Patents Assigned to Mitsubishi Petrochemical Co., Ltd.
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Patent number: 5087430Abstract: An exhaust gas containing a nitrogen oxides is passed at a temperature of 250.degree. to 550.degree. C. in the presence of a reducing agent through a catalyst bed filled with a molded denitration catalyst comprising at least the following three catalyst components(A) an oxide of at least one metallic element selected from the group consisting of Ti, Si and Zr,(B) an oxide of at least one metallic element selected from the group consisting of Mo and W, and(C) an oxide of Vsuch that the concentrations of the oxide (B) and/or the oxide (C) in the exhaust gas inlet site of the catalyst bed are higher than in the other site thereof.The molded denitration catalyst is also described.Type: GrantFiled: March 27, 1990Date of Patent: February 11, 1992Assignees: Mitsubishi Petrochemical Co., Ltd., Mitsubishi Petrochemical Engineering Co., Ltd., Chemicals Industries Co., Ltd.Inventors: Masayuki Hanada, Morio Fukuda, Takeo Koshikawa, Akihiro Yamauchi, Hiroshi Ogura
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Patent number: 5087766Abstract: A process for producing an allyl-substituted phenol compound is described, which comprises a combination of a first step in which a phenol is reacted with an allyl halide in the presence of an alkaline aqueous medium to allyl-etherify the phenol and a second step in which the reaction product obtained in the first step and containing the allyl-etherified phenol is subjected to a Claisen rearangement reaction in the absence of a medium. Also, a compound obtained by the above process is described.Type: GrantFiled: April 20, 1990Date of Patent: February 11, 1992Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Kaoru Kanayama, Shuji Ichikawa
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Patent number: 5074973Abstract: There is disclosed a non-aqueous electrolytic aluminum plating bath composition comprising an aluminum halide and a nitrogen-containing heterocyclic onium halide compound and containing an additive selected from the group consisting of an inorganic halide compound, aromatic aldehyde, ketone or carboxylic acid, an unsaturated heterocyclic compound containing more than one nitrogen atom, an unsaturated heterocyclic compound containing a sulfur atom, an aromatic hydrocarbon compound containing a sulfur atom, an aromatic hydrocarbon compound containing an amino group and an aromatic amine; and further optionally an organic polymer. The bath composition is easy in maintenance, has good covering power, and enables smooth plating with low current density.Type: GrantFiled: June 18, 1990Date of Patent: December 24, 1991Assignees: Nisshin Steel Co. Ltd., Mitsubishi Petrochemical Co. Ltd., C. Uyemura and Co. Ltd.Inventors: Setsuko Takahashi, Isao Saeki, Kikuko Tanaka, Kayoko Oku, Shoichiro Mori, Kazuhiko Ida, Katsuhiko Ohara, Fujio Matsui, Hitoshi Suzuki
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Patent number: 5073596Abstract: A composition which comprises polyphenylene ether, polyamide, rubber-like material, compatibilizing agent having double bond or triple bond, and a polarity such as a carboxyl group, amide group and the like, and a melt tension modifier comprising a compound having oxirane oxygen.Said composition makes blow molding of large size molded products possible by the effect of decreasing the drawdown of parison during blow molding.Type: GrantFiled: December 7, 1989Date of Patent: December 17, 1991Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Takayuki Inoue, Kouji Nishida, Keiichi Saito, Kazunobu Nakamori, Takefumi Uematsu, Takeyuki Uchida
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Patent number: 5049629Abstract: A color developer for pressure-sensitive copying paper is disclosed, containing a polyvalent metal-modification product of a p-substituted phenolformaldehyde condensate substantially terminated with an o-substituted phenol nucleus, with a content of a condensate component in which each of both terminal phenol nuclei thereof has a hydrogen atom at the o-position being not more than 20% by weight based on the total condensate. The color developer exhibits excellent color developability, undergoes no yellowing, and provides a color image having excellent water resistance.Type: GrantFiled: November 3, 1989Date of Patent: September 17, 1991Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Kazuhide Hayama, Yukio Saitoh
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Patent number: 5048601Abstract: A shell-and-tube apparatus, more specifically, a shell-and-tube reactor, which includes a vessel, at least one intermediate tube plate sectioning the interior of the vessel into at least two compartments having different temperatures, a number of heat transferring tubes penetrating the intermediate tube plate or plates, and a fluid passing through the tubes which is heated or cooled by a heat transfer medium surrounding the tubes. At least one insulation plate or plates are provided on one or both sides of the intermediate tube plate so that the space between the intermediate tube plate or plates and, if two or more insulation plates are used, the space or spaces between the insulation plates may be utilized as a stagnation zone for the heat transfer medium, so as to make the temperature gradient through the intermediate tube plate or plates gentle and relax the thermal stress occurring in the body wall.Type: GrantFiled: February 16, 1990Date of Patent: September 17, 1991Assignees: JGC Corporation, Mitsubishi Petrochemical Co., Ltd.Inventors: Katsunobu Yamaguchi, Tateo Kurihara, Isamu Yanai, Kazuo Kikuchi, Tomoo Saito, Suguru Hamanaka, Teruo Nagai, Yasuyuki Sakakura, Takeshi Shibano, Yoji Kawatani, Tadahiko Kondoh
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Patent number: 5041194Abstract: There is disclosed an aluminum electroplating method, which compriss using a low melting composition comprising a mixture of 20 to 80 mole % of an aluminum halide and 80 to 20 mole % of an onium halide of a nitrogen-containing compound selected from the group consisting of bicyclic quaternary amidinium halides, 1-alkylaminopyridinium halides, trialkylimidazolium halides, benzimidazolium halides, alicyclic quaternary ammonium halides and asymmetric tetraalkylammonium halides.Type: GrantFiled: May 15, 1990Date of Patent: August 20, 1991Assignees: Mitsubishi Petrochemical Co., Ltd., Nisshin Steel Co., Ltd.Inventors: Shoichiro Mori, Kazuhiko Ida, Hitoshi Suzuki, Seteuko Takahashi, Isao Saeki
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Patent number: 5032489Abstract: An optically functional element comprising an aromatic vinylene sulfide polymer as an optically changing element is disclosed. The optically functional element undergoes optical changes with low energy at a high rate to provide high contrast before and after the optical changes.Type: GrantFiled: February 26, 1990Date of Patent: July 16, 1991Assignees: Eiichi Kobayashi, Mitsubishi Petrochemical Co., Ltd.Inventors: Eiichi Kobayashi, Toyoshi Ohashi, Mitsutaka Miyabayashi
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Patent number: 5026787Abstract: A composition comprising a polyphenylene ether, a polyamide resin and a compound having an unsaturated group and a polar group in combination in the same molecule kneaded therein, and optionally an impact resistance improving material kneaded in said kneaded product. Impact resistance can be greatly improved as compared with the composition having the all components kneaded at the same time.Type: GrantFiled: January 17, 1990Date of Patent: June 25, 1991Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Kiyoji Takagi, Koji Nishida
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Patent number: 5026797Abstract: A process for producing ethylene copolymers by copolymerizing ethylene with an .alpha.-olefin having 3 to 10 carbon atoms in the gas phase polymerization method in the presence of a catalyst comprising such a solid component, component (A), that a zirconium compound having formed a II-bonding with a conjugated five-membered ring such as bis(cyclopentadienyl)zirconium dichloride is carried on a support of porous particles of a water-insoluble inorganic oxide such as silica which have been preliminarily treated with an alumoxane, and an alumoxane, component (B), characterized in that the alumoxane as the component (B) is in the form of a solution in an aromatic hydrocarbon in a concentration of at least 5% (w/v) and the component (A) and the component (B) are introduced into a polymerization vessel after they have been contacted with each other.Type: GrantFiled: October 20, 1988Date of Patent: June 25, 1991Assignee: Mitsubishi Petrochemical Co., Ltd.Inventor: Tadashi Takahashi
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Patent number: 5023383Abstract: Aromatic alcohol is produced by reducing aromatic hydroperoxide with hydrogen in a liquid phase, using a Pt catalyst solely or a catalyst containing Pt and at least one element selected from the group consisting Pb, Sn, Cu, As, Sb, In, Se and Bi in a fixed bed reactor.Type: GrantFiled: January 3, 1990Date of Patent: June 11, 1991Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Masashi Inaba, Ryozo Hamana, Hideyuki Hase, Tatsuro Ashizawa
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Patent number: 5019656Abstract: A process for preparing p-hydroxybenzyl alcohol or a derivative thereof comprising reacting a phenol and a formaldehyde source under a basic condition is disclosed, wherein the reaction is carried out in an alcoholic organic solvent in the presence of a crown ether. The process achieves high selectivity toward the para position without involving high cost.Type: GrantFiled: February 27, 1990Date of Patent: May 28, 1991Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Hiroshi Iwane, Takahiro Sugawara, Naoki Suzuki
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Patent number: 5019503Abstract: A method for producting L-threonine is described, comprising subjecting L- or DL-homoserine to enzymatic reaction in an aqueous medium in the presence of cells of biotin-requiring microorganisms belonging to the genus Brevibacterium and harvesting L-threonine from the reaction mixture.Type: GrantFiled: June 2, 1987Date of Patent: May 28, 1991Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Masato Terasawa, Yukie Satoo, Hideaki Yukawa
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Patent number: 5010174Abstract: There is disclosed a calcitonin derivative and its salt, comprising an amino acid residue at the 1-position of calcitonin which is a cyclic amino acid residue represented by the formula: ##STR1## wherein X represents a sulfur atom or a methylene group; and n represents an integer of 0 or 1. and an amino acid residue at the 7-position which is a cysteine residue which may be substituted with an appropriate protective group.Type: GrantFiled: May 17, 1989Date of Patent: April 23, 1991Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Sachio Hirose, Motomu Hane, Masanobu Inagawa
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Patent number: 5008332Abstract: A resin composition comprising an amorphous polymer as component (1), a crystalline polymer as component (2) and a rubber like polymer as component (3), wherein component (1) is dispersed in component (2) and component (3) is dispersed in component (2) in network form is disclosed. The resin composition has excellent mechanical properties such as impact strength, flexural modulus, etc.Type: GrantFiled: November 17, 1987Date of Patent: April 16, 1991Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Hironari Sano, Kenyu Ohno
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Patent number: 5004800Abstract: An aromatic polythioetherimide is disclosed, which comprises at least 50 mol % of a repeating unit represented by formula (I): ##STR1## wherein Ar is as defined in the specification, with the total of the repeating unit(s) being 100 mol %. The polythioetherimide has an excellent balance between heat resistance and mechanical properties as well as improved moldability.Type: GrantFiled: June 9, 1988Date of Patent: April 2, 1991Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Makoto Terauchi, Chikako Ikeda, Mitsutoshi Aritomi
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Patent number: 5000877Abstract: A liquid detergent composition is disclosed, which contains an N-acylaspartic acid or a salt thereof represented by formula (I): ##STR1## wherein R represents an alkyl or alkenyl group having from 7 to 21 carbon atoms; and M.sub.1 and M.sub.2 each represents a hydrogen atom or a cation derived from Na, K, NH.sub.4 or an alkanolamine, and a nitrogen-containing surface active agent selected from the group consisting of an alkylbetaine or alkylamidebetaine represented by formula (II): ##STR2## wherein R.sub.1 represents and alkyl or alkenyl group having from 10 to 22 carbon atoms which may contain an amide linkage in the chain thereof; and R.sub.2 and R.sub.3 each represents an alkyl group having from 1 to 3 carbon atoms, and an imidazoline compound represented by formula (III): ##STR3## wherein R.sub.4 represents an alkyl or alkenyl group having from 4 to 18 carbon atoms; R.sub.5 represents an alkylene group having from 1 to 4 carbon atoms; R.sub.Type: GrantFiled: August 7, 1989Date of Patent: March 19, 1991Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Takazumi Kanekiyo, Noriaki Tanaka, Suzuo Sano
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Patent number: 4996334Abstract: A dibenzylidenesorbitol derivative having at least one nuclear substituent selected from an ester group represented by --COOR.sup.1 and an amido group represented by --CONR.sup.2 R.sup.3, wherein R.sup.1 represents a hydrocarbon group having 1 to 20 carbon atoms, and R.sup.2 and R.sup.3 are identical or different and each independently represents a hydrogen atom, an alkyl group, an aryl group or an aralkyl group.Type: GrantFiled: February 3, 1989Date of Patent: February 26, 1991Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Mitsumasa Kaitoh, Shoichiro Mori
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Patent number: 4990584Abstract: A vinylidene cyanide copolymer obtained by copolymerizing vinyldene cyanide represented by formula (I) ##STR1## and a vinyl compound represented by formula (II) ##STR2## wherein Z represents a hydrogen atom or a saturated hydrocarbon group having from 1 to 6 carbon atoms; when Z is a hydrogen atom, R represents C.sub.n H.sub.2n+1 COO--, wherein n represents 0 or an integer of from 4 to 9; and when Z is a saturated hydrocarbon group, R represents CH.sub.3 COO-- or a group having a benzene ring. The copolymer is excellent in transparency and provides an electret exhibiting excellent pyroelectricity or piezoelectricity upon polarization.Type: GrantFiled: November 16, 1988Date of Patent: February 5, 1991Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Manabu Kishimoto, Kenji Nakajima, Iwao Seo
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Patent number: 4990653Abstract: A sulfur-containing acryl oligomer composition represented by formula (I): ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl group; R.sub.2 and R.sub.3 each represents an alkylene group having from 1 to 12 carbon atoms; R.sub.4 represents an alkylene group having from 1 to 12 carbon atoms, an oxydialkylene group having from 2 to 12 carbon atoms, or an aralkylene group having from 6 to 20 carbon atoms; X represents a chlorine, bromine or iodine atom; m represents 0 or an integer of from 1 to 4; and n represents an average degree of oligomerization of 10 or smaller.The oligomer composition provides on polymerization a cured product having a refractive indices of 1.60 or higher, excellent transparency, and optical uniformity and is therefore useful as a material for plastic lenses.Type: GrantFiled: March 30, 1989Date of Patent: February 5, 1991Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Seiichiro Hayakawa, Shoji Ichihara