Nissan Chemical Industries Limited

Kyushu University

Nissan Chemical Corporation

Akihiro Tanaka

Keisuke Odoi

Hideo Nagashima

Keisuke Kojima

Masaaki Ozawa

Takashi Sue

Kei Yasui

Toshihiko Nagamura

Osamu Uesugi

Osamu Hirata

Noboru Koga

Satoru Karasawa

Hiroyuki Hayashi

Satoru Hatayama

Hiroki Takemoto

Takeshi Sakano

A complex that includes a metal fine particle dispersant including a branched polymer compound having an ammonium group and having a weight average molecular weight of 500 to 5,000,000; and a metal fine particle, wherein the metal fine particle includes platinum (Pt) or palladium (Pd), the metal fine particle dispersant includes a branched polymer compound of Formula (1): 

Metal fine particle dispersant containing branched polymer compound having ammonium group

There is provided a novel production method of a chlorinated hyperbranched polymer that is optically stable and is capable of derivatizing the chlorinated hyperbranched polymer into various compounds. A production method of a chlorinated hyperbranched polymer for producing a chlorinated hyperbranched polymer of Formula (1): {where X is a chlorine atom; Ris a hydrogen atom or a methyl group; and Ais a phenylene-alkylene group, n is the number of repeating unit structures and is an integer of 2 to 100,000}, comprising the step of substituting a dithiocarbamate group of a hyperbranched polymer of Formula (3): (where R, A, and n are the same as defined in Formula (1); and each of Rand Ris a Calkyl group, a Chydroxyalkyl group, or a Carylalkyl group, or Rand Roptionally form a ring together with a nitrogen atom bonded to Rand R) with a chlorine atom using sulfuryl chloride.

Method for producing chlorinated hyperbranched polymer

The present invention relates to an electrochromic polymer compound composed of a hyperbranched polymer having electrochromic characteristics derived from a quaternary pyridinium salt, a terephthalic acid diester or a biphenyl-4,4'-diester structure, and a varnish, a thin film structure and an electrochromic device that are obtained by the polymer compound. The electrochromic material has high response speed, high coloring efficiency, and excellent repetition stability and can be used for a long time, and has excellent solubility in various solvents.

Electrochromic material

There is provided a metal fine particle dispersant containing a branched polymer compound having an ammonium group. The metal fine particle dispersant of the present invention comprises a branched polymer compound having an ammonium group and having a weight average molecular weight of 500 to 5,000,000. The metal fine particle dispersant has the structure of Formula (1): The present invention also relates to a composition comprising the metal fine particle dispersant and a metal fine particle.

There is provided a method for producing a hyperbranched polymer. A method for producing a hyperbranched polymer comprising polymerizing a dithiocarbamate compound of Formula (1): wherein Ris H or CH; Rand Rare individually a Calkyl group, etc., Ais Formula (2) and/or Formula (3): wherein Ais a linear, branched or cyclic Calkylene group that optionally contains an ether bond or an ester bond and X, X, Xand Xare each independently H, a Calkyl group, etc., by heating at 50 to 250&#xb0; C.

Method for producing hyperbranched polymer

Disclosed is a novel optically stable hyperbranched polymer whose molecular terminal can be derivatized with various compounds; and a method for producing such a polymer. Specifically disclosed is a hyperbranched polymer having a structure represented by Formula (1) wherein a halogen atom is at a molecular terminal. The hyperbranched polymer can be obtained by substituting the molecular terminal dithiocarbamate group of a hyperbranched polymer having a dithiocarbamate group at a molecular terminal, which is obtained by living radical polymerization of a dithiocarbamate compound having a vinyl group structure, with a halogen atom. Also disclosed is a hyperbranched polymer wherein an amino group or an ammonium group is at a molecular terminal instead of a halogen atom.

Hyperbranched polymer and method for producing the same

There is provided a hyperbranched polymer having a nitroxyl group. A hyperbranched polymer comprising at least one organic radical structure (nitroxyl group) of Formula (1), Formula (2) or Formula (3): and having a weight average molecular weight measured by gel permeation chromatography in a converted molecular weight as polystyrene of 500 to 5,000,000.

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Funabashi, Japan

Akihiro Tanaka