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    PRODUCTION OF SQUARYLIUM PIGMENT
    2.
    发明专利
    PRODUCTION OF SQUARYLIUM PIGMENT 失效

    公开(公告)号：JPH01230674A

    公开(公告)日：1989-09-14

    申请号：JP5912688

    申请日：1988-03-11

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： TANAKA MOTOO ,  SEKIGUCHI TATSUO ,  KAWABATA KOJIRO ,  NAKAMURA TAKAYOSHI ,  TACHIBANA HIROAKI ,  MANDA EIICHIRO ,  YASUMOTO MASAHIKO ,  SHIBUYA ISAO

    IPC: B41M5/26 ,  C09B23/00 ,  C09B57/00 ,  G03G5/06

    Abstract: PURPOSE:To obtain a high-purity squarylium pigment suitable as, e.g., a recording material for optical discs is high yields, by condensing a specified colorant intermediate through dehydration with squaric acid in an organic solvent under a pressure higher than a specified value. CONSTITUTION:A colorant intermediate of the general formula R-H [wherein R is formula I, II, III or IV, R is C18H37, R is H, CH3 or Cl, R is CH3, R is H or CH3, R is H or Cl, X is C(CH3)2, Se or S, and Y is p- chlorobenzenesulfonic acid], e.g., (2,3,3-trimethyl-1-octadecyl-indolinium) p- chlorobenzenesulfonate, is condensed through dehydration with squaric acid in an organic solvent (e.g., methanol) under a high pressure >=1000kg/cm to obtain a squarylium colorant of formula V.

    LIGHT INFORMATION RECORDING COMPOSITION
    3.
    发明专利
    LIGHT INFORMATION RECORDING COMPOSITION 失效

    公开(公告)号：JPS61201239A

    公开(公告)日：1986-09-05

    申请号：JP4249385

    申请日：1985-03-04

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： YABE AKIRA ,  OOUCHI AKIHIKO ,  KAWABATA KOJIRO ,  TANAKA MOTOO

    IPC: B41M5/26 ,  G03C1/73 ,  G03F7/027 ,  G11B7/244

    Abstract: PURPOSE:To enable recording of information in ultrahigh density in a molecular level by using cinnamylideneacetate combined with a hydrocarbon specified in chain length as a light information recording compsn. CONSTITUTION:The cinnamylideneacetic acid combined with a long-chain hydro carbon represented by the formula shown here can be easily synthesized by reacting p-alkyl or p-alkoxybenzaldehyde with 3-ethoxycarbonylallyltri phenylphosphonium halide, and hydrolyzing the resulting cinnamylideneacetic acid deriv. ester. Built-up molecular films optional in thickness can be prepared on a glass or metal base from a monomolecular film by using a Langmuir- Blodgett's device for building up monomolecular films. the prepared ultrathin films has the strong absorption max. in 260-360nm, and when it is irradiated with UV rays in this range, the new absorption max. appears near 250nm wave length on the shorter wavelength side, and vice versa, thus permitting absorption spectra to be changed reversible by using 2 kinds of lights different in wave length.

    ORGANIC HYPER THIN FILM OF INCLUSION COMPOUND OF DYE AND CYCLODEXTRIN DERIVATIVE AND ITS PRODUCTION
    4.
    发明专利
    ORGANIC HYPER THIN FILM OF INCLUSION COMPOUND OF DYE AND CYCLODEXTRIN DERIVATIVE AND ITS PRODUCTION 失效

    公开(公告)号：JPS63144329A

    公开(公告)日：1988-06-16

    申请号：JP29286186

    申请日：1986-12-09

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： KAWABATA KOJIRO ,  MATSUMOTO MUTSUYOSHI ,  TANAKA MOTOO ,  ISHIZUKA YASUKO ,  NAKANISHI HIROSHI ,  OOGAKI WAICHIROU

    IPC: C09B67/08 ,  C09B67/00 ,  G02F1/35 ,  G02F1/355 ,  G02F1/361 ,  G03C1/72

    Abstract: PURPOSE:To obtain the hyper thin film composed of an inclusion compd. of cyclodextrin and an org. molecule by incorporating a specific cyclodextrin derivative to the titled film. CONSTITUTION:The hyper thin film of the inclusion compd. of the cyclodextrin and the dye is formed by synthesizing a molecule which contains the cyclodextrin part as a hydrophilic group and a long chain hydrocarbon group as a hydrophobic group by substituting the primary alcohol part of the cyclodextrin with a functional group contg. the long chain hydrocarbon group, and by mixing an azo dye and said molecule in an org. solvent, and by spreading the obtd. mixture on the surface of water to form a stable monomolecular film composed of the cyclodextrin and the dye and the inclusion compd. thereof, and subsequently laminating said monomolecular film on a substrate. The hydrophobic group and the hydrophilic group which have an appropriate molecular volume and strength, and the balance thereof are important as the cyclodextrin derivative in order to form the stable monomolecular film on the surface of water. Said cyclodextrin derivative is shown by formula I wherein R is >=8C long chain hydrocarbon group, (n) is an integer of >=6.

    CONTROL OF ASSOCIATED STATE OF ORGANIC DYE USING MAGNETIC FIELD
    5.
    发明专利
    CONTROL OF ASSOCIATED STATE OF ORGANIC DYE USING MAGNETIC FIELD 失效

    公开(公告)号：JPS63139324A

    公开(公告)日：1988-06-11

    申请号：JP28753086

    申请日：1986-12-02

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： KAWABATA KOJIRO ,  SEKIGUCHI TATSUO ,  TANAKA MOTOO ,  NAKAMURA TAKAYOSHI ,  MATSUMOTO MUTSUYOSHI ,  MANDA EIICHIRO

    IPC: G02F1/19 ,  B05D1/20 ,  B05D3/14

    Abstract: PURPOSE:To prompt the formation of J associated body and to transform a part of the area of thin film selectively to associate by controlling the associated state of org. dye molecules in Langmuir-Blodgett's film which is a typical example of org. ultra thin film by the impression of magnetic field. CONSTITUTION:A magnetic field is impressed to associated org. dye molecules in Langmuir-Blodgett's film which is a typical example of org. ultra thin film to prompt the formation of J associated body. An org. dye having the structure for forming the J associated body is used as the org. dye molecule. Suitable org. dye molecule is a molecule of cyanine dye, merocyanine dye, or squarylium dye. Further, the magnetic field to be impressed to the associated org. dye molecules is regulated to >=100 gauss. Thus, the formation of J associated body is prompted and selective transformation of a part of the area of thin film to associate has become possible.

    CYCLODEXTRIN DERIVATIVE, ULTRATHIN ORGANIC FILM PREPARED THEREFROM AND ITS PRODUCTION
    7.
    发明专利
    CYCLODEXTRIN DERIVATIVE, ULTRATHIN ORGANIC FILM PREPARED THEREFROM AND ITS PRODUCTION 失效

    公开(公告)号：JPS63117003A

    公开(公告)日：1988-05-21

    申请号：JP26164286

    申请日：1986-10-31

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： OOGAKI WAICHIROU ,  KAWABATA KOJIRO ,  MATSUMOTO MUTSUYOSHI ,  TANAKA MOTOO

    IPC: C08B37/16 ,  B01D71/08 ,  B05D1/20

    Abstract: PURPOSE:To obtain an ultrathin organic film, by using a cyclodextrin derivative having a specified structural formula. CONSTITUTION:A cyclodextrin derivative represented by formula 1 (wherein R is a 4C or higher alkyl, X is a functional group bondable to at least two atoms, Y is hydrogen, an acyl or an ether group and n is an integer >=6). An ultrathin organic film can be prepared from this derivative by the following process. Namely, a thin film of said cyclodextrin derivative is formed on the surface of an aqueous solution and a solid substrate is allowed to pass through this film to deposit the cyclodextrin derivative thereon. Examples of said solid substrate include an ordinary glass plate, those formed by laminating monomolecular membranes of, e.g., stearic acid or arachic acid thereon, quartz, aluminum, calcium fluoride, etc.

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