Mitsubishi Kagaku Media Co., Ltd.

Mitsubishi Chemical Corporation

Kenichi Satake

Hisashi Shoda

Yuki Suzuki

Tomoko Maeda

Yutaka Kurose

Takashi Miyazawa

Wataru Sato

Mayumi Kimura

Yuko Naitou

Rieko Fujita

Hideki Tamagawa

Yukiko Takahashi

Mitsunori Furuya

Koji Nakamura

Shingo Namiki

Michiaki Fuji

Hisatoshi Uehara

Hiroyuki Hayashi

Yuuichi Hirami

Kiminori Kawakami

Jyunya Kawai

Maki Oba

Junya Kawai

Kazuki Fukumoto

Yuko Naito

A thermoplastic resin including a structural unit of formula (1): wherein Ato Aare each independently ═CH— or ═N—, and at least one of Ato Ais ═N—. Rto Rare each independently a hydrogen atom, an alkyl group, an aryl group, a heteroaryl group, or the like. At least two adjacent groups out of Rto Rare optionally bonded to each other to form a ring. Rand Rare each independently a direct bond or an optionally substituted alkylene group having 1 to 20 carbon atoms. X is an oxygen atom, a carbonyl group, or an optionally substituted amino group, and n is an integer of 1 to 5. A retardation film, a circularly polarizing plate containing the thermoplastic resin are disclosed.

Thermoplastic resin, optical film made therefrom, diol compound, diester compound

The present invention relates to a polycarbonate resin containing, in the molecule, a structure represented by the following formula (1): wherein X has a structure represented by any one of the following formula (2) to (4): wherein each of Rto Rindependently represents a hydrogen atom or an organic group having a carbon number of 1 to 30; the organic group may have an arbitrary substituent, and any two or more members of Rto Rmay combine with each other to form a ring, which is excellent in heat resistance, transparency, light resistance, weather resistance and mechanical strength.

Polycarbonate resin

A copolymer containing a repeating unit having a dioxopyrrole condensed ring skeleton and a repeating unit having a dithieno condensed ring skeleton and also having a specific substituent is provided.

Copolymer, organic semiconductor material, organic electrical device, photovoltaic module

The invention addresses a problem of obtaining a conjugated polymer having a higher molecular weight through coupling reaction of monomers using a transition metal catalyst. The invention relates to a method for producing a conjugated polymer, which comprises polymerizing one or more monomers through a coupling reaction, wherein the coupling reaction of the monomer is carried out by using one or more kinds of homogeneous transition metal complex catalysts and one or more kinds of heterogeneous transition metal complex catalysts in combination.

Method for producing conjugated polymer, conjugated polymer, photoelectric conversion element, solar cell, and solar cell module

An optical recording medium having excellent light resistance that includes a substrate; and a recording layer which is provided on the substrate directly or on another layer provided on the substrate, wherein the recording layer is capable of recording and/or reading information by irradiating light thereon, the recording layer including a metal complex compound comprising an azo compound having a coupler component with a Meldrum's acid structure and a diazo component with a nitrogen-containing heterocyclic aromatic ring structure, and a metal ion coordinated to the azo compound.

Optical recording medium, optical recording material and metal complex compound

An optical recording medium having excellent light resistance that includes a substrate; and a recording layer which is provided on the substrate directly or on another layer provided on the substrate, wherein the recording layer is capable of recording and/or reading information by irradiating light thereon, the recording layer includes a metal complex compound with an azo compound having a coupler component with indandione and a diazo component with a nitrogen-containing heterocyclic aromatic ring structure, and a nickel or cobalt ion coordinated to the azo compound.

The azo-metal chelate dye to which the present invention is applied is a compound formed as follows: for example, 1,3,4-thiadiazole ring is selected as the diazo component; the diazo component is combined with a coupler component having condensed rings including a fluorine-substituted alkylsulfonylamino group and an amino group, to form an azo dye compound; and the azo dye compound forms chelate bonds with at least one metal selected from the group consisting of Co, Ni, Cu and Pd. Here, two absorption bands (OD1 and OD2) are seen in the absorption spectrum, which is measured in a range of 400 to 800 nm wavelengths. The azo-metal chelate dye is characterized in that the optical density ratio (OD2/OD1) of the two absorption bands is greater than 1.25. By using this azo-metal chelate dye, an optical recording medium capable of high-speed recording is provided.

Azo-metal chelate dye and optical recording medium

The azo-metal chelate dye to which the present invention is applied is a compound formed as follows: for example, 1,3,4-thiadiazole ring is selected as the diazo component; the diazo component is combined with a coupler component having condensed rings including a fluorine-substituted alkylsulfonylamino group and an amino group, to form an azo dye compound; and the azo dye compound forms chelate bonds with at least one metal selected from the group consisting of Co, Ni, Cu and Pd. Here, two absorption bands (ODand OD) are seen in the absorption spectrum, which is measured in a range of 400 to 800 nm wavelengths. The azo-metal chelate dye is characterized in that the optical density ratio (OD/OD) of the two absorption bands is greater than 1.25. By using this azo-metal chelate dye, an optical recording medium capable of high-speed recording is provided.

The azo-metal chelate dye of the present invention is formed, for example, from zinc (divalent) as a center metal ion and an azo compound bonded with a coupler component having an amino group and a fluorine-substituted alkylsulfonylamino group subjected to condensed ring-formation to have a 1,3,4-thiazole ring as a diazo component.

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Tokyo, Japan

Kenichi Satake