Nippon Kayaku Kabushiki Kaisha

Osaka University

Noriko Kiyoyanagi

Masataka Nakanishi

Toru Kurihashi

Yoshihiro Kawata

Junko Ichikawa

Michiharu Arifuku

Satoshi Mori

Minoru Yokoshima

Yukihiro Hara

Yuichiro Matsuo

Takahiro Higeta

Masaki Shinmoto

Masahiro Imaizumi

Hiroo Koyanagi

Myeongjin Kang

Kazuki Fujimoto

Yoshihiro Kobayashi

Ryota Negishi

Shoji Koriyama

Shoko Saito

Shogo Agata

An infrared shielding sheet includes a laminated film formed by alternately laminating a high refractive index resin layer containing fine particles and a low refractive index resin layer containing fine particles. At least one of the low refractive index resin layers has a value of 0.1 or more that is obtained by subtracting a refractive index at an arbitrary wavelength from 780 to 2500 nm from a refractive index at a wavelength of 550 nm. The low refractive index resin layer has a refractive index lower than a refractive index of the high refractive index resin layer at any wavelength in a range from 550 nm to the arbitrary wavelength inclusive.

Infrared shielding sheet, method for manufacturing the same, and use of the same

A cured product obtainable by curing an epoxy resin composition that is suitable for producing optical sheets. The epoxy resin composition includes a polyvalent carboxylic acid (A) represented by formula (I): wherein, R's each independently represent a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, or a carboxyl group; q represents the number of substituent R's, and represents an integer from 1 to 4; and P represents the following X: wherein there may be a plural number of R's per ring, and R's each independently represent a hydrogen atom or a methyl group; and * represents a bonding site linked to the oxygen atom; and an epoxy resin (B) having an aliphatic cyclic structure in the molecule.

Epoxy resin composition for transparent sheets and cured product thereof

A cured product obtainable by impregnating a glass cloth with an epoxy resin composition that is suitable for producing optical sheets. The epoxy resin composition includes a polyvalent carboxylic acid (A) represented by formula (I): wherein, R's each independently represent a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, or a carboxyl group; q represents the number of substituent R's, and represents an integer from 1 to 4; and P represents the following X: wherein there may be a plural number of R's per ring, and R's each independently represent a hydrogen atom or a methyl group; and * represents a bonding site linked to the oxygen atom; and an epoxy resin (B) having an aliphatic cyclic structure in the molecule. The cured product has a refractive index at 25&#xb0; C. of 1.51 or higher.

Problem To provide a process for producing single-walled carbon nanotubes with which highly pure, high-quality single-walled carbon nanotubes can be produced with high efficiency, and to provide a transparent conductive film using the single-walled carbon nanotubes obtained by that production method. Solution A process for producing single-walled carbon nanotubes by chemical vapor deposition (CVD), wherein particles of a nonmetallic material containing 500 ppm or lower of metallic impurities including metals and compounds thereof are used as growth nuclei; and after a growth gas is introduced into a furnace used for growing carbon nanotubes, the growth gas used in an initial stage of growth of carbon nanotubes and the growth gas used in a stage of growth of regular carbon nanotubes (stationary growth stage) thereafter are prepared to different compositions and different partial pressures.

High purity carbon nanotube, process for preparing the same and transparent conductive film using the same

An epoxy resin composition for optical sheets, the composition comprising a polyvalent carboxylic acid (A) represented by formula (I): wherein R's each independently represent a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, or a carboxyl group; q represents the number of substituent R's, and represents an integer from 1 to 4; and P represents the following X: wherein there may be a plural number of R's per ring, and R's each independently represent a hydrogen atom or a methyl group; and * represents a bonding site linked to the oxygen atom; and an epoxy resin (B) having an aliphatic cyclic structure in the molecule.

The present invention relates to a new urethane oligomer (A) and a resin composition comprising (A) and an unsaturated group containing polycarboxylic acid resin (B) that can be diluted with water and is excellent in providing a cured product and that is suitable for a solder resist and an interlayer dielectric layer because the cured product is excellent in flexibility, soldering-heat resistance or the like and allows a development with an organic solvent or a dilute alkali solution; a photosensitive resin composition suitable for an etching resist or a cover lay; and a photosensitive film obtained thereby.

Urethane oligomer, resin compositions thereof, and cured article thereof

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Tokyo, Japan

Noriko Kiyoyanagi