Toray Industries, Inc.

Kei Saito

Hideki Matsumoto

Hiroyuki Isago

Yuji Yamanaka

Hisashi Yamanoue

Gen Noguchi

Hideo Matsuoka

Masaru Tateyama

Atsushi Ishio

Takeshi Unohara

Naoya Nakamura

Yoshihiro Yamami

A polyphenylene sulfide resin composition includes a polyphenylene sulfide resin (A); an aromatic vinyl compound block copolymer (B) containing at least one functional group selected from the group consisting of a carboxyl group, an acid anhydride group, a hydroxyl group, an amino group, an epoxy group and an isocyanate group; and an alkoxysilane compound (C) containing at least one functional group selected from the group consisting of an epoxy group, an amino group and an isocyanate group; wherein a phase structure of the polyphenylene sulfide resin composition is a sea-island structure in which the polyphenylene sulfide resin (A) forms a sea phase, and the aromatic vinyl compound block copolymer (B) forms an island phase dispersed in a number average dispersed particle size of 1,000 nm or less.

Polyphenylene sulfide resin composition, method of producing same, and molded article

A polyphenylene sulfide resin composition includes (A) 100 parts by weight of an acid-treated polyphenylene sulfide resin, (B) 10 to 100 parts by weight of a glass fiber, and (C) 0.1 to 10 parts by weight of an amino group-containing alkoxysilane compound, wherein the polyphenylene sulfide resin composition has an exothermic peak temperature (Tmc) of 195&#xb0; C. to 225&#xb0; C., the exothermic peak temperature being observed during a crystallization caused when the polyphenylene sulfide resin composition is melted by heating to 340&#xb0; C. and then cooled at a rate of 20&#xb0; C./minute, using a differential scanning calorimeter.

Poly(phenylene sulfide) resin composition, production method therefor, and molded article

A polyphenylene sulfide resin composition includes a polyphenylene sulfide resin (A), an amino group-containing compound (B), an epoxy group-containing elastomer (C), wherein the polyphenylene sulfide resin (A) forms a continuous phase and the amino group-containing compound (B) and the epoxy group-containing elastomer (C) form a dispersed phase in the morphology of a forming product composed of the resin composition observed with a transmission electron microscope, and the modulus of elongation (the elastic modulus determined by performing a tensile test on an ASTM type 1 dumbbell test piece obtained by injection molding at a cylinder temperature of 300&#xb0; C. and at a mold temperature of 150&#xb0; C., under the conditions in which the distance between chucks is 114 mm, the test piece distance is 100 mm, and the elongation rate is 10 mm/min) of the resin composition is 1.0 MPa or more and 1000 MPa or less.

Polyphenylene sulfide resin composition and hollow forming products using the same

A polyphenylene sulfide block copolymer contains polyphenylene sulfide units and polyorganosiloxane units and has a glass-transition temperature in the range of 80&#xb0; C. or lower and a weight-average molecular weight in the range of 35,000 to 100,000. The polyphenylene sulfide block copolymer has high flexibility as well as high heat resistance and heat aging resistance.

Polyphenylene sulfide block copolymer and manufacturing method therefor

The present invention provides a thermoplastic resin composition which is produced by a method which includes melt-kneading: (a) a polyphenylene sulfide resin, with (b) a polyetherimide resin or a polyethersulfone resin. The thermoplastic resin composition contains 99 to 1% by weight of the component (a) and 1 to 99% by weight of the component (b) based on 100% by weight of the total amount of the component (a) and the component (b). The melt-kneading step is conducted by employing an extruder provided with an elongational flow zone which is a zone in which melt-kneading is performed while being allowed to undergo elongational flow, wherein the flow effect pressure drop is from 50 to 1,000 kg/cmand is determined by subtracting the pressure value (P) of the molten resin in the elongational flow zone from the pressure value (P) of the molten resin before entering the elongational flow zone.

Method for producing thermoplastic resin composition, thermoplastic resin composition, and molded article

The present invention is a polyphenylene sulfide resin composition comprising (a) a polyphenylene sulfide resin and (b) an olefin-based resin, and satisfying the following conditions (i) through (v): (i) The mixing ratio of the polyphenylene sulfide resin (a) and the olefin-based resin (b) is such that the amount of the polyphenylene sulfide resin (a) is in a range from 95 to 60 wt %, while the amount of the olefin-based resin (b) is in a range from 5 to 40 wt %, with the total weight of both the ingredients as 100 wt %; (hi) said olefin-based resin (b) comprising two copolymer: (b-1) an epoxy group-containing olefin copolymer and (b-2) an ethylene/(&#x3b1;-olefin copolymer obtained by copolymerizing ethylene and an &#x3b1;-olefin having 3 to 20 carbon atoms; (iii) as the morphology observed by an electron microscope, said polyphenylene sulfide resin (a) forms a continuous phase, and said olefin-based resin (b) forms a dispersion phase and has a core-shell structure having said ethylene/&#x3b1;-olefin copolymer (b-2) acting as a core component contained in said epoxy group-containing olefin copolymer (b-1) acting as a shell component: (iv) the melt flow rate measured at a temperature of 315.5&#xb0; C. and at a load of 5000 g according to ASTM-D-1238 is in a range from 10 to 50 g/10 min; and (v) the notched impact strength measured at &#x2212;40&#xb0; C. according to ASTM-D-256 is 300 J/m or more. This invention provides a PPS resin composition excellent in flowability, impact properties and low-temperature roughness and suitable for injection molding.

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Nagoya, Japan

Kei Saito