Abstract: To provide an industrially useful ?-olefin•((meth)acrylic acid)-based olefin copolymer having both a high molecular weight and a high comonomer content, a catalyst component capable of realizing a production of two different kinds of ?-olefin•((meth)acrylic acid)-based olefin copolymers, and a production process using the catalyst. An ?-olefin•((meth)acrylic acid)-based olefin copolymer is produced by using a metal complex complexed with a ligand represented by the following formula (Y is phosphorus or arsenic) for a catalyst composition.

Abstract: A compound represented by the following general formula (1):

Abstract: The present invention provides a polyethylene resin composition for a foamable laminate which gives foamed cells having sufficient height and good appearance (foamed layer), even in the case of machining under high speed conditions at the time of extrusion lamination, a foamable laminate, a method for producing the same, a foamed converted paper, and a heat insulating container. The invention relates to a polyethylene resin composition for a foamable laminate, which is used for forming a polyethylene-based resin layer (I) for foaming on at least one side of a substrate mainly composed of paper, wherein the resin composition comprises a polyethylene-based resin (A) and satisfies the following properties (a-1) to (a-4): (a-1) the melt flow rate (MFR) of the polyethylene-based resin (A) as measured in accordance with JIS K7210 (190° C., a load of 21.

Abstract: The invention provides a specific metallocene compound and an olefin polymerization catalyst for use for a catalyst for producing an olefin polymer having a sufficiently high molecular weight while maintaining excellent copolymerizability at a polymerization temperature and under polymerization conditions industrially advantageous in polymerization of an olefin such as ethylene or the like, and provides a method for producing nan olefin polymer using the catalyst.

Abstract: The present invention relates to a method for producing a copolymer of ethylene and a polar group-containing olefin using as a catalyst a metal complex of group 10 elements having a structure represented by formula (C4) and (C5) (in the formula, “Men” represents a menthyl group and “Me” represents a methyl group). The method of the present invention makes it possible to produce a polar group-containing olefin polymer available for various applications, as being a high molecular weight body, which has been difficult to produce, and to produce the polymer in a molecular weight range such that the polymer has good moldability.

Abstract: An object of the present invention is to provide a novel production method of ethylene-based ionomer having excellent mechanical properties and heat resistance which exhibits remarkably excellent breaking elongation, breaking stress, and strain hardening, and has a high melting point. The present invention relates to a production method of an ethylene-based ionomer including a heating conversion step of heating a specific ethylene/unsaturated carboxylic acid ester copolymer and converting the ester group in the copolymer into a metal-containing carboxylate containing a metal ion of Group 1, 2, or 12 of the periodic table.

Abstract: The invention provides a specific metallocene compound and an olefin polymerization catalyst for use for a catalyst for producing an olefin polymer having a sufficiently high molecular weight while maintaining excellent copolymerizability at a polymerization temperature and under polymerization conditions industrially advantageous in polymerization of an olefin such as ethylene or the like, and provides a method for producing an olefin polymer using the catalyst.

Abstract: An object of the present invention is to provide a novel catalyst for olefin (co)polymer production, which has high activity without using a large amount of a cocatalyst and is aimed for obtaining a particulate olefin (co)polymer. The invention relates to an olefin polymerization catalyst which comprises: a solid carrier (1) that has been brought into contact with a specific compound; and a metal catalyst component (2) that contains a transition metal compound (C) containing a transition metal M belonging to Group 9, 10, or 11 of the periodic table and has a reactive group Ra.

Abstract: [Problem] To provide an ethylene-?-olefin copolymer having high mechanical strength and good molding properties. [Solution] Provided is an ethylene-?-olefin copolymer having a specific MFR, a specific density, and a specific molecular weight distribution, containing a suitable amount of a long-chain branching structure characterized by a branching index, and having a specific composition distribution structure characterized by solvent fractionation behavior.

Abstract: [Problem] To provide an ethylene-?-olefin copolymer that is highly effective in improving the molding properties of polyolefin resins, improving the balance between impact strength and stiffness, and improving transparency. [Solution] Provided is an ethylene-?-olefin copolymer having a specific MFR, a specific density, and a specific molecular weight distribution, containing a suitable amount of a long-chain branching structure characterized by a branching index, and having a specific composition distribution structure characterized by solvent fractionation behavior.

Abstract: [Problem] To provide an ethylene-?-olefin copolymer that is highly effective in improving the molding properties of polyolefin resins and at the same time highly effective improving the balance between impact strength and stiffness. [Solution] Provided is an ethylene-?-olefin copolymer having a specific MFR, a specific density, and a specific molecular weight distribution, containing a suitable amount of a long-chain branching structure characterized by a branching index, and having a specific composition distribution structure characterized by solvent fractionation behavior.

Abstract: Provided are a resin composition for solar cell encapsulant which contains an ethylene/?-olefin and is satisfactory in terms of crosslinkability, heat resistance, transparency, and impact resistance, a solar cell encapsulant formed from the resin composition, and a solar cell module obtained using the resin composition. Provided are a resin composition for solar cell encapsulant and the likes, which comprises an ethylene/?-olefin copolymer (A) having the following properties (a1) to (a3) and organic peroxide (B): (a1) a branch number derived from comonomer (N) and a total number of vinyl and vinylidene (V) in the ethylene/?-olefin copolymer satisfy the following relationship of expression (1): N×V?10, wherein N and V are the number, as determined by NMR, per total of 1,000 carbon atoms contained in the main chain and side chain, (a2) an MFR (190° C., 21.18-N load) is 0.1-100 g/10 min, and (a3) a density is 0.860-0.920 g/cm3.

Abstract: Provided is a process of effectively producing an ethylene/unsaturated carboxylic acid copolymer having excellent mechanical and thermal properties. A process for producing an ethylene/unsaturated carboxylic acid copolymer comprises: producing an ethylene/unsaturated carboxylic acid ester copolymer from ethylene and unsaturated carboxylic acid ester using a late-transition-metal complex catalyst; and heating the ethylene/unsaturated carboxylic acid ester copolymer at a temperature capable of converting the ester group into a carboxylic acid group, thereby converting into the ethylene/unsaturated carboxylic acid copolymer.

Abstract: An electroconductive polyethylene resin composition comprises: a resin component comprising a polar-group-containing polyethylene resin (A) and a polyethylene resin (B); and an electroconductive filler (E) incorporated into the resin component, wherein each of the proportions of the polar-group-containing polyethylene resin (A) and the polyethylene resin (B) in the resin component is the polar-group-containing polyethylene resin (A): 0.5 wt %-80 wt % and the polyethylene resin (B): 99.5 wt %-20 wt %, and the electroconductive polyethylene resin composition satisfies the following requirement (1): (1) surface resistivity: 10?/?-1010?/?.

Abstract: To provide an industrially useful ?-olefin•((meth)acrylic acid)-based olefin copolymer having both a high molecular weight and a high comonomer content, a catalyst component capable of realizing a production of two different kinds of ?-olefin•((meth)acrylic acid)-based olefin copolymers, and a production process using the catalyst. An ?-olefin•((meth)acrylic acid)-based olefin copolymer is produced by using a metal complex complexed with a ligand represented by the following formula (Y is phosphorus or arsenic) for a catalyst composition.

Abstract: An object of the present invention is to provide a polyethylene-based resin composition excellent in the moldability and at the same time, excellent in the balance between impact strength and stiffness as well as in the transparency, and a molded product and a film, which are obtained by the molding of the polyethylene-based resin composition. The polyethylene-based resin composition of the present invention comprises from 41 to 99 wt % of (A) an ethylene-based polymer satisfying specific conditions and from 1 to 59 wt/of (B) an ethylene-based polymer satisfying specific conditions, wherein MFR of the composition as a whole is from 0.05 to 50 g/10 min and the density is from 0.910 to 0.960 g/cm3.

Abstract: A compound represented by the following general formula (1):

Abstract: To provide an industrially useful ?-olefin.((meth)acrylic acid)-based olefin copolymer having both a high molecular weight and a high comonomer content, a catalyst component capable of realizing a production of two different kinds of ?-olefin.((meth)acrylic acid)-based olefin copolymers, and a production process using the catalyst. An ?-olefin.((meth)acrylic acid)-based olefin copolymer is produced by using a metal complex complexed with a ligand represented by the following formula (Y is phosphorus or arsenic) for a catalyst composition.

Abstract: An object of the present invention is to provide a polyethylene-based resin composition excellent in the moldability and at the same time, excellent in the balance between impact strength and stiffness as well as in the transparency, and a molded product and a film, which are obtained by the molding of the polyethylene-based resin composition. The polyethylene-based resin composition of the present invention comprises from 41 to 99 wt % of (A) an ethylene-based polymer satisfying specific conditions and from 1 to 59 wt % of (B) an ethylene-based polymer satisfying specific conditions, wherein MFR of the composition as a whole is from 0.05 to 50 g/10 min and the density is from 0.910 to 0.960 g/cm3.

Abstract: A polar-group-containing olefin copolymer which comprises 99.999 to 80 mol % of structural units derived from at least one of ethylene and ?-olefin having 3 to 20 carbon atoms and 20 to 0.001 mol % of structural units derived from at least one polar-group-containing monomer which contains an epoxy group and is represented by the structural formula (I) or structural formula (II), the polar-group-containing olefin copolymer being a random copolymer obtained by copolymerization in the presence of a transition metal catalyst and having a linear molecular structure.