Abstract: An olefin resin having requirements (I) to (VI) is provided: (I) a grafted olefin polymer containing a main chain with an ethylene/?-olefin copolymer and a side chain with a propylene polymer; (II) the ratio P wt % of propylene polymer is from 5 to 60 wt %; (III) when the ratio of the amount of a component(s) having a peak temperature of a differential elution curve as measured by CFC using o-dichlorobenzene of less that 65° C., to the amount of (?) taken as E wt %, the value a represented by an equation (Eq-1), is 1.4 or more; (IV) the melting point (Tm) is 120 to 165° C. and the glass transition temperature (Tg) is ?80 to ?30° C., as measured by DSC; (V) the hot xylene-insoluble content is less than 3 wt %; and, (VI) the limiting viscosity as measured in decalin at 135° C. is 0.5 to 5.0 dl/g.

Abstract: An object of the present invention is to provide a propylene-based resin composition capable of providing a molded article having an excellent balance between rigidity and impact resistance. The object can be achieved by a propylene-based resin composition including an olefin-based resin characterized by including a grafted ethylene-based copolymer having an ethylene polymer as a side chain.

Abstract: The present invention provides an olefin resin (?) satisfying the following requirements (I) to (VI), and a propylene resin composition including the same. (I) (?) includes a grafted olefin polymer [R1] containing a main chain composed of an ethylene/?-olefin copolymer and a side chain composed of a propylene polymer. (II) The ratio P wt % of the amount of the propylene polymer contained in (?) is from 5 to 60 wt %. (III) When the ratio of the amount of a component(s) having a peak temperature of a differential elution curve as measured by cross-fractionation chromatography (CFC) using o-dichlorobenzene as a solvent of less than 65° C., to the amount of (?) is taken as E wt %, the value a represented by the following equation (Eq-1), in relation to the ratio E and the ratio P, is 1.4 or more. (IV) The melting point (Tm) and the glass transition temperature (Tg), as measured by differential scanning calorimetry (DSC), are from 120 to 165° C. and from ?80 to ?30° C., respectively.

Abstract: An object of the present invention is to provide a propylene-based resin composition capable of providing a molded article having an excellent balance between rigidity and impact resistance. The object can be achieved by a propylene-based resin composition including an olefin-based resin characterized by including a grafted ethylene-based copolymer having an ethylene polymer as a side chain.

Abstract: [Object] To provide a polypropylene resin composition for use in the formation of a microporous membrane having excellent heat resistance and strength. [Solution] A polypropylene resin composition for use in the formation of a microporous membrane according to the present invention comprises as an essential component an ultra-high-molecular-weight propylene homopolymer (A) that satisfies the following requirements (1) to (4): (1) the intrinsic viscosity [?] is 7 dl/g or more and less than 25 dl/g; (2) the mesopentad fraction ranges from 90.0% to 99.5%; (3) the melting point ranges from 153° C. to 167° C.; and (4) in an elution temperature-elution volume curve measured by temperature-rising elution fractionation (TREF), the maximum peak has a peak top temperature in the range of 116° C. to 125° C. and a half-width of 7.0° C. or less.

Abstract: [Object] To provide a polypropylene resin composition for use in the formation of a microporous membrane having excellent heat resistance and low thermal shrinkage ratio. [Solution] A polypropylene resin composition for use in the formation of a microporous membrane according to the present invention comprises as an essential component a propylene homopolymer (A) that satisfies the following requirements (1) to (4) and (7): (1) the intrinsic viscosity [?] is 1 dl/g or more and less than 7 dl/g; (2) the mesopentad fraction ranges from 94.0% to 99.5%; (3) the integral elution volume during heating to 100° C. is 10% or less; (4) the melting point ranges from 153° C. to 167° C.; and (7) in an elution temperature-elution volume curve, the maximum peak has a peak top temperature in the range of 105° C. to 130° C. and a half-width of 7.0° C. or less.

Abstract: Extruded propylene-based resin foam according to the present invention is formed by extrusion-foaming a propylene-based resin, and the extruded propylene-based resin foam has a closed cell content of less than 40% and an expansion ratio of 10 or more. Since the extruded propylene-based resin foam has an open-cell structure in which a cell-broken state is formed at a desired level and has a high expansion ratio, each cell in the foam has a sound absorption performance, such that the extruded foam is excellent in sound absorption performance.

Abstract: [Object] To provide a polypropylene resin composition for use in the formation of a microporous membrane having excellent heat resistance and low thermal shrinkage ratio. [Solution] A polypropylene resin composition for use in the formation of a microporous membrane according to the present invention comprises as an essential component a propylene homopolymer (A) that satisfies the following requirements (1) to (4) and (7): (1) the intrinsic viscosity [?] is 1 dl/g or more and less than 7 dl/g; (2) the mesopentad fraction ranges from 94.0% to 99.5%; (3) the integral elution volume during heating to 100° C. is 10% or less; (4) the melting point ranges from 153° C. to 167° C.; and (7) in an elution temperature-elution volume curve, the maximum peak has a peak top temperature in the range of 105° C. to 130° C. and a half-width of 7.0° C. or less.

Abstract: [Object] To provide a polypropylene resin composition for use in the formation of a microporous membrane having excellent heat resistance and strength. [Solution] A polypropylene resin composition for use in the formation of a microporous membrane according to the present invention comprises as an essential component an ultra-high-molecular-weight propylene homopolymer (A) that satisfies the following requirements (1) to (4): (1) the intrinsic viscosity [?] is 7 dl/g or more and less than 25 dl/g; (2) the mesopentad fraction ranges from 90.0% to 99.5%; (3) the melting point ranges from 153° C. to 167° C.; and (4) in an elution temperature-elution volume curve measured by temperature-rising elution fractionation (TREF), the maximum peak has a peak top temperature in the range of 116° C. to 125° C. and a half-width of 7.0° C. or less.

Abstract: The extruded propylene-based resin composite foam (1) according to the present invention is provided by extrusion-foaming a molding material containing a propylene-based resin. The propylene-based resin forming the extruded foam has an olefin-based polymer whose loss tangent (tan ?) is 0.04 to 100 at a temperature of 298 K and a frequency of 10 Hz. The molding material includes a fibrous filler in an amount of more than 0 mass % and 60 mass % or less of the entirety of the molding material. The extruded composite foam (1) includes: first extruded foam (2) whose closed cell content is 40 percent or more and whose expansion ratio is 10 or more; and second extruded foam (3) whose closed cell content is less than 40 percent and whose expansion ratio is 10 or more.

Abstract: An object of the present invention is to provide an extruded propylene-based resin foam in which a average diameter of cells therein can be reduced while a high expansion ratio remains high, thereby providing an excellent insulation efficiency. The extruded propylene-based resin foam according to the present invention is extruded propylene-based resin foam that is formed by extrusion-foaming a propylene-based resin, and the extruded propylene-based resin foam has the expansion ratio of 10 or more and the average cell diameter of less than 400 ?m. With this configuration, the extruded foam can have a plurality of air bubble walls therein. Thus, the extruded propylene-based resin foam can efficiently block external radiant heat, thereby realizing excellent insulation efficiency.

Abstract: A multistage propylene-based polymer including the following components (A) and (B): (A) 5 to 20 wt % of a propylene homopolymer component or a copolymer component of propylene and an ?-olefin with 2 to 8 carbon atoms having an intrinsic viscosity [?] of more than 10 dL/g in tetralin at 135° C.; and (B) 80 to 95 wt % of a propylene homopolymer component or a copolymer component of propylene and an ?-olefin with 2 to 8 carbon atoms having an intrinsic viscosity [?] of 0.5 to 3.0 dL/g in tetralin at 135° C.

Abstract: The extruded propylene-based resin foam according to the present invention is extruded propylene-based resin foam that is formed by extrusion-foaming a propylene-based resin, and the extruded propylene-based resin foam has the expansion ratio of 10 or more and the average cell diameter of less than 400 ?m. In addition, the extruded foam contains a 60 or less wt % fibrous filler in relation to the whole molding material. With this configuration, the extruded foam can have a plurality of foam cell walls therein. Thus, the extruded foam can efficiently block external radiant heat, thereby realizing excellent insulation efficiency. Furthermore, because the fibrous filler is oriented along the thickness direction, even when the extruded foam is slightly strained in the thickness direction, a high stress arises, thereby improving energy-absorbing capability.

Abstract: The extruded propylene-based resin composite foam (1) according to the present invention is provided by extrusion-foaming a molding material containing a propylene-based resin. The propylene-based resin forming the extruded foam has an olefin-based polymer whose loss tangent (tan ?) is 0.04 to 100 at a temperature of 298 K and a frequency of 10 Hz. The molding material includes a fibrous filler in an amount of more than 0 mass % and 60 mass % or less of the entirety of the molding material. The extruded composite foam (1) includes: first extruded foam (2) whose closed cell content is 40 percent or more and whose expansion ratio is 10 or more; and second extruded foam (3) whose closed cell content is less than 40 percent and whose expansion ratio is 10 or more.

Abstract: Extruded propylene-based resin foam according to the present invention is formed by extrusion-foaming a propylene-based resin, and the extruded propylene-based resin foam has a closed cell content of less than 40% and an expansion ratio of 10 or more. Since the extruded propylene-based resin foam has an open-cell structure in which a cell-broken state is formed at a desired level and has a high expansion ratio, each cell in the foam has a sound absorption performance, such that the extruded foam is excellent in sound absorption performance.

Abstract: An object of the present invention is to provide an extruded propylene-based resin foam in which a average diameter of cells therein can be reduced while a high expansion ratio remains high, thereby providing an excellent insulation efficiency. The extruded propylene-based resin foam according to the present invention is extruded propylene-based resin foam that is formed by extrusion-foaming a propylene-based resin, and the extruded propylene-based resin foam has the expansion ratio of 10 or more and the average cell diameter of less than 400 ?m. With this configuration, the extruded foam can have a plurality of air bubble walls therein. Thus, the extruded propylene-based resin foam can efficiently block external radiant heat, thereby realizing excellent insulation efficiency.

Abstract: A multistage propylene-based polymer including the following components (A) and (B): (A) 5 to 20 wt % of a propylene homopolymer component or a copolymer component of propylene and an ?-olefin with 2 to 8 carbon atoms having an intrinsic viscosity [?] of more than 10 dL/g in tetralin at 135° C.; and (B) 80 to 95 wt % of a propylene homopolymer component or a copolymer component of propylene and an ?-olefin with 2 to 8 carbon atoms having an intrinsic viscosity [?] of 0.5 to 3.0 dL/g in tetralin at 135° C.

Abstract: Provided are a propylenic random copolymer of propylene and ethylene satisfying the following (1) to (5), a composition comprising the copolymer, a film and a stretched film of the copolymer or its composition, and a laminate film and a stretched laminate film comprising at least one layer of the copolymer or its composition. (1) The ethylene unit content (x, wt. %) of the copolymer is from 0.2 to 10 wt. %. (2) The copolymer has a melt index (MI, g/10 min) of from 0.1 to 4 g/10 min. (3) The relation between the boiling diethyl ether extraction (E, wt. %) of the copolymer and x satisfies the following (I) or (II); E≦0.253x+1.1 (0.2≦x<6)  (I) E≦2.6 (6≦x≦10)  (II) (4) The relation between the melting point (Tm, ° C.

Abstract: Disclosed are a binary random copolymer of propylene and ethylene, and a film to be formed by sheeting the copolymer. The film has good heat-sealability, high stiffness, good anti-blocking and slipping properties, and high transparency. As having excellent heat-sealability at low-temperature, the copolymer and its film are favorably used as sealant layers of laminate films.

Abstract: Provided are a propylenic random copolymer of propylene and ethylene satisfying the following (1) to (5), a composition comprising the copolymer, a film and a stretched film of the copolymer or its composition, and a laminate film and a stretched laminate film comprising at least one layer of the copolymer or its composition.