Kyowa Hakko Kogyo Co., Ltd.

Kyowa Yuka Co., Ltd.

Ricoh Company, Ltd.

Other

Kyowa Hakko Chemical Co., Ltd.

Kyowa Hakko Bio Co., Ltd.

Yamamoto Kogaku Ltd.

Ikuo Shimizu

Hiroshi Toyoda

Motoharu Kinugasa

Tsutomu Satoh

Yukiyoshi Ito

Tsuguo Yamaoka

Masanori Ikuta

Tatsuya Tomura

Shiho Yamada

Shoshiro Matsushita

Soh Noguchi

Tsutomu Sato

Yasunobu Ueno

Katsuhiro Ito

Kenichi Koseki

Tohru Yashiro

Shinichiro Jimbo

Iwao Hotta

Mitsuharu Obara

Kazuyasu Osada

Kenji Mutoh

Izumi Itani

Tomomi Ishimi

Tatsuo Mikami

Kyoko Katagi

Katsumi Ukai

Yuki Nakamura

Noboru Sasa

Yasuhiro Higashi

Takeshi Iwasaki

Yoshihisa Ishiba

Kazuko Mabuchi

Oritoshi Murata

Asako Tanaka

Junzo Yamano

Hirotaka Kinoshita

Yukitoshi Fukuda

Asako Okajima

Takeshi Usami

Hitoshi Kawato

Tomoya Takahashi

The present invention relates to an optical recording medium containing a first substrate, a first information layer, an intermediate layer, a second information layer and a second substrate in this order, wherein the first information layer contains a first recording layer disposed on the first substrate and the second information layer contains a reflective layer, a second recording layer containing an organic dye and a protective layer which are disposed on the second substrate in this order; and the second recording layer contains an organic dye which is at least one elected from the group consisting of the specified squarylium metal chelate compounds.

Optical recording medium, recording and reproducing method thereof, and optical recording apparatus

The present invention provides a filter for electronic display devices, comprising a squarylium compound represented by General Formula (I): [wherein X represents a group represented by following Formula (A): (wherein R, R, R, and Rmay be the same or different and each represents a hydrogen atom, a halogen atom and the like; and Rand Rmay be the same or different and each represent a hydrogen atom, an alkyl group optionally having substituent(s) and the like) and the like; and Y represents a group represented by following Formula (C): (wherein Rrepresents a halogen atom, an alkyl group optionally having substituent(s) and the like; and Rrepresents a hydrogen atom, an alkyl group optionally having substituent(s) and the like) and the like, and 'n' represents an integer of 0 to 5].

Filters for electronic display devices

The present invention provides a filter for electronic display devices, comprising a squarylium compound represented by General Formula (I): [wherein Rand Rmay be the same or different and each represents a hydrogen atom, an alkyl group optionally having substituent(s), an aralkyl group optionally having substituent(s), an aryl group optionally having substituent(s), or a heterocyclic group optionally having substituent(s); X represents a group represented by following Formula (A): (wherein Rand Rmay be the same or different and represents a hydrogen atom, an alkyl group optionally having substituent(s), an alkoxy group optionally having substituent(s), an aralkyl group optionally having substituent(s), an aryl group optionally having substituent(s), or a heterocyclic group optionally having substituent(s), wherein Rand Rmay be combined together with the adjacent nitrogen atom thereto form a heterocyclic group optionally having substituent(s))].

The present invention provides oils for cosmetics comprising a dibasic acid diester represented by general formula (I) (wherein R, R, Rand R, which are the same or different, each represent lower alkyl)and excellent in solubility of a long-wave ultraviolet light absorber or the like, and so forth.

Oily ingredient for cosmetic preparation and cosmetic preparation

The invention provides a photopolymerizable composition having a high photosensitivity, which comprises a metal complex of a squarylium compound, a radical generator, and a compound having at least one ethylenically unsaturated double bond. The photopolymerizable composition of the present invention is advantageously used for a visible laser recording material such as a PS (Presensitized Plate) for laser direct plate-making, a dry film resist, a digital proof, a hologram, or the like, a panchromatic sensitive material (e.g., a sensitive material for a color hologram and a sensitive material used for full-color display and containing a photopolymerizable composition in a microcapsule), paints, adhesives, and so on.

Photopolymerizable composition

The present invention provides the following process for production of an ether compound, which is useful for chemical amplification type resist compositions, synthetic intermediates of pharmaceuticals, paints, or the like, with less side reaction and in high yield. A process for producing an ether compound having a group represented by the general formula (II) wherein R, Rand Rmay be the same or different, and represent substituted or unsubstituted alkyl, substituted or unsubstituted aryl or substituted or unsubstituted aralkyl, or Rand Rform cycloalkyl together with an adjacent carbon atom, which comprises allowing a compound having a hydroxyl group (including a carboxyl group) to react with an alkenyl ether represented by the general formula (I) wherein R, Rand Rhave the same significances as defined above, respectively.

Process for producing ether compound

The present invention provides a visible light-sensitive composition which is highly sensitive to a visible light and is useful as an electronic circuit forming material, a lithographic printing material, etc., said visible light-sensitive composition comprising (a) a polymer comprising a repeating unit represented by general formula (I): wherein R, R, and Rare the same or different and each represents substituted or unsubstituted alkyl, substituted or unsubstituted aryl, or substituted or unsubstituted aralkyl, or alternatively Rand Rform cycloalkyl together with the adjacent carbon atom, and Rrepresents lower alkyl, (b) a compound that generates an acid by visible light irradiation and (c) a sensitizing dye.

Composition sensitive to visible light

A filter of an electronic display device provides a clear image, the filter comprising an squarylium compound represent by formula (II): 

Filters of electronic displays

Squarylium-metal chelate compounds as recording materials for optical recording media, and optical recording media using these compounds, which have excellent recording properties, light resistance and storage stability. The squarylium-metal chelate compound is represented by following Structural Formulas (1) and (2): In the formula (1), M represents a metal atom capable of coordinating; 'a', 'b' and &#x201c;c&#x201d; each represents a squarylium dye ligand of formula (2), where &#x201c;a&#x201d; is different from &#x201c;b&#x201d;; and &#x201c;c&#x201d; may be the same as or different from &#x201c;a&#x201d; or &#x201c;b&#x201d;; and &#x201c;m&#x201d; represents 0 or 1. In the formula (2), Rand Rare the same or different and each represents an alkyl group, aralkyl group, aryl group or heterocyclic group, each of which may be substituted; and X represents an aryl group which may be substituted, a heterocyclic group which may be substituted, or Z=CH&#x2014;, wherein Zrepresents a heterocyclic group which may be substituted.

Squarylium-metal chelate compounds and optical recording media

The present invention provides the following process for producing and the like, which enables the production of an ether compound, which is useful for chemical amplification type resist compositions, synthetic intermediates of pharmaceuticals, paints, or the like, with less side reaction and in high yield. A process for producing an ether compound having a group represented by the general formula (II)wherein R, Rand Rmay be the same or different, and represent substituted or unsubstituted alkyl, substituted or unsubstituted aryl or substituted or unsubstituted aralkyl, or Rand Rform cycloalkyl together with an adjacent carbon atom, which comprises allowing a compound having a hydroxyl group (including a carboxyl group) to react with an alkenyl ether represented by the general formula (I)wherein R, Rand Rhave the same significances as defined above, respectively.

An optical recording medium includes a substrate and at least a recording layer deposited on or above the substrate, and the recording layer contains at least one formazan-metal chelate compound containing a formazan compound and a metal component; at least one squarylium-metal chelate compound containing a squarylium compound and a metal component; and at least one diarylamine compound.

Optical recording medium, and method and device using the same

Filters for electronic display device

An optical recording medium having a substrate, and a recording layer provided on the substrate and containing: (a) a formazan metal chelate including a formazan compound and a metal component, (b) a squarylium metal chelate including a squarylium compound and a metal component; and (c) at least one additional dye selected from phthalocyanine compounds and pentamethine cyanine compounds. Alternatively, the recording layer contains (a) a first formazan metal chelate including a first formazan compound and a first metal component and having the maximum absorption wavelength in the range of 500 to 650 nm, (b) a squarylium metal chelate including a squarylium compound and a metal component; and (c) a second formazan metal chelate including a second formazan compound and a second metal component and having the maximum absorption wavelength different from that of the first formazan metal chelate and in the range of 650 to 750 nm.

Optical recording medium, optical recording method and optical recording device

Metal complex type squarylium compounds and optical recording media made by using the same

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Yokkaichi, Japan

Ikuo Shimizu