom or an organic group.

Abstract: Provided is a resin composition from which a melt molded product which is excellent in transparency, gas barrier property and flexibility and has biodegradability can be obtained. The present invention relates to a resin composition, which comprises a polyvinyl alcohol-based resin (i) comprising a structural unit represented by the following general formula (1) and an aliphatic-aromatic polyester (ii) comprising a specific component, wherein each of R1, R2 and R3 independently represents a hydrogen atom or an organic group, X represents a single bond or a bonding chain, and each of R4, R5 and R6 independently represents a hydrogen atom or an organic group.

Abstract: Disclosed is a polyvinyl alcohol resin composition capable of providing a melt-molded article with superior gas barrier properties and flex crack resistance. The resin composition comprises (A) a PVA resin having 1,2-diol unit in side chain thereof; and (B) a mixture of block copolymers each having an aromatic vinyl polymer block, and a conjugated diene polymer block and/or hydrogenated thereof, wherein the (B) mixture of block copolymers includes (B1) a block copolymer having no carboxyl group and (B2) a block copolymer modified with a carboxyl group-containing compound.

Abstract: There is provided a resin composition affording a melt-molded article having excellent gas barrier properties and flex crack resistance. The present invention relates to a resin composition comprising a polyvinyl alcohol resin (A) having a 1,2-diol structural unit represented by the following general formula (1), a styrene-based thermoplastic elastomer (B), and a polyamide graft block copolymer (C) containing a polymer block of an aromatic vinyl compound and a polymer block of an olefinic compound in a main chain and having a graft chain composed of a polyamide: wherein each of R1, R2, and R3 independently represents a hydrogen atom or an organic group, X represents a single bond or a linking chain, and each of R4, R5, and R6 independently represents a hydrogen atom or an organic group.

Abstract: A multilayer structure includes (A) a layer consisting primarily of a polyethylene terephthalate resin which includes a dicarboxylic acid component unit including terephthalic acid and a diol component unit primarily including ethylene glycol, the dicarboxylic acid component including a non-terephthalic-acid dicarboxylic acid in a copolymerization ratio of 15 to 40 mol % based on the overall amount of the dicarboxylic acid component; and (B) a layer provided in stacked adjacent relation to the layer (A) and consisting primarily of a polyvinyl alcohol resin having a structural unit represented by the following general formula (1):

Abstract: Disclosed is a polyvinyl alcohol resin composition capable of providing a melt-molded article with superior gas barrier properties and flex crack resistance. The resin composition comprises (A) a PVA resin having 1,2-diol unit in side chain thereof; and (B) a mixture of block copolymers each having an aromatic vinyl polymer block, and a conjugated diene polymer block and/or hydrogenated thereof, wherein the (B) mixture of block copolymers includes (B1) a block copolymer having no carboxyl group and (B2) a block copolymer modified with a carboxyl group-containing compound.

Abstract: A PVA resin composition is provided which is excellent in melt-formability and free from emanation of odor in a melt-forming process, and is capable of providing a product free from residual odor, a highly transparent film and a laminate film having higher interlayer adhesive strength. The resin composition comprises: (A) a polyvinyl alcohol resin having a 1,2-diol structural unit represented by the following formula (1): and having a saponification degree of 80 to 97.9 mol %; and (B) an alkylene oxide adduct of a polyvalent alcohol containing 5 to 9 moles of an alkylene oxide per 1 mole of the polyvalent alcohol.

Abstract: A PVA resin composition is provided which is excellent in melt-formability and free from emanation of odor in a melt-forming process, and is capable of providing a product free from residual odor, a highly transparent film and a laminate film having higher interlayer adhesive strength. The resin composition comprises: (A) a polyvinyl alcohol resin having a 1,2-diol structural unit represented by the following general formula (1): and having a saponification degree of 80 to 97.9 mol %; and (B) an alkylene oxide adduct of a polyvalent alcohol containing 5 to 9 moles of an alkylene oxide per 1 mole of the polyvalent alcohol.

Abstract: A water-soluble polyvinyl alcohol resin filament is provided, which is formed by melt-spinning a material consisting essentially of a water-soluble polyvinyl alcohol resin having a 1,2-diol structural unit represented by the following general formula (1). A nonwoven fabric is also provided, which is produced by using the water-soluble polyvinyl alcohol resin filament. Therefore, the nonwoven fabric is excellent in water solubility at a lower temperature, and substantially free from bubbling during dissolution thereof in water. In addition, a fully saponified PVA can be used for melt-forming. This suppresses emanation of acetic acid odor, thereby improving the working environment. wherein R1, R2, R3, R4, R5 and R6, which may be the same or different, are each a hydrogen atom or a monovalent organic group, and X is a single bond or a connecting chain.