Nof Corporation

Osaka University

Tohoku Techno Arch Co., Ltd.

Eui-chul Kang

Atsuhiko Ogura

Shingo Kataoka

Takashi Iwata

Tomoyuki Ohtake

Tatsuya Kozu

Kazunori Kataoka

Yukio Nagasaki

Katsuaki Suganuma

Kenji Ito

Kazushi Kinbara

Masaya Nogi

Toshinobu Fujimura

Ryutaro Imamura

Natsuki Komoda

Tomoki Uruga

Takahiro Muraoka

Koichi Aoki

Adam Marcin Wawro

Masaya Hikita

A hetero type monodispersed polyethylene glycol containing a compound represented by the following formula (1):NH&#x2014;(CHCHO)&#x2014;CHCHCOOH&#x2003;&#x2003;(1)

Hetero type monodispersed polyethylene glycol, intermediate for production of hetero type monodispersed polyethylene glycol, methods for producing same, and hetero type monodispersed polyethylene glycol conjugate

Provided are a silver element containing silver acetonedicarboxylate with high silver content, and capable of providing a silver element with excellent electrical conductivity, flatness, and adhesivity through heating even for a short time at a low temperature of below the decomposition temperature of the silver salt, and having excellent storage stability, as well as a substrate having a silver element formed thereon with the composition. The composition is characterized by a particular ratio of silver compound (A) represented by formula (1) and amine compound (B) represented by formula (2): (R: H, &#x2014;(CY)a-CH, &#x2014;((CH)b-O&#x2014;CHZ)c-CH; R: &#x2014;(CY)d-CH, &#x2014;((CH)e-O&#x2014;CHZ)f-CH, Y: H, &#x2014;(CH)g-CH; Z: H, &#x2014;(CH)h-CH; a: 0-8; b: 1-4; c: 1-3; d: 1-8; e: 1-4; f: 1-3; g: 1-3; h: 1-2).

Silver-containing composition, and base for use in formation of silver element

Provided are silver nanoparticles having excellent dispersion stability and capable of forming on a substrate a silver element, such as a silver film or line, having excellent electrical conductivity and adhesivity through heating. A method for producing the silver nanoparticles, its dispersion liquid, and a substrate having a silver element formed thereon using the dispersion liquid are disclosed. The silver nanoparticles contain silver compound (A) of formula (1): amine compound (B) having a primary amino group; and polymer (C) obtained by polymerization of a monomer composition containing diol (meth)acrylate compound (c1) having a urethane bond of formula (2): (R: hydrogen atom or methyl group; R: &#x2014;(CH2)n-; n: 1 to 4), and at least one monomer (c2) selected from (meth)acrylate monomers, acrylamide monomers, vinyl monomers, vinyl ether monomers, or monomers having an epoxy group.

Silver nanoparticles, method for producing same, silver nanoparticle dispersion liquid, and base provided with silver material

A composition for copper patterning and a method of copper patterning using the composition are provided, which composition is excellently safe in copper patterning, sintering at lower temperatures, and capable of forming a highly conducive copper pattern of a desired shape even on a plastic substrate. The composition contains Component A: a copper &#x3b2;-ketocarboxylate compound of formula (1): (R1, R2: H or C1-C6 straight- or C3-C6 branched-hydrocarbon group, etc.); and based on 1 mol of this compound, Component B: an amine compound having a boiling point of not higher than 250&#xb0; C. at 0.1 to 500 mol; and Component C-1: an organic acid having pKa of not more than 4 at 0.01 to 20 mol, and/or Component C-2: an organic copper compound composed of copper and an organic acid having pKa of not more than 4 at 0.01 to 100 mol. The composition is useful in the field of electronics.

Composition for forming copper pattern and method for forming copper pattern

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

This invention provides PEG-modified semiconductor nanoparticles of which fluorescence intensity is effectively inhibited from lowering, which are capable of forming a stable dispersion in water, and which are capable of bonding easily with biomolecules having specific recognition, as well as methods for conveniently preparing such nanoparticles, and a material for biological diagnosis. The water-soluble PEG-modified semiconductor nanoparticles of the present invention includes a structure having PEG of a number average molecular weight of 300 to 20000 having a thiol group at one end, bonded via cadmium to II&#x2013;VI semiconductor nanocrystals of a core-shell structure having a ZnX (wherein X stands for O, S, Se, or Te) shell.

Polyethylene glycol-modified semiconductor nanoparticles, method for producing the same, and material for biological diagnosis

Growing community of inventors

Tsukuba, Japan

Eui-chul Kang