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公开(公告)号：JPH01251344A
公开(公告)日：1989-10-06
申请号：JP7778588
申请日：1988-03-30
Applicant: AGENCY IND SCIENCE TECHN
Inventor： ICHIMURA KUNIHIRO , SUZUKI YASUZO , SEKI TAKAHIRO , SAKURAGI MASAKO , TAMAOKI TAKASHI , AOKI ISATAKA
Abstract: PURPOSE:To obviate the degradation of definition occurring in flowability with lapse of time by providing a liquid crystal layer contg. a dichromatic dye via a molecular layer of a compd. which is reversibly changed in structure by light on a transparent substrate. CONSTITUTION:This recording element has the structure in which a liquid crystal layer 3 is sandwiched between two sheets of the substrates 1 having the monomolecular layers 2 of a photochromic compd. The photochromic compd. causes a change in the structure when a part A thereof is irradiated by light and, therefore, the perpendicular arrangement of this part is broken and the liquid crystal attains the arrangement in parallel with the surface. The anisotropy of the dichromatic dye changes accordingly. Although the part B which is not irradiated by the light is pale in color, the part A irradiated by the light is changed to a dark color and, therefore, the reading of the light information by the transmittance of the light of the wavelength absorbed by the dye is executed. Since the light of the wavelength which does not generate photochromism by selection of the dye, the breakage of the information is obviated. The degradation of the definition by the liquid crystal having flowability with time is thereby obviated.
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公开(公告)号：JPS61203131A
公开(公告)日：1986-09-09
申请号：JP4249085
申请日：1985-03-04
Applicant: AGENCY IND SCIENCE TECHN
Inventor： SAKURAGI MASAKO , ICHIMURA KUNIHIRO
Abstract: PURPOSE:A chelate resin which can adsorb and recover a trivial amount of metallic ions and is resistant to hydrolysis, comprising a polyethyleneimine polymer compound in which the nitrogen atoms have specified 2-hydroxybenzoyl group substituents. CONSTITUTION:A chelate resin comprising a polyethyleneimine polymer compound in which the nitrogen atoms have 2-hydroxybenzoyl group substituents of formula I (wherein X is H, hydroxyl or nitro). This resin can be obtained by suspending a crosslinked polyethyleneimine polymer compound in a solvent (preferably, dioxane or tetrahydrofuran) and reacting the suspended polymer with an active 2-hydroxybenzoic acid derivative of formula II (wherein X is H, hydroxyl or nitro and Y is chlorine, azido, phenyl or substituted phenyl) (at about 40-100 deg.C for about 1-48hr).
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公开(公告)号：JPH04366834A
公开(公告)日：1992-12-18
申请号：JP16879591
申请日：1991-06-13
Applicant: AGENCY IND SCIENCE TECHN
Inventor： KAWANISHI YUJI , SEKI TAKAHIRO , SAKURAGI MASAKO , TAMAOKI TAKASHI
IPC: G02F1/13 , G02F1/1337 , G03C1/73
Abstract: PURPOSE:To stably selectively and reversibly obtain tristate optical states according to the states of light for irradiation by laminating a high-polymer compd. layer which causes a change in the molecular structure and aggregate structure by the effect of light and a liquid crystal layer on a transparent substrate. CONSTITUTION:A thin film 2 of the high-polymer compd. which causes the change in the aggregate structure reversible by light is provided on the transparent substrate 1 and further, the liquid crystal layer 3 is laminated thereon. The surface thereof is further coated with a substrate 4 in order to prevent dissipation and failure. The liquid crystal has the orientation (planar orientation) inclined with the substrate plane by the effect of the photochromic high-polymer thin film 2. The aggregate structure of the thin film 2 for generating a partial structure in the molecular structure of the photochromic residues changes and the liquid crystal has the direction perpendicular to the surface (homeotropic orientation) is this element is irradiated with light for a short period of time. Further, the conversion rate of the photochromic residues increases if the photoirradiation is continued. The planar orientation having the angle of inclination different from the angle of inclination of an initial period is attained by the effect of the molecular structure after the conversion.
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公开(公告)号：JPH01251345A
公开(公告)日：1989-10-06
申请号：JP7778688
申请日：1988-03-30
Applicant: AGENCY IND SCIENCE TECHN
Inventor： ICHIMURA KUNIHIRO , SUZUKI YASUZO , SEKI TAKAHIRO , SAKURAGI MASAKO , TAMAOKI TAKASHI , AOKI ISATAKA
Abstract: PURPOSE:To eliminate the lowering of resolution with lapse of time due to fluidity by providing a liquid crystal layer through a molecular layer of compound which makes a structural change reversibly by light on a transparent substrate whose surface is finely deformed. CONSTITUTION:The title element is constructed to sandwich a liquid crystal layer 3 between two substrates 1 which have monomolecular layer 2 of the photochromic compound and whose surfaces are finely deformed. When light is projected on one part A, the photochromic compound makes the structural change, therefore, the vertical arrangement of the part is destroyed and liquid crystal makes an arrangement parallel to the surface. Consequently, when this photo recording element is put between two polarizers whose polarizing axes are perpendicular to each other, parts B on which the light is not projected are dark, however, the part A on which the light is projected becomes bright and a clear picture can be obtained. Since the polarization of a wavelength which does not generate photochromism can be used for reading information, the information is not destroyed. Thus, the lowering of the resolution with lapse of time due to the liquid crystal having the fluidity is eliminated.
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公开(公告)号：JPS63223084A
公开(公告)日：1988-09-16
申请号：JP5615487
申请日：1987-03-11
Applicant: AGENCY IND SCIENCE TECHN
Inventor： TAMAOKI TAKASHI , OHASHI SHINICHI , SAKURAGI MASAKO , ICHIMURA KUNIHIRO , ARIMA IKUKO
Abstract: PURPOSE:To obtain a photochromic composition having excellent light durability, coloring by ultraviolet light, decoloring by irradiation with visible light ray, by including a specific spirobenzopyran compound in a specific (modified) gamma- cyclodextrin. CONSTITUTION:A spirobenzopyran compound shown by formula I (R1 is H, halogen, methyl or methoxy; R2 is nitro or halogen) is included in (B) a (modified) gamma-cyclodextrin shown by formula II (R1 is H, methyl or naphthyl group- containing residue; R2 and R3 are H or methyl; n is 8) to give the aimed photochromic composition.
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Patent Agency Ranking
公开(公告)号：JPH03174488A
公开(公告)日：1991-07-29
申请号：JP31464589
申请日：1989-12-04
Applicant: AGENCY IND SCIENCE TECHN
Inventor： TAMAOKI TAKASHI , SAKURAGI MASAKO , KAWANISHI YUJI , SEKI TAKAHIRO , YAMAGUCHI TAKEO
IPC: C07D498/10 , C09K9/02
Abstract: PURPOSE:To produce a photochromic material useful as an optical information recording material wherein both the colorless and colored form are stably retained for a long period of time by dispersing a spirooxazine having hydrogen bonding performance in a proton donating medium. CONSTITUTION:A sprirooxazine having hydrogen bonding performance, for example, 5-methoxy-5'-piperidinomethyl-1',3,3-trimethylspiro[indoline-2,3'-[3H] naphtho[2,1-b] [1,4]oxazine, is dispersed in a proton donating medium such as an aqueous acetone solution to obtain a photochromic material.
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公开(公告)号：JPS63243102A
公开(公告)日：1988-10-11
申请号：JP7679487
申请日：1987-03-30
Applicant: AGENCY IND SCIENCE TECHN
Inventor： ICHIMURA KUNIHIRO , SAKURAGI MASAKO , YASUIKE MADOKA
Abstract: PURPOSE:To obtain a composition suitable as an image forming material, having high sensitivity to light rays of long wavelength, by using a combination of a tetrabenzoporphyrin of a specific structure or a metallic complex thereof and an electron accepting radical generator as a photopolymerization initiator. CONSTITUTION:In a composition containing a compound (e.g. acrylic acid or 1,3-propanediol) containing one or more polymerizable ethylenic unsaturated bonds and a photopolymerization initiator, a combination of (A) a tetrabenzoporphyrin (e.g. having one or more meso-positions replaced with phenyl groups) or a metallic complex thereof and (B) an electron acceptable radical generator (preferably >=-1.5eV reduction potential) such as diaryl iodonium salt is used as the photopolymerization initiator.
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公开(公告)号：JPS6383087A
公开(公告)日：1988-04-13
申请号：JP22666486
申请日：1986-09-25
Applicant: AGENCY IND SCIENCE TECHN
Inventor： ICHIMURA KUNIHIRO , MORII NAOYUKI , SAKURAGI MASAKO , ONO OSAMU , YASUIKE MADOKA
IPC: C07D487/22 , G03G5/06
Abstract: PURPOSE:To produce the titled compound having excellent solubility and useful as a laser beam sensitizer from an industrially readily available phthalimide compound as a raw material, by reacting the phthalimide compound (metal salt) with a specific carboxylic acid metal salt. CONSTITUTION:(A) A phthalimide compound of formula I (X is H or alkali metal; A and B are H, 1-5C alkyl, cyano or alkoxycarbonyl or A and B together form CH=CH which constitutes a part of condensed benzene ring) or a metal salt thereof is reacted with (B) a carboxylic acid metal salt of formula (RCH2COO)2M [R is H, 1-10C alkyl, (substituted) phenyl, naphthyl, aralkyl or pyridyl; M is bivalent metal] (e.g. zinc acetate) to provide the objective compound of formula II (R1-R4 are R).
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公开(公告)号：JPS6248725A
公开(公告)日：1987-03-03
申请号：JP18708085
申请日：1985-08-26
Applicant: AGENCY IND SCIENCE TECHN
Inventor： ICHIMURA KUNIHIRO , HIROTSU TAKAHIRO , SAKURAGI MASAKO , MORII NAOYUKI , SUDA MASAO
Abstract: PURPOSE:To obtain the titled resin suitable for the adsorption and recovery of trace metallic ion dissolved in seawater, by reacting a specific polyethylenimine derivative with hydroxylamine. CONSTITUTION:The objective resin having the hydroxamic acid residue of formula on the side chain can be produced by (1) reacting (A) a crosslinked polyethylenimine polymer compound obtained e.g. by the graft-polymerization of polyethylenimine to crosslinked polystyrene, etc., with (B) an acrylic acid ester e.g. in a dispersing medium (e.g. water) to obtain a polyethylenimine derivative having propionic acid ester residue on the side chain, (2) suspending the product in a solvent containing hydroxylamine and (3) reacting at a temperature between room temperature and the boiling point of the solvent for 1-5 days.
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公开(公告)号：JPH04208289A
公开(公告)日：1992-07-29
申请号：JP33858890
申请日：1990-11-30
Applicant: AGENCY IND SCIENCE TECHN
Inventor： TAMAOKI TAKASHI , ICHIMURA KUNIHIRO , SAKURAGI MASAKO , KAWANISHI YUJI , SEKI TAKAHIRO , OKUDAIRA TSUGIO
Abstract: NEW MATERIAL:The photochromic compound of formula I (X is methylene or azomethine). EXAMPLE:The compound of formula II. USE:A photosensitive material for laser light, a light-intensity controlling material, a chemical actinometer, a decorative material and an optical recording and memorizing material. PREPARATION:The exemplified compound can be produced by reacting 1- nitroso-2,3-dihydroxynaphthalene with 1,3,3-trimethyl-2-methyleneindolenine.
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