Patents Assigned to Mitsui
  • Method for preparing epichlorohydrins
    Patent number: 4876372
    Abstract: The present invention is directed to a method for preparing epichlorohydrins by epoxidizing allyl chlorides with an organic hydroperoxide, and the epoxidation reaction is performed in the presence of a catalyst having titanium atoms bound to a silicon dioxide carrier and having silanol groups on the same carrier, whereby epichlorohydrins are obtained in high yield.
    Type: Grant
    Filed: April 13, 1988
    Date of Patent: October 24, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Takehisa Nakanishi, Eizi Koga, Isao Fukada
  • Polyester composition, molded polyester laminate and use thereof
    Patent number: 4874647
    Abstract: A transparent, heat resistant polyester composition having improved mechanical strength is provided, which comprises (A) 20 to 80% by weight of a polyalkylene terephthalate predominantly comprising ethylene terephthalate and having an intrinsic viscosity of from 0.6 to 1.2 dl/g, and (B) 20 to 80% by weight of a bisphenol-A polycarbonate having an intrinsic viscosity of from 0.6 to 1.2 dl/g, the composition having an intrinsic viscosity of from 0.6 to 1.2 dl/g and a single glass transition temperature of from 80.degree. to 130.degree. C. A polyester laminate may be molded as comprising a layer of the polyester composition and a layer of alkylene terephthalate. The molded polyester laminate can take any form including films and containers.
    Type: Grant
    Filed: November 28, 1988
    Date of Patent: October 17, 1989
    Assignee: Mitsui Petrochemical Industries, Inc.
    Inventors: Tadao Yatsu, Yoshinori Akana
  • Process for producing solid catalyst for polymerization of olefins
    Patent number: 4874734
    Abstract: A process for producing a solid catalyst for polymerization of olefins, which comprises bringing a solution of an aluminoxane into contact with a suspension of a particulate carrier having supported thereon a compound of a transition metal of Group IVB of the periodic table in a solvent in which the aluminoxane is insoluble or sparingly soluble. In another aspect, the invention provides a process for producing a solid catalyst for polymerization of olefins, which comprises bringing a suspension of a particulate carrier having supported thereon a compound of a transition metal of Group IVB of the periodic table in a solution of an aluminoxane into contact with a solvent in which the aluminoxane is insoluble or sparingly soluble.
    Type: Grant
    Filed: March 29, 1988
    Date of Patent: October 17, 1989
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Mamoru Kioka, Norio Kashiwa
  • Process for preparation of 3-phenoxybenzyl 2-(4-alkoxyphenyl)-2-methylpropyl ethers
    Patent number: 4873373
    Abstract: Disclosed is a process for preparing 3-phenoxybenzyl 2-(4-alkoxyphenyl)-2-methylpropyl ethers represented by the following formula (I): ##STR1## wherein R stands for a lower alkyl group, and X.sub.1 and X.sub.2 stand for a hydrogen atom or fluorine atom,which comprises subjecting a 3-phenoxybenzyl 2-(4-alkoxy-3-halogenophenyl)-2-methylpropyl ether or 3-phenoxybenzyl-2-(4-alkoxy-3,5-dihalogenophenyl)-2-methylpropyl ether represented by the following formula (II): ##STR2## wherein R stands for a lower alkyl group, X.sub.1 and X.sub.2 stand for a hydrogen atom or fluorine atom, and Y.sub.1 and Y.sub.2 stand for a hydrogen atom, chlorine atom, bromine atom or iodine atom, with the proviso that at least one of Y.sub.1 and Y.sub.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: October 10, 1989
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Mitsumasa Umemoto, Tamotsu Asano, Hironobu Horie, Akinobu Takagi, Nobuyasu Tamura, Takeshi Nishida
  • Preparation process of 4,4'-biphenol, precursor of same and preparation process of precursor
    Patent number: 4873374
    Abstract: A novel compound, 4-(4-hydroxyphenyl)-3-cyclohexene-1-ol, and a novel preparation process of 4,4'-biphenol by using the novel compound as the raw material.4-(4-Hydroxyphenyl)-3-cyclohexene-1-ol can be obtained by conducting a thermal decomposition reaction of 4,4-bis(4-hydroxyphenyl)cyclohexanol. 4,4'-Biphenol can be industrially manufactured by conducting a dehydrogenation reaction of 4-(4-hydroxyphenyl)-3-cyclohexene-1-ol.
    Type: Grant
    Filed: April 6, 1988
    Date of Patent: October 10, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Tohru Miura, Teruyuki Nagata, Koju Okazaki, Masayuki Furuya, Emiko Nishida
  • Process for producing diphenylamines or N,N'-diphenylphenylenediamines
    Patent number: 4871875
    Abstract: Diphenylamines or N,N'-diphenyl-phenylenediamines can be obtained by heat-reacting an aniline or a phenylenediamine with preferably an excess of a phenol in an amount of 4 to 20 moles per mole of the aniline or phenylenediamine in the presence of a hydrogen transfer catalyst and a cyclohexanone corresponding to said phenol.The excess phenol used in the reaction undergoes reduction in the reaction system to form a cyclohexanone, which in turn reacts with the aniline or phenylenediamine to form a Schiff base and is thus consumed. The Schiff base forms the intended product by means of a dehydrogenation reaction, and the hydrogen evolved at this time reduces the phenol to form a cyclohexanone.The phenol present in excess thus becomes in the system a solvent, a starting material for the cyclohexanone, and an acceptor of the hydrogen that forms as a by-product at the time of formation of the intended product.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: October 3, 1989
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Teruyuki Nagata, Akihiro Tamaki, Nobuyuki Kajimoto, Masaru Wada
  • Method for preparing aluminum nitride and its sinter
    Patent number: 4869925
    Abstract: A method for preparing high-purity aluminum nitride having high thermal conductivity and heat resistance for aluminum nitride substrates, which comprises the steps of reacting an organic aluminum compound with an aminotriazine in a solvent to obtain an aluminum nitride precursor, separating the precursor from the solvent, and heating the precursor at a temperature of 600.degree. C. or more in a reducing atmosphere and/or a non-oxidizing atmosphere. An aluminum nitride sinter is prepared by, if necessary, adding a sintering auxiliary to the above aluminum nitride powder, molding the powder into a desired shape, and then sintering the molded material at a temperature of 1,600.degree. to 2,000.degree. C. in a non-oxidizing atmosphere.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: September 26, 1989
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Atsuhiko Hiai, Kazuo Wakimura, Masao Tanaka, Takao Tanaka
  • N-(2-chloro-4-nitrophenyl)-(benzenesulfonamide derivative and agricultural fungicide containing same
    Patent number: 4870107
    Abstract: Disclosed herein are N-(2-chloro-4-nitrophenyl)-benzenesulfonamide derivatives represented by the following general formula (I): ##STR1## wherein X and Y individually mean a hydrogen or chlorine atom and Z denotes a chlorine atom or trifluoromethyl group, and agricultural fungicides containing said derivatives.
    Type: Grant
    Filed: October 7, 1987
    Date of Patent: September 26, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Takeo Yoshimoto, Mitsumasa Umemoto, Keiichi Igarashi, Yutaka Kubota, Hideo Yamazaki, Yuji Enomoto, Hirohisa Yanagita
  • Molecular oriented, silane-crosslinked ultra-high-molecular-weight polyethylene molded article and process for preparation thereof
    Patent number: 4870136
    Abstract: If ultra-high-molecular-weight polyethylene having an intrinsic viscosity (.eta.) of at least 5 dl/g is grafted with a silane compound in the presence of a radical initiator and extrusion-molded and the extrudate is impregnated with a silanol condensation catalyst after or during drawing and is then exposed to water to effect crosslinking, there is obtained a novel molecularly oriented molded articles in which increase of the melting temperature, which is not observed in conventional draw-molded or crosslinked molded articles of polyethylene, can be attained, and even if this molecularly oriented molded article is exposed to a temperature of 180.degree. C. for 10 minutes, the molded article is not fused but the shape is retained and even after this heat history, a high strength retention ratio can be maintained.
    Type: Grant
    Filed: November 25, 1986
    Date of Patent: September 26, 1989
    Assignee: Mitsui Pertrochemical Industries, Ltd.
    Inventors: Kazuo Yagi, Hitoshi Mantoku
  • Polypropylene sheet for press-through packages, production process thereof, and polypropylene resin composition
    Patent number: 4869938
    Abstract: Disclosed herein is a polypropylene sheet obtained by forming a resin composition, which contains a polypropylene resin and a hydrogenated petroleum resin in specific amounts, into a sheet at a particular chill-roll temperature and then annealing the sheet at a specific temperature for a specific period of time as well as an improved production process of such a polypropylene sheet. Also disclosed is a polypropylene sheet comprising a sheet obtained from the above resin composition and a polypropylene layer of at least 10 .mu.m thick applied on at least one side of the sheet. A polypropylene resin composition suitable for the production of such polypropylene sheets is also disclosed. The above polypropylene sheets are suitable for use in press-through packages.
    Type: Grant
    Filed: August 22, 1986
    Date of Patent: September 26, 1989
    Assignee: Mitsui Toatsu Chemicals Inc.
    Inventors: Katsuyuki Usami, Toru Ueki, Hajime Sentoku, Takashi Takahashi, Kazuharu Kanezaki
  • Heat-foamable crosslinked propylene resin composition in the form of a melt-shaped sheet structure
    Patent number: 4870114
    Abstract: A heat-foamable crosslinked propylene resin composition in the form of a melt-shaped sheet structure comprising[1] 100 parts by weight of a crosslinked propylene resin composition obtained by mixing at least four components composed of (A) a propylene resin, (B) an olefin resin other than the resin (A), (C) a radical initiator and (D) a crosslinking agent, and[2] 0.5 to 5 parts by weight of a blowing agent; wherein(a) the propylene resin (A) is in an amount of 60 to 95 parts by weight per 100 parts by weight of the resins (A) and (B) combined, and has a melt flow rate (MFR) of 0.1 to 50 g/10 min.
    Type: Grant
    Filed: January 23, 1986
    Date of Patent: September 26, 1989
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Takashi Hashimoto, Zenichi Sasaki
  • Preparation of monosialoganglioside
    Patent number: 4868292
    Abstract: Monosialoganglioside is prepared by heating ganglioside at a temperature higher than 50.degree. C. in a liquid medium containing water.
    Type: Grant
    Filed: July 22, 1986
    Date of Patent: September 19, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Tatsuro Yokoyama, Haruki Mori, Masanobu Arita, Atsushi Kojima
  • Manifold and manufacturing method thereof
    Patent number: 4864978
    Abstract: A structure and a method of manufacture of a manifold which is to be mounted either on the intake side or on the exhaust side of an internal combustion engine, which is formed by projecting branch pipes from one side of a pipe member in the form of straight pipes. The manifold is further provided with grooves for gas leakage prevention and for rotation prevention at the connection between branch pipes and flanges caulked to the free ends thereof.
    Type: Grant
    Filed: October 27, 1987
    Date of Patent: September 12, 1989
    Assignees: Mitsui & Co., Ltd., Kokan Kako Co., Ltd.
    Inventor: Kazuhito Fukazawa
  • Additive for stock feeds, stock feed containing additive, and process for preparation of additive
    Patent number: 4865852
    Abstract: An additive for stock feeds containing decomposition products of chicory roots in which the total content of polysaccharides and inulooligosaccharides of tri- and higher saccharides obtained by decomposing the chicory roots is 40% by weight or more of the total solids content and is 80% by weight or more of the total saccharides. The stock feed preferably contains 0.1 to 10% by weight of the additive. The additive is prepared by a process which comprises the steps of chopping and then heating/drying chicory roots in order to form chicory flakes, and grinding the chicory flakes, or by a process which comprises the step of enzymatically decomposing the chicory roots without an extraction step.
    Type: Grant
    Filed: June 3, 1988
    Date of Patent: September 12, 1989
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Hiroaki Tamatani, Kazuo Takahashi, Kazuo Sato, Kiyoshi Mizushima, Fuminobu Yoshimi, Sohei Morita
  • Process for producing thermosetting resins
    Patent number: 4865795
    Abstract: In a process for producing thermosetting resins by the polymerization reaction of a cyclic carbonate with a polyvalent isocyanate compound, potassium fluoride is used as the catalyst. If desired, a co-catalyst selected from the group consisting of polyethylene oxides, cryptands and quaternary onium salts is additionally used. The thermosetting resins so produced have excellent impact stength and, therefore, are useful as molded materials and various substrates.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: September 12, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Tetsunosuke Shiomura, Yoshiho Sonobe, Akihiro Yamaguchi
  • Composition for curable paints
    Patent number: 4863988
    Abstract: A composition for curable paints, comprising(A) 100 parts by weight of a resin for curable paints, and(B) 0.5 to 10 parts by weight of chlorinated and graft-modified polypropylene which is produced by chlorinating polypropylene graft-modified with a grafting component selected from the group consisting of alpha,beta-unsaturated dicarboxylic acids, anhydrides thereof and esters thereof, and which has a chlorine content of 5 to 50% by weight, said graft-modified polypropylene having a degree of saponification of 5 to 150 mg/g and an intrinsic viscosity [.eta.] of 0.1 to 5 dl/g. A curable paint comprising the composition and a diluent.
    Type: Grant
    Filed: October 13, 1988
    Date of Patent: September 5, 1989
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Hajime Inagaki, Tadao Saitoh
  • Zinc-alkaline battery
    Patent number: 4861688
    Abstract: This invention uses as the anode active material a zinc alloy containing Ni, at least one element selected from In, Pb, Ga and Cd and, optionally further, one element selected from Al, Mg, Ca, Ba and Sr for the anode of a conventional zinc-alkaline battery which employs zinc as the anode active material, aqueous alkaline solution as the electrolyte, and manganese dioxide, silver oxide, oxygen and so forth as the cathode active material. The use of such zinc alloy permits the reduction of the amount of mercury to be used for amalgamation of the anode zinc surface which is made for the purpose of corrosion inhibition, thereby enabling the provision of a low-pollution zinc-alkaline battery.
    Type: Grant
    Filed: March 19, 1987
    Date of Patent: August 29, 1989
    Assignees: Matsushita Electric Indus. Co. Ltd., Mitsui Mining & Smelting Co., Ltd.
    Inventors: Akira Miura, Kanji Takata, Ryoji Okazaki, Toyohide Uemura, Keiichi Kagawa
  • Apparatus for connecting a handle and a locking device on automotive doors
    Patent number: 4861081
    Abstract: In the connecting apparatus of this invention for coupling the handle and the locking device, the connector rotatably mounted on the handle or the locking device has a pair of oppositely directed hooks with a gap therebetween. The hooks have a first raised or recessed surface such as threaded grooves on their inner surfaces. The rod has formed on one end a second raised or recessed surface for engagement with the first raised or recessed surface on the hooks. These raised or recessed surfaces of the hooks and the rod can easily be engaged by first putting the second raised or recessed surface of the rod in the gap of the connector and turning the connector by 90.degree..
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: August 29, 1989
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventor: Seiki Satoh
  • Optical recording medium
    Patent number: 4859569
    Abstract: An optical recording medium comprising practically a naphthalocyanine dye represented by the following general formula (I): ##STR1## wherein M means a metal, metal oxide or metal halide, and --OR.sub.1, --OR.sub.2, --OR.sub.3 and --OR.sub.4 are the same or different and denote ether groups respectively having R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each of which is a saturated or unsaturated hydrocarbon group having 4-12 carbon atoms.
    Type: Grant
    Filed: November 10, 1987
    Date of Patent: August 22, 1989
    Assignees: Mitsui Toatsu Chemicals, Incorporated, Yamamoto Chemicals, Inc.
    Inventors: Sumio Hirose, Hiroshi Ozawa, Kenji Abe, Yoichi Hosono, Shigeru Takahara, Tadashi Koike
  • Preparation process of dl-lactic acid-glycolic acid-copolymer
    Patent number: 4859763
    Abstract: A process for copolymerizing lactide and glycolide by using a specific amount of stannous octoate as a catalyst in the presence of a polymerization regulator at temperature of 200.degree.-230.degree. C. to prepare dl-lactic acid-glycolic acid-copolymers which contain 50-60 mol % of a dl-lactic acid unit and 40-50 mol % of a glycolic acid unit and have inherent viscosity of 0.4-0.6 in chloroform.
    Type: Grant
    Filed: July 8, 1988
    Date of Patent: August 22, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hiroshi Takayanagi, Tadashi Kobayashi, Takayoshi Masuda, Hosei Shinoda