Patents Assigned to Mitsui
  • Patent number: 5536773
    Abstract: Disclosed are a polypropylene resin composition comprising a crystalline polypropylene having a high stereoregularity and a terpene resin and a petroleum resin each having no polar group; a polypropylene stretched film formed from the polypropylene resin composition; and a polypropylene multi-layer stretched film having a base layer formed from the polypropylene resin composition and a surface layer formed from a polypropylene type polymer. The polypropylene stretched film and a polypropylene multi-layer stretched film have excellent water-vapor barrier properties and transparency, and a high Young's modulus.
    Type: Grant
    Filed: July 14, 1994
    Date of Patent: July 16, 1996
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Masaya Yamada, Michio Toriumi, Yasuo Futami, Tetsunori Shinozaki, Mamoru Kioka
  • Patent number: 5536878
    Abstract: Disclosed are (1) a method for preparing an aromatic secondary amino compound which comprises reacting an N-cyclohexylideneamino compound in the presence of a hydrogen moving catalyst and a hydrogen acceptor by the use of a sulfur-free polar solvent and/or a cocatalyst, and (2) a method for preparing an aromatic secondary amino compound which comprises reacting cyclohexanone or a nucleus-substituted cyclohexanone, an amine and a nitro compound corresponding to the amine in a sulfur-free polar solvent in the presence of a hydrogen moving catalyst, a cocatalyst being added or not added. In a further aspect, a method is provided for the preparation of aminodiphenylamine by reacting phenylenediamine and cyclohexanone in the presence of a hydrogen transfer catalyst in a sulfur-free polar solvent while using nitroaniline as a hydrogen acceptor.
    Type: Grant
    Filed: December 2, 1994
    Date of Patent: July 16, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Teruyuki Nagata, Chiyuki Kusuda, Masaru Wada, Kenichi Satou, Masae Uchida
  • Patent number: 5534655
    Abstract: A process for preparing acrylamide is disclosed herein which comprises subjecting acrylonitrile to a hydration reaction in the presence of a copper-based catalyst, said process comprising the step of allowing a compound having an active methylene group and an acidic group in one molecule or a salt of the compound, for example, malonic acid, cyanoacetic acid or its salt to be present in a reaction system. According to the hydration reaction, it is possible to inhibit the secondary formation of impurities which cannot be heretofore removed, without any deterioration of a catalyst activity, and acrylamide can be obtained which is useful as a material for the manufacture of a high-molecular weight flocculant having a sufficiently large molecular weight and a good water solubility.
    Type: Grant
    Filed: February 23, 1995
    Date of Patent: July 9, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Yoshihiko Kambara, Yoshikazu Uehara, Takeya Abe, Koichi Asao
  • Patent number: 5534846
    Abstract: A lock device has a lock lever changing from its locked position to its unlocked position by a normal-lock-motor, and a super lock member displaced between its super locked position preventing the lock lever from changing and a releasing position enabling the change. The lock device has a switch adapted to turn on when a key is inserted into the ignition key cylinder at the driver's seat, another switch adapted to turn on when any person is in the interior of a car, still another switch adapted to turn on when any door opens, still another switch adapted to turn on when the trunk opens, and still another switch adapted to turn on when any window opens. When even one of these switches has turned on and the super lock member is changed to its super locked position, an alarm buzzer sounds or the change to the super lock halts.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: July 9, 1996
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventor: Katsuya Kuroda
  • Patent number: 5534595
    Abstract: Disclosed is a syndiotactic propylene copolymer containing 0.01 to 40 mol % of olefin units containing --OH group in the side chain. Of absorption peaks attributed to the methyl groups of the propylene units on an absorption spectrum by .sup.13 C-NMR of the copolymer, the intensity of an absorption peak observed at about 20.2 ppm is 0.3 or more of the intensity of absorption peaks of all the methyl groups attributed to the propylene units. The copolymer is produced by copolymerizing propylene and an alkenylsilane or alkenylborane compound in the presence of a catalyst system comprising an asymmetric ligands-having transition metal compound and an aluminoxane, followed by heat-treating the resulting propylene-alkenylsilane copolymer in the presence of a trialkylamine oxide and KF.HF or oxidizing and decomposing the resulting propylene-alkenylborane compound copolymer. Also disclosed is a resin composition comprising the copolymer and other polyolefin(s).
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: July 9, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Tadashi Asanuma, Hiroshi Matsuzawa, Tateyo Sasaki, Kaoru Kawanishi
  • Patent number: 5532365
    Abstract: The present invention relates to novel (tetrahydro-3-furanyl)methylamino derivatives of the following formula (1): ##STR1## wherein the variables are defined in the specification, which are useful as insecticides.
    Type: Grant
    Filed: April 5, 1995
    Date of Patent: July 2, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Kenji Kodaka, Katsutoshi Kinoshita, Takeo Wakita, Shirou Shiraishi, Kazutomi Ohnuma, Eiichi Yamada, Naoko Yasui, Michihiko Nakaya, Hirozumi Matsuno, Nobuyuki Kawahara, Koichi Ebihara
  • Patent number: 5531488
    Abstract: A vehicle door lock device comprises a first group lever consisting of three kinds of ratchet levers connected to a ratchet, and a second group lever consisting of two kinds of opening levers connected to an outer opening handle. First variation of the lock device having one-motion opening and self-canceling mechanisms can be realized by the first combination of a first ratchet lever and a first opening lever. Second variation of the lock device having one-motion opening mechanism but self-canceling mechanism can be realized by the second combination of a third ratchet lever and the first opening lever. Third variation of the lock device having self-canceling mechanism but one-motion opening mechanism can be realized by the third combination of a second ratchet lever and a second opening lever.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: July 2, 1996
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Masakatsu Yoshikuwa, Tsuguo Hoshikawa
  • Patent number: 5532054
    Abstract: A molding material shaped like a plate and comprising a composite of continuous fibers and thermoplastic resin wherein each of the filaments which form the continuous fiber is coated around the surface thereof with the thermoplastic resin. Although the molding material has a high density of reinforcing fibers therein, it provides excellent distribution of fibers in the molding process; few of its fibers are broken, and its mechanical strength is considerably enhanced when its specific surface is made larger than a certain value. This molding material can be used for injection, extrusion and compression moldings.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: July 2, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Tomohita Koba, Toshiyuki Nakakura, Hideo Sakai, Misao Masuda, Satoru Kishi, Chiaki Maruko
  • Patent number: 5532349
    Abstract: A process for producing 1-(2'-deoxy-B-D-erythropentofuranosyl)-5-trifluoromethyluracil derivatives having the formula as shown below: ##STR1## wherein X.sup.1 and X.sup.2 are independently hydrogen or halogen, comprising:(a) reacting 5-trifluoromethyl-5,6-dihydrouracil with alkylsulfoxide in the presence of a halogen and and acid to obtain 5-trifluoromethyluracil;(b) reacting the obtained 5-trifluoromethyluracil with a silylating agent to obtain 5-trifluoromethyl-2,4 -bis(trimethylsilyloxy)uracil; and(c) reacting the obtained 5-trifluoromethyl-2,4-bis(trimethylsilyloxy)uracil with a protected 2-deoxyalpha-D-erthro-pentofuranosyl)halide derivative in chloroform solvent in the presence of fluoride ion and in the presence of a copper compound as a catalyst.The resulting, deblocked nucleosides are useful as antiviral and antitumor agents.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: July 2, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Nobuya Kawauchi, Nobuyuki Fukazawa, Hiroki Ishibashi, Kengo Otsuka
  • Patent number: 5532030
    Abstract: A polyolefin multilayer laminate in which a first layer (A) made of a cycloolefin-based resin, such as an ethylene/cycloolefin random copolymer resulting from copolymerization of ethylene and a cycloolefin represented by the formula (1) given below, or a cycloolefin-based resin blend and a second layer (B) made of an olefin (co)polymer or a composition containing it are laminated. This laminate can be used as a packaging material which is superior in the interlayer adhesion, shapability, moistureproof property, transparency, flexibility, easiness of hand-cutting, heat-sealability and dead-hold property. Formula (1) comprises ##STR1## in which n and q are 0 or 1, m is 0 or any positive integer, R.sup.1 -R.sup.18 and R.sup.a and R.sup.b denote each H, a halogen atom or a hydrocarbon group, wherein R.sup.15 -R.sup.18 may form, by combining with each other, a monocyclic or polycyclic ring, which may have double bond(s), and wherein R.sup.15 -R.sup.16 may have terminal-located alkylidene group.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: July 2, 1996
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Toshiyuki Hirose, Shigetoshi Nishijima, Yohzoh Yamamoto, Hideshi Kawachi, Michio Tsugawa
  • Patent number: 5530146
    Abstract: Furobenzopyran derivatives of the general formula (I): ##STR1## in which R.sup.1 is a lower alkyl group, R.sup.2 is a lower alkyl group, lower alkoxy group, halogen atom or lower alkyl group substituted by a halogen atom, R.sup.3 is a lower alkyl group, lower alkoxy group, halogen atom, lower alkyl group substituted by a halogen atom, phenoxy group or benzyloxy group, R.sup.4 is a hydrogen atom or lower alkyl group and m and n are any integers between 0 and 4, have an excellent herbicidal activity on weeds and are completely selective to crops such as paddy rice, soybeans and cotton.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: June 25, 1996
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Kiyoshi Arai, Masayuki Ooka, Fumiaki Koizumi, Sadafumi Koda, Yasunaga Iwasaki, Yoshiro Kanemoto
  • Patent number: 5527622
    Abstract: A packaging laminate material comprises a paper substrate and a polyester resin layer provided on at least the innermost surface side of the substrate, wherein the polyester resin comprises dicarboxylic acid units comprising terephthalic acid and adipic acid and dihydroxy compound units comprising ethylene glycol and a second different dihydroxy compound. The polyester may also contain polyfunctional units derived from a polycarboxylic acid having a valence of 3 or more and/or derived from a polyglycol having a valence of 3 or more. The packaging laminate has a high heat-sealing strength, a small decrease in the heat-sealing strength even after the laminate is subjected to a hot water treatment or a hot hydrogen peroxide treatment, and is excellent in scent (odor) retention properties.
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: June 18, 1996
    Assignees: Mitsui Petrochemical Industries, Ltd., Nippon Paper Industries Co., Ltd.
    Inventors: Eiichi Kato, Eiji Takahashi, Hiroshi Kondo, Hiroji Niimi, Takashi Hiraoka, Masayuki Sakai, Masaki Kohsaka
  • Patent number: 5525875
    Abstract: A power supplying apparatus for a powered latching mechanism attached to a sliding door which moves along a vehicle body so as to be open and closed comprises a power supplying unit provided on the vehicle body and connected to an electric battery, a power receiving unit provided on the door and coming into contact with the supplying unit when the door is closed to a predetermined position, an electric loop which is established when both the units comes into contact with each other and in which a first electric current for detecting the contact between both the units is caused to flow, a motor controlled by the receiving unit for rotating a latch towards a full-latched position, and means for changing voltage applied to the electric loop when closing of the door is completed by the motor. When the loop is established, the supplying unit begins supplying main power to the receiving unit, and when the voltage of the loop is changed by the changing means, the supplying unit stops supplying the main power.
    Type: Grant
    Filed: January 12, 1995
    Date of Patent: June 11, 1996
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Yasunori Nakamura, Noriaki Yamashita, Tutomu Makino
  • Patent number: 5525684
    Abstract: A phenolic resin composition comprises a mixture of 100 parts by weight of a phenol aralkyl resin and 5 to 60 parts by weight of a novolak type phenolic resin having a content of binuclear components of not more than 10% by area, and a content of trinuclear components of not less than 50% by area and a sum content of tri- and tetra-nuclear components of 75% by area based on the total novolak phenolic resin except for the binuclear components, and an epoxy-cured product obtained by curing an epoxy resin while using the phenolic resin composition as set forth in claim 1 as a curing agent. The phenolic resin composition has a low viscosity and, when it is used as a curing agent for epoxy resins, the resulting epoxy-cured product has a low water absorption rate, is excellent in resistance to moisture and has a high glass transition temperature as compared with the cured product obtained using a novolak type phenolic resin as a curing agent.
    Type: Grant
    Filed: January 20, 1995
    Date of Patent: June 11, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Tomoyuki Kawabata, Shigeru Iimuro, Teruo Yuasa
  • Patent number: 5525689
    Abstract: In accordance with the present invention, there are provided ethylene copolymers composed of structural units (a) derived from ethylene and structural units (b) derived from .alpha.-olefin of 3.about.20 carbon atoms, said ethylene copolymers having[A] density of 0.85.about.0.92 g/cm.sup.3,[B] an intrinsic viscosity [.eta.] as measured in decalin at 135.degree. C. of 0.1.about.10 dl/g,[C] a ratio (Mw/Mn) of a weight average molecular weight (Mw) to a number average molecular weight (Mn) as measured by GPC of 1.2.about.4, and[D] a ratio (MFR.sub.10 /MFR.sub.2) of MFR.sub.10 under a load of 10 kg to MFR.sub.2 under a load of 2.16 kg at 190.degree. C. of 8.about.50, and being narrow in molecular weight distribution and excellent in flowability.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: June 11, 1996
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Toshiyuki Tsutsui, Ken Yoshitsugu, Akinori Toyota
  • Patent number: 5525704
    Abstract: Disclosed is an aromatic diamine compound represented by the formula (I) ##STR1## wherein R is H or CH.sub.3. Also disclosed is a bismaleimide compound represented by the formula (IV) ##STR2## wherein R is H or CH.sub.3, A resin forming composition comprising these compounds is also disclosed. The compounds are useful as raw materials for resins, and the resin forming composition and the resin can provide excellent heat resistance and impact resistance and low hygroscopicity.
    Type: Grant
    Filed: October 24, 1995
    Date of Patent: June 11, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Shoji Tamai, Norimasa Yamaya, Masahiro Ohta, Akihiro Yamaguchi
  • Patent number: 5525682
    Abstract: A process for preparing a novel superabsorbent polymer which is readily hydrolyzed and conform to environment by reacting a polysuccinimide with a diamine in an aqueous solution or an organic solvent to partially crosslink the polysuccinimide, and subsequently or concurrently hydrolyzing the remaining imide ring with an alkali while controlling the pH; and the superabsorbent polymer thus obtained.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 11, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Akinori Nagatomo, Hiroaki Tamatani, Masanobu Ajioka, Akihiro Yamaguchi
  • Patent number: 5525675
    Abstract: Described is a thermoplastic elastomer comprising (A) 10-90 wt. % of polypropylene having substantially a syndiotactic structure, and (B) 90-10 wt. % of an ethylene-propylene-nonconjugated diene copolymer rubber and/or ethylene-propylene copolymer rubber, said (B) having been partially crosslinked. The elastomer according to the present invention is useful for obtaining formed products, particularly automotive bumper fascias, automotive mud guards and automotive trim skin material, which are excellent not only in flexibility, rubber elasticity and mechanical strength but also in external appearance and touch, and are substantially free from bleeding and fogging.
    Type: Grant
    Filed: March 23, 1994
    Date of Patent: June 11, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Kazuhiko Masuda, Sachio Yokote, Masatoshi Kumagai
  • Patent number: 5525686
    Abstract: A process for preparing a polyvalent metal salt of a salicylic acid resin which comprises the steps of reacting salicylic acid or its derivative with styrene or its derivative at a temperature of -20.degree. C. or higher but lower than 40.degree. C. in the presence of sulfuric acid, and then reacting the resulting reaction product with a polyvalent metal compound; an aqueous dispersion in which the polyvalent metal salt of the resin is dispersed in water; and a developing sheet in which the polyvalent metal salt of the salicylic acid resin is used.
    Type: Grant
    Filed: December 13, 1994
    Date of Patent: June 11, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Yoshimitsu Tanabe, Jotaro Kida, Kiyoharu Hasegawa, Masakatsu Nakatsuka, Masayuki Furuya, Takeshi Nishimura
  • Patent number: 5525196
    Abstract: An improved process for producing a formed activated coke for simultaneous desulfurization and denitrification, which includes passing a ground coal through a tubular or cylindrical carbonization retort by using a hot gas stream, to subject the coal to preliminary carbonization to obtain a semi-coke, adding a caking agent to the semi-coke and forming the mixture, subjecting the formed material to carbonization to obtain a formed coke, and transferring the formed coke from the top to the bottom of a vertical multi-tubular retort of indirect heating and cooling (cooling is optional) type that includes a distribution section, a heating section, an activation section and a cooling section (the distribution section and the cooling section are optional) arranged in this order (the distribution section is at the top), to activate the formed coke.
    Type: Grant
    Filed: June 14, 1994
    Date of Patent: June 11, 1996
    Assignee: Mitsui Mining Co., Ltd.
    Inventors: Toshihisa Yuda, Masahiro Matsuoka, Kazuhiko Hanashita, Fumiaki Furusawa, Mitsuhiro Takada