Tdk Corporation

Rie Ihara

Naoki Hayashida

Kazushi Tanaka

Hidetake Itoh

Tetsuro Mizushima

Jiro Yoshinari

Takuya Tsukagoshi

Hideaki Miura

Takayuki Maruyama

Tomohiko Kato

Hideki Sunohara

A gas detection sheet wherein a porous coordination polymer represented by formula (1) is supported on a supporter and the air permeability of the gas detection sheet is 0.8 seconds or more and 60 seconds or less.Fe(pz)[NiM(CN)]&#x2003;&#x2003;(1)(wherein, pz=pyrazine, 0.95&#x2264;x&#x3c;1.05, M=Pd or Pt, 0&#x2264;y&#x3c;0.15).

Gas detection sheet

The present invention provides a hologram recording material which is not required to be subjected to pre-exposure treatment at the time of recording, attains high refractive index change, high sensitivity, low scattering, environment resistance, durability, low dimensional change, and high multiplicity, and is suitable for volume hologram recording. Also, the present invention provides a hologram recording medium. A hologram recording material comprising a matrix material having a softening temperature of 50&#xb0; C. or higher, and a photopolymerizable monomer which is in a liquid phase state at room temperature. The matrix material is preferably contained in an amount of 50% by weight or more and 90% by weight or less of the whole of the hologram recording material. A softening temperature of the hologram recording material is preferably 0&#xb0; C. or higher.

Hologram recording material and hologram recording medium

A hardcoat agent composition comprising a fluorine-containing polyether compound (A) having a perfluoropolyether unit, urethane bond and active energy ray reactive group and a curable compound (B) having equal to or more than 2 active energy ray polymerizing groups in the molecule. An optical information medium having a film substance composed of single or multiple layers containing at least the recording layeror the reflecting layer on the supporting substrate, the optical information medium wherein at least either the surface of the supporting substrateor that of the above-mentioned film substance is formed by the hardcoat layercontaining a curable substance of the above-mentioned hardcoat agent composition.

Hardcoat agent composition and optical information medium thereof

The present invention provides an optical information medium that is less susceptible to warp in the disk surface while offering significantly high scratch resistance and abrasion resistance, and a method for producing the optical information medium. An optical information medium () comprising a supporting substrate () and a film element, the film element disposed on the supporting substrate () and composed of one or more layers including at least a recording layer () or a reflective layer (), wherein at least one of the supporting substrate-side surface and the film element-side surface is formed of a hard coat layer () of a cured product of a composition comprising (A) inorganic fine particles with an average particle size of 100 nm or less, (B) a reactive silicone, and (C) an active energy ray-curable compound.

Optical information medium and production method therefor

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Tokyo, Japan

Rie Ihara