Other

Jsr Corporation

Dsm N.v.

Tokyo Institute of Technology

Japan Fine Coatings

Yuichi Eriyama

Takashi Ukachi

Atsushi Baba

Yoshikazu Yamaguchi

Isao Nishiwaki

Takao Yashiro

Yasuhiro Nakamura

Mitsuru Ueda

Tsuyoshi Watanabe

Michiko Takahashi

Hideaki Takase

Shinji Ando

Keisuke Kuriyama

Toshihiko Takahashi

Yukio Maeda

Shuichi Sugawara

Jun Huangfu

Jin-gang Liu

Yuzi Shibasaki

Isao Nishikawi

Keiko Kato

Miwa Ariyuki

Provided is an optical waveguide manufacturing method that makes the thickness of a clad layer in the vicinity of a core portion uniform. A first lamination film is fabricated by forming a clad layer by forming a first curable resin layer for clad formation on a first base film and curing the first curable resin layer, and forming a core portion by forming a second curable resin layer for core formation having a higher refractive index than that of the clad layer after cured on the clad layer and selectively curing the second curable resin layer. A second lamination film is fabricated by forming a clad layer by forming a third curable resin layer for clad formation on a second base film and curing the third curable resin layer. In the optical waveguide manufacturing method, the first lamination film in which the core portion is formed and the second lamination film are bonded together with a fourth curable resin layer for clad formation interposed therebetween, and the curable resin layer interposed between the first lamination film and the second lamination film is cured to form a clad layer.

Dry film for optical waveguide and method for manufacturing optical waveguide by using the dry film

It is provided for a resin composition including (A) at least one polyamic acid having the structure represented by the following formula (1): wherein Ris independently an alkyl group having 1 to 3 carbon atoms or a cyano group; a is independently an integer of 0 to 4; R is a tetravalent organic group; n is an integer of 1 to 4; and m is an integer of 1 to 100,000, and (E) an organic solvent.

Resin composition, cured product and optical parts

An optical position sensing component includes an input light guiding portion and a received light guiding portion. The input light guiding portion is constituted by a polymer waveguide and inputs a light emitted from a near-infrared light-emitting source and outputs the light to a lens for collimate through a plurality of ends. The received light guiding portion is constituted by a polymer waveguide and inputs the light output from the light guiding portion and outputs the input light to a near-infrared light-receiving device. Further, the polymer waveguide has a core portion composed of a cured photosensitive resin composition.

Optical position sensing component, optical position sensing device, and manufacturing method thereof

A curable resin composition comprising (A) reactive particles prepared by bonding (A1) at least one of oxide particles of an element selected from the group consisting of silicon, aluminum, zirconium, titanium, zinc, germanium, indium, tin, antimony, ruthenium, rhenium, silver, nickel, cupper and cerium, and (A2) an organic compound which comprises a polymerizable unsaturated group, (B) a compound having two or more polymerizable unsaturated groups in the molecule, and optionally (C) a terminal reactive polysiloxane compound having at least one polymerizable group, other than organic compound (A2).

Curable resin composition, cured film, and composite product

The invention relates to a resin composition exhibiting excellent coatability and capable of forming coatings with high hardness, superior scratch resistance, low curling properties, superb adhesion, excellent transparency, and superior coating surface appearance without a wavy striation, streaks, unevenness of coatings, cissing, and the like, as well as cured products made from the resin composition.

Resin composition and cured product

Reactive silica particles, process for manufacturing the same, use of the same

Provided is a liquid curable resin composition which can produce transparent cured products with a high refractive index, high hardness, and superior abrasion resistance, and which can be suitably used as a coating material. The liquid curable resin composition comprises: (A) a poly-functional (meth)acrylic compound having at least three (meth) acryloyl groups in the molecule; (B) a reaction product obtained by the reaction of a compound having a polymerizable unsaturated group and alkoxysilyl group in the molecule and particles metal oxide, the metals being preferably selected from the group consisting of zirconium, antimony, zinc, tin, cerium, and titanium; and (C) a radiation polymerization initiator.

Radiation-curable metal particles and curable resin compositions comprising these particles

Liquid curable resin composition, coating, and cured coating therefrom

A radiation curable resin composition comprising (A) a first linear (meth)acryloyl and aromatic group-containing compound, (B) a second branched (meth)acryloyl group-containing compound, (C) a radiation polymerization initiator, and (D) silica particles having a secondary average particle diameter of 0.5 to 5 &mgr;m. The composition is suitable for use as a printable heat-resistant protective coat which is used for information recording media such as thermosensible recording cards and thermosensible photographic printing paper.

Radiation curable resin composition

Reactive silica particles capable of producing coatings exhibiting excellent scratch resistance, weather resistance, adhesiveness, and curability, while satisfying a wide spectrum of performances from transparency to semi-transparency and providing a glossy surface as well as a frosty surface. Reactive silica particles comprises silica particles and an organic compound chemically bonded to the silica particles via a silyloxy group, wherein the organic compound has a polymerizable unsaturated group, a group represented by the following formula (1), ##STR1## (wherein X is a group selected from --NH--, --O--, and --S-- and Y is a group selected from oxygen and sulfur, provided that when X is --O--, Y is a sulfur atom), and a group represented by the following formula (2), ##STR2## (wherein Z is a group selected from oxygen and sulfur)

Reactive silica particles, process for manufacturing the same, use of

A liquid curable resin composition containing:

Liquid curable resin composition

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Tsukuba, Japan

Yuichi Eriyama