Abstract: Provided is a surface-treated carbon nanotube having few surface fractures, not reducing the molecular weight of the resin to be mixed and having excellent extrudability. In the surface-treated carbon nanotube, the thermal reduction amount at 600° C. in a nitrogen atmosphere is 0.2 to 40%, the surface oxygen concentration measured by X-ray photoelectron spectroscopy (XPS) is 1.5 to 40 atm % and the surface sulfur concentration is less than 0.1 atm %.

Abstract: Provided is a surface-treated carbon nanotube having few surface fractures, not reducing the molecular weight of the resin to be mixed and having excellent extrudability. In the surface-treated carbon nanotube, the thermal reduction amount at 600° C. in a nitrogen atmosphere is 0.2 to 40%, the surface oxygen concentration measured by X-ray photoelectron spectroscopy (XPS) is 1.5 to 40 atm % and the surface sulfur concentration is less than 0.1 atm %.

Abstract: A resin composition includes 1 to 20% by mass of (A) a copolymer containing a conjugated diene unit and a vinyl aromatic compound unit, 1 to 20% by mass of (B) a softening agent for rubber, and 70 to 95% by mass of (C) metal hydroxide, in which (A) the copolymer containing the conjugated diene unit and the vinyl aromatic compound unit includes a plurality of polymer blocks of the vinyl aromatic compound unit.

Abstract: Disclosed is a resin composition comprising an aromatic polyamide having a terminal amino group concentration of 5 to 45 ?moles/g inclusive, polyphenylene ether, a compatibilizing agent for the polyamide and the polyphenylene ether, and a crystal nucleating agent. The composition is extremely useful in an automotive body panel (e.g., an automotive fender), an SMT-compliant component or the like.

Abstract: The present invention relates to a method for producing a conductive masterbatch containing a polyamide resin and a carbonaceous filler. The present invention provides a method for producing a conductive masterbatch which can suppress an increase in resin temperature during extrusion, formation of die drips, and strand breakage and can also significantly increase the output of extruding. The method is achieved by the steps of feeding the carbonaceous filler to a molten first polyamide to melt-knead them together and then feeding a second polyamide to the resulting melt-kneaded product to further melt-knead the second polyamide, the carbonaceous filler, and the first polyamide.

Abstract: A shaped resin article comprising a polyamide (A) (comprising at least two different polyamide components), a polyphenylene ether (B) and a partially hydrogenated block copolymer (C) (obtained by partially hydrogenating a block copolymer comprising an aromatic vinyl polymer block and a conjugated diene polymer block) including a block copolymer (C-1) having a number average molecular weight of from 200,000 to 300,000, wherein (A) is present as a continuous phase in which (B) is dispersed to form a dispersed phase, and (C) is present in the continuous phase of (A) and/or the dispersed phase of (B), wherein the surface area of the polyamide (A) exposed on the overall surface of the shaped resin article is at least 80%, based on the surface area of the shaped resin article.

Abstract: A resin composition includes 1 to 20% by mass of (A) a copolymer containing a conjugated diene unit and a vinyl aromatic compound unit, 1 to 20% by mass of (B) a softening agent for rubber, and 70 to 95% by mass of (C) metal hydroxide, in which (A) the copolymer containing the conjugated diene unit and the vinyl aromatic compound unit includes a plurality of polymer blocks of the vinyl aromatic compound unit.

Abstract: A thermoplastic resin composition comprising: (A) 30 to 80 parts by mass of a polyamide; (B) 20 to 70 parts by mass of a polyphenylene ether; (C) 0 to 40 parts by mass, based on 100 parts by mass of the total amount of the polyamide (A) and the polyphenylene ether (B), of a rubbery polymer; and (D) 10 to 50 parts by mass, based on 100 parts by mass of the total amount of the polyamide (A) and the polyphenylene ether (B), of a platy inorganic filler having an average particle size of 9 to 20 ?m, and having a particle size ratio (d75%/d25%) of the particle size (d75%) at 75% counted from smaller particle size to the particle size (d25%) at 25% of 1.0 or more and 2.5 or less.

Abstract: The present invention relates to a method for producing a conductive masterbatch containing a polyamide resin and a carbonaceous filler. The present invention provides a method for producing a conductive masterbatch which can suppress an increase in resin temperature during extrusion, formation of die drips, and strand breakage and can also significantly increase the output of extruding. The method is achieved by the steps of feeding the carbonaceous filler to a molten first polyamide to melt-knead them together and then feeding a second polyamide to the resulting melt-kneaded product to further melt-knead the second polyamide, the carbonaceous filler, and the first polyamide.

Abstract: Disclosed is a resin composition comprising an aromatic polyamide having a terminal amino group concentration of 5 to 45 ?moles/g inclusive, polyphenylene ether, a compatibilizing agent for the polyamide and the polyphenylene ether, and a crystal nucleating agent. The composition is extremely useful in an automotive body panel (e.g., an automotive fender), an SMT-compliant component or the like.

Abstract: A conductive resin composition produced by melt-kneading a mixture comprising a polyamide (A), a polyphenylene ether (B) (non-terminal-modified polyphenylene ether and/or terminal-modified polyphenylene ether), a rubbery polymer (C), a conductive carbonaceous material (D) (carbon black and/or carbon fibril), and a low molecular weight modifier compound (E) (compatibility agent), wherein the mixture has the following characteristics: (1) the amount of (D) is 0.2 to 3% by weight, based on the total weight of (A) to (E), (2) the amount of (E) is more than 0.01% by weight and less than 0.20% by weight, based on the total weight of (A) to (E), and (3) the amount (a) of a volatile substance contained in (B) satisfies the following formula: 0?a??7.3×E+1.83, wherein E is the % by weight of (E), based on the total weight of (A) to (E), the amount (a) being expressed in terms of a weight decrease (% by weight) of (B) as measured by subjecting (B) to vacuum drying in vacuo at 180 ° C. for 1 hour.

Abstract: The present invention can provide a resin composition characterized by comprising (A) a polyamide, (B) a polyphenylene ether, (C) an elastomer, and (D) a phosphorus compound selected from among phosphoric acids, phosphorous acids, hypophosphorous acids, metal phosphates, metal phosphites, metal hypophosphites, and phosphoric esters, wherein the resin composition contains 1 to 35 ppm of phosphorus element based on 100% by mass of the sum of the components (A) to (D), and can provide a molding composed of the resin composition. The resin composition can be used in a wide range of fields such as electrical/electronic parts, OA parts, vehicle parts and mechanical parts. In particular, the resin composition can be suitably used for exterior parts of automobiles or the like where large moldings are required.

Abstract: Disclosed is a resin composition comprising 10 to 90 parts by weight of a mixture of two or more aromatic polyamides having different intrinsic viscosities [?] and 90 to 10 parts by weight of a polyphenylene ether, both relative to 100 parts by weight of the sum total of the aromatic polyamides and the polyphenylene ether. The resin composition is extremely useful for an automotive exterior panel (e.g., a car fender), an SMT-compatible part, a lamp-related part, and the like.

Abstract: A thermoplastic resin composition comprising: (A) 30 to 80 parts by mass of a polyamide; (B) 20 to 70 parts by mass of a polyphenylene ether; (C) 0 to 40 parts by mass, based on 100 parts by mass of the total amount of the polyamide (A) and the polyphenylene ether (B), of a rubbery polymer; and (D) 10 to 50 parts by mass, based on 100 parts by mass of the total amount of the polyamide (A) and the polyphenylene ether (B), of a platy inorganic filler having an average particle size of 9 to 20 ?m, and having a particle size ratio (d75%/d25%) of the particle size (d25%) at 25% counted from smaller particle size to the particle size (d75%) at 75% of 1.0 or more and 2.5 or less.

Abstract: Disclosed is a conductive masterbatch comprising a polyamide and conductive carbon black, the conductive carbon black being present in the form of at least one agglomerated particle having a major axis of 20 to 100 ?m, wherein the number of the agglomerated particle(s) is 1 to 100 as observed under an optical microscope with respect to a contiguous area of 3 mm2.

Abstract: A conductive resin composition produced by melt-kneading a mixture comprising a polyamide (A), a polyphenylene ether (B) (non-terminal-modified polyphenylene ether and/or terminal-modified polyphenylene ether), a rubbery polymer (C), a conductive carbonaceous material (D) (carbon black and/or carbon fibril), and a low molecular weight modifier compound (E) (compatibility agent), wherein the mixture has the following characteristics: (1) the amount of (D) is 0.2 to 3% by weight, based on the total weight of (A) to (E), (2) the amount of (E) is more than 0.01% by weight and less than 0.20% by weight, based on the total weight of (A) to (E), and (3) the amount (a) of a volatile substance contained in (B) satisfies the following formula: 0?a??7.3×E+1.83, wherein E is the % by weight of (E), based on the total weight of (A) to (E), the amount (a) being expressed in terms of a weight decrease (% by weight) of (B) as measured by subjecting (B) to vacuum drying in vacuo at 180 ° C. for 1 hour.

Abstract: A shaped resin article comprising a polyamide (A) (comprising at least two different polyamide components), a polyphenylene ether (B) and a partially hydrogenated block copolymer (C) (obtained by partially hydrogenating a block copolymer comprising an aromatic vinyl polymer block and a conjugated diene polymer block) including a block copolymer (C-1) having a number average molecular weight of from 200,000 to 300,000, wherein (A) is present as a continuous phase in which (B) is dispersed to form a dispersed phase, and (C) is present in the continuous phase of (A) and/or the dispersed phase of (B), wherein the surface area of the polyamide (A) exposed on the overall surface of the shaped resin article is at least 80%, based on the surface area of the shaped resin article.

Abstract: The present invention provides a thermoplastic resin composition characterized by (1) having an excellent appearance even when it is extruded into a molded piece at a high output, (2) retaining its impact strength even after heat exposure, and (3) having less foreign matter generation at the time of production. According to the present invention, in a composition comprising a polyamide, a polyphenylene ether and a block copolymer, a mixture of a block copolymer having a number average molecular weight of less than 120,000 and a block copolymer having a number average molecular weight of 120,000 or more is used as the block copolymer.

Abstract: The present invention provides a thermoplastic resin composition remarkably improved in toughness, particularly, tensile elongation and multiaxial impact strength, while maintaining the flowability and heat resistance of polyamide/polyphenylene ether alloys.

Abstract: Disclosed is a conductive masterbatch comprising a polyamide and conductive carbon black, the conductive carbon black being present in the form of at least one agglomerated particle having a major axis of 20 to 100 ?m, wherein the number of the agglomerated particle(s) is 1 to 100 as observed under an optical microscope with respect to a contiguous area of 3 mm2.