Kureha Corporation

Kureha Kagaku Kogyo K.k.

Kureha Kagaku Kogyo Kabushiki Kaisha

Naomitsu Nishihata

Masahito Tada

Takayuki Katto

Hiroyuki Sato

Yukio Ichikawa

Tatsuya Kawasaki

Kiyomi Ohuchi

Kazuyuki Suzuki

Yoshikichi Teramoto

Chikau Onodera

Shunzo Endo

Hideki Kitamura

Yasuhiro Suzuki

Shiro Arai

A resin composition for encapsulation, which contains 100 parts by weight of a synthetic resin, 10 to 500 parts by weight of a carbon precursor having a volume resistivity of 10to 10&#x3a9;&#xb7;cm, 0 to 60 parts by weight of a conductive filler having a volume resistivity lower than 10&#x3a9;&#xb7;cm and 100 to 1,500 parts by weight of an other inorganic filler.

Resin composition for encapsulation and semiconductor unit encapsulated with resin

A semiconductive film formed from a resin composition comprising poly(ether ether ketone) and a conductive filler, wherein the average value of its thickness is 30 to 250 &#x3bc;m, the maximum value of the thickness is 1 to 1.3 times as much as the minimum value thereof, the average value of its volume resistivity is 1.0&#xd7;10to 1.0&#xd7;10&#x3a9;cm, the maximum value of the volume resistivity is 1 to 30 times as much as the minimum value thereof, and the number of reciprocating folds as determined in accordance with the testing method for folding endurance is at least 5,000 times, and a production process thereof.

Semiconductive film, electric charge control member and process for producing the semiconductive film

A stock shape for machining, which is composed of an extruded product of a resin composition comprising 30 to 94% by mass of a thermoplastic resin (A), 5 to 40% by mass of a carbon precursor (B) having a volume resistivity of 10to 10&#x3a9;cm and 1 to 30% by mass of a conductive filler (C) having a volume resistivity lower than 10&#x3a9;cm and has a thickness or diameter exceeding 3 mm, and a process for producing the stock shape by extrusion and solidification of the resin composition.

Stock shape for machining

A stock shape for machining, which is composed of an extruded product of a resin composition comprising 30 to 94% by mass of a thermoplastic resin (A), 5 to 40% by mass of a carbon precursor (B) having a volume resistivity of 10to 10&#x3a9;cm and 1 to 30% by mass of a conductive filler (C) having a volume resistivity lower than 10&#x3a9;&#xb7;cm and has a thickness or diameter exceeding 3 mm, and a process for producing the stock shape by extrusion and solidification of the resin composition.

Stock shape for machining and production process thereof

The invention provides an IC socket of synthetic resin, whose surface resistivity is strictly controlled to the desired level and which is much more improved in terms of electrical insulation properties, mechanical properties, heat resistance, chemical resistance, dimensional stability, etc. The IC socket is obtained by molding or otherwise forming a thermoplastic resin composition comprising 40 to 94% by mass of a thermoplastic resin, 5 to 30% by mass of a carbon precursor having a volume resistivity of 10to 10&#x3a9;&#xb7;cm and 1 to 30% by mass of an electrical conductive filler having a volume resistivity of less than 10&#x3a9;&#xb7;cm.

IC socket

A resin composition comprises a resin component containing 40 to 99% by mass of a poly(aryl ketone) and 1 to 60% by mass of a poly(arylene sulfide), and 0.1 to 5 parts by mass, per 100 parts by mass of the resin component, of at least one thermosetting imide resin selected from the group consisting of a polyfunctional unsaturated imide compound and its thermoset product. The resin composition is improved in terms of compatibility, moldability or formability, melt flowability, mechanical properties, etc. while maintaining high levels of various properties such as heat resistance, flame retardancy, chemical resistance and dimensional stability.

Resin composition of poly(aryl ketone), poly(arylene sulfide) and thermosetting imide resine

The invention provides a solid polymer fuel cell separator that is molded or formed of a resin composition comprising a thermoplastic resin, a conductive carbon black having a bulk density of at least 0.3 g/ml and a DBP oil absorption of up to 150 ml/100 g and optionally a conductive filler having a volume resistivity of less than 1 &#x3a9;&#xb7;cm. The invention also provides a solid polymer fuel cell separator production process involving injection molding of the resin composition.

Separator for solid polymer fuel cells, and production process thereof

A poly(arylene sulfide) resin composition comprising a poly(arylene sulfide) and, as a modifier, an organic amide compound compounded in a proportion of 0.2 to 10 parts by weight per 100 parts by weight of the poly(arylene sulfide).

Polyarylene sulfide resin composition

A thermoplastic resin composition is formed by mixing (A) 30-84.9 wt. % of a crystalline thermoplastic resin, (B) 15-65 wt. % of a graft copolymer obtained by graft-polymerizing an ethylenically unsaturated monomer onto a rubber trunk polymer having an alkylene oxide group and (C) 0.1-5 wt. % of an anionic surfactant. As a result, it is possible to obtain a non-black thermoplastic resin composition which shows an antistatic property at a level suitable for use as an ESD (electrical static dissipative) and can be colored into arbitrary hues.

Thermoplastic resin composition

A moderately conductive synthetic resin composition comprising a synthetic resin (A), a carbon precursor (B) and at least one conductive filler (C) selected from the group consisting of a non-fibrous conductive filler and a metallic fibrous material, both, having a volume resistivity lower than 10 &OHgr;&middot;cm, and a moderately conductive synthetic resin composition comprising a synthetic resin (A), a carbon precursor (B) and carbon fiber (E).

Synthetic resin composition

A thermoplastic resin composition improved in compatibility, molding or forming ability, melt-flow properties and mechanical properties, which comprises 100 parts by weight of a resin component containing 40 to 99 wt. % of a poly(arylene sulfide) (A) and 1 to 60 wt. % of polyamide-imide (B), and 0.01 to 10 parts by weight of a silane compound (C) containing at least one functional group selected from the group consisting of amino, ureido, epoxy, isocyanate and mercapto groups.

A process for the production of a poly(arylene thioether) containing phthalic anhydride groups wherein a dihalogen-substituted aromatic compound is reacted with an alkali metal sulfide in a polar organic solvent containing water to produce the poly(arylene thioether) is disclosed. This process comprises causing a monohalogen-substituted phthalic compound to exist in a polymerization reaction system, and controlling a ratio, a/b of the number of moles, a of the charged dihalogen-substituted aromatic compound to the number of moles, b of the charged alkali metal sulfide within a range of 0.8&lt;a/b&lt;1.

Process for production of poly(arylene thioether) containing phthalic

A resin composition includes a poly(arylene thioether) and a polyamide. At least part of the poly(arylene thioether) consists of a poly(arylene thioether) containing phthalic anhydride groups.

Growing community of inventors

Fukushima, Japan

Naomitsu Nishihata