Toray Industries, Inc.

Koito Manufacturing Company, Ltd.

Kei Saitoh

Hideki Matsumoto

Atsushi Ishio

Shunsuke Horiuchi

Naoya Ouchiyama

Hiroyuki Isago

Takeshi Unohara

Hideyuki Umetsu

Sadayuki Kobayashi

Daisuke Mochizuki

Hidetaka Anma

Hiroaki Hara

Masayuki Kobayashi

Kenichi Okunaga

Tomoya Yoshida

Naoya Nakamura

Yoshiomi Horiguchi

A polyphenylene sulfide resin composition is obtained by mixing a polyphenylene sulfide resin (a), a fluororesin (b) and an organosilane compound (c). When a resin phase-separated structure of a molded product formed from the polyphenylene sulfide resin composition is observed by an electron microscope, the component (a) forms a continuous phase, the component (b) forms a primary dispersed phase having a number-average dispersion diameter of not greater than 1 &#x3bc;m, and a secondary dispersed phase of the component (a) is included in the primary dispersed phase of the component (b).

Polyphenylene sulfide resin composition and manufacturing method of the same

A polyphenylene sulfide resin composition has excellent heat resistance, flowability and lightweight property as well as surface smoothness and impact resistance. The polyphenylene sulfide resin composition includes 1 to 30 parts by weight of a mica (b) having an aspect ratio of not less than 80, relative to 100 parts by weight of a polyphenylene sulfide resin (a).

Polyphenylene sulfide resin composition, production method thereof and reflector

A polyarylene sulfide resin composition includes: (A) a polyarylene sulfide resin having a carboxyl group content of more than 100 &#x3bc;mol/g and less than 400 &#x3bc;mol/g, and also having a weight average molecular weight of 10,000 or more and less than 100,000; and (B) a filler. The polyarylene sulfide resin composition has improved mechanical properties and chemical resistance while maintaining intrinsic high melting point of a polyarylene sulfide.

Polyarylene sulfide resin composition

The invention provides a PPS resin composition having excellent heat resistance and excellent electrical properties without damaging excellent physical properties including mechanical properties and low gas generation which PPS intrinsically has. There is provided a resin composition comprising (a) a polyphenylene sulfide resin and (b) one or more copolymers selected among a tetrafluoroethylene/hexafluoropropylene copolymer, an ethylene/tetrafluoroethylene copolymer and a tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer. In the resin composition, (a) the polyphenylene sulfide resin forms a continuous phase, (b) one copolymer selected among the above components forms primary dispersed phases, and the primary dispersed phase includes secondary dispersed phases formed by a component different from the component of the primary dispersed phase.

Polyphenylene sulfide resin composition, production method of the same and molded product

There is provided a polyphenylene sulfide resin composition, comprising 5 to 95% by weight of a component (B) which is a polyphenylene sulfide resin having a weight-average molecular weight of not less than 10,000 and a weight loss percentage &#x394;Wr of not greater than 0.18% under heating, relative to 95 to 5% by weight of a component (A) which is a polyphenylene sulfide resin having the weight loss percentage &#x394;Wr of greater than 0.18%, wherein a total of the component (A) and the component (B) is equal to 100% by weight.

Polyphenylene sulfide resin composition, molded product of polyphenylene sulfide resin composition and production method of polyphenylene sulfide resin composition

There is provided a polyphenylene sulfide (PPS) resin composition, comprising: 5 to 50 parts by weight of a polyamide resin (b) and 50 to 250 parts by weight of a metal hydroxide (c) relative to 100 parts by weight of a polyphenylene sulfide resin (a), wherein the metal hydroxide is dispersed in the composition at an average secondary particle diameter equal to or less than 5 &#x3bc;m. The PPS resin composition may provide excellent tracking resistance without significantly damaging various intrinsic properties of a PPS resin, such as excellent mechanical strength and low gas generation.

Polyphenylene sulfide resin composition, production method thereof and molded product thereof

A polyphenylene sulfide resin composition including 100 parts by weight of a resin composition that consists of 99 to 60 wt % of a polyphenylene sulfide resin (a), and 1 to 40 wt % of at least one type of noncrystalline resin (b) selected from the group consisting of polyetherimide resin and polyether sulfone resin and 0.1 to 10 parts by weight of a compound (c) containing at least one group selected from epoxy group, amino group and isocyanate group, wherein the non-crystalline resin (b) forms an island phase and the number-average dispersed particle size of the noncrystalline resin (b) is 1,000 nm or less.

Polyphenylene sulfide resin composition, process for producing the same, and molded article

A process for producing a polyphenylene sulfide resin composition includes melt-kneading about 99 to about 60 wt % of a polyphenylene sulfide resin (a) and about 1 to about 40 wt % of a polyamide resin (b), and about 0.1 to 10 parts by weight of a compatibilizing agent (c) per 100 parts by weight in total of the polyphenylene sulfide resin (a) and the polyamide resin (b), using a double screw extruder with two or more kneading portions at a temperature of the range from a melting peak temperature of the polyphenylene sulfide resin+10&#xb0; C. to a melting peak temperature of the polyphenylene sulfide resin+70&#xb0; C., wherein the polyamide resin (b) is excluded nylon 46 and has a relative viscosity of 1.5 or more measuring in concentrated sulfuric acid at a concentration of 1% and at 25&#xb0; C., wherein the compatibilizing agent (c) is a compound having one or more types of groups selected from epoxy groups, amino group and isocyanate group, and wherein the resin composition has a morphology that the polyphenylene sulfide resin (a) in the resin composition forms a sea phase while the polyamide resin (b) in the resin composition forms an island phase, and the number average dispersed particle size of the polyamide resin (b) is kept at less than about 500 nm after the resin composition is melted and allowed to reside at 300&#xb0; C. for 30 minutes.

Polyphenylene sulfide resin composition

A polyphenylene sulfide resin treated by thermal oxidation has a generated gas amount of 0.23 wt % or less when the resin is heated and melted in vacuum at 320&#xb0; C. for 2 hours; a residual amount of 3.0 wt % or less as a residue when the resin is dissolved in an amount corresponding to 20 times the weight of the resin, of 1-chloronaphthalene at 250&#xb0; C. for 5 minutes and, as the 1-chloronaphthalene solution, pressure-filtered in a still hot state by a PTFE membrane filter with a pore size of 1 &#x3bc;m or less; and a melt flow rate (measured at a temperature of 315.5&#xb0; C. and at a load of 5000 g according to ASTM D-1238-70) of more than 100 g/10 min to 500 g/10 min.

Polyphenylene sulfide resin, process for producing the same, and fiber comprising the same

This invention provides a method for producing a polyarylene sulfide, comprising the step of bringing a low-hydrated alkali metal sulfide containing respectively 0.05 to less than 0.8 mole of water and an organic amide solvent per mole of the sulfur contained in the alkali metal sulfide, into contact with a dihalogenated aromatic compound in an organic polar solvent for polymerization. This invention also provides a polyarylene sulfide obtained by the method. The problem to be solved by this invention is to provide a method for efficiently producing a polyarylene sulfide in a short time using an alkali metal sulfide small in water content and organic amide solvent content.

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Nagoya, Japan

Kei Saitoh