Abstract: The titanium porous body according to the present invention is in a form of a sheet, and has a thickness of 0.3 mm or less, and a bending strain at break of 0.005 or more, wherein, for a three-dimensional surface texture of at least one surface of the titanium porous body, an arithmetic mean height Sa is 2.5 ?m or less, a maximum height Sz is 30 ?m or less, an aspect ratio Str of the surface texture is 0.93 or more, and an arithmetic mean curvature Spc of a peak is 4.8 (1/?m) or less.

Abstract: Provided is an olefin polymerization catalyst characterized by including (I) a solid catalyst component for olefin polymerization containing at least magnesium, titanium, halogen, and an internal electron-donating compound, (II) an organoaluminum compound, and (III) an external electron-donating compound, in which in the olefin polymerization catalyst, there exist, as the internal electron-donating compound, at least one or more compounds selected from a first internal electron-donating compound and one or more compounds selected from a second internal electron-donating compound, and as the external electron-donating compound, there exist at least one or more compounds selected from an alkoxysilane compound and an aminosilane compound.

Abstract: Provided is an olefin polymerization catalyst including: (I) a solid catalyst component for olefin polymerization containing at least magnesium, titanium, halogen, and as an internal electron-donating compound, one or more compounds selected from succinate diester compounds and one or more compounds selected from phthalate diester compounds; (II) an organoaluminum compound; and (III) as an external electron-donating compound, at least one or more compounds selected from alkoxysilane compounds and one or more compounds selected from (alkylamino)alkylsilane compounds. According to the present invention, an olefin polymerization catalyst that can produce an olefin polymer having a high flexural modulus and a high impact resistance, and a method for producing an olefin polymer using the catalyst can be provided.

Abstract: Provided is an olefin polymerization catalyst characterized in that the catalyst includes (I) a solid catalyst component for olefin polymerization containing at least magnesium, titanium, halogen and an internal electron-donating compound, (II) an organoaluminum compound, and (III) an external electron-donating compound, wherein in the olefin polymerization catalyst, there exist, as the internal electron-donating compound, at least one or more compounds selected from a first internal electron-donating compound and one or more compounds selected from a second internal electron-donating compound, and as the external electron-donating compound, there exists at least one or more compounds selected from an alkoxysilane compound and an aminoalkoxysilane compound.

Abstract: Provided is an olefin polymerization catalyst including: (I) as a solid catalyst component for olefin polymerization, (a) a solid catalyst component for olefin polymerization containing at least magnesium, titanium, halogen, and as an internal electron-donating compound, a succinate diester compound, and (b) a solid catalyst component for olefin polymerization containing at least magnesium, titanium, halogen, and as an internal electron-donating compound, a phthalate diester compound, (II) an organoaluminum compound, and (III) as an external electron-donating compound, at least one or more compounds selected from alkoxysilane compounds and one or more compounds selected from (alkylamino)alkylsilane compounds. According to the present invention, an olefin polymerization catalyst that can produce an olefin polymer having a high flexural modulus and a high impact resistance, and a method for producing an olefin polymer using the catalyst can be provided.

Abstract: The present invention provides a solid catalyst component for polymerization of an olefin, which appropriately suppresses a decrease in polymerization activity per unit time when having been supplied to the polymerization of the olefin, even without using a phthalic acid ester, and can easily prepare a polymer of an olefin, in which drying efficiency is improved, and a content ratio of a remaining volatile organic compound is greatly reduced in a short period of time. The solid catalyst component for polymerization of an olefin includes magnesium, titanium, halogen and a 1,3-diether compound, wherein a ratio of the 1,3-diether compound contained in the solid catalyst component for polymerization of an olefin is 2.50 to 15.00% by mass, and a specific surface area of the solid catalyst component for polymerization of an olefin is 250 m2/g or larger.

Abstract: A solid catalyst component mixture for polymerizing olefins that allows a polymer of olefins having both a high melt flowability and rigidity to be easily produced is provided. A solid catalyst component mixture for polymerizing olefins comprises: a first solid catalyst component for polymerizing olefins containing magnesium, titanium, halogen and a succinate diester compound, and a second solid catalyst component for polymerizing olefins containing magnesium, titanium, halogen and a phthalate diester compound, at a mass ratio of First solid catalyst component for polymerizing olefins:Second solid catalyst component for polymerizing olefins=37:63 to 87:13.

Abstract: A method is disclosed for producing a catalyst, which suppresses a decrease in polymerization activity due to early deactivation of the active site after the catalyst has been formed, exhibits excellent catalyst activity at the time of polymerization of olefins, and can produce polymers of olefins, which are excellent in stereoregularity. The method for producing a catalyst includes contacting a solid catalyst component (A) containing magnesium, titanium, halogen and an internal electron-donating compound, and a specific organoaluminum compound (B) represented by the general formula (I), with each other, wherein at least one selected from the solid catalyst component (A) and the organoaluminum compound (B) is previously subjected to contact treatment with a hydrocarbon compound having one or more vinyl groups, in an organic solvent containing 30% by mass or more of one or more compounds selected from saturated aliphatic hydrocarbon compounds having 20 or more carbon atoms.

Abstract: It is intended to provide a method for producing a catalyst for olefin polymerization which exhibits excellent catalytic activity in a polymerization treatment and permits production of a polymer excellent in stereoregularity, melt flowability, etc., even when the polymerization catalyst is prepared in an inert gas atmosphere by using a solid catalytic component comprising an electron-donating compound other than a phthalic acid ester. The method for producing a catalyst for olefin polymerization comprises performing a pre-contact treatment of bringing a solid catalytic component (A) comprising a magnesium atom, a titanium atom, a halogen atom and an electron-donating compound having no phthalic acid ester structure, a specific organoaluminum compound (B) and an external electron-donating compound (C) into contact with each other at a temperature of lower than 15° C. for a time of 30 minutes or shorter in the absence of the olefin.

Abstract: Provided is a catalyst for polymerization of an olefin, capable of easily producing a propylene homopolymer with an excellent melt flow rate and moldability, as well as further excellent flexural modulus, despite containing a solid catalyst component for polymerization of an olefin comprising a compound other than phthalate esters as an internal electron-donating compound. A catalyst for polymerization of an olefin, comprising: a solid catalyst component for polymerization of an olefin, comprising magnesium, titanium, halogen, and a succinic acid diester compound, wherein a ratio (S/T), represented by a total content of an internal electron-donating compound with the succinic acid diester compound as a main component(S) to a content of the titanium (T), is 0.60 to 1.30 in a molar ratio, an organoaluminum compound, and one or more external electron-donating compounds selected from specific aminosilane compounds.

Abstract: A solid catalyst component for olefin polymerization containing magnesium, titanium, a halogen, a carbonate compound (A) represented by the following general formula (1): R1—O—C(?O)—O—Z—O—R2 (1), and an ether compound (B) having two or more ether groups, wherein a proportion of the ether compound (B) in a total of the carbonate compound (A) and the ether compound (B) is 33.0 to 80.0 mol %. The invention can provide a solid catalyst component for olefin polymerization using an ether compound having two or more ether groups and a carbonate compound as internal electron donating compounds, wherein the solid catalyst component for olefin polymerization has, in the polymerization of olefins, a moderately wide molecular weight distribution of an olefin polymer obtained therefrom and can increase the polymerization activity.

Abstract: A solid catalyst component for polymerization of an olefin is disclosed including: magnesium, titanium, halogen, and a succinic acid diester compound, wherein a content of the succinic acid diester compound in a total content of the components in terms of the solid content is 15.0% by mass or more, a ratio (S/T), represented by a content of the succinic acid diester compound(S) in the total content of the components to a content of the titanium (T) in the total content of the components, is 0.60 to 1.30 in a molar ratio, and a total pore volume of a diameter of 1 ?m or less as measured by a mercury intrusion method is 0.3 to 1.0 cm3/g, and a specific surface area is 200 m2/g or more.

Abstract: A method for producing a metallic green compact 61 relates to a method for producing the green compact 61 having at least one recess 62, including a step of subjecting a raw material powder filled in a resin mold 1 to cold isostatic pressing while placing a resin core material 11 having a shape corresponding to the recess 62 at a position corresponding to the recess 62 in the resin mold 1.

Abstract: A method for manufacturing a porous metal body according to the present invention includes: a surface oxidizing step of heating a titanium-containing powder in an atmosphere containing oxygen at a temperature of 250° C. or more for 30 minutes or more to provide a surface-oxidized powder; and a sintering step of depositing the surface-oxidized powder in a dry process, and sintering the surface-oxidized powder by heating it in a reduced pressure atmosphere or an inert atmosphere at a temperature of 950° C. or more.

Abstract: Provided is a solid catalyst component for olefin polymerization which is capable of exerting favorable ethylene responsiveness while forming a propylene homopolymer having high stereoregularity, when subjected to ethylene-propylene copolymerization reaction. The present invention provides a solid catalyst component for olefin polymerization, comprising titanium, magnesium, halogen, and an internal electron-donating compound, wherein the internal electron-donating compound comprises an electron-donating compound (i) having a phthalic acid ester structure, and an electron-donating compound (ii) having two or more kinds of groups selected from an ether group, an ester group and a carbonate group and having no phthalic acid ester structure, wherein a content ratio of the electron-donating compound (ii) having two or more kinds of groups selected from an ether group, an ester group and a carbonate group and having no phthalic acid ester structure is 0.5 to 1.5% by mass.

Abstract: To provide a solid catalyst component for polymerization of an olefin, which can easily produce a polymer of an olefin, which is excellent in fluidity and also is high in rigidity even though the molecular weight distribution is narrow, without performing complicated polymerization treatment. A solid catalyst component for polymerization of an olefin includes magnesium, titanium and halogen, and further includes an aromatic carboxylic acid ester and a 1,3-diether compound as internal electron-donating compounds, wherein a content ratio of the titanium is 0.5 to 2.0% by mass, a content ratio of the aromatic carboxylic acid ester in a total content of the internal electron-donating compounds is 40 to 60 mol %, and a content ratio of the 1,3-diether compound in the total content of the internal electron-donating compounds is 40 to 60 mol %.

Abstract: The titanium-based porous body according to the present invention is in a form of a sheet and contains titanium, and the titanium-based porous body has a thickness of 0.8 mm or less, a porosity of 30% to 65%, a maximum height Rz1 of one sheet surface of 30 ?m or less, a ratio of a maximum height Rz2 of other sheet surface to the maximum height Rz1 of the one sheet surface (Rz2/Rz1) of 1.2 or more, and a compression deformation rate of 19% or less.

Abstract: Provided is a novel olefin polymer which is excellent in lightness and moldability, has high rigidity and yields molded products excellent in flexural elasticity. The olefin polymer includes a propylene initial polymerization product formed in the presence of an olefin polymerization catalyst which is a contact reaction product of an olefin polymerization solid catalyst component containing a titanium atom, a magnesium atom, a halogen atom and an internal electron donating compound, at least one organoaluminum compound selected from the compounds of the general formula (I), and a first external electron donating compound; and a polypropylene part formed of a propylene polymerization product formed in the presence of the olefin polymerization catalyst and a second external electron donating compound higher in adsorption to the surface of the olefin polymerization solid catalyst component than the first external electron donating compound.

Abstract: Provided is a solid catalyst component for olefin polymerization capable of suitably producing polymer particles with a suppressed content ratio of fine powder and reduced surface stickiness at high activity when subjected to polymerization of an olefin. The solid catalyst component for olefin polymerization contains magnesium, titanium, halogen and an internal electron-donating compound, in which a cross-sectional pore area ratio is 10 to 50%, and a ratio MXi/MXs of a cross-sectional pore area ratio (MXi) in a region of less than 50% in a radial direction to a cross-sectional pore area ratio (MXs) in a region of 50% or more in the radial direction from a particle center is 0.50 to 2.00.

Abstract: The present invention provides a method for producing a catalyst for polymerization of an olefin, which suppresses a decrease in polymerization activity due to early deactivation of the active site after the catalyst has been formed, exhibits excellent catalyst activity at the time of polymerization of olefins, and can produce polymers of olefins, which are excellent in stereoregularity. The method for producing a catalyst for polymerization of an olefin includes contacting a solid catalyst component (A) containing magnesium, titanium, halogen and an internal electron-donating compound, and a specific organoaluminum compound (B) represented by the general formula (I), with each other, wherein at least one selected from the solid catalyst component (A) and the organoaluminum compound (B) is previously subjected to contact treatment with a hydrocarbon compound having one or more vinyl groups.