Patents Assigned to Mitsui
  • Polypropylene resin compositions
    Patent number: 5153249
    Abstract: A polypropylene resin composition comprising 100 parts by weight of a polypropylene resin, 0.01 to 1.0 part by weight of 1.3, 2.4-di-benzylidene sorbitol and 0.005 to 1.0 part by weight of talc. The components of the polypropylene resin composition are not guided and do not escape from the composition even when it is immersed in hot water. The composition is excellent in transparency and products obtained by blow molding of the composition are also excellent in transparency.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: October 6, 1992
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Sachio Yokote, Yoichi Kawai, Masaki Misumi
  • Method for forming window material for solar cells and method for producing amorphous silicon solar cell
    Patent number: 5151255
    Abstract: A method for forming a dihydride rich amorphous silicon semiconductor film suitable for use as a window material of solar cells only from a silicon material, which comprises decomposing a gaseous mixture composed of disilane, a dopant capable of imparting p-type electrical conductivity and a diluent gas by applying a glow discharge energy, and thereby forming a semiconductor film having an optical band gap of at least 1.8 eV, preferably more than 1.9 eV, on a substrate.
    Type: Grant
    Filed: October 3, 1990
    Date of Patent: September 29, 1992
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Nobuhiro Fukuda, Sadao Kobayashi, Kenji Miyachi, Hidemi Takenouchi, Yoji Kawahara, Takayuki Teramoto
  • Resin compositions having improved antistatic properties
    Patent number: 5151457
    Abstract: A resin composition having excellent antistatic properties and practical physical properties. The resin comprises (i) a styrene resin; (ii) a polyethylene oxide having a viscosity-average molecular weight ranging from 15,000 to 1,200,000; (iii) either or both of a (meth) acrylate resin and an oxide selected from the group consisting of titanium oxide, zinc oxide and magnesium oxide; (iv) either a surfactant selected from specific sulfonic acid salts or a surfactant selected from specific alkyl sulfates; and, optionally, (v) a (poly)ethylene glycol having an average molecular weight ranging from 62 to 1,200. The resin composition also provides excellent resistance to hot water.
    Type: Grant
    Filed: October 22, 1991
    Date of Patent: September 29, 1992
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Yuzuru Ishida, Haruo Inoue, Ichiro Otsuka, Masato Takaku, Masahiro Mitsuboshi, Keiji Iio, Atsushi Hashimoto
  • Method for producing of human tissue type plasminogen activator
    Patent number: 5151359
    Abstract: A method for the production of human tissue type plasminogen activator (tPa) using cells is disclosed. The method includes a supplementation of a p-aminomethyl benzoic acid derivative to a cell culture medium or a tPA producing medium and further an increase of osmotic pressure in the medium to 350 milliosmoles or more/liter. The invention provides a method for producing single-chain tPA in a high concentration and with a relatively small amount of double-chain tPA in the medium.
    Type: Grant
    Filed: May 5, 1989
    Date of Patent: September 29, 1992
    Assignee: Mitsui Toatsu Chemicals Incorporated
    Inventors: Shyoichiro Miyahara, Maki Suzuki, Atsunori Shindo, Nobumi Kusuhara, Nobuyoshi Makiguchi
  • Process for the catalyic decomposition of chlorofluoro-alkanes
    Patent number: 5151263
    Abstract: A process for the catalytic decomposition of chlorofluoro-alkanes commonly named as "flons" into harmless substances against destructing ozone layer of the stratosphere by using the catalyst comprising alumina or alumina -silica complexed oxide, wherein the range of Al/(Al+Si)atomic ratio is 1.0 to 0.5, in the presence of steam at the temperature of 350.degree. to 1.000.degree. C.
    Type: Grant
    Filed: July 25, 1990
    Date of Patent: September 29, 1992
    Assignee: Dupont-Mitsui Fluorochemicals Co., Ltd.
    Inventors: Susumu Okazaki, Akito Kurosaki
  • Resin compositions including ceramics emitting far infrared rays
    Patent number: 5151463
    Abstract: Resin compositions comprising hygroscopic resins of relatively high water absorption rate, including (or coated by, or covered by) ceramics capable of emitting far infrared rays. The resin compositions are useful as materials of devices or receptacles for maintaining freshness of food or water.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: September 29, 1992
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Koji Hayafune, Shinichi Naemura, Hiroshige Yasumoto, Hideo Amemiya
  • Electrofusion joint and hot water supply header using the same
    Patent number: 5150922
    Abstract: The improved electrofusion joint and header for supplying hot water that perform satisfactorily at elevated temperatures as evidenced by high heat resistance, that exhibit good sealing property and that can be handled efficiently in mounting and various other operations have a crosslinked thermoplastic resin layer and at least one joining portion which comprises a non-crosslinked thermoplastic resin layer that is formed a as an integral part of said crosslinked thermoplastic resin layer in the area where it contacts a tubular member to be joined, and a heating electric wire provided either within or on the outer or inner surface of said non-crosslinked thermoplastic resin layer. Such electrofusion joint and header are applicable to any part of a piping system for supplying hot water and they will withstand use for a prolonged period.
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: September 29, 1992
    Assignees: Osaka Gas Co., Ltd., Mitsui Petrochemical Ind., Ltd., Shinwa Sangyo Co., Ltd.
    Inventors: Akio Nakashiba, Hiroyuki Nishimura, Fumio Nagatani, Kazunori Mito, Toshio Shibabuchi, Mikio Nakaoka
  • Conductive resin composition
    Patent number: 5149465
    Abstract: A conductive resin composition which has electrical conductivity and antistatic property, is excellent in heat resistance and processability, and comprises:(A) from 50 to 95% by weight of a polyphenylene ether resin,(B) from 50 to 5% by weight of a copolymer of a styrenic compound and an .alpha.,.beta.-unsaturated dicarboxylic acid imide compound,(C) from 5 to 30 parts by weight of a conductive carbon per 100 parts by weight of the sum of the resin (A) and the copolymer (B), and (D) from 1 to 20 parts by weight of a low molecular weight polystyrene per 100 parts by weight of the sum of the resin (A) and the copolymer (B).
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: September 22, 1992
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Toru Ueki, Kenji Sakata, Masaji Yoshimura, Kazuharu Kanezaki, Ineo Iwata
  • 2,6-di,2,4,6-, 2,5,6-tri and 2,4,5,6-tetra-substituted pyrimidines, their pharmaceutically acceptable salts, pharmaceutical compositions containing same and their use in the treatment of neurological diseases
    Patent number: 5147876
    Abstract: 2,6-di-, 2,4,6-, 2,5,6-tri- or 2,4,5,6-tetra-substituted pyrimidines, and 2,6-di-substituted pyridines. These compounds are useful for treatment of neurological diseases.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: September 15, 1992
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Akira Mizuchi, Kazutoshi Horikomi, Tadayuki Sasaki, Akira Awaya, Ikuo Tomino, Mitsuyuki Takesue, Noriaki Kihara
  • Production process of chlorine
    Patent number: 5147624
    Abstract: Chlorine can be efficiently produced at a low temperature and with a high hourly space velocity by oxidizing hydrogen chloride with an oxygen-containing gas in the presence of a catalyst obtained by calcining a compound, which has in turn been obtained by reacting chromium nitrate, chromium chloride, the chromium salt of an organic acid or the like with ammonia, or by calcining a mixture of the compound and a silicon compound, preferably, at a temperature lower than 800.degree. C.
    Type: Grant
    Filed: September 16, 1991
    Date of Patent: September 15, 1992
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Tadamitsu Kiyoura, Masanobu Ajioka, Naoshi Fujimoto, Toshihide Suzuki, Yasuo Kogure, Tokio Nagayama, Kazuo Kanaya
  • Vehicle door lock device
    Patent number: 5146772
    Abstract: A vehicle door lock device has a synthetic resin made body and a back plate attached on the rear side of the body. A lock lever is journalled between the back plate and the body in order to change-over the lock device between its locked condition and unlocked condition. A plastic made actuator box containing a power source for powerfully changing-over the lock lever is placed below the body. A switch box is formed at a rear side of the box and a switch body is contained in the switch box. A rotation shaft of the switch body protrudes rearward through the switch box and a switch arm is secured to the protruded portion of the rotation shaft. At the overlap position of the connecting lever and the lock lever, the connecting lever is installed rotatably, one end of the lever being connected to the switch arm and another end of it being connected to the key cylinder of a door or the lock lever.
    Type: Grant
    Filed: February 21, 1991
    Date of Patent: September 15, 1992
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Yoshikazu Hamada, Yozo Ogino
  • Method for polymerizing vinyl chloride while inhibiting adhesion to the polymerization reactor with coating from poly(hydricphenol sulfide)
    Patent number: 5147948
    Abstract: A method for polymerizing vinyl chloride comprises polymerizing vinyl chloride in an aqueous medium or bulk-polymerizing vinyl chloride, wherein the inner wall of a polymerizer and parts of devices which come in contact with the monomer during the polymerization are coated, prior to the polymerization, with a reaction product having a molecular weight ranging from 500 to 100,000, obtained by condensing a polyhydric phenol and sulfur dichloride in the presence of a Lewis acid as a catalyst. The amount of the polymer adhered to the polymerizer during polymerization of vinyl chloride is substantially lowered and the adhered polymer can be easily washed away through simple water washing according to the foregoing method. Moreover, the method does not adversely affect the reaction time and the quality of the resulting product at all.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: September 15, 1992
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Seiichi Masuko, Ichisaburo Nakamura, Keiichi Fukuda, Yasuyuki Hatakeyama, Akihiro Yamaguchi, Keizaburo Yamaguchi
  • Woven fabric high-purity alumina continuous filament, high-purity alumina filament for production thereof, and processes for production of woven fabric and continuous filament
    Patent number: 5145734
    Abstract: Disclosed are a high-purity alumina continuous filament woven fabric comprising a high-purity alumina continuous filament having an alumina content of at least 95% by weight and a filament diameter of 5 to 20 .mu.m, a hybrid woven fabric comprising this high-purity alumina continuous filament and a high-strength continuous filament having a tensile stength of at least 200 kg/mm.sup.2, processes for the preparation of these woven fabrics, a high-purity alumina continuous filament valuable for the production of these woven fabrics, and a process for the preparation of this high-purity alumina continuous filament. These woven fabrics are very useful as a reinforcing fibrous substrate of a fiber-reinforced composite material or as a heat-insulating material.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: September 8, 1992
    Assignees: Kanebo Limited, Mitsui Mining Company, Limited
    Inventors: Takashi Ito, Osamu Iwasaki, Akimicu Ohuchi, Koichiro Otomo, Yoshiaki Saito
  • High surface hardness transparent resin prepared from a compound having terminal isopropenyl phenyl groups
    Patent number: 5145927
    Abstract: The present invention relates to a transparent resin which has a high surface hardness and which is excellent in scratch resistance, heat resistance and chemical resistance, a glazing material, a protective cover for display devices, an optical lens and a hard coat material comprising the above-mentioned resin, and a novel polymerizable monomer represented by the formula (I) useful as a raw material for the high surface hardness transparent resin. ##STR1## wherein R is an aliphatic residue having or not having an oxygen atom, an alicyclic ring, a heterocyclic ring or an aromatic ring, or an alicyclic residue, l is 0 or 1, each of i and j is an integer of 1 or more, and when l=0, i=j=1, when l=1, (i+j) is 4 or less, when j=1, X is oxygen or sulfur, when j.gtoreq.2, all X's are oxygen or sulfur, or one X is oxygen and the other X's are sulfur, or one X is sulfur and the other X's are oxygen.
    Type: Grant
    Filed: March 1, 1990
    Date of Patent: September 8, 1992
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Toshiyuki Suzuki, Katsuyoshi Sasagawa, Masao Imai, Yoshinobu Kanemura
  • Production process for making aromatic amine resins
    Patent number: 5145949
    Abstract: Disclosed herein is an aromatic amine resin formed of a mixture of aromatic amine compounds represented by the following general formula (a): ##STR1## wherein A means a phenylene, alkyl-substituted phenylene, diphenylene, diphenyl ether or naphthylenyl group, R.sup.1 denotes a halogen atom or a hydroxyl, C.sub.1-4 alkoxy or C.sub.1-5 alkyl group, l stands for 1 or 2, m is an integer of 0-3, when m is 2 or 3, R.sup.1 s may be the same or different and two of R.sup.1 s may join together into a 5- to 6-membered alicyclic moiety which may optionally contain one or more side chains, and n stands for an integer of 0-300.
    Type: Grant
    Filed: January 22, 1992
    Date of Patent: September 8, 1992
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Keizaburo Yamaguchi, Yoshimitsu Tanabe, Tatsuhiro Urakami, Akihiro Yamaguchi, Norimasa Yamaya, Masahiro Ohta
  • Olefin polymerization catalyst and process for the polymerization of olefins
    Patent number: 5145818
    Abstract: In accordance with the present invention, there are provided olefin polymerization catalysts comprising[A] a titanium catalyst component containing titanium, magnesium and halogen as its essential ingredients,[B-1] a transition metal compound containing a ligand having a cycloalkadienyl skeleton,[C] an organoaluminum oxy-compound and, if necessary,[D] an organoaluminum compound.Further, in accordance with the invention, there are provided olefin polymerization catalysts comprising[A] a titanium catalyst component containing titanium, magnesium and halogen as its essential ingredients,[B-2] a transition metal compound containing a ligand having a cycloalkadienyl skeleton and an anion compound containing boron, and[C] an organoaluminum compound and/or an organoaluminum oxy-compound.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: September 8, 1992
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Toshiyuki Tsutsui, Kenji Sugimura, Takashi Ueda
  • Process for producing p-hydroxyneophyl m-phenoxybenzyl ether
    Patent number: 5144083
    Abstract: A process for producing a p-hydroxyneophyl m-phenoxybenzyl ether represented by the general formula (II) ##STR1## (X.sub.1 and X.sub.2 are independently a hydrogen atom or a halogen atom) by subjecting a corresponding p-alkoxyneophyl m-phenoxybenzyl ether represented by the general formula (I) ##STR2## (R represents a lower alkyl group, and X.sub.1 and X.sub.2 have the same definitions as above) to ether cleavage, in which process the ether cleavage reaction is effected in an aprotic polar solvent, using a lower alkoxide of an alkali metal or an alkaline earth metal or using a metal hydroxide in the presence of a lower alcohol.
    Type: Grant
    Filed: October 2, 1990
    Date of Patent: September 1, 1992
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hideyuki Akieda, Naoki Sato, Koichi Morinaga, Yoshinori Ide, Ryuichi Mita, Mitsumasa Umemoto
  • Method for preparing acrolein or methacrolein
    Patent number: 5144090
    Abstract: A method for preparing acrolein or methacrolein comprises subjecting propylene, secondary propanol, isobutylene or tertiary butanol to gas phase catalytic oxidation with molecular oxygen in the presence of a catalyst represented by the following general formula (I):Mo.sub.a Bi.sub.b Fe.sub.c X.sub.d Y.sub.O Z.sub.f O.sub.g (I)wherein X represents at least one element selected from the group consisting of Ni and Co; Y represents at least one element selected from the group consisting of K, Rb, Cs and Tl; and Z represents at least one element selected from the group consisting of Be, Mg, Ca, Sr, Ba, Ce, Ti, Zr, Nb, Cr, W, Mn, Cu, Ag, Zn, Cd, B, Al, Si, Ge, Sn, Pb, P, As, Sb, S, Se and Te; a, b, c, d, e, f and g each represents an atomic ratio of the corresponding element and when a is assumed to be 12, b=0.1.about.10, c=0.1.about.20, d=2.about.20, e=0.01.about.2, f=0.about.
    Type: Grant
    Filed: June 6, 1991
    Date of Patent: September 1, 1992
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Tadatoshi Honda, Tokio Nagayama, Nobuhiko Horiuchi, Jun Kitagawa, Kazunori Kawahara, Masami Murakami
  • Aquatic plant cutting apparatus and aquatic plant recovery boat equipped with the apparatus
    Patent number: 5142849
    Abstract: An aquatic plant cutting apparatus comprises a first fixed edge having a ribbon-like shape and having a cutting edge portion at its edge and at least one rotary edge juxtaposed along the front edge portion of the first fixed edge, and an aquatic plant recovery boat is constituted by fitting the aquatic plant cutting apparatus to floating means having a propeller through a connection member.
    Type: Grant
    Filed: June 5, 1991
    Date of Patent: September 1, 1992
    Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.
    Inventors: Tomohiko Amimoto, Shoji Takeuchi
  • Processes for preparing electret filters
    Patent number: 5143767
    Abstract: Provided herein is a process for preparing an electret filter which comprises feeding a non-woven fabric composed of an electrically charged web of synthetic fibers through a nip of co-operating embossing and flat rolls under pressure and at a temperature below a softening temperature of said synthetic fibers, thereby subjecting the surface of said non-woven fabric to partical fusion bonding and integration.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: September 1, 1992
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Satoshi Matsuura, Masayuki Mito, Yoshio Shinagawa