Patents Assigned to Dai Nippon Toryo Co., Ltd.
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Patent number: 4138529Abstract: A complex halide phosphor represented by the following composition formula and an X-ray image converter using the same:(Me.sub.1-f,Mg.sub.f )F.sub.2.aMe' X.sub.2.bKX'.cMe" SO.sub.4 :dEu.sup.2+,eTb.sup.3+wherein Me, Me' and Me" each represents at least one of the alkaline earth metals of the group consisting of barium, strontium and calcium; X and X' each represents at least one of chlorine and bromine; and a, b, c, d, e and f are numbers defined by one of the following five combinations:1. 0.80.ltoreq.a.sub.1 .ltoreq.1.50, 0.10.ltoreq.b.sub.1 .ltoreq.1.50, c.sub.1 =0, 0.001.ltoreq.d.sub.1 .ltoreq.0.20, e.sub.1 =0 and f.sub.1 =0.2. 0.30.ltoreq.a.sub.2 .ltoreq.1.50, 0.10.ltoreq.b.sub.2 .ltoreq.2.00, 0.01.ltoreq.c.sub.2 .ltoreq.1.00, 0.001.ltoreq.d.sub.2 .ltoreq.0.20, e.sub.2 =0 and f.sub.2 =0.3. a.sub.3 =1, b.sub.3 =0, c.sub.3 =0, 0.01.ltoreq.d.sub.3 .ltoreq.0.10, 0<e.sub.3 .ltoreq.0.05 and f.sub.3 =0.4. a.sub.4 =1, b.sub.4 =0, c.sub.4 =0, 0.001.ltoreq.d.sub.4 .ltoreq.0.20, e.sub.4 =0 and 0<f.sub.4 .Type: GrantFiled: June 16, 1977Date of Patent: February 6, 1979Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Etsuo Mori, Keiji Shimiya, Norio Miura, Yujiro Suzuki
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Patent number: 4137349Abstract: The present invention relates to a process for forming a multi-layer coating including at least two coating layers by performing the oven drying step at one time, which comprises applying a slurry paint comprising synthetic resin particles dispersed in an aqueous medium, to an undried coating which is in the non-fluid state but is not completely dried.Type: GrantFiled: December 20, 1976Date of Patent: January 30, 1979Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Takao Sakakibara, Haruhiko Okazaki
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Patent number: 4128498Abstract: A divalent europium activated strontium beryllium chlorosilicate phosphor represented by the formulaSr.sub.4-x-y Be.sub.x Eu.sup.2+.sub.y Si.sub.3 O.sub.8 Cl.sub.4wherein x is a number within the range of 0<x.ltoreq.1.5 and y is a number within the range of 0.001.ltoreq.y.ltoreq.0.50.Type: GrantFiled: March 28, 1978Date of Patent: December 5, 1978Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Takashi Hase, Masatake Yoshikawa, Haruyuki Takanashi
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Patent number: 4122055Abstract: The present invention relates to an aqueous dispersion type thermosetting coating composition consisting essentially of a homogeneous mixture of an aqueous medium, a powder of a thermosetting resin having an acid value of 5 to 30, a carboxyl group-containing organic polymeric thickener, and an organic amine and/or an alkali metal hydroxide.Type: GrantFiled: December 16, 1976Date of Patent: October 24, 1978Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Hideyoshi Tugukuni, Masafumi Kano, Yoshihiko Nishimura
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Patent number: 4119562Abstract: Fluorescent compositions which contain zinc oxide and one phosphor selected from the group hereinafter defined in a weight ratio within the range of 1/9 to 9/1, and fluorescent display devices having said fluorescent compositions in the form of a fluorescent screen, which can emit green, blue or red light under low-velocity electron excitation, said group consisting of a copper and aluminium activated zinc cadmium sulfide phosphor [(Zn.sub.1-x, Cd.sub.x)S:Cu, Al, wherein 0.ltoreq.x.ltoreq.0.1], a cerium activated yttrium aluminium gallium oxide phosphor [Y.sub.3 (Al.sub.1-y, Ga.sub.y).sub.5 O.sub.12 :Ce, wherein 0.ltoreq.y.ltoreq.0.5], a manganese activated zinc silicate phosphor (Zn.sub.2 SiO.sub.4 :Mn), a terbium activated yttrium lanthanum oxysulfide phosphor [(Y.sub.1-z, La.sub.z).sub.2 O.sub.2 S:Tb, wherein 0.ltoreq.z.ltoreq.1], a europium activated strontium gallium sulfide phosphor (SrGa.sub.2 S.sub.4 :Eu.sup.Type: GrantFiled: January 19, 1977Date of Patent: October 10, 1978Assignee: Dai Nippon Toryo Co. Ltd.Inventors: Akiyasu Kagami, Takashi Hase, Yoshiyuki Mimura, Kinichiro Narita, Minoru Hiraki
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Patent number: 4116864Abstract: Fluorescent compositions which contain zinc oxide and one phosphor selected from the group hereinafter defined in a weight ratio within the range of 1/9 to 9/1, and fluorescent display devices having said fluorescent compositions in the form of a fluorescent screen, which can emit green, blue or red light under low-velocity electron excitation, said group consisting of a copper and aluminium activated zinc cadmium sulfide phosphor [(Zn.sub.1-x, Cd.sub.x)S:Cu, Al, wherein 0.ltoreq.x.ltoreq.0.1], a cerium activated yttrium aluminium gallium oxide phosphor [Y.sub.3 (Al.sub.1-y, Ga.sub.y).sub.5 O.sub.12 :Ce, wherein 0.ltoreq.y.ltoreq.0.5], a manganese activated zinc silicate phosphor (Zn.sub.2 SiO.sub.4 :Mn), a terbium activated yttrium lanthanum oxysulfide phosphor [(Y.sub.1-z, La.sub.z).sub.2 O.sub.2 S: Tb, wherein 0.ltoreq.z.ltoreq.1], a europium activated strontium gallium sulfide phosphor (SrGa.sub.2 S.sub.4 :Eu.sup.Type: GrantFiled: January 19, 1977Date of Patent: September 26, 1978Assignee: Dai Nippon Toryo Co. Ltd.Inventors: Akiyasu Kagami, Takashi Hase, Yoshiyuki Mimura, Kinichiro Narita, Minoru Hiraki
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Patent number: 4113917Abstract: This invention relates to a powdery coating composition having excellent anti-caking ability, which comprises polymer particles having an average particle size of 0.5 to 200.mu. composed of a polymer having a softening point not exceeding 90.degree. C. as a core component and a polymer having a softening point of at least 100.degree. C. as an outer component covering said core component, and to a process for the preparation of such powdery coating composition.Type: GrantFiled: May 5, 1976Date of Patent: September 12, 1978Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Hideyoshi Tugukuni, Masafumi Kano
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Patent number: 4111884Abstract: The present invention relates to an anticorrosion primer coating composition comprising (i) a polyvinyl butyral resin, (ii) a mixture of a borate compound and a molybdate compound or a polyphosphate compound, and (iii) phosphoric acid.Type: GrantFiled: April 6, 1977Date of Patent: September 5, 1978Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Katsuji Takase, Toshimoto Tsuji, Jun-ichi Fukuda, Yasuchika Hiyamori
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Patent number: 4109152Abstract: An X-ray intensifying screen having a high speed and capable of providing good image quality superior in sharpness, granularity and contrast comprising a support having formed thereon a fluorescent layer composed of a complex halide phosphor represented by the composition formula shown below and having further formed on the fluorescent layer another fluorescent layer composed of a calcium tungstate phosphor:(Me.sub.1-f, Mg.sub.f)F.sub.2 .multidot.aMe'X.sub.2 .multidot.bKX'.multidot.cMe"SO.sub.4 :dEu.sup.2+,eTb.sup.3+wherein Me, Me' and Me" each represents at least one of the alkaline earth metals of the group consisting of barium, strontium and calcium; X and X' each represents at least one of chlorine and bromine; and a, b, c, d, e and f are the numbers defined by one of the following five combinations:1. 0.80.ltoreq.a.sub.1 .ltoreq.1.50, 0.10.ltoreq.b.sub.1 .ltoreq.1.50, c.sub.1 .dbd.0, 0.001.ltoreq.d.sub.1 .ltoreq.0.20, e.sub.1 .dbd.0 and f.sub.1 .dbd.0;2. 0.30.ltoreq.a.sub.2 .ltoreq.1.50, 0.10.ltoreq.b.Type: GrantFiled: July 26, 1977Date of Patent: August 22, 1978Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Yuji Aoki, Keiji Shimiya, Norio Miura, Etsuo Mori, Yujiro Suzuki
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Patent number: 4104223Abstract: An aqueous epoxy resin paint composition comprising an epoxy resin emulsion formed by emulsifying a bisphenol type epoxy resin or a mixture of a bisphenol type epoxy resing with an epoxy resin havng a compatibility with said bisphenol type epoxy resin and structure similar to that of said bisphenol type epoxy resin but being quite different therefrom in a part of the structure in water with a polyoxyethylene benzylated phenyl ether having an HLB value of at least 15, and a curing agent and, if desired, a pigment and other additives.Type: GrantFiled: March 12, 1976Date of Patent: August 1, 1978Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Minoru Hosoda, Eiichi Kasiwagi, Fumio Murayama, Kohei Isayama
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Patent number: 4100454Abstract: A fluorescent display device capable of emitting blue to green light of high luminance and purity is composed of a vacuum tube having an anodic plate bearing thereon a fluorescent screen and a cathode facing the fluorescent screen. The fluorescent screen comprises a gallate-based phosphor represented by the formulaA(Zn.sub.1-x,Mg.sub.x)O.multidot.Ga.sub.2 O.sub.3 :BMnwherein 0.6 .ltoreq. A .ltoreq. 1.2, 0 .ltoreq. B .ltoreq. 5 .times. 10.sup.-2, and 0 .ltoreq. x .ltoreq. 1.0. The vacuum tube may further contain a control grid between the anodic plate and the cathode.Type: GrantFiled: January 20, 1976Date of Patent: July 11, 1978Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Takashi Hase, Akiyasu Kagami, Yoshiyuki Mimura, Kinichiro Narita, Minoru Hiraki
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Patent number: 4098749Abstract: The present invention relates to an anticorrosion primer coating composition comprising (i) a polyvinyl butyral resin, (ii) an organo functional silane, (iii) at least one member selected from the group consisting of inorganic borate compounds and polyphosphate compounds, and (iv) phosphoric acid.Type: GrantFiled: March 24, 1977Date of Patent: July 4, 1978Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Minoru Hoshino, Toshio Shinohara, Yukio Kawahara, Katsuji Takase, Toshimoto Tsuji, Jun-ichi Fukuda
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Patent number: 4098844Abstract: A thermosetting synthetic polymer dispersion obtained by copolymerizing unsaturated monomers in a non-polar organic liquid or an organic liquid having a low polarity in the presence of a stabilizer formed by reacting (1) a partially blocked isocyanate containing a free isocyanate group and a blocked isocyanate group with (2) an active hydrogen-containing, polymer compound in such a ratio that the amount of the active hydrogen group of the compound (2) is at least equivalent to the amount of the free isocyanate group of the isocyanate compound (1), and a process for the preparation of such a thermosetting synthetic polymer dispersion.Type: GrantFiled: August 8, 1975Date of Patent: July 4, 1978Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Hideyoshi Tsugukuni, Masafumi Kano, Mitsuhiro Matsuda
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Patent number: 4090085Abstract: In an intensifying screen composed of a support layer, a phosphor layer and a protective layer or of a support layer, a reflective layer, a phosphor layer and a protective layer, a carbon black layer is interposed between the support layer and the phosphor layer or the reflective layer. Further, antistatic agents are mingled in the protective layer.Type: GrantFiled: August 23, 1976Date of Patent: May 16, 1978Assignees: Dai Nippon Toryo Co., Ltd., Fuji Photo Film Co., Ltd.Inventors: Keiji Shimiya, Norio Miura, Masao Takano, Kunio Ishigaki
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Patent number: 4088434Abstract: A die for continuously extruding hollow articles from thermosetting resins comprises an outer cylinder and an inner cylinder arranged coaxially with an annular gap left between them for the passage of resin, both cylinders being adjusted so as to be cooled at their upstream portions and heated at their downstream portions relative to the flow of extrusion.Type: GrantFiled: January 17, 1977Date of Patent: May 9, 1978Assignees: The Japan Steel Works Ltd., Dai Nippon Toryo Co., Ltd.Inventors: Yoshihiko Fukuda, Hidefumi Ishimori, Masafumi Toyomatsu, Masayoshi Tsubone, Hideki Mizuguchi, Hideo Masuda
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Patent number: 4085351Abstract: In an air-tight at least partially transparent container, a phosphor, a gas or gas mixture and a pair of discharging electrodes are contained. The discharge gap is in the range of 0.1 to 3.0mm, and the pressure of the gas or gas mixture sealed in the container is such that the product of the pressure and the discharge gap is in the range of 30 to 300 Torr.mm. The gas or gas mixture has discharge radiation spectra within the region of wavelength shorter than 200nm. The phosphor is a manganese activated aluminate phosphor represented by the formula(M.sup.II.sub.1-x, Mn.sub.x ) O.multidot.zAl.sub.2 O.sub.3where M.sup.II is selected from a group consisting of calcium, strontium, barium, magnesium and zinc, and x and z are numbers within the ranges of 10.sup.-3 .ltoreq.x.ltoreq.7.times.10.sup.-1 and 1.ltoreq.z.ltoreq.20, respectively.Type: GrantFiled: January 24, 1977Date of Patent: April 18, 1978Assignees: Dai Nippon Toryo Co., Ltd., Nippon Hoso KyokaiInventors: Koichi Takahashi, Kinichiro Narita, Akiyasu Kagami, Takashi Hase, Yoshiyuki Mimura, Yoshinori Tanigami, Junro Koike, Ryuya Toyonaga, Takehiro Kojima
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Patent number: 4081398Abstract: Fluorescent compositions which contain indium oxide and one phosphor selected from the group hereinafter defined in a weight ratio within the range of 1/9 to 9/1, and fluorescent display devices having said fluorescent compositions in the form of a fluorescent screen, which can emit green, blue or red light under low-velocity electron excitation, said group consisting of a terbium activated lanthanum oxysulfide phosphor or a terbium activated lanthanum yttrium oxysulfide phosphor [(La.sub.1-x, Y.sub.x).sub.2 O.sub.2 S:Tb, wherein 0.ltoreq.x<1], a copper and aluminium activated zinc cadmium sulfide phosphor [(Zn.sub.1-x, Cd.sub.x)S: Cu, Al, wherein 0.ltoreq.x.ltoreq.0.1], a europium activated strontium gallium sulfide phosphor (SrGa.sub.2 S.sub.4 :Eu.sup.2+), a cerium activated yttrium aluminium gallate phosphor [Y.sub.3 (Al.sub.1-y, Ga.sub.y).sub.5 O.sub.12 :Ce, wherein 0.ltoreq.y.ltoreq.0.5], a manganese activated zinc silicate phosphor (Zn.sub.2 SiO.sub.Type: GrantFiled: January 17, 1977Date of Patent: March 28, 1978Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Takashi Hase, Akiyasu Kagami, Yoshiyuki Mimura, Kinichiro Narita, Minoru Hiraki
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Patent number: 4067838Abstract: A chelate-forming two-pack type aqueous resin composition comprising (i) an aqueous dispersion of a resin containing in the molecule at least 2 epoxy groups and (ii) a reaction product formed between an amino curing agent containing in the molecule at least 2 nitrogen atoms and active hydrogen atoms bonded thereto and protocatechuic acid and/or gallic acid is disclosed.Type: GrantFiled: February 12, 1976Date of Patent: January 10, 1978Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Masaaki Hayashi, Kazuyoshi Tsuneta, Hiroharu Sasaki, Hiroshi Takada
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Patent number: 4058475Abstract: Liquid crystalline p-cyanocinnamic acid p'-n-alkoxyphenyl esters, and nematic liquid crystal compositions containing the same, useful for electro-optical devices, are described.Type: GrantFiled: June 3, 1976Date of Patent: November 15, 1977Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Toshio Jinnai, Goro Matusmoto, Kazuhito Iwasaki
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Patent number: 4056592Abstract: A process for the preparation of thermosetting resin powder paints comprising the steps of extruding a melt of a resinous composition for a thermosetting powder paint, continuously cooling the composition and forming it into a sheet, and pulverizing the formed sheet. Air blasting nozzles are directed at the sheet while it is on the cooling rolls. The adherence between the sheet and the rolls is improved, and the air blasting nozzles provide an auxiliary means for cooling the sheet.Type: GrantFiled: July 7, 1975Date of Patent: November 1, 1977Assignees: Dai Nippon Toryo Co., Ltd., The Japan Steel Works Ltd.Inventors: Ryoji Izumi, Shoji Kobayashi, Toshiharu Ono, Toru Shirato, Akiyoshi Fujii, Tadashi Okihara