Patents Assigned to Mitsubishi Petrochemical Co., Ltd.
  • Blade for electrophotographic apparatus
    Patent number: 4984326
    Abstract: AS blade of an electrophotographic apparatus using a toner which can be integrally molded with a metallic holder and has high dimensional precision, stable charging charactersitics, and excellent properties of preventing adhesion of a toner, said blade being characterized by comprising a fluorocarbon polymer composition comprising 60 to 95% by weight of a fluorocarbon polymer, 40 to 5% by weight of a positively chargeable and non-conductive inorganic filler having an average particle diameter of 5 .mu.m or less, and 0 to 25 parts by weight, per 100 parts by weight of the total of said fluorocarbon polymer and inorganic filler, of a conductive filler having an average particle diameter of 5 .mu.m or less.
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: January 15, 1991
    Assignees: Mitsubishi Petrochemical Co., Ltd., Ricoh Company Ltd.
    Inventors: Shinji Horie, Hideto Shimizu, Michio Ohmori, Hiroshi Yui
  • Resin composition
    Patent number: 4985495
    Abstract: Disclosed is a polymer alloy consisting essentially of a composition of a polyphenylene ether, a crystalline propylene resin, and an alkenyl aromatic monomer modified propylene-dialkenylbenzene compound copolymer. The composition excels in heat resistance and resistance to oils.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: January 15, 1991
    Assignees: Toyota Jidosha Kabushiki Kaisha, Mitsubishi Petrochemical Co., Ltd.
    Inventors: Takeyoshi Nishio, Shinichi Yamauchi, Yusuke Arashiro, Kenyu Ohno, Masuzo Yokoyama, Hiroshi Nakano, Hiroshi Ohmori, Junji Mayumi, Michiharu Kihira
  • Optical material
    Patent number: 4985179
    Abstract: An optical material obtained by electrically polarizing a high polymer molded article obtained from a composition comprising a copolymer of vinylidene cyanide and at least one comonomer selected from vinyl compounds, other vinylidene compounds and dienes having uniformly dispersed therein from 0.1 to 70% by weight of an organic molecular crystal having nonlinear optical effects, with the total amount of the copolymer and the organic molecular crystal being 100% by weight. The optical material has excellent orientation of the organic molecular crystal, great nonlinear optical effects, and excellent moldability.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: January 15, 1991
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Iwao Seo, Kenji Nakajima, Manabu Kishimoto
  • Crosslinked molded product
    Patent number: 4983675
    Abstract: A silane-crosslinkable copolymer composition comprising: (A) 100 parts by weight of a copolymer prepared by radically polymerizing a polymerizable monomeric mixture consisting essentially of ethylene and at least one ethylenically unsaturated silane compound selected from the group consisting of vinyltrimethoxysilane, vinyltriethoxysilane and .gamma.-methacryloxypropyltrimethoxysilane under a pressure ranging from 1,000 to 4,000 kg/cm.sup.2, and containing said silane compound in an amount of from 0.5 to 2 wt %; (B) from 0.001 to 10 parts by weight of a silanol condensation catalyst; and (C) from 0.01 to 5 parts by weight of a silane compound having a hydrolyzable organic group.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: January 8, 1991
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Iwao Ishino, Akihiko Ohno, Tsutomu Isaka
  • Photoconductive mixed crystals of phthalocyanine compounds and process for producing the same
    Patent number: 4981767
    Abstract: A photoconductive material comprising a mixed crystal of at least two phthalocyanine compounds whose central substances are different from each other, the phthalocyanine compounds being represented by formula (I): ##STR1## wherein A represents a substance capable of bonding to the phthalocyanine ligand through a covalent bond or a coordinate bond. The photoconductive material exhibits stability to heat and light and sufficient sensitivity in the visible to near infrared region.
    Type: Grant
    Filed: June 27, 1989
    Date of Patent: January 1, 1991
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Yoshinori Tokura, Shinichi Suzuki, Junko Gouda, Hideo Toda, Akira Itsubo, Tomoko Sasaki
  • Polyalkenylphenol compound
    Patent number: 4978810
    Abstract: A polyalkenylphenol compound represented by formula (I): ##STR1## wherein R represents a hydrogen atom or a methyl group; X represents a hydrogen atom or a halogen atom; and n represents 0 or an integer of from 1 to 10. The compound is useful as a curing agent for epoxy resins or maleimide resins or a starting material for epoxy resins.
    Type: Grant
    Filed: September 18, 1989
    Date of Patent: December 18, 1990
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Kaoru Kanayama, Shuji Ichikawa
  • Method of inhibiting polymerization of styrenes
    Patent number: 4967027
    Abstract: A method of inhibiting polymerization of styrenes is disclosed, comprising the process of jointly using nitrosophenols and p-tertiarybutyl catecol for composing the polymerization inhibiting agent usable during the distillation process of styrenes.
    Type: Grant
    Filed: June 20, 1989
    Date of Patent: October 30, 1990
    Assignees: Mitsubishi Petrochemical Co., Ltd., Huls Aktiengesellschaft
    Inventors: Hideyuki Takahashi, Shohei Suzuki, Tomohiko Takahama, Tadamichi Aoki, Yoshikazu Higaki, Karl Trukenbrod
  • Aqueous liquid detergents containing an N-acyl-aspartate, amine oxide and alkyl ether sulfate
    Patent number: 4960541
    Abstract: A liquid detergent composition is disclosed, containing (a) an N-acylaspartic acid or a salt thereof, (b) a tertiary alkylamine oxide and (c) an alkyl ether sulfate, the weight composition of the components (a), (b), and (c) falling within the range indicated by a quadrate formed by four points (90,5,5), (75,20,5), (50,20,30), and (65,5,30) in a triangular coordinate constructed by placing the pure components (a), (b), and (c) at the vertices of a regular triangle. The composition exhibits excellent foamability and detergency while retaining mildness to the skin and substantial fluidity.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: October 2, 1990
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventor: Takazumi Kanekiyo
  • Process for removing nitrogen oxides from exhaust gases
    Patent number: 4952545
    Abstract: A process for removing nitrogen oxides from an exhaust gas containing the nitrogen oxides and an arsenic compound, which comprises bringing said exhaust gas into contact with a reducing gas in the presence of a catalyst to reduce the nitrogen oxides in the exhaust gas and render them nontoxic. There are disclosed two types of catalysts: (1) a catalyst comprising (A) an oxide of titanium, (B) an oxide of at least one metal selected from tungsten and molybdenum, (C) an oxide of vanadium, and (D) an oxide and/or a sulfate of at least one metal selected from the group consisting of yttrium, lanthanum, cerium and neodymium, and (2) the above (A), (B), (C) components and (D)' at least one metal selected from the group consisting of yttrium, lanthanum, cerium, neodymium, copper, cobalt, manganese and iron, the component (D)' being deposited on zeolite.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: August 28, 1990
    Assignees: Mitsubishi Petrochemical Co., Ltd., Mitsubishi Jukogyo Kabushiki Kaisha, Catalysts & Chemicals Industries Co., Ltd., Mitsubishi Petrochemical Engineering Co., Ltd.
    Inventors: Makoto Imanari, Takeo Koshikawa, Akihiro Yamauchi, Masayuki Hanada, Morio Fukuda, Kiyoshi Nagano
  • Method for denitrizing nitrogen oxides contained in waste gas
    Patent number: 4952381
    Abstract: A catalyst for denitrizing nitrogen oxides contained in waste gas which contains a substantial amount of arsenic compounds therein, which comprises:(a) titanium, and(b) at least one element selected from the group consisting of arsenic and manganese. The catalyst is resistant to deactivation by arsenic compounds and retains high denitrizing activity over a long period of time. The catalyst may further contain at least one base metal selected from the group consisting of V, W, Mo, Cu, Fe, Cr, Co, Ni, Zn and Sn.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: August 28, 1990
    Assignees: Sakai Chemical Industry Co., Ltd., Mitsubishi Jukogyo Kabushiki Kaisha, Mitsubishi Petrochemical Co., Ltd., Mitsubishi Petrochemical Engineering Co., Ltd., Catalysts & Chemicals Industries Co., Ltd.
    Inventors: Horiaki Rikimaru, Tadao Nakatsuji, Toshikatsu Umaba, Kazuhiko Nagano, Kazuya Mishina, Hiromitsu Shimizu, Shigeru Nojima, Kozo Iida, Yoshiaki Obayashi, Touru Seto, Shigeaki Mitsuoka, Masayuki Hanada, Morio Fukuda, Kiyoshi Nagano, Makoto Imanari, Takeo Koshikawa, Akihiro Yamauchi
  • Multi-layered laminate
    Patent number: 4948671
    Abstract: A transparent resin composition is described, comprising (i) from 65 to 99.9 parts by weight of a modified polyolefin which is at least partially modified with an unsaturated carboxylic acid or the anhydride thereof and having an unsaturated carboxylic acid or anhydride content of from 0.002 to 5 wt %, (2) from 35 to 0.1 parts by weight of a saponified ethylene/vinyl acetate copolymer having an ethylene content of from 25 to 75 mol % and a degree of saponification of at least 96%, and (3) from 0.5 to 200 parts by weight per 100 parts by weight of the copolymer (2) of a plasticizer. Molded articles of the resin composition have excellent transparency, moldability, mechanical strength, moisture barrier property, etc. The resin composition can be easily prepared from trimming wastes, wastes of extrusion or the like of multi-layered articles.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: August 14, 1990
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Masafumi Hattori, Takayuki Inoue, Masahide Ochiumi
  • Secondary battery
    Patent number: 4945014
    Abstract: There is disclosed a secondary battery having a negative electrode composed of an active substance and a carrier carrying the active substance, which comprises(1) the active substance is lithium or an alkali metal mainly composed of lithium,(2) the carrier is a mixture composed of(a) a carbonaceous material having(i) an atomic ratio of hydrogen/carbon of less than 0.15 and(ii) a spacing of (002) planes (d.sub.002) as determined by X-ray wide angle diffraction of 3.37 .ANG. or more and a crystallite size in the direction of c axis of 150 .ANG. or less, and(b) a metal capable of forming an alloy with the active substance and/or an alloy with the active substance.
    Type: Grant
    Filed: February 2, 1989
    Date of Patent: July 31, 1990
    Assignees: Mitsubishi Petrochemical Co., Ltd., Toshiba Battery Co., Ltd.
    Inventors: Mitsutaka Miyabayashi, Toshifumi Nishii, Hiroshi Yui, Kuniaki Inada, Katsuji Ikeda, Hiroyoshi Nose, Kenji Tsuchiya
  • Self-extinguishing polymer composition
    Patent number: 4939195
    Abstract: A self-extinguishing polymer composition consisting of 20 to 70% by weight of thermoplastic resin or elastomer (A), 80 to 30% by weight of a hydroxide of aluminum and/or magnesium (B), and a polymeric charge-transfer type complex (C) in an amount of 0.01 to 10 parts by weight relative to 100 parts by weight of (A) and (B).
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: July 3, 1990
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Iwao Ishino, Nobuhiro Usami, Yayoi Ishikawa
  • Silver-deposited catalyst for production of ethylene oxide
    Patent number: 4939114
    Abstract: A silver-deposited catalyst for the production of ethylene oxide by the oxidation of ethylene, said catalyst comprising(1) a carrier composed mainly of alpha-alumina, which carrier does not show acidity in a visual color change method in a toluene solvent using a dimethyl yellow indicator having a pKa of +3.3, and does not show basicity in a color reaction in a toluene solvent using a bromothymol blue having a pKa of +7.1, and(2) as catalyst components, silver and at least one cationic component selected from sodium, potassium, rubidium and cesium.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: July 3, 1990
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Naohiro Nojiri, Yukio Sakai, Yoshiaki Saotome, Tomoatsu Iwakura
  • Unsaturated copolymer resin composite
    Patent number: 4939209
    Abstract: A polymer prepared by subjecting to conditions of radical graft polymerization a copolymer of an .alpha.-olefin and an aliphatic nonconjugated diene and a monomer that is capable of radical polymerization with said copolymer is described. This polymer has high miscibility with a dissimilar resin and has a high practical value for use as a compatibilizing agent in blending two or more resins.
    Type: Grant
    Filed: November 1, 1989
    Date of Patent: July 3, 1990
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Sadao Kitagawa, Masaki Saito, Shiroh Gotoh, Shin-ichi Yamauchi
  • Novel 2-nitro-5-(substituted phenoxy)benzohydroximic acid derivatives
    Patent number: 4931088
    Abstract: A compound of the formula ##STR1## in which each of X and Y represents a halogen atom, R represents a hydrogen atom, a lower alkyl group or an agronomically acceptable soluble salt ion, R.sup.1 represents a lower alkyl group, R.sup.2 represents a hydrogen atom or a lower alkyl group, and Z represents an oxygen or sulfur atom. This compound is useful as herbicide.
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: June 5, 1990
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Atsushi Goh, Keiji Endo, Yuri Yamamoto
  • Copper conductive coating composition
    Patent number: 4921623
    Abstract: A copper-type conductive coating composition which comprises:(A) a copper powder,(B) a coating binder resin, and(C) at least one number selected from the group consisting of salicylic acid, its specific derivatives, and benzotriazolecarboxylic acid hydrazides.The copper-type conductive coating composition provides a conductive coating layer having excellent initial conductivity and capable of maintaining the level of it stable over a long period of the time.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: May 1, 1990
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Shoji Yamaguchi, Kimiko Yamada, Katsuyoshi Yada, Koichi Sakaguchi, Hiromu Inoue
  • Method of preparing L-malic acid
    Patent number: 4912043
    Abstract: An aqueous solution containing fumaric acid is reacted in the presence of an aerobically cultured product of a microorganism belonging to the Brevibacterium genus and having resistance to .alpha.-aminobutyric acid, whereby L-malic acid is produced.
    Type: Grant
    Filed: May 19, 1986
    Date of Patent: March 27, 1990
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Masato Terasawa, Terukazu Nara, Hideaki Yukawa, Hisashi Yamagata, Yukie Satoo
  • Plating bath for electrodeposition of aluminum and plating process making use of the bath
    Patent number: 4906342
    Abstract: In the plating for electrodeposition of aluminum using a non-aqueous solution, a plating bath is prepared to comprise a low-melting plating bath, which comprises a molten mixture comprising an aluminum halide and a dialkyl-and/or trialkylpyridinium halide represented by the following formula: ##STR1## wherein R.sup.1 represents an alkyl group having 1 to 12 carbon atoms, R.sup.2 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, R.sup.3 represents an alkyl group having 1 to 6 carbon atoms, and X represents a halogen atom; and said alkyl groups each refer to a straight-chain hydrocarbon group, a branched hydrocarbon group, an alicyclic hydrocarbon group, or any of these further partly containing an aromatic hydrocarbon group,by which the bath life, operability in handling, conductivity, and current efficiency can be improved.
    Type: Grant
    Filed: April 19, 1989
    Date of Patent: March 6, 1990
    Assignees: Nisshin Steel Co., Ltd., Mitsubishi Petrochemical Co., Ltd.
    Inventors: Setsuko Takahashi, Isao Saeki, Shoichiro Mori, Ida Kazuhiko
  • Process for preparing p-cumylphenol
    Patent number: 4906791
    Abstract: A process for preparing p-cumylphenol which comprises reacting phenol and .alpha.-methylstyrene in the presence of an inorganic solid acid catalyst having an acid point of an acid strength Ho of up to -3, for example, activated clay and recovering the aimed p-cumylphenol from the reaction mixture thus obtained by distilling the same while introducing an inert gas such as nitrogen and/or steam into the distillation system is disclosed. The p-cumylphenol thus obtained has a high purity and an improved color compared with those obtained by conventional methods.
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: March 6, 1990
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Makoto Imanari, Hiroshi Iwane, Takahiro Sugawara, Satoshi Ohtaka, Masashi Inaba, Mitsugi Kataoka