Toray Industries, Inc.

Yuji Yamanaka

Hideki Matsumoto

Hiroyuki Isago

Takeshi Unohara

Kei Saito

Yuichiro Miyahara

Yuichiro Miyabara

A polyarylene sulfide copolymer has a glass transition temperature of 95&#xb0; C. or higher and 190&#xb0; C. or lower and has a melting point of 300&#xb0; C. or lower or does not have a melting point, as measured by differential scanning calorimetry, and the copolymer containing as a structural unit arylene sulfide units having a number average molecular weight (Mn) of 1,000 or more and 10,000 or less. The polyarylene sulfide copolymer can be provided with high physical stability such as in rigidity at high temperature and excellent moldability and chemical resistance.

Polyarylene sulfide copolymer and method of producing the same

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.

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Nagoya, Japan

Yuji Yamanaka