Kureha Kagaku Kogyo Kabushiki Kaisha

Kureha Kagaku Kogyo K.k.

Satoru Matsunaga

Yoshikichi Teramoto

Hideki Kitamura

Toshiya Mizuno

Hideyuki Yasumi

Tooru Misawa

Nobuhiro Moriyama

Masamichi Akatsu

Hisaaki Terashima

Yosikiti Teramoto

Mitsuru Ito

Syuji Terasaki

Masayuki Hino

A semiconductive polyvinylidene fluoride resin composition comprising 100 parts by weight of a polyvinylidene fluoride resin, 0.03 to 10 parts by weight of at least one tetraalkylammonium salt selected from the group consisting of tetraalkylammonium sulfates and tetraalkylammonium sulfites, and 1 to 20 parts by weight of conductive carbon black. A formed or molded product composed of the semiconductive polyvinylidene fluoride resin composition.

Semiconductive polyvinylidene fluoride resin composition

The invention relates to polyvinylidene fluoride resin compositions comprising 100 parts by weight of a polyvinylidene fluoride resin, and 0.03 to 10 parts by weight of at least one compound selected from the group consisting of alkyl quaternary ammonium sulfates and alkyl quaternary ammonium sulfites.

Polyvinylidene fluoride resin composition

A moistureproof film composed of a transparent multi-layer film having a layer structure that thin metal or nonmetal oxide layers (C) are respectively arranged directly or through an adhesive layer (B) on both sides of a hygroscopic resin layer (A), and having a water vapor transmission rate of at most 0.05 g/m &middot;24 hr as measured at a temperature of 60&deg; C. and a relative humidity of 90%, and a quantity of water vapor transmission for 50 hours of at most 0.15 g/m as measured at a temperature of 40&deg; C. and a relative humidity of 100%, a production process thereof, an EL device sealed with the moistureproof film, and a fabrication process of the EL device.

Moistureproofing film and electroluminescent device

The invention relates to a transfer material-carrying member formed from a resin composition comprising at least two resins selected from the group consisting of (A) a polyester resin containing a predominant repeating unit composed of ethylene terephthalate and having a reduced viscosity of at least 0.9 dl/g, (B) a polyamide resin, and (C) a polycarbonate resin, wherein the compositional proportions by mass % of the respective resins are included within a range of a pentagon having points (98, 2, 0), (85, 15, 0), (65, 15, 20), (72, 0, 28) and (90, 0, 10) as vertexes when represented by a triangular coordinate indicated in the above order (A, B, C). The member has excellent mechanical fatigue endurance, tensile elongation at break, mechanical endurance, stiffness and the like and a high specific dielectric constant and makes it possible to lower voltage required upon repeated charging and discharging.

Transfer material-carrying member

Transfer sheet

The disclosure describes dielectrics for a transfer sheet carrying member used in electrophotographic image forming apparatus, comprising 80 to 96 mass % of a vinylidene fluoride-based resin and 4 to 20 mass % of a methyl methacrylate-based resin.

Dielectrics for transfer sheet carrying member

A transfer sheet for printing media of electrophotographic copying machines or printers comprises a polycarbonate-based resin or a composition containing not less than 75% by mass of a polycarbonate-based resin, and having characteristics that:

Transfer sheet of polycarbonate-based resin

Disclosed herein is a process for producing biaxially stretched polyparaphenylene sulfide film including the steps of melt-molding a polyparaphenylene sulfide resin into a sheet-form or film-form, rapidly chilling the thus molded sheet or film thereby obtaining an amorphous and non-stretched sheet or film, subjecting the amorphous and non-stretched sheet or film to thermal treatment for from 0.5 to 20 sec at a temperature of from 150.degree. to 300.degree. C., cooling the thus treated film or sheet to room temperature and subjecting the thus cooled film or sheet to biaxial stretching at a temperature of from 80.degree. to 120.degree. C.

Process for producing biaxially stretched polyparaphenylene sulfide film

Disclosed herein are a biaxially stretched polyparaphenylene sulfide film having protuberances on the surface of the film in number of not less than 10.sup.2 /mm.sup.2 of the surface thereof, an average diameter of the bottom part of the protuberances being from 5 to 40 .mu.m and an average height of the protuberances being from 0.3 to 2 .mu.m, and process for producing the same.

Growing community of inventors

Ibaraki, Japan

Satoru Matsunaga