Nof Corporation

Shingo Kataoka

Eui-chul Kang

Atsuhiko Ogura

Takashi Iwata

Kenji Ito

Yasushi Sugihara

Yuto Ichihara

Eui-Chul Kang

Provided is a urethane curable composition including: a catalyst (a); a polyol (b) having two or more hydroxyl groups in one molecule; a polyisocyanate (c) having two or more isocyanate groups in one molecule; and silica particles (d) at a predetermined ratio, in which the catalyst (a) is a metal carboxylate represented by a formula (1):M(OCOR)n&#x2003;&#x2003;(1)

Urethane curable composition

The present disclosure provides an inorganic-organic hybrid film which is excellent in transparency, adhesion, heat resistance, weatherability, and anti-rust property, whose refractive index may be controlled easily, and which is also excellent in hardness. Also provided are an inorganic-organic hybrid composition as a starting material for the film, and a hard coating material, an optical material, an anti-rust coating material, and a conductive coating material, all utilizing the composition. The composition is characterized by containing organic component (A) composed of monomer component (a1) containing a particular diol (meth)acrylate compound (U) having a urethane bond, or polymer component (a2) containing polymer (P) obtained by polymerization of monomer component (a1), and inorganic component (B), wherein the ratio of the organic component (A) to the inorganic component (B) is 1:99 to 99:1 by mass.

Inorganic-organic hybrid composition and use thereof

The present invention provides compounds having in their molecule a structure contributing to high hydrophilicity, and having high photopolymerizability, as well as polymers of such compounds, and a method for producing the compound. The compounds are diol (meth)acrylate having a urethane bond represented by the formula (1), and cyclic ketal (meth)acrylate having a urethane bond represented by the formula (2): (R: H, &#x2014;CH; R: &#x2014;(CH)n-; R: &#x2014;(CH)m-; n: 1-4; m: 1-8; (AO): C2-C4 oxyalkylene group; x: 0-1000; R, R: H, &#x2014;CH, &#x2014;CH).

Diol (meth) acrylate compound having urethane bond, method for producing the same, and polymer thereof

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Tsukuba, Japan

Shingo Kataoka