Abstract: A masterbatch composition made from or containing: 65 to 85 wt % of a propylene homopolymer or copolymer as component (1) containing 0 to 3 wt % of ethylene or one or more C4-C10-?-olefin-derived units; and 15 to 35 wt % of a propylene-ethylene copolymer as component (2) containing 25 to 35 wt % of ethylene-derived units, wherein the masterbatch composition has: 1) a melt flow rate (230° C., load: 21.18 N) of 5 to 30 g/10 minutes; 2) xylene insolubles with an Mw of 10×104 to 30×104 and an Mw/Mn of 6 to 20 as measured by GPC; and 3) xylene solubles with an intrinsic viscosity of 5.5 to 9.0 dl/g.

Abstract: A method for secondary-molding a polymer nano oriented crystal material in accordance with an embodiment of the present invention includes the steps of: heating the polymer nano oriented crystal material so that the polymer nano oriented crystal material changes into a mobile phase or a melt having a dense entanglement network structure; molding the polymer nano oriented crystal material which changed into the mobile phase or the melt including the dense entanglement network in the step; and cooling the polymer nano oriented crystal material, which has undergone the step, until the polymer nano oriented crystal material changes into an ordered phase.

Abstract: The purpose of the present invention is to produce an alpha-olefin polymer having excellent production stability utilizing a long-lasting high catalytic activity. Provided is a method for producing an alpha-olefin polymer using a catalyst comprising: (A) a solid catalyst component comprising, as essential components, magnesium, titanium, a halogen and an electron donor compound; (B) an organoaluminum compound; and (C) an electron donor compound, the method comprising: (1) pre-polymerizing an alpha-olefin in the presence of the components (A) and (B) to produce a pre-polymerized catalyst; (2) bringing the resultant pre-polymerized catalyst into contact with a contact product that is produced by contacting the components (B) and (C) with each other in advance; and (3) adding the pre-polymerized catalyst that has been contacted with the contact product to a polymerization reaction vessel in which an alpha-olefin is introduced to polymerize the alpha-olefin.

Abstract: A process and apparatus for manufacturing a crystalline resin film or sheet. This manufacturing apparatus includes: an extruder that melts crystalline resin while supplying it; a gear pump that is provided on the downstream side of the extruder; a die which is provided on the downstream side of the gear pump, and which has a slit-shaped aperture; a cooling apparatus which cools film-shaped or sheet-shaped crystalline resin (A) discharged in a melted state from the die to a temperature which is not less than the crystallization temperature but not more than the melting point; and a pair of pinch rolls that press-roll between them the film-shaped or sheet-shaped crystalline resin (B) which has passed through the cooling apparatus (40), wherein the pair of guide rolls are positioned such that the thickness of the film-shaped or sheet-shaped crystalline resin (B) which has passed through the cooling apparatus is between 1.3 and 8.0 times the thickness of the film or sheet (C, D) after it has been press-rolled.

Abstract: The purpose of the present invention is to produce an alpha-olefin polymer having excellent production stability utilizing a long-lasting high catalytic activity. Provided is a method for producing an alpha-olefin polymer using a catalyst comprising: (A) a solid catalyst component comprising, as essential components, magnesium, titanium, a halogen and an electron donor compound; (B) an organoaluminum compound; and (C) an electron donor compound, the method comprising: (1) pre-polymerizing an alpha-olefin in the presence of the components (A) and (B) to produce a pre-polymerized catalyst; (2) bringing the resultant pre-polymerized catalyst into contact with a contact product that is produced by contacting the components (B) and (C) with each other in advance; and (3) adding the pre-polymerized catalyst that has been contacted with the contact product to a polymerization reaction vessel in which an alpha-olefin is introduced to polymerize the alpha-olefin.

Abstract: A polymer sheet according to at least one embodiment of the present invention is a polymer sheet whose main component is oriented nanocrystals of a polymer, and which satisfies the following conditions (I), (II), and (III): (I) having a crystallinity of not less than 70%; (II) having a tensile strength at break of not less than 100 MPa and a tensile modulus of not less than 3 GPa; and (III) having an average thickness of not less than 0.15 mm. According to at least one embodiment of the present invention, it is possible to provide a polymer sheet excelling in properties such as mechanical strength, heat tolerance, and transparency, particularly a polymer sheet having excellent properties such as mechanical strength, heat tolerance, and transparency in general-purpose plastics such as polypropylene.

Abstract: A modified polypropylene-based polymer obtained by graft modification of a propylene/?-olefin copolymer with a xylene-soluble portion of at least 40 mass % and no greater than 85 mass %, a xylene-soluble portion (XS) intrinsic viscosity (XSIV) of at least 2.5 dl/g, and an MFR value of no greater than 3.0 g/10 min at 230° C. under a load of 2.16 kg, using an unsaturated carboxylic acid or its derivative, and a flame retardant polyolefin-based resin composition having prescribed contents of a polyolefin-based resin component comprising 60-95 mass % of a polyolefin-based resin and 40-5 mass % of a modified polypropylene-based polymer, and an inorganic flame retardant component comprising an inorganic filler.

Abstract: A method for secondary-molding a polymer nano oriented crystal material in accordance with an embodiment of the present invention includes the steps of: heating the polymer nano oriented crystal material so that the polymer nano oriented crystal material changes into a mobile phase or a melt having a dense entanglement network structure; molding the polymer nano oriented crystal material which changed into the mobile phase or the melt including the dense entanglement network in the step; and cooling the polymer nano oriented crystal material, which has undergone the step, until the polymer nano oriented crystal material changes into an ordered phase.

Abstract: A process and apparatus for manufacturing a crystalline resin film or sheet. This manufacturing apparatus includes: an extruder that melts crystalline resin while supplying it; a gear pump that is provided on the downstream side of the extruder; a die which is provided on the downstream side of the gear pump, and which has a slit-shaped aperture; a cooling apparatus which cools film-shaped or sheet-shaped crystalline resin (A) discharged in a melted state from the die to a temperature which is not less than the crystallization temperature but not more than the melting point; and a pair of pinch rolls that press-roll between them the film-shaped or sheet-shaped crystalline resin (B) which has passed through the cooling apparatus (40), wherein the pair of guide rolls are positioned such that the thickness of the film-shaped or sheet-shaped crystalline resin (B) which has passed through the cooling apparatus is between 1.3 and 8.0 times the thickness of the film or sheet (C, D) after it has been press-rolled.

Abstract: A polymer sheet according to at least one embodiment of the present invention is a polymer sheet whose main component is oriented nanocrystals of a polymer, and which satisfies the following conditions (I), (II), and (III): (I) having a crystallinity of not less than 70%; (II) having a tensile strength at break of not less than 100 MPa and a tensile modulus of not less than 3 GPa; and (III) having an average thickness of not less than 0.15 mm. According to at least one embodiment of the present invention, it is possible to provide a polymer sheet excelling in properties such as mechanical strength, heat tolerance, and transparency, particularly a polymer sheet having excellent properties such as mechanical strength, heat tolerance, and transparency in general-purpose plastics such as polypropylene.

Abstract: A modified polypropylene-based polymer obtained by graft modification of a propylene/?-olefin copolymer with a xylene-soluble portion of at least 40 mass % and no greater than 85 mass %, a xylene-soluble portion (XS) intrinsic viscosity (XSIV) of at least 2.5 dl/g, and an MFR value of no greater than 3.0 g/10 min at 230° C. under a load of 2.16 kg, using an unsaturated carboxylic acid or its derivative, and a flame retardant polyolefin-based resin composition having prescribed contents of a polyolefin-based resin component comprising 60-95 mass % of a polyolefin-based resin and 40-5 mass % of a modified polypropylene-based polymer, and an inorganic flame retardant component comprising an inorganic filler.

Abstract: A solid cocatalyst for olefin polymerization in which an ion-containing compound comprising a cation expressed by [R4M]+, wherein the group R are each individually selected from the group consisting of hydrogen atom and a substituted or non-substituted hydrocarbon group having from 1 to 30 carbon atoms with the exception of an aryl group; two or more groups R may form a ring by bonding with one another; at least one of the groups R is a hydrocarbon group having from 1 to 30 carbon atoms with the exception of an aryl group; and M represents nitrogen or sulfur, and a non-coordinating anion expressed by [A] said ion-containing compound is chemically bonded to a fine particulate carrier is used.

Abstract: A catalyst is used which comprises a cocatalyst component wherein a non-coordinating ion-containing compound is chemically bonded to a fine particulate carrier, together with a metallocene compound and a specific hydrocarbon. There are provided an olefin polymerization catalyst which produces olefin polymers containing few solvent-soluble components without a wider molecular weight distribution, and which exhibits no significant reduction in activity even after storage, as well as olefin polymerization catalyst components and a method for their storage, and a process for production of propylene polymers using them.

Abstract: The present invention relates to interior parts of a car comprising a new propylene resin composition. The present resin composition has good molding abilities and a good balance of physical properties as well as a good appearance, lower gloss and scratch resistance. Specifically, the present invention relates to a molded article for interior parts of a car comprising a polypropylene resin composition comprising the following components; a crystalline homopolypropylene having MFR of 500 to 3,000 g/10 min.; a polypropylene consisting of a crystalline homopolypropylene and an ethylene-propylene copolymer rubber having 45 to 80% by mass of a ethylene content; a polypropylene consisting of a crystalline homopolypropylene and an ethylene-propylene copolymer rubber having 25% by mass or more to below 45% by mass of a ethylene content; and an ethylene-?-olefin copolymer rubber.

Abstract: The present invention relates to interior parts of a car comprising a new propylene resin composition. The present resin composition has good molding abilities and a good balance of physical properties as well as a good appearance, lower gloss and scratch resistance. Specifically, the present invention relates to a molded article for interior parts of a car comprising a polypropylene resin composition comprising the following components; a crystalline homopolypropylene having MFR of 500 to 3,000 g/10 min.; a polypropylene consisting of a crystalline homopolypropylene and an ethylene-propylene copolymer rubber having 45 to 80% by mass of a ethylene content; a polypropylene consisting of a crystalline homopolypropylene and an ethylene-propylene copolymer rubber having 25% by mass or more to below 45% by mass of a ethylene content; and an ethylene-&agr;-olefin copolymer rubber.