Abstract: A polyester resin composition is obtained by compounding at least: (A) 100 parts by mass of a polybutylene terephthalate resin, (B) 15 to 100 parts by mass of an amorphous resin and (C) 0.01 to 5 parts by mass of an epoxy resin with a special structure, and the melting point of the polyester resin composition is greater than 210° C. but less than 221° C. The polyester resin composition and the molded product thereof have excellent laser transmittance and can be used for various electrical mounting components for automobiles, connectors, switch components, relay components.

Abstract: A composition is composed mainly of: a component (I) (which is at least one selected from polyether ketone, polyether ether ketone, and polyether ketone ketone); a component (II) (which is polyphenylene sulfide); and, additionally if necessary, a component (III) (which is at least one selected from polyether imide, polyimide, polyamide imide, and polysulfone resins) and (IV) an inorganic filler. The composition is obtained using a conventional melt-kneading machine, for example, a single screw or twin screw extruder, Banbury mixer, or kneader in accordance with the melt-kneading method corresponding to the kneading machine. The resin composition for metal bonding has excellent metal bonding properties, and is applicable for use in automobile parts that require the composition to be bonded with metal and in electronic products such as laptop computers and mobile phones.

Abstract: A polyester resin composition having excellent hydrolysis resistance and excellent transparency and a method of producing the same are provided. There is provided a polyester resin composition comprising a polyester resin that is obtained from a dicarboxylic acid or an ester-forming derivative thereof and a diol as main raw material; and a copper-containing compound and a chelate ligand compound having a nitrogen-containing heterocyclic structure or a tertiary amine structure that are mixed with the polyester resin.

Abstract: A polyester resin composition having excellent hydrolysis resistance and excellent transparency and a method of producing the same are provided. There is provided a polyester resin composition comprising a polyester resin that is obtained from a dicarboxylic acid or an ester-forming derivative thereof and a diol as main raw material; and a copper-containing compound and a chelate ligand compound having a nitrogen-containing heterocyclic structure or a tertiary amine structure that are mixed with the polyester resin.

Abstract: An object is to provide a polyester resin having excellent hydrolysis resistance and good color tone and a method of producing the same. There is provided a polyester resin composition comprising a polyester resin that is prepared from a dicarboxylic acid or a dicarboxylic acid dialkyl ester and a diol as main raw material and mixed with: a copper halide; and at least one additive selected from the group consisting of compounds expressed by a formula (i) and compounds expressed by a formula (ii): MXn . . . (i) (where M denotes an alkali metal or an alkaline earth metal, X denotes at least one element selected from bromine, iodine and chlorine, and n=1 or 2); and (RCOO)nM . . . (ii) (where R denotes hydrogen or an alkyl group containing 1 to 30 carbon atoms, M denotes an alkali metal or an alkaline earth metal, and n=1 or 2).

Abstract: There is provided a production method of a crystalline polyamide resin by thermal polycondensation of a mixture including at least a diamine component, a dicarboxylic acid component and water as a starting material, wherein the diamine component includes (A) pentamethylene diamine at a ratio that is equal to or greater than 10 mol % and less than 80 mol % relative to a gross amount of the diamine component; and the dicarboxylic acid component includes (B) at least one selected from the group consisting of an aromatic dicarboxylic acid, an alicyclic dicarboxylic acid and dialkyl ester derivatives thereof at a ratio that is equal to or greater than 76 mol % and equal to or less than 100 mol % relative to a gross amount of the dicarboxylic acid component.

Abstract: A polyester resin composition having excellent hydrolysis resistance and excellent transparency and a method of producing the same are provided. There is provided a polyester resin composition comprising a polyester resin that is obtained from a dicarboxylic acid or an ester-forming derivative thereof and a diol as main raw material; and a copper-containing compound and a nitrogen-containing compound having a nitrogen-containing heterocyclic structure or a tertiary amine structure that are mixed with the polyester resin.

Abstract: The present invention provides a terminal modified polyamide resin having a relative viscosity (?r), as measured at 25° C. in a 98% sulfuric acid solution at a resin concentration of 0.01 g/ml, of 2.1 to 10, the resin comprising 0.05 to 4.5% by mass of a terminal structure represented by general formula (I): —X—(R1—O)n—R2??(I) wherein n ranges from 2 to 100; R1 represents a hydrocarbon group of 2 to 10 carbon atoms; R2 represents a hydrocarbon group of 1 to 30 carbon atoms; —X— represents —NH— or —N(CH3)—; and n R1s in the general formula (I) may be the same or different.

Abstract: A terminal modified polyethylene terephthalate resin has an intrinsic viscosity of 0.5 to 1.8 dl/g, a melting point of 245° C. to 270° C., and a melt viscosity ?(Pa·s) at 300° C. and satisfies inequality (A): ??4×e(0.000085×Mw) (A) wherein Mw represents a weight average molecular weight relative to a molecular weight of standard polymethyl methacrylate, as determined by gel permeation chromatography using hexafluoroisopropanol (with 0.

Abstract: An object is to provide a polyester resin having excellent hydrolysis resistance and good color tone and a method of producing the same. There is provided a polyester resin composition comprising a polyester resin that is prepared from a dicarboxylic acid or a dicarboxylic acid dialkyl ester and a diol as main raw material and mixed with: a copper halide; and at least one additive selected from the group consisting of compounds expressed by a formula (i) and compounds expressed by a formula (ii): MXn . . . (i) (where M denotes an alkali metal or an alkaline earth metal, X denotes at least one element selected from bromine, iodine and chlorine, and n=1 or 2); and (RCOO)nM . . . (ii) (where R denotes hydrogen or an alkyl group containing 1 to 30 carbon atoms, M denotes an alkali metal or an alkaline earth metal, and n=1 or 2).

Abstract: There is provided a production method of a crystalline polyamide resin by thermal polycondensation of a mixture including at least a diamine component, a dicarboxylic acid component and water as a starting material, wherein the diamine component includes (A) pentamethylene diamine at a ratio that is equal to or greater than 10 mol % and less than 80 mol % relative to a gross amount of the diamine component; and the dicarboxylic acid component includes (B) at least one selected from the group consisting of an aromatic dicarboxylic acid, an alicyclic dicarboxylic acid and dialkyl ester derivatives thereof at a ratio that is equal to or greater than 76 mol % and equal to or less than 100 mol % relative to a gross amount of the dicarboxylic acid component, the production method comprising: a first step that heats the above mixture, which has a water content equal to or less than 30% by weight, at a temperature equal to or higher than 200° C. under a pressure of 1.8 to 3.

Abstract: A method for producing a polyamide resin characterized by comprising thermally polycondension of tetramethylene diamine and either an aliphatic dicarboxylic acid having 7 or more carbon atoms or a salt thereof, and then being melt-polymerized at a temperature equal to or higher than the melting point thereof until the relative viscosity of a 0.01 g/ml solution thereof in 98% sulfuric acid solution with a 0.01 g/ml content at 25° C. becomes 2.2-5.0.

Abstract: A method for producing a diamine includes purifying a diamine from an aqueous solution containing a diamine salt by adding an alkaline substance to the aqueous solution and then filtering the resulting solution by allowing the solution to pass through a nanofiltration membrane to remove the salt, thereby obtaining an aqueous diamine solution.

Abstract: A polyamide resin obtained by heating and condensation-polymerizing ingredients mainly comprising pentamethylenediamine having a total content of 2,3,4,5-tetrahydropyridine and piperidine of 0.10 wt. % or lower and an aliphatic dicarboxylic acid having 7 or more carbon atoms, a 0.01 g/mL solution of the polyamide resin in 98% sulfuric acid having a relative viscosity at 25° C. of 1.8-4.5. The polyamide resin has excellent heat resistance, extremely low water absorption, and excellent melt residence stability and is hence suitable for use as long molded articles represented by automotive radiator tanks, etc.

Abstract: A method for producing a polyamide resin characterized by comprising thermally polycondension of tetramethylene diamine and either an aliphatic dicarboxylic acid having 7 or more carbon atoms or a salt thereof, and then being melt-polymerized at a temperature equal to or higher than the melting point thereof until the relative viscosity of a 0.01 g/ml solution thereof in 98% sulfuric acid solution with a 0.01 g/ml content at 25° C. becomes 2.2-5.0.

Abstract: Disclosed is a polyamide resin which is produced by the polycondensation of (A) pentamethylenediamin, (B) terephthalic acid and/or a derivative thereof, and (C) at least one member selected from adipic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, isophthalic acid, 1,9-diaminononane, 1,10-diaminodecane, 1,12-diaminododecane, caprolactam, undecalactam, laurolactam, aminocaproic acid, 11-aminoundecanoic acid, 12-aminododecanoic acid, and derivatives of these compounds. In the polyamide resin, the ratio of a repeating unit derived from the component (C) is 10 to 50 wt % (inclusive) relative to the total weight of the polymer. A solution of the polyamide resin in 98% sulfuric acid, which contains the polyamide resin at a concentration of 0.01 g/ml, has a relative viscosity of 1.5 to 4.5 at 25° C.

Abstract: A method for producing a diamine includes purifying a diamine from an aqueous solution containing a diamine salt by adding an alkaline substance to the aqueous solution and then filtering the resulting solution by allowing the solution to pass through a nanofiltration membrane to remove the salt, thereby obtaining an aqueous diamine solution.

Abstract: Disclosed is a polyamide resin composition, a method for producing the composition, and articles from the composition. The polyamide resin composition polyamide resin composition is formed by melt-kneading (A) 100 parts by weight of nylon resin, and (B) 5-150 parts by weight of at least one of a non-fibrous inorganic filler having an average particle diameter of 0.05-10 &mgr;m and a fibrous inorganic filler, excluding glass fiber, having a fiber diameter of 0.05-10 &mgr;m. In the polyamide resin composition, an amount of a polyamide resin component deposit remaining on the inorganic filler when the inorganic filler is recovered by dissolving the polyamide resin composition into hexafluoroisopropanol is at least 4 g/m2 per unit surface area of the inorganic filler measured by a BET method. The nylon resin composition is excellent in rigidity and toughness and particularly excellent in high-speed surface impact fracture characteristic.

Abstract: Provided is a polyamide resin composition comprising a melt blend of (A) a polyamide resin, (B) a phyllosilicate, and (C) an olefin compound having a carboxylic acid anhydride group in the molecule or a polymer of the olefin compound, in which the phyllosilicate (B) has a reactive functional group bonded thereto and is such that the exchangeable metal ions existing in the inter layers are ion-exchanged with organic onium ions. The composition has a reduced inorganic ash content and has both high stiffness and high ductility. Optionally, the composition contains an inorganic filler apart from the phyllosilicate, an impact modifier, and a flame retardant, still having high stiffness and high ductility.