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    PRODUCTION OF EMULSION POLYMER AND FILM USING THE SAME
    61.
    发明专利
    PRODUCTION OF EMULSION POLYMER AND FILM USING THE SAME 失效

    公开(公告)号：JPH05112605A

    公开(公告)日：1993-05-07

    申请号：JP27552791

    申请日：1991-10-23

    Applicant: KAO CORP

    Inventor： II ATSUHIKO ,  SAWADA MICHITAKA ,  NAKAMURA KOICHI

    IPC: C08F2/24 ,  C08F12/00 ,  C08F18/14 ,  C08F20/10 ,  C08F26/00 ,  C08F120/04 ,  C08F212/06 ,  C08F212/36 ,  C08F218/02 ,  C08F218/08 ,  C08F218/14 ,  C08F220/06 ,  C08F220/20 ,  C08F226/06 ,  C08F236/00 ,  C08J5/18 ,  C08L29/00 ,  C08L29/04

    Abstract: PURPOSE:To obtain an emulsion polymer, useful as coatings, etc., and capable of providing films excellent in strength by carrying out emulsion copolymerization of an ethylenically unsaturated monomer with a polyfunctional ethylenically unsaturated monomer using a specific emulsion dispersion stabilizer. CONSTITUTION:A radical polymerizable ethylenically unsaturated monomer (e.g. ethylene or styrene) or a diene-based monomer (e.g. butadiene or isoprene) and a polyfunctional ethylenically unsaturated monomer (e.g. divinylbenzene or tetraallyloxyethane) are subjected to emulsion copolymerization using a PVA-based polymer having mercapto groups at the terminals as an emulsion dispersion stabilizer. The PVA-based polymer having the mercapto groups at the terminals is preferably obtained by polymerizing a vinyl monomer consisting essentially of monomers of vinyl esters in the presence of a thiolic acid and then saponifying the produced PVA-based polymer. Thiolacetic acid is preferred as the thiolic acid and vinyl acetate is preferred as the vinyl ester monomers.

    SUBSTRATE MATERIAL FOR CELL CULTURE
    62.
    发明专利
    SUBSTRATE MATERIAL FOR CELL CULTURE 失效

    公开(公告)号：JPH0538278A

    公开(公告)日：1993-02-19

    申请号：JP19914091

    申请日：1991-08-08

    Applicant: KAO CORP ,  TOKYO JIYOSHI IKA UNIV

    Inventor： SAKAI HIDEAKI ,  NAKAMURA KOICHI ,  OKANO MITSUO ,  YAMADA NORIKO ,  SAKURAI YASUHISA

    IPC: C12M1/00 ,  C12N5/07 ,  C12N5/071

    Abstract: PURPOSE:To obtain the title material capable of easily releasing and recovering cultured cells through merely changing the ambient temperature with impurity contamination prevented while maintaining cell performance by successively coating a substrate surface with a cell-attaching substance layer and a specific polymer layer. CONSTITUTION:The objective material can be obtained by coating (A) a substrate surface with (B) a cell-attaching substance (e.g. oligosaccharide, gelatin) followed by (C) a homopolymer or copolymer with the critical dissolving temperature to water of 0-80 deg.C. Sand homopolymer or copolymer can be obtained by (co)polymerization of monomer(s) such as (meth)acrylamide and/or N- acryloylpyrrolidine.

    PHOTOSENSITIVE RESIN COMPOSITION AND PHOTOSENSITIVE PLANOGRAPHIC PLATE
    63.
    发明专利
    PHOTOSENSITIVE RESIN COMPOSITION AND PHOTOSENSITIVE PLANOGRAPHIC PLATE 失效

    公开(公告)号：JPH0478857A

    公开(公告)日：1992-03-12

    申请号：JP19223390

    申请日：1990-07-20

    Applicant: KAO CORP

    Inventor： MINAMI TAKAHIDE ,  II ATSUHIKO ,  NAKAMURA KOICHI

    IPC: G03F7/027 ,  G03F7/028 ,  G03F7/38

    Abstract: PURPOSE:To obtain the photosensitive resin composition high in sensitivity and not causing fogging by using a specified ketal or thioketal type compound. CONSTITUTION:This composition comprises a compound having an ethylenically unsaturated bond polymerizable by free radicals, a compound (A) to be allowed to release an acid by active radiation, such as diphenyliodonium iodide, a visible light sensitizer (B), such as Phthalocyanine Blue, and the ketal or thioketal type compound (C) represented by formula I in which X is O or S; at least one of R and R is aryl and the other is alkyl; and n is 2 or 3, and this compound can be embodied by 2,2-diphenyl-1,3-dioxacycloheptane and the like.

    PRODUCTION OF AQUEOUS SOLUTION OR SLURRY OF METAL SALT OF MALEIC ANHYDRIDE COPOLYMER
    64.
    发明专利
    PRODUCTION OF AQUEOUS SOLUTION OR SLURRY OF METAL SALT OF MALEIC ANHYDRIDE COPOLYMER 失效

    公开(公告)号：JPH0457811A

    公开(公告)日：1992-02-25

    申请号：JP16889090

    申请日：1990-06-27

    Applicant: KAO CORP

    Inventor： MUROI YOSHIYUKI ,  HAMADA HIROSHI ,  KATADA NAOKI ,  NAKAMURA KOICHI

    IPC: C08F2/06 ,  C08F2/04 ,  C08F6/06 ,  C08F6/10 ,  C08F8/42 ,  C08F8/44 ,  C08F20/02 ,  C08F220/04 ,  C08F222/06

    Abstract: PURPOSE:To produce easily and inexpensively an aqueous solution or slurry of a metal salt of a maleic anhydride copolymer by copolymerizing maleic anhydride with a copolymerizable vinyl monomer in a specified organic solvent, adding a metal (hydr)oxide and water to reaction mixture, and reaction them under heating while distilling off the organic solvent. CONSTITUTION:Maleic anhydride is copolymerized with at least one vinyl monomer copolymerizable therewith (e.g. styrene) in an organic solvent which can dissolve these monmers but cannot dissolve the obtained copolymer (e.g. toluene). A metal hydroxide or a metal oxide (e.g. ZnO) and water are added to the obtained copolymer slurry and reacted under heating while distilling off the organic solvent. In this way, an aqueous solution or slurry of a metal salt of a maleic anhydride copolymer is obtained. The obtained aqueous solution or slurry can desirably be used as an adhesive, a nonburning coating agent, a cement dispersing agent or the like.

    ELECTROPHOTOGRAPHIC SENSITIVE BODY
    66.
    发明专利
    ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效

    公开(公告)号：JPS63141070A

    公开(公告)日：1988-06-13

    申请号：JP28814386

    申请日：1986-12-03

    Applicant: KAO CORP

    Inventor： MATSUSE TAKASHI ,  YAMAZAKI HARUMASA ,  NAKAMURA KOICHI ,  SHIBANO HIROSHI

    IPC: G03G5/06

    Abstract: PURPOSE:To obtain an electrophotographic sensitive body having sufficient photoconductivity to semiconductor laser beams and to enable an electric charge generating material to be maintained in a stably dispersed state in a charge generating layer by incorporating a silicon-naphthalocyanine having a specified structure in the charge generating layer. CONSTITUTION:The electrophotographic sensitive body is composed of a conductive substrate, and both the charge generating layer and a charge transfer layer laminated on the substrate. The charge generating layer contains the silicon-naphthalocyanine compound represented by the formula shown on the right, each of R1 and R2 being branched >=4C alkyl, alkenyl, or cycloalkyl, optionally same or different, such as bis(2-ethylhexyloxy)(2,3-naphthalocynate)- silicon, in a compound to binder weight ratio of 80:20-20:80, preferably, 70:30-30:70. It is preferred to form the charge generating layer on the conductive substrate and on this layer the charge transfer layer.

    OPTICAL RECORDING MEDIUM
    67.
    发明专利
    OPTICAL RECORDING MEDIUM 失效

    公开(公告)号：JPS63119036A

    公开(公告)日：1988-05-23

    申请号：JP26465486

    申请日：1986-11-06

    Applicant: KAO CORP

    Inventor： NAKAMURA KOICHI ,  SHIBANO HIROSHI ,  MORIKAWA KENJI ,  YAMAZAKI HARUMASA

    IPC: G11B7/244 ,  B41M5/26 ,  G11B7/24

    Abstract: PURPOSE:To provide the titled medium which has good stability, permits easy formation and does not generate deterioration in information at the time of recording and reproducing by consisting said medium of a transparent base and a recording layer contg. a silicon naphthalocyanine dye and providing a half mirror layer between the base and the recording layer. CONSTITUTION:This medium consists of the transparent base and the recording layer contg. the silicon naphthalocyanine dye expressed by formula (I) and is provided with the half mirror layer having >=10% reflectivity and >=50% transmissivity between the base and the recording layer. In formula, R1-R4 denote a hydrogen atom, etc., a-d denote 1-4 integer, R5, R6 are an alkyl group of 4-42C, etc. The silicon naphthalocyanine compd. expressed by formula (I) is exemplified by bis-n-octyloxy-(2,3-naphthalocyanate)silicon, etc.

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