Dic Corporation

Dainippon Ink and Chemicals, Incorporated

Kawamura Institute of Chemical Research

Seungtaeg Lee

Ren-Hua Jin

Hiroshi Hasebe

Naoki Obi

Tsuyoshi Morita

Koichiro Matsuki

Yuji Ohashi

Tatsuo Kawara

Hirohide Nakaguma

Masayuki Moriwaki

Rika Kimura

Akeo Takahashi

Zhiqiang Shi

Tomoyo Kajii

Haifeng Zhao

Zongwu Yao

Provided are metal nanoparticle composite body whose multiple properties, such as a good metal nanoparticle control property, high dispersion stability, a good low-temperature firing property, and ease of purifying and separating metal nanoparticles, are intentionally added and controlled so that practical electrical conductivity can be exhibited, a metal colloidal solution in which the metal nanoparticle composite body is dispersed, and methods for producing these. A metal nanoparticle composite body includes a nitrogen-containing compound (A) and a metal nanoparticle (B), in which the nitrogen-containing compound (A) contains an oxidized nitrogen atom. A metal colloidal solution is obtained by dispersing the metal nanoparticle composite body in a medium. A method for producing a metal colloidal solution is characterized in that metal ions are reduced in a medium in the presence of a nitrogen-containing compound (A) containing an oxidized nitrogen atom so as to form metal nanoparticles (B).

Metal nanoparticle composite body, metal colloidal solution, and methods for producing these

Disclosed is a method for producing a silver-containing nanostructure which can reduce the time required for a post treatment step and the amount of a waste material and which is achieved by the application of the reduction reaction of silver oxide; and a silver-containing nanostructure having a specific structure, which can be produced by the method. Specifically disclosed is a method for producing a silver-containing nanostructure, including dispersing a polymeric compound in which a hydrophilic segment is bonded to a polyalkyleneimine chain in a medium, adding silver oxide thereto, and carrying out a reduction reaction of the silver oxide, thereby obtaining a silver-containing nanostructure. In the method, a structure having a branched structure can be produced when a specific compound is used as a complexing agent. The silver-containing nanostructure thus produced can be used as a conductive paste or the like.

Method for production of silver-containing nano-structure, and silver-containing nano-structure

An aqueous coating composition comprising a hydrophilic cationic polymer having an amino group (A), nonionic polyalcohol (B), a tri- or more valent silane compound (C), and water (D). According to the aqueous coating composition of the present invention, it is possible to produce an organic and inorganic hybrid coating film having a high degree of hardness and excellent abrasion resistance in relative mild production conditions by a simple method.

Aqueous coating composition

The present invention provides a comb-shaped epoxy resin represented by the following formula (1): in the formula (1), Xand Xrepresent a divalent group having a residue selected from xanthene residue, biphenylene residue, hydrogenated bisphenol residue, alkylene residue and polyoxyalkylene residue, each may having a methyl group or a ethyl group as a substituent, and at least one of them is an aromatic residue, Y represents a polymer chain such as linear polymer chain, a number average polymerization degree being 5 to 2000, and n (number average polymerization degree) represents an integer within a range of 3 to 200, and to a method for preparing the comb-shaped epoxy resin.

Comb-shaped epoxy resin and method for preparing comb-shaped epoxy resin

Polymerizable composition showing liquid-crystal phase and optically anisotropic object made with the same

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Sakura, Japan

Seungtaeg Lee