Abstract: A brake disc includes an annular disc body and fins. The fins are radially disposed on a back surface of the disc body. At least one of the fins have a bolt hole at a central portion of the fin in a radial direction of the disc body. The disc body includes an inner circumferential portion. The inner circumferential portion is positioned inward from the bolt hole in the radial direction. The inner circumferential portion decreases in thickness as the inner circumferential portion extends inward in the radial direction. The fins each include a top surface and a convex portion. The convex portion protrudes inward from an imaginary plane in the radial direction. The imaginary plane passes an end portion of the top surface and an inner circumferential edge of the back surface.

Abstract: Provided are a multilayered article and a multilayered container excelling in oxygen barrier properties, delamination resistance, and transparency. The multilayered article has a polyester resin layer and a barrier layer. The polyamide resin contained in the barrier layer includes (A) a polyamide resin derived from xylylenediamine and adipic acid, (B) a polyamide resin derived from xylylenediamine, a linear aliphatic dicarboxylic acid, and isophthalic acid, and as necessary, (C) a polyamide resin derived from hexamethylenediamine, isophthalic acid, and terephthalic acid, and (D) an aliphatic polyamide resin. In the barrier layer, a ratio of the mass of the polyamide resin (A) to the total mass of the polyamide resin (B) and the polyamide resin (C) is from 98:2 to 15:85, the total content of the polyamide resin (A) and the polyamide resin (B) is 60 mass % or more, the content of the polyamide resin (B) is from 1 to 65 mass %, and the content of the aliphatic polyamide resin (D) is from 3 to 40 mass %.

Abstract: A multilayer container having a polyester layer comprising a thermoplastic polyester resin (X) and a polyamide layer comprising a polyamide resin (Y), wherein the polyester layer is an innermost layer and the polyamide layer is an interlayer, and the polyamide resin (Y) comprises a polyamide resin (Y-1) comprising a structural unit derived from a diamine and a structural unit derived from a dicarboxylic acid, 70 mol % or more of the structural unit derived from a diamine being a structural unit derived from xylylenediamine; and 70 mol % or more of the structural unit derived from a dicarboxylic acid being a structural unit derived from an ?,?-linear aliphatic dicarboxylic acid having 4 to 20 carbon atoms, and wherein a stretching ratio in a transverse direction (TD) is 2.2 times or more, and a stretching ratio in a machine direction (MD) to the stretching ratio in the transverse direction (TD) (MD/TD) is 0.6 or more and less than 1.0.

Abstract: Provided is a multilayered container including a polyester layer containing a thermoplastic polyester resin (X) and a polyamide layer containing a polyamide resin (Y), wherein the polyester layer is an innermost layer, and the polyamide layer is an intermediate layer. The polyamide resin (Y) has a constituent unit derived from a diamine and a constituent unit derived from a dicarboxylic acid. At least 70 mol % of the constituent units derived from a diamine are a constituent unit derived from a xylylenediamine, and at least 70 mol % of the constituent units derived from a dicarboxylic acid are a constituent unit derived from an ?,?-linear aliphatic dicarboxylic acid having from 4 to 20 carbons. When an overall thickness is 100%, the polyamide layer is present from a position of 5 to 35% from an inner surface, and a thickness of the polyamide layer is from 1 to 15%.

Abstract: To provide a method for producing a multilayered container, which has a layer containing a polyester resin as a main component and a layer containing a polyamide resin as a main component and in which delamination is less likely to occur. The method for producing a multilayered container contains biaxially stretching and blow molding a preform having a polyester resin layer and a polyamide resin layer; a storage elastic modulus G? of the polyamide resin being 5 MPa or more and less than 100 MPa; a moisture content of the polyamide resin layer being 0.5% or less; and the polyamide resin containing a xylylenediamine-based polyamide resin, 70 mol % or more of the structural units derived from diamine being derived from meta-xylylenediamine, from 80 to 97 mol % of the structural units derived from dicarboxylic acid being derived from an am-straight chain aliphatic dicarboxylic acid having from 4 to 8 carbons and from 20 to 3 mol % being derived from aromatic dicarboxylic acid.

Abstract: Provided is a resin laminate having: a polyester layer containing a polyester resin (A); and a mixed resin layer containing a polyamide resin (B) and a polyester resin (C). The polyamide resin (B) includes a constituent unit derived from a diamine and a constituent unit derived from a dicarboxylic acid, with 70 mol % or greater of the constituent derived from a diamine being a constituent unit derived from xylylenediamine, and 70 mol % or greater of the constituent unit derived from a dicarboxylic acid being a constituent unit derived from an ?,?-linear aliphatic dicarboxylic acid having from 4 to 20 carbons. Further, a radical concentration in the mixed resin layer is 1×10?12 mol/g or greater. Also provided are a multilayered film and a multilayered container formed from the resin laminate.

Abstract: Provided are: a container for chlorine-based liquid bleaching agent composition including a resin composition containing a polyester resin (A), a pigment (B) and a polyamide resin (C), wherein a content of the polyester resin (A) is 90 to 99 mass %, and a mass ratio [(B)/(C)] of the (B) and the (C) is 1/99 to 20/80; and a bleaching agent article including a container having a chlorine-based liquid bleaching agent composition accommodated therein.

Abstract: Object: To provide a resin composition having excellent oxygen barrier properties and transparency, and high tensile elongation at break; a molded article, a film, and a multilayer film.

Abstract: A multilayer container having a polyester layer comprising a thermoplastic polyester resin (X) and a polyamide layer comprising a polyamide resin (Y), wherein the polyester layer is an innermost layer and the polyamide layer is an interlayer, and the polyamide resin (Y) comprises a polyamide resin (Y-1) comprising a structural unit derived from a diamine and a structural unit derived from a dicarboxylic acid, 70 mol % or more of the structural unit derived from a diamine being a structural unit derived from xylylenediamine; and 70 mol % or more of the structural unit derived from a dicarboxylic acid being a structural unit derived from an ?,?-linear aliphatic dicarboxylic acid having 4 to 20 carbon atoms, and wherein a stretching ratio in a transverse direction (TD) is 2.2 times or more, and a stretching ratio in a machine direction (MD) to the stretching ratio in the transverse direction (TD) (MD/TD) is 0.6 or more and less than 1.0.

Abstract: A resin composition which has oxygen-barrier properties less apt to depend on humidity and has high transparency; and a formed article and a film which include the resin composition are provided.

Abstract: An object of the present invention is to provide an injection blow container that is excellent in moldability and impact resistance and furthermore, excellent in solvent resistance.

Abstract: Provided is a multilayered container including a polyester layer containing a thermoplastic polyester resin (X) and a polyamide layer containing a polyamide resin (Y), wherein the polyester layer is an innermost layer, and the polyamide layer is an intermediate layer. The polyamide resin (Y) has a constituent unit derived from a diamine and a constituent unit derived from a dicarboxylic acid. At least 70 mol % of the constituent units derived from a diamine are a constituent unit derived from a xylylenediamine, and at least 70 mol % of the constituent units derived from a dicarboxylic acid are a constituent unit derived from an ?,?-linear aliphatic dicarboxylic acid having from 4 to 20 carbons. When an overall thickness is 100%, the polyamide layer is present from a position of 5 to 35% from an inner surface, and a thickness of the polyamide layer is from 1 to 15%.

Abstract: Provided is a polyester-based resin composition capable of giving a molded article excellent in transparency and gas-barrier property even though the molded article requires stretching treatment, and also provided is a method for producing the composition. The method for producing a polyester-based resin composition includes a step of obtaining a master batch (M) containing a polyester resin (A) having a cyclic acetal structure or an alicyclic hydrocarbon structure, and a polyamide resin (B), and a step of melt-kneading the master batch (M) with a polyester resin (R) in which 70 mol % or more of the dicarboxylic acid unit is derived from an aromatic dicarboxylic acid and 70 mol % or more of the diol unit is derived from an aliphatic diol, thereby giving a polyester-based resin composition, in this order,. The glass transition temperature of the polyester resin (A) is 105° C. or lower, the content of the polyester resin (A) in the polyester-based resin composition is 0.5 to 15.

Abstract: Provided are a multilayered article and a multilayered container excelling in oxygen barrier properties, delamination resistance, and transparency. The multilayered article has a polyester resin layer and a barrier layer. The polyamide resin contained in the barrier layer includes (A) a polyamide resin derived from xylylenediamine and adipic acid, (B) a polyamide resin derived from xylylenediamine, a linear aliphatic dicarboxylic acid, and isophthalic acid, and as necessary, (C) a polyamide resin derived from hexamethylenediamine, isophthalic acid, and terephthalic acid, and (D) an aliphatic polyamide resin. In the barrier layer, a ratio of the mass of the polyamide resin (A) to the total mass of the polyamide resin (B) and the polyamide resin (C) is from 98:2 to 15:85, the total content of the polyamide resin (A) and the polyamide resin (B) is 60 mass % or more, the content of the polyamide resin (B) is from 1 to 65 mass %, and the content of the aliphatic polyamide resin (D) is from 3 to 40 mass %.

Abstract: Provided are a multilayered article and a multilayered container comprehensively excelling in oxygen barrier properties, delamination resistance, and transparency. The multilayered article includes a layer containing a polyester resin as a main component and a layer containing a polyamide resin as a main component; wherein the polyamide resin included in the layer containing a polyamide resin as a main component includes from 90 to 60 parts by mass of a polyamide resin (B) per 10 to 40 parts by mass of a polyamide resin (A). The polyamide resin (A) is an aliphatic polyamide resin.

Abstract: Provided is a multilayered article and a multilayered container having excellent delamination resistance while maintaining an excellent oxygen barrier property. The multilayered article includes a polyester resin layer and a barrier layer, wherein a polyamide resin contained in the barrier layer contains from 90 to 10 parts by mass of a polyamide resin (B) per 10 to 90 parts by mass of a polyamide resin (A). In the polyamide resin (A), 70 mol % or more of structural unit derived from a diamine is derived from xylylenediamine, and over 90 mol % of structural unit derived from a dicarboxylic acid is derived from adipic acid. In the polyamide resin (B), 70 mol % or more of structural unit derived from a diamine is derived from xylylenediamine, and of structural unit derived from a dicarboxylic acid, from 30 to 65 mol % is derived from an am-linear aliphatic dicarboxylic acid having from 4 to 20 carbons and from 70 to 35 mol % is derived from isophthalic acid.

Abstract: A resin composition which has oxygen-barrier properties less apt to depend on humidity and has high transparency; and a formed article and a film which include the resin composition are provided.

Abstract: Provided is a container for chlorine-based liquid bleaching agent composition, which accommodates a chlorine-based liquid bleaching agent composition therein and has excellent transparency, in which even when storied over a long period of time, the generation of a crack is suppressed. The container of the present invention is a container for chlorine-based liquid bleaching agent composition containing 90 to 99.5 parts by mass of a polyester resin (A) and 0.

Abstract: Provided is a polyester-based resin composition capable of giving a molded article excellent in transparency and gas-barrier property even though the molded article requires stretching treatment, and also provided is a method for producing the composition. The method for producing a polyester-based resin composition includes a step of obtaining a master batch (M) containing a polyester resin (A) having a cyclic acetal structure or an alicyclic hydrocarbon structure, and a polyamide resin (B), and a step of melt-kneading the master batch (M) with a polyester resin (R) in which 70 mol % or more of the dicarboxylic acid unit is derived from an aromatic dicarboxylic acid and 70 mol % or more of the diol unit is derived from an aliphatic diol, thereby giving a polyester-based resin composition, in this order,. The glass transition temperature of the polyester resin (A) is 105° C. or lower, the content of the polyester resin (A) in the polyester-based resin composition is 0.5 to 15.

Abstract: Object: To provide a resin composition having excellent oxygen barrier properties and transparency, and high tensile elongation at break; a molded article, a film, and a multilayer film.