Patents Assigned to Dai-Ichi Kogyo Seiyaku Co., Ltd.
  • Flame-retardant styrene resin composition
    Patent number: 7468408
    Abstract: Disclosed is a flame retarded styrene-based resin composition containing a brominated flame retardant and an additive capable of enhancing the flame retardancy of the shaped article of the composition even in a very small amount of addition. The composition comprises (A) a styrene-based resin, (B) 0.1 to 30 parts by weight per 100 parts by weight of the resin (A) of a brominated flame retardant having a bromine content greater than 50 wt %, and (C) 0.01 to 0.2 parts by weight per 100 parts by weight of the resin (A) of a metal phthalocyanine selected from iron, manganese, cobalt, nickel, platinum or paradium phthalocyanine.
    Type: Grant
    Filed: January 11, 2005
    Date of Patent: December 23, 2008
    Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Hideaki Onishi, Makoto Teramoto
  • Water-Based Coating Composition for Surface Treatment of Metallic Material
    Publication number: 20080119628
    Abstract: In order to provide a water-based coating composition for surface treatment of metallic materials having excellent chemical resistance, corrosion resistance, solvent resistance and adhesion, a cationic aqueous urethane resin (F) is prepared, which is obtained by chain-elongation of a cationic urethane prepolymer (D) using water or a polyamine compound (E), the cationic urethane prepolymer (D) being formed by neutralized a tertiary amino group by an acid or quaternarized the tertiary amino group by quaternarizing agent, the tertiary amino group being included in a urethane prepolymer comprising, as components thereof, a compound (A) having two or more active hydrogen atoms, an organic polyisocyanate (B), and a chain elongation agent (C) having the tertiary amino group.
    Type: Application
    Filed: March 16, 2005
    Publication date: May 22, 2008
    Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.
    Inventors: Hidekazu Wada, Shuichi Ito
  • Method for drying nonionic alkylene oxide-type water-soluble resin, method for packaging it, and method for transporting it
    Patent number: 7354984
    Abstract: To efficiently dry it, a nonionic alkylene oxide-type water-soluble resin is put into a container, then the container is degassed to a prescribed vacuum degree which is maintained while a dry gas having a dew point not higher than prescribed is introduced into the container at a rate not lower than prescribed. Minor volatiles are efficiently removed from the resin in an evaporation tank having a stirring blade. For protecting the dried resin from water, a dry gas is introduced into and air is purged from an empty packaging container whereafter the resin is charged into the container is sealed. By controlling solvent content and visocity of the resin and loading it into a temperature-controlled transportation container and/or unloading it out of the transportation container by the use of a pump, good subsquent processability of the resin and prevention of deterioration thereof are ensured.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: April 8, 2008
    Assignees: Dai-ichi Kogyo Seiyaku Co., Ltd., Nippon Shokubai Co., Ltd.
    Inventors: Michiyuki Kono, Manabu Kikuta, Masaki Tezuka, Hiroshi Tanaka, Takao Yokohashi, Takao Nishihata, Kazuhiko Murata, Taketo Toba, Fumihide Tamura, Ritsuo Kitada
  • Ion-polymer gel electrolyte and its precursor composition
    Patent number: 7279540
    Abstract: A precursor composition capable to form a solid-state electrolyte having good ion conductivity and high heat-resistance, by simple curing procedure, comprising; (A) a polymerizable ion pair compound represented by formula I, (B) a cross-linker having two or more unsaturated groups co-polymerizable with the polymerizable ion pair compound (A), and (C) non-polymerizable ion pair compound. Each of R1, R2, R3, R4, R5 and R6 represents hydrogen atom, alkyl or aryl group having 1-12 carbon atoms; and each of R7 and R8 represents alkyl or aryl group having 1-12 carbon atoms.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: October 9, 2007
    Assignee: Dai-ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Manabu Kikuta, Akiyoshi Hatakeyama
  • Polyether composition
    Publication number: 20070173614
    Abstract: An object of the present invention is to provide a polyether composition that can suppress reduction in a molecular weight of polyether having a low glass transition temperature and melting point. As a means of achieving this object, a polyether composition of the present invention contains polyether having a glass transition temperature of ?50° C. or lower and a melting point of 55° C. or lower and, at the same time, contains at least one kind selected from the group consisting of compounds represented by the specified three general formulas.
    Type: Application
    Filed: March 8, 2005
    Publication date: July 26, 2007
    Applicants: Nippon Shokubai Co., Ltd., Dai-ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Keiichiro Mizuta, Teruki Matsushita, Kenji Shimizu, Kazuo Takei, Michiyuki Kono, Manabu Kikuta, Nobuo Ochiai
  • Cladding resin composition
    Publication number: 20070161772
    Abstract: The invention relates to a cladding resin composition curable by heat, ultraviolet radiation, an electron beam or the like. The composition comprises a polyoxyalkylene polyol phosphate ester (hydroxyl value: 10-2,000 mg KOH/g) and a polymerizable or reactive functional group-containing compound. This composition is highly conductive as it is and, without incorporation of the conventional conductive additives, can be used successfully in the field of coatings and protective films where electric conductivity is a requisite.
    Type: Application
    Filed: February 27, 2007
    Publication date: July 12, 2007
    Applicant: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Tetsuo Shiraiwa, Shigeo Mori
  • Lithium secondary battery
    Patent number: 7238444
    Abstract: A lithium secondary battery which comprises a negative electrode, a positive electrode, and disposed therebetween a polymer electrolyte comprising an ionically conductive polymer. The polymer electrolyte has a two-layer structure composed of a positive-electrode-side layer and a negative-electrode-side layer. The polymer electrolyte on the positive-electrode side contains a nonaqueous electrolytic solution containing a lithium salt in a higher concentration than that in the polymer electrolyte on the negative-electrode side. The battery is improved in charge/discharge cycling characteristics and high-load discharge characteristics.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: July 3, 2007
    Assignees: Dai-Ichi Kogyo Seiyaku Co., Ltd., Sharp Corporation
    Inventors: Tsutomu Sada, Kazunari Takeda, Yumiko Takashima, Naoto Nishimura, Takehito Mitate, Kazuo Yamada, Motoaki Nishijima, Naoto Torata
  • Cladding resin composition
    Patent number: 7189444
    Abstract: The invention relates to a cladding resin composition curable by heat, ultraviolet radiation, an electron beam or the like. The composition comprises a polyoxyalkylene polyol phosphate ester (hydroxyl value: 10–2,000 mg KOH/g) and a polymerizable or reactive functional group-containing compound. This composition is highly conductive as it is and, without incorporation of the conventional conductive additives, can be used successfully in the field of coatings and protective films where electric conductivity is a requisite.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: March 13, 2007
    Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Tetsuo Shiraiwa, Shigeo Mori
  • Process for reducing monomer content in N-vinyl compound polymers
    Patent number: 7160957
    Abstract: A method for residual monomer diminution by which a residual monomer is speedily removed from an N-vinyl compound polymer or the like without posing a problem such as an increase in ash content; and a process for producing an N-vinyl compound polymer solution or powder which has a regulated pH and is free from a decrease in pH with time. The method comprises adding an organic acid having a boiling point of 140° C. or higher at ordinary pressure to anaqueous solution of an N-vinyl compound polymer. The process comprises adding an organic base to an aqueous N-vinyl compound polymer solution having a pH lower than 7.0 to thereby neutralize the solution and regulate the pH thereof. Those operations are conducted in a reaction vessel in which a gaseous phase is regulated so as to have an oxygen concentration of 5.0% by volume or lower.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: January 9, 2007
    Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Toshiaki Kuriyama, Yasuko Inui
  • Water-soluble fiber and a method for manufacture thereof
    Publication number: 20060111544
    Abstract: This invention relates to a water-soluble fiber and a method of manufacturing the fiber. The water-soluble fiber of the invention is composed of a high molecular compound with a weight average molecular weight of not less than 10,000, which high molecular compound is obtainable by reacting a polyalkylene oxide compound, which is obtainable by addition polymerization of an ethylene oxide-containing alkylene oxide and an organic compound containing two active hydrogen atoms, with a polycarboxylic acid, an anhydride thereof, a lower alkyl ester thereof, or a diisocyanate and is manufactured by spinning the same high molecular compound. The water-soluble fiber of the invention is not only high in elongation and tensile strength but is readily soluble in water.
    Type: Application
    Filed: December 30, 2005
    Publication date: May 25, 2006
    Applicant: Dai-ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Takeshi Fujita, Chuzo Isoda, Sejin Pu
  • Ion-conductive polymeric compound, polymeric electrolyte and electric device
    Patent number: 7045242
    Abstract: Polymeric compounds are provided the use of which expedites dissociation of an electrolytic salt. The polymeric compounds have a trivalent boron atom which is a Lewis acid. Transport rates of charge carrier ions can be controlled by trapping counter ions of charge carrier ions in the polymeric chain.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: May 16, 2006
    Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Masahito Nishiura, Michiyuki Kono, Masayoshi Watanabe
  • Flame-retardant styrene resin composition
    Patent number: 7026386
    Abstract: The present invention relates to a flame-retarded styrene-based plastic composition comprising (A) a styrene-based plastic material (B) a brominated aromatic compound having a melting point from 200° C. to 260° C. in which all bromine atoms are attached to the aromatic ring, (C) a brominated aromatic compound having a melting point above 300° C. in which all bromine atoms are attached to the aromatic ring, (D) an organic compound having at least one 2,3-dibromopropyl group, and optionally (E) antimony trioxide.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: April 11, 2006
    Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventor: Hideaki Onishi
  • Inorganic fine particles, inorganic raw material powder, and method for production thereof
    Publication number: 20060051288
    Abstract: The present invention provides new process for preparing inorganic fine particles, which suppresses agglomeration and adhesion of particles due to heat when preparing powder from a raw material liquid such as a slurry of zirconia hydrate fine particles in order to obtain inorganic raw material powder having sharp particle size distribution. Furthermore, the present invention provides a new process for preparing inorganic fine particles, which can make the chemical structure homogenous among the produced particles and inside the particles even in a multi-component system. The present invention provides a process for preparing inorganic fine particles, which comprises heating and applying impulse waves to a raw material liquid.
    Type: Application
    Filed: November 6, 2003
    Publication date: March 9, 2006
    Applicants: DAI-ICHI KOGYO SEIYAKU CO. LTD, PULTECH CORPORATION, TORY INDUSTRIES, INC.
    Inventors: Toru Tsurumi, Masaki Yoshino, Mineo Sabi, Fumio Yoshida, Satoshi Ishida, Minoru Yonehara, Toshiaki Kimura, Atsuyoshi Kubotani
  • Water-soluble fiber and a method for manufacture therefor
    Patent number: 7001976
    Abstract: This invention relates to a water-soluble fiber and a method of manufacturing the fiber. The water-soluble fiber of the invention is composed of a high molecular compound with a weight average molecular weight of not less than 10,000, which high molecular compound is obtainable by reacting a polyalkylene oxide compound, which is obtainable by addition polymerization of an ethylene oxide-containing alkylene oxide and an organic compound containing two active hydrogen atoms, with a polycarboxylic acid, an anhydride thereof, a lower alkyl ester thereof, or a diisocyanate and is manufactured by spinning the same high molecular compound. The water-soluble fiber of the invention is not only high in elongation and tensile strength but is readily soluble in water.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: February 21, 2006
    Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Takeshi Fujita, Chuzo Isoda, Sejin Pu
  • Flame retarded polyamide or polyester resin compositions
    Patent number: 6924332
    Abstract: A flame retarded polyamide or polyester resin composition is disclosed. The composition comprises (A) polyamide or polyester resin; (B) 3 to 50 parts by weight per 100 parts of said resin of brominated polystyrene or brominated polyphenylene ether; and (C) 10 to 10,000 ppm of said resin of a thermal coloration inhibitor selected from the group consisting of hydrazine, a hydrazino compound, a hydrazono compound and an acid addition salt thereof.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: August 2, 2005
    Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Hideaki Onishi, Makoto Teramoto
  • Flame-retardant polyolefin resin composition
    Patent number: 6924331
    Abstract: A flame retarded polyolefin resin composition comprises polyolefin resin, 1 to 40 parts by weight per 100 parts of the polyolefin resin of a brominated bisphenol ether derivative of the formula: wherein R is hydrogen or methyl, and A is —C(CH3)2—, —SO2—, —S—, or —CH2—; and 1 to 30 parts by weight per 100 parts of the polyolefin resin of 2,4,6-tris(mono-, di- or tribromophenoxy)triazine.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: August 2, 2005
    Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Makoto Teramoto, Hideaki Onishi
  • Flame-retardant polyolefin-resin composition
    Patent number: 6919391
    Abstract: A flame retarded polyolefin resin composition comprises polyolefin resin, 1 to 40 parts by weight per 100 parts of the polyolefin resin of a brominated bisphenol ether derivative of the formula 1: wherein R is hydrogen or methyl, and A is —C(CH3)2—, —SO2—, —S—, or —CH2—; and 1 to 30 parts by weight per 100 parts of the polyolefin resin of a compound of the formula 2. wherein B is mono-, di- or tribromophenyl group, n is an integer from 1 to 20, and A is as defined above.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: July 19, 2005
    Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Makoto Teramoto, Hideaki Onishi
  • Polyether polymer compounds as well as ion conductible polymer compositions and electrochemical devices using the same
    Patent number: 6913851
    Abstract: The present invention is aimed to provide polyether polymers capable of improving an ion conductivity around room temperature as well as ion conductible polymer compositions and electrochemical devices using the same. The above objectives are achieved by using polyether polymers characterized by having the structure unit represented by the formula (1) and the structure unit represented by the formula (2) and/or the structure unit represented by the formula (3), and having polymerizable and/or non-polymerizable functional groups at each end of the molecular chains.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: July 5, 2005
    Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Masahito Nishiura, Michiyuki Kono
  • Brominated polyphenylene oxide and flame retardant employing the brominated polyphenylene oxide
    Patent number: 6864343
    Abstract: A brominated polyphenylene oxide having a molecular skeleton obtained by condensing tribromophenols and satisfying the requirements: (A) its 20 wt. % solution in chloroform has an absorbance at 600 nm of not larger than 0.6; (B) when 50 ml of ion-exchanged water is added to its 1.00 g/30 ml solution in dioxane, the resulting solution has an electroconductivity of not larger than 10 ?S/cm measured at 25° C.; and (C) when a mixture comprised of 20% by weight of the brominated polyphenylene oxide and 80% by weight of triphenyl phosphate is heated at 280° C. for 20 minutes, the halide ion increase therein is not larger than 10 ?mols per gram of the brominated polyphenylene oxide, is used as a flame retardant. When it is added to resin, the resin moldings are excellent in its flame retardancy, electric properties, physical properties, thermal stability and appearance (color hue), and they do not corrode molds.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: March 8, 2005
    Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventor: Hideaki Onishi
  • Polyelectrolyte, non-aqueous electrolyte, and electrical device containing the same
    Patent number: RE40302
    Abstract: Provided are a polymeric electrolyte or a nonaqueous electrolyte that can improve a transport rate of charge carrier ions by adding a compound having boron atoms in the structure, preferably one or more selected from the group consisting of compounds represented by the following general formulas (1) to (4), and an electric device such as a cell or the like using the same. wherein R11, R12, R13, R14, R15, R16, R21, R22, R23, R24, R25, R26, R27, R28, R31, R32, R33, R34, R35, R36, R37, R38, R39, R310, R41, R42, R43, R44, R45, R46, R47, R48, R49, R410, R411 and R412 each represent a hydrogen atom, a halogen atom or a monovalent group, or represent groups bound to each other to form a ring, and Ra, Rb, Rc and Rd each represent a group having a site capable of being bound to boron atoms which are the same or different.
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: May 6, 2008
    Assignee: Dai-Ichi Kogyo Seiyaku Co. Ltd.
    Inventors: Masahito Nishiura, Michiyuki Kono, Masayoshi Watanabe