Patents Assigned to Nippon Shokubai Kagaku Kogyo
  • Patent number: 5021227
    Abstract: The present invention concerns a method of removing nitrogen oxides in exhaust gases from a diesel engine by using a catalyst in a reacter under the presence of ammonia, wherein a humidity of in-take air as a specific factor and one or more of engine power, fuel consumption amount of engine, temperature of engine in-take air and exhaust gas temperature as selective factors are measured respectively as the measuring factors and the flow rate of ammonia is controlled based on measured values and ammonia is supplied to an exhaust gas flow channel from the engine to the reactor.
    Type: Grant
    Filed: February 2, 1990
    Date of Patent: June 4, 1991
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Motonobu Kobayashi, Futoru Kinoshita, Mitsuharu Hagi, Akira Inoue, Terushige Uno
  • Patent number: 5015617
    Abstract: A catalyst for purifying exhaust gas produced by coating honeycomb carriers of monolithic structure with a catalyst composition comprising cerium oxide particles stabilized with (a) zirconia or (b) zirconia and at least one member selected from the group consisting of yttria and calcia, refractory inorganic oxide particles, 0.02 to 2% by weight of rhodium based on said catalyst composition, and 0 to 10% by weight of at least one platinum-family metal selected from the group consisting of platinum and palladium based on said catalyst composition.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: May 14, 1991
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Tomohisa Ohata, Kazuo Tsuchitani, Shinya Kitaguchi
  • Patent number: 5001245
    Abstract: A preparation of metallic salt of ethercarboxylic acid in a pure form by restraining the formation of fumaric acid likely to occur when maleic acid and/or maleic anhydride react with oxycarboxylic acid. The ethercarboxylic product is a useful chelating agent.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: March 19, 1991
    Assignee: Nippon Shokubai Kagaku Kogyo Company, Ltd.
    Inventors: Masao Nakano, Miaki Asakawa, Yusei Nagamura, Akio Fukui, Yoichi Nakagawa
  • Patent number: 5000929
    Abstract: An exhaust gas purification catalyst for purifying carbonaceous fine particles comprising a refractory three-dimensional structure and deposited thereon, (a) a refractory inorganic oxide, (b) palladium and (c) an oxide of at least one element selected from the group consisting of praseodymium, neodymium and samarium as catalyst components.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: March 19, 1991
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Makoto Horiuchi, Yasuo Ikeda, Koichi Saito
  • Patent number: 4994520
    Abstract: A carbon black-graft polymer, produced by causing a polymer possessing within the molecular unit thereof at least one reactive group selected from the class consisting of aziridine group, oxazoline group. N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black. The polymer can be used as a toner for electrostatically charged image, resin composition, coating composition, ink for thermographic transfer, coating agent for magnetic recording medium, rubber composition, and carbon black dispersion and the like.
    Type: Grant
    Filed: June 6, 1990
    Date of Patent: February 19, 1991
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Yoshikuni Mori, Mitsuo Kushino, Hayato Ideda, Nobuaki Urashima, Masuji Izubayashi, Shigeru Tanimori, Yoshihiro Arita, Kiyoshi Kawamura, Kenji Minami, Yoshinori Sano
  • Patent number: 4989538
    Abstract: Described herein is a resin composition sprinkling mechanism useful in the production of a fiber reinforced resinous molding material, the sprinkling mechanism employing a transfer roller which is resiliently abutted against a sprinkling roller rotating in a fixed position to sprinkle completely in finely divided form a liquid resin composition being transferred along the surface of the transfer roller, thereby permitting to produce continuously a fiber reinforced resinous molding material of uniform quality.
    Type: Grant
    Filed: October 25, 1989
    Date of Patent: February 5, 1991
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Katsushige Tamura, Shigehiro Yamamoto, Hideo Saijyo
  • Patent number: 4985514
    Abstract: The present invention is a method for the production of a water absorbent resin, which comprises preparing a monomer component possessing an ability to form a cross-linked structure and convert itself into a hydrated gel polymer during the course of aqueous solution polymerization, possessing an acid group-containing monomer content of at least 50 mol %, and having 10 to 50 mol % of said acid group-containing monomer neutralized and subjecting said monomer component to aqueous solution polymerization within a reaction vessel having a plurality of rotary shafts each fitted with stirring blades.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: January 15, 1991
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Kazumasa Kimura, Takumi Hatsuda, Yoshio Irie, Tadao Shimomura
  • Patent number: 4983681
    Abstract: Colored microfine globular particles are produced by causing carbon black to react with a polymer capable of reacting with the carbon black thereby forming a carbon black-graft polymer, dispersing this carbon black-graft polymer in a polymerizable monomer component, and then polymerizing the polymerizable monomer component. These particles, in the unmodified form, are usable as a toner for the development of images of static charge and, in a form incorporated in a varying component, are usable such as in resin composition, coating composition, thermosensitive transfer ink ribbon coating agent, thermosensitive transfer ink, or back-coating agent for magnetic recording medium.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: January 8, 1991
    Assignee: Nippon Shokubai Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yoshikuni Mori, Mitsuo Kushino, Hayato Ikeda, Nobuaki Urashima, Kenji Minami, Iwao Fukikawa
  • Patent number: 4983710
    Abstract: A method for the production of methylolaminotriazine condensate by the reaction of cyclohexanecarboguanamine (A) and formaldehyde (B), which method comprises preparing a solution of formaldehyde (B) or a solution containing cyclohexanecarboguanamine (A) and formaldehyde (B) in such amounts that the molar ratio of (A)/(B) will be not more than 1/2.5, keeping the temperature of said solution in the range of 55.degree. to 150.degree. C. and, at the same time, gradually supplying cyclohexanecarboguanaimine (A) thereto.
    Type: Grant
    Filed: August 10, 1989
    Date of Patent: January 8, 1991
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Hidetaka Yatagai, Jiro Iriguchi, Souichi Yamada, Tsuguo Takaya
  • Patent number: 4980416
    Abstract: A heat-resistant resin composition, comprising (A) 30 to 95% by weight of at least oen unsaturated ester compound selected from the group consisting of (I) unsaturated ester compounds represented by the formula I: ##STR1## wherein R.sup.1 s independently stand for one member selected from the class consisting of ##STR2## wherein R.sup.3 and R.sup.4 independently stand for a hydrogen atom or a methyl group, and a hydrogen atom, and at least one R.sup.1 stands for ##STR3## wherein R.sup.3 and R.sup.4 independently stand for a hydrogen atom or a methyl group, and R.sup.2 s independently stand for an atom or an organic group selected from the class consisting of a hydrogen atom, halogen atoms, a methoxy group, and alkyl groups of 1 to 5 carbon atoms, and m stands for 0 or an integer in the range of 1 to 10, and (II) unsaturated ester compounds represented by the formula II; ##STR4## wherein R.sup.5 s independently stand for one member selected from the class consisting of ##STR5## wherein R.sup.3 and R.sup.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: December 25, 1990
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Toshio Awaji, Takao Omi, Kenichi Ueda
  • Patent number: 4980483
    Abstract: A method for the production of a maleimide, which comprises effecting a former-stage reaction by adding maleic anhydride and a primary amine in amounts such that the molar ratio of said maleic anhydride to said primary amine is less than 1 under application of heat to a water-insoluble or water-immisible inert organic solvent containing an acid catalyst and subsequently carrying out a latter-stage reaction by adding to the reaction system maleic anhydride in an amount such that the molar ratio of the total amount of maleic anhydride to be added to said reaction system to the total amount of said primary amine added to said reaction system exceeds 1.
    Type: Grant
    Filed: February 14, 1989
    Date of Patent: December 25, 1990
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Yuichi Kita, Masakazu Nakagawa, Hitoshi Kanei, Akio Fukui
  • Patent number: 4977118
    Abstract: A method for regeneration of catalyst which comprises phosphorus and alkali metal element and/or alkaline earth metal element and was deteriorated by use to produce aziridine compound represented by the general formula ##STR1## wherein R is hydrogen, a methyl group or an ethyl group, by a catalytic vapor-phase intramolecular dehydration reaction of alkanolamine represented by the general formula ##STR2## wherein R is as defined in the formula (II), X is OH or NH.sub.2, and Y is either NH.sub.2 when X is OH or OH when X is NH.sub.2, characterized in that the deteriorated catalyst is contacted with gaseous volatile phosphorus compound.
    Type: Grant
    Filed: February 27, 1990
    Date of Patent: December 11, 1990
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Hideaki Tsuneki, Kimio Ariyoshi, Atusi Moriya, Michio Ueshima
  • Patent number: 4973640
    Abstract: A resin having a low specific gravity, an excellent impact resistance and a high refractive index can be produced by radical polymerization of a polymerizable monomer mixture composed essentially of [I] at least one polymerizable monomer selected from the group consisting of specific polyfunctional (meth)acrylates, [II] at least one polymerizable monomer selected from the group consisting of styrene and alpha-methylstyrene, and [III] at least one polymerizable monomer selected from the group consisting of unsaturated nitriles. This invention provides an optical material composed of said resin, especially, a lens.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: November 27, 1990
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Tatsuhito Matsuda, Yasuaki Funae, Masahiro Yoshida, Tetsuya Yamamoto, Tsuguo Takaya
  • Patent number: 4973689
    Abstract: In a method for the production of cyclohexanecarboguanamine by the reaction of cyanocyclohexane with dicyandiamide in an organic solvent possessing a hydroxyl group in the molecular unit thereof at a temperature in the range of 90.degree. to 200.degree. C. in the presence of a basic catalyst, the improvement which comprises carrying out the reaction using 0.60 to 0.95 mol of dicyandiamide per mol of cyanocyclohexane in an atmosphere substantially incapable of producing any effect of oxygen.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: November 27, 1990
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Hidetaka Yatagai, Osamu Kaieda, Jiro Iriguchi, Souichi Yamada, Tsuguo Takaya
  • Patent number: 4973440
    Abstract: A method for the production of a fiber-reinforced molding material of thermosetting resin, which method comprises supplying a liquid thermosetting resin composition to at least one spreading roller disposed as separated by a gap of not more than 5 mm from the terminal of a supply unit, rotated at speed in the range of 1,000 to 7,000 r.p.m., and provided on the circumferential source thereof with at least one ridge or groove formed parallelly to the rotary axis thereof, thereby causing the liquid thermosetting resin composition to be spread out in the form of particles, allowing said particles to be mixed with separately spread reinforcing fibers, piling the resultant mixture, and then deaerating the piled mixture thereby causing the reinforcing fibers in the piled mixture to be impregnated with the resin composition.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: November 27, 1990
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Katsushige Tamura, Shigehiro Yamamoto, Terukuni Hashimoto, Hideo Saijyo
  • Patent number: 4973632
    Abstract: This invention relates to a water-absorbent resin of a new, novel type obtained from polymerization of water-soluble ethylenically unsaturated monomer and a process for producing this resin.The water-absorbent resin in this invention has average particle diameter in a specially defined range and a narrow range of particle distribution, being superior in water-absorption capacity, and also, being superior in handling properties in a point of that, when being mixed with liquid, formation of a fish-eye is absent. The water-absorbent resin shows an angle-lacking, non-sphere shape and, in a case of shape like this, is superior in handling properties in a point that being hard in falling off from an basis material.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: November 27, 1990
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Kinya Nagasuna, Takashi Namba, Koji Miyake, Kazumasa Kimura, Tadao Shimomura
  • Patent number: 4972025
    Abstract: A cement dispersant containing a water-soluble polymer containing at least 10 mol % of structural units represented by the general formula I: ##STR1## wherein X is H or CH.sub.2 R.sup.1, R.sup.1 is H or COO--[--A).sub.m B).sub.n ]H, R is H, CH.sub.3, or COO--[--A).sub.m B).sub.n ]H (providing that R is H where X is CH.sub.2 R.sup.1), A is iminoalkylene having 2 to 4 carbon atoms, B is oxyalkylene having 2 to 4 carbon atoms, m is an average number in the range of 0.1 to 10, n is O or an average positive number not more than 100, --A).sub.m may be in a linear or branched configuration, wherein the sequence of A and B in the segment in parenthesis may be regular or random.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: November 20, 1990
    Assignee: Nippon Shokubai Kagaku Kogyo, Co., Ltd.
    Inventors: Tsuneo Tsubakimoto, Yoshinori Sano, Hideyuki Tahara, Tsuyoshi Hirata, Hiroshi Ito, Yasuhiro Mori
  • Patent number: 4966712
    Abstract: A flotation collector is formed on a copolymer comprising (A) 2 to 95 mol % of a structural unit represented by the general formula I: ##STR1## wherein R.sup.1 is H or methyl, Y is --O-- or --NH--, A is C.sub.1-4 alkylene, C.sub.2-4 hydroxyalkylene, or phenylene, and Z is ##STR2## wherein R.sup.2, R.sup.3, and R.sup.4 are independently H, C.sub.1-12 alkyl or C.sub.7-10 aralkyl and X.sup..crclbar. is anion pair, (B) 5 to 98 mol % of a structural unit represented by the general formula II: ##STR3## wherein R.sup.5 is H or methyl and W is C.sub.6-8 aryl, ##STR4## wherein n is 2 to 4 and m is 0 to 20, ##STR5## wherein R.sup.6 is C.sub.1-18 alkyl, C.sub.5-8 cycloalkyl, C.sub.7-10 aralkyl, or C.sub.6-18 aryl, and (C) 0 to 50 mol % of other structural unit. A method for the treatment of an inorganic substance-containing water system by the use of the flotation collector.
    Type: Grant
    Filed: January 19, 1989
    Date of Patent: October 30, 1990
    Assignee: Nippon Shokubai Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hideyuki Nishibayashi, Yoshiaki Urano, Nobuhiro Matsuura, Yoshiyuki Hozumi, Fumio Watanabe
  • Patent number: 4966980
    Abstract: A process for producing an aziridine compound represented by the following general formula ##STR1## wherein R represents hydrogen, or a methyl or ethyl group, which comprises intramolecularly dehydrating an alkanolamine represented by the following formula ##STR2## wherein R is as defined, X is OH or NH.sub.2, and Y is NH.sub.2 when X is OH, and OH when X is NH.sub.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: October 30, 1990
    Assignee: Nippon Shokubai Kagaku Kogyo Co. Ltd.
    Inventors: Teruo Kamei, Yuuji Shimasaki, Hideaki Tsuneki, Koichi Yamamoto, Yutaka Morimoto, Michio Ueshima
  • Patent number: 4962205
    Abstract: Method for the transportation or storage of N-phenyl maleimide, which method comprises mixing N-phenyl maleimide with maleic anhydride in a ratio of 1 to 90 parts by weight of N-phenyl maleimide to 99 to 10 parts by weight of maleic anhydride and handling the resultant mixture in a molten state in the presence of a polymerization inhibitor, and a composition of liquid state.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: October 9, 1990
    Assignee: Nippon Shokubai Kagaku Kogyo, Co., Ltd.
    Inventors: Yuichi Kita, Kazuo Kishino, Akio Fukui