Abstract: There is provided a method for producing a resin composition which is good in dispersability of a biodegradable resin. This method has a first kneading step of kneading (A) a biodegradable resin and (B) a compound that is reactive with the biodegradable resin (A) to produce a resin composition precursor, and a second kneading step of kneading the resin composition precursor and a polyolefin resin (C).

Abstract: A propylene-based resin molded article satisfying the following requirements (1) through (4): Requirement (1) Lc/La?1.50 Requirement (2) Lc?10.0 Requirement (3) F1?0.07 Requirement (4) F2?0.06 wherein in Requirements (1) through (4), La denotes the distance (unit: nm) between crystalline lamellae calculated from the long-period distance calculated from a small-angle X-ray scattering profile and the degree of crystallization calculated from the amount of heat of fusion measured by differential scanning calorimetry, Lc denotes the thickness (unit: nm) of a crystalline lamella calculated from the distance between crystalline lamellae and the long-period distance, F1 denotes the degree of orientation calculated from the infrared dichroic ratio measured at a wave number of 997 cm?1, and F2 denotes the degree of orientation calculated from the infrared dichroic ratio measured at a wave number of 973 cm?1.

Abstract: This invention provides a resin composition comprising a polyolefin-based polymer and an aliphatic polyester-based polymer, which has an excellent balance of impact resistance and rigidity and excellent properties, such as processability. The resin composition comprises a polyolefin-based polymer (A), an aliphatic polyester-based polymer (B), an elastomer (C), which has a melt flow rate (MFR), measured at 190° C. under a load of 21N, of 0.5 to 3.0 g/10 minutes, and an epoxy group-containing polyolefin-based polymer (D).

Abstract: Disclosed are processes for producing polypropylene resin compositions including two or three sorts of propylene-based polymeric materials, the processes including a first step of melt-kneading at least a propylene-?-olefin block copolymer containing a polymer portion composed mainly of propylene and a propylene-?-olefin copolymer portion having a relatively high intrinsic viscosity and a second step of melt-kneading the product of the first step with a propylene-ethylene block copolymer containing a polymer portion composed mainly of propylene and a propylene-ethylene copolymer portion having a relatively low intrinsic viscosity or a polymer portion composed mainly of propylene having a relatively low intrinsic viscosity. In the composition produced by these processes, no or substantially no fish eyes develop.

Abstract: Disclosed are processes for producing polypropylene resin compositions including two or three sorts of propylene-based polymeric materials, the processes including a first step of melt-kneading at least a propylene-?-olefin block copolymer containing a polymer portion composed mainly of propylene and a propylene-?-olefin copolymer portion having a relatively high intrinsic viscosity and a second step of melt-kneading the product of the first step with a propylene-ethylene block copolymer containing a polymer portion composed mainly of propylene and a propylene-ethylene copolymer portion having a relatively low intrinsic viscosity or a polymer portion composed mainly of propylene having a relatively low intrinsic viscosity. In the composition produced by these processes, no or substantially no fish eyes develop.

Abstract: A propylene-based resin molded article satisfying the following requirements (1) through (4): Requirement (1) Lc/La ?1.50 Requirement (2) Lc?10.0 Requirement (3) F1?0.07 Requirement (4) F2?0.06 wherein in Requirements (1) through (4), La denotes the distance (unit: nm) between crystalline lamellae calculated from the long-period distance calculated from a small-angle X-ray scattering profile and the degree of crystallization calculated from the amount of heat of fusion measured by differential scanning calorimetry, Le denotes the thickness (unit: nm) of a crystalline lamella calculated from the distance between crystalline lamellae and the long-period distance, Fl denotes the degree of orientation calculated from the infrared dichroic ratio measured at a wave number of 997 cm?1, and F2 denotes the degree of orientation calculated from the infrared dichroic ratio measured at a wave number of 973 cm?1.

Abstract: This invention provides a molded article that is excellent in planar impact resistance and shape stability by the use of a composition comprising a polyolefin-based polymer and an aliphatic polyester-based polymer and that is less likely to experience layer separation at the time of molding and a method for producing the same. Such a molded article comprises a resin composition comprising a polyolefin-based polymer (A), an aliphatic polyester-based polymer (B), an ethylene-? olefin-based elastomer (C), and an epoxy group-containing polyolefin-based polymer (D), and the aliphatic polyester-based polymer (B) has an aspect ratio A1 of 1.0 to 3.6 at a flow length of 0.1 L and an aspect ratio A2 of 1.0 to 3.8 at a flow length of 0.9 L when the maximum flow length is designated as L.

Abstract: This invention provides a resin composition comprising a polyolefin-based polymer and an aliphatic polyester-based polymer, which has an excellent balance of impact resistance and rigidity and excellent properties, such as processability. The resin composition comprises a polyolefin-based polymer (A), an aliphatic polyester-based polymer (B), an elastomer (C), which has a melt flow rate (MFR), measured at 190° C. under a load of 21N, of 0.5 to 3.0 g/10 minutes, and an epoxy group-containing polyolefin-based polymer (D).

Abstract: There is provided a method for producing a resin composition which is good in dispersability of a biodegradable resin. This method has a first kneading step of kneading (A) a biodegradable resin and (B) a compound that is reactive with the biodegradable resin (A) to produce a resin composition precursor, and a second kneading step of kneading the resin composition precursor and a polyolefin resin (C).

Abstract: Disclosed is a method for producing a thermoplastic resin composition, the method including a first step of melt-kneading 100 parts by weight component (A) and from 15 to 200 parts by weight of component (B) to form a melt-kneaded material, and a second step of melt-kneading from 35 to 2300 parts by weight of additional component (B) with the melt-kneaded material formed in the first step, wherein component (A) is an elastomer having a melt viscosity, as measured at a temperature of 230° C. and a shear rate of 121 sec?1, of 1500 Pa·s or more and the component (B) is a polyolefin resin.

Abstract: Disclosed are processes for producing polypropylene resin compositions including two or three sorts of propylene-based polymeric materials, the processes including a first step of melt-kneading at least a propylene-?-olefin block copolymer containing a polymer portion composed mainly of propylene and a propylene-?-olefin copolymer portion having a relatively high intrinsic viscosity and a second step of melt-kneading the product of the first step with a propylene-ethylene block copolymer containing a polymer portion composed mainly of propylene and a propylene-ethylene copolymer portion having a relatively low intrinsic viscosity or a polymer portion composed mainly of propylene having a relatively low intrinsic viscosity. In the composition produced by these processes, no or substantially no fish eyes develop.

Abstract: Disclosed is a method for producing a thermoplastic resin composition, the method including a first step of melt-kneading 100 parts by weight component (A) and from 15 to 200 parts by weight of component (B) to form a melt-kneaded material, and a second step of melt-kneading from 35 to 2300 parts by weight of additional component (B) with the melt-kneaded material formed in the first step, wherein component (A) is an elastomer having a melt viscosity, as measured at a temperature of 230° C. and a shear rate of 121 sec?1, of 1500 Pa·s or more and the component (B) is a polyolefin resin.

Abstract: Disclosed are processes for producing polypropylene resin compositions including two or three sorts of propylene-based polymeric materials, the processes including a first step of melt-kneading at least a propylene-?-olefin block copolymer containing a polymer portion composed mainly of propylene and a propylene-?-olefin copolymer portion having a relatively high intrinsic viscosity and a second step of melt-kneading the product of the first step with a propylene-ethylene block copolymer containing a polymer portion composed mainly of propylene and a propylene-ethylene copolymer portion having a relatively low intrinsic viscosity or a polymer portion composed mainly of propylene having a relatively low intrinsic viscosity. In the composition produced by these processes, no or substantially no fish eyes develop.

Abstract: There is provided a polyphenylene ether resin composition, comprising: a component (A) containing a polyphenylene ether resin; a component (B) containing a phosphate compound represented by the following formula (I); and a component (C) containing a condensed phosphate compound represented by the following formula (II), wherein R1, R2 and R3 are independently of one another an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms or a hydroxyl group; R4, R5, R6 and R7 are independently of one another a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 6 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms or a hydroxyl group, provided that a case of R4=R5=R6=R=H is excluded; n is an integer of not less than 1; Z is an organic group having 1 to 10 carbon

Abstract: There are provided: (I) a thermoplastic resin (X-1) obtained by a process comprising the step of reacting: (1) a polyphenylene ether resin (A) with (2) a specific polyorganosiloxane (B), (II) a thermoplastic resin (X-2) obtained by a process comprising the step of reacting: (1) a polyphenylene ether resin (A), with (2) a specific polyorganosiloxane (B) and (3) a coupling agent (C), (III) a process for producing the thermoplastic resin (X-1), which comprises the step of reacting: (1) a polyphenylene ether resin (A) with (2) a specific polyorganosiloxane (B), (IV) a process for producing the thermoplastic resin (X-2), which comprises the step of reacting: (1) a polyphenylene ether resin (A) with (2) a specific polyorganosiloxane (B) and (3) a coupling agent (C), and (V) a thermoplastic resin composition (Z-1) comprising: (i) the above-mentioned thermoplastic resin (X-1) or (X-2) and (ii) a thermoplastic resin (D).

Abstract: There is provided a polyphenylene ether resin composition comprising:

Abstract: There is provided a polyphenylene ether resin composition comprising: (i) a polyphenylene ether resin; (ii) a phosphoric ester; and (iii) a dispersed substance having an aspect ratio of not less than about 2, and which composition has superior heat resistance and flame resistance without use of any halogen-containing flame retardant or any halogen-containing anti-dripping agent as an essential or mandatory component.

Abstract: There are provided:

Abstract: There is provided a polyphenylene ether resin composition comprising: a component (A) containing a polyphenylene ether resin; and a component (B) containing an organopolysiloxane comprising respective structure units represented by the following formulas (I), (II) and (III) R1R2SiO1.0  (I) R3SiO1.5  (II) R4R5R6SiO0.5  (III) wherein R1, R2 and R3 are independently of one another an alkyl group having 1 to 3 carbon atoms or an aryl group having 6 to 10 carbon atoms, and R4, R5 and R6 are independently of one another an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or a hydroxyl group; and wherein: (i) the component (B) is present in an amount of from about 0.5 to 100 parts by weight based on 100 parts by weight of the component (A); and (ii) the component (A) forms a continuous phase, and the component (B) forms a dispersed phase containing dispersed particles.

Abstract: A thermoplastic elastomer composition containing 100 wt. parts, in total, of an ethylene-.alpha.-olefin copolymer rubber and a polyolefin resin, and 0.1 to 150 wt. parts of at least one hydrogenated diene polymer having a hydrogenation degree of at least 70% selected from the group consisting of hydrogenated conjugated diene polymers and hydrogenated products of random copolymers comprising conjugated dienes and aromatic vinyl compounds in which the content of the aromatic vinyl compound units is 25 wt. % or less, in which the composition has a complex dynamic viscosity .eta.*(1) of 1.5.times.10.sup.5 poise or less, and a Newtonian viscosity index n of 0.67 or less. This composition provides molded articles which are not whitened on bending, and has good flexibility.