Patents Assigned to Mitsui
  • Patent number: 4693677
    Abstract: A neck-in control device of a flat die comprising a pair of inducing guides, provided at both ends of a resin extruding outlet of the flat die, for inducing a molten resin extruded from the resin extruding outlet to move outward, whereby an inward neck-in of the molten resin is suppressed.
    Type: Grant
    Filed: April 23, 1986
    Date of Patent: September 15, 1987
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Hiromi Shigemoto, Akio Yamamoto, Iwatoshi Suzuki
  • Patent number: 4694052
    Abstract: Disclosed herein is a coating composition which contains a urethane-modified (meth)acrylate compound and a mono(meth)acrylate and is curable upon its exposure to radiation. Also disclosed herein is a coating, especially, a primary coating for an optical fiber, which coating or cladding is composes of a cured material obtained by curing the composition through its exposure to radiation.
    Type: Grant
    Filed: June 25, 1985
    Date of Patent: September 15, 1987
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Sumio Hirose, Isao Naruse, Akio Matsuyama
  • Patent number: 4692466
    Abstract: Disclosed herein are N-(2-chloro-4-trifluoromethylphenyl)-3-trifluoromethylbenzensulfonamide derivatives represented by the following general formula (I): ##STR1## wherein X and Y individually mean a hydrogen or chlorine atom, and agricultural fungicides containing said derivatives.
    Type: Grant
    Filed: February 21, 1986
    Date of Patent: September 8, 1987
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Takeo Yoshimoto, Mitsumasa Umemoto, Keiichi Igarashi, Yutaka Kubota, Hideo Yamazaki, Yuji Enomoto, Hirohisa Yanagita
  • Patent number: 4692506
    Abstract: A five-component copolyester not described in the prior art literature which comprises at least five components, i.e. (a) two aromatic dicarboxylic acid components composed of a major amount of an isophthalic acid component and a minor amount of another dicarboxylic acid component, (b) a diol component composed of an ethylene glycol component and optionally another diol component, (c) an aromatic monohydroxy-monocarboxylic acid component and (d) a polyfunctional compound component having at least three functional groups. The copolyester has excellent melt moldability, mechanical strength, transparency and gas-barrier property in a well balanced combination, and shows improved properties over conventional copolyesters containing a major amount of isophthalic acid as a dicarboxylic acid component.
    Type: Grant
    Filed: July 23, 1986
    Date of Patent: September 8, 1987
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Tadao Yatsu, Takayuki Nakano, Nobuya Hinooka, Tatsuo Kato
  • Patent number: 4692554
    Abstract: A process for producing 1,3-bis(3-aminophenoxy)-benzenes which are very useful as a monomer for heat-resistant high molecular weight polymers is provided, which process comprises dehalogenating a bis(3-aminophenoxy)-halogenobenzene by its reduction, which compound is selected from the group consisting of 1,3-bis(3-aminophenoxy)-5-halogenobenzenes, 1,3-bis(3-aminophenoxy)-2,4-dihalogenobenzenes and 1,5-bis(3-aminophenoxy)-2,4-dihalogenobenzenes, these raw material compounds being respectively obtained by reacting a 1,3,5-trihalogenobenzene, a 1,2,3,4-tetrahalogenobenzene or a 1,2,4,5-tetrahalogenobenzene with 3-aminophenol in the presence of a dehydrohalogenating agent.
    Type: Grant
    Filed: August 7, 1984
    Date of Patent: September 8, 1987
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Keizaburo Yamaguchi, Yukihiro Yoshikawa, Yoshimitsu Tanabe, Kenichi Sugimoto, Akihiro Yamaguchi
  • Patent number: 4692501
    Abstract: In a process for producing an olefin polymer which comprises continuously polymerizing an olefin in the presence of a catalyst composed of a transition metal compound component and an organometallic compound component in at least two independent polymerization zones connected in series by a pipeline while feeding the olefin and the catalyst into an upstream zone of polymerization and withdrawing the resulting polymer from a downstream zone of polymerization; the improvement wherein(1) the polymerization in the upstream polymerization zone is carried out in a liquid medium under conditions for slurry polymerization,(2) the solid polymer-containing slurry discharged from the upstream polymerization zone is fed into a liquid medium exchanging zone through an upper feed opening (A) in its upper portion, said liquid medium exchanging zone being provided between the upstream polymerization zone and the downstream polymerization zone and connected to these zones by pipelines, and an additional supply of the liquid m
    Type: Grant
    Filed: July 31, 1985
    Date of Patent: September 8, 1987
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Hideo Mineshima, Haruyuki Koda, Ryoichi Yamamoto
  • Patent number: 4690829
    Abstract: This invention relates to a method of preventing the retrogradation of foodstuffs containing starchy material, wherein waxy barley starch is used as part of the starchy material. Optionally, a polysaccharide is added to the starchy material.
    Type: Grant
    Filed: February 4, 1985
    Date of Patent: September 1, 1987
    Assignee: Mitsui & Co., Ltd.
    Inventor: Takayuki Usui
  • Patent number: 4689387
    Abstract: An S-alkyl thiocarbamate base lens resin is obtained by reacting one or more NCO-containing compounds, such as xylylene diisocyanate, hexamethylene diisocyanate and/or tetrachloroxylylene diisocyanate, with one or more SH-containing aliphatic compounds, for example, a di(2-mercaptoalkyl) ether.
    Type: Grant
    Filed: March 24, 1986
    Date of Patent: August 25, 1987
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Nobuyuki Kajimoto, Akihiro Tamaki, Teruyuki Nagata
  • Patent number: 4687836
    Abstract: This invention relates to a polyimide powder in use for adhesion and/or coat forming and to a method of preparing said powder, wherein polyamic-acid is chemically imidized which is obtained by reacting tetracarboxylic acid dianhydride with diamine in organic solvents.This invention further relates to a method for adhesion and coat forming by using said polyimide powder.This invention still further relates to a method for preparing prepreg by using said polyimide powder, and a method for adhesion and preparing molded laminates by using said prepreg.
    Type: Grant
    Filed: October 10, 1985
    Date of Patent: August 18, 1987
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Akira Ibi, Takushi Sato, Akihiro Yamaguchi, Shigeru Takahashi, Shigeyuki Shishido, Shoji Tamai, Hisai Nakajima
  • Patent number: 4684430
    Abstract: Thermoplastic pipes held by a pair of clamp mechanisms are fusibly interconnected. A torque wrench moves one clamp mechanism toward the other clamp mechanism and provides a signal when the force applied is a given value. A locking mechanism is operated in response to this signal to lock the torque wrench in position. The apparatus is programmed to release the locking mechanism at the end of a predetermined time period. Changes in the programmed conditions are effected in response to changes in the size of one of the clamp mechanisms.
    Type: Grant
    Filed: June 28, 1983
    Date of Patent: August 4, 1987
    Assignee: Mitsui Petrochemical Industries
    Inventors: Takayuki Handa, Yasushi Takeuchi, Masumi Kato, Hisazi Seki
  • Patent number: 4684449
    Abstract: A process for producing m-hydroxybenzyl alcohol which comprises electrolytically reducing m-hydroxybenzoic acid in an acidic aqueous solution at a temperature of 20.degree. to 70.degree. while m-hydroxybenzyl alcohol is present always in the electrolytic solution. The constant presence of m-hydroxybenzyl alcohol is effected by (1) continuously adding m-hydroxybenzoic acid to the electrolytic solution in an amount corresponding to that consumed as the electrolytic reaction proceeds, or (2) by continuously adding m-hydroxybenzoic acid and the acidic aqueous solution to the electrolytic solution.
    Type: Grant
    Filed: November 19, 1986
    Date of Patent: August 4, 1987
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Shinji Takenaka, Ryu Oi, Chitoshi Shimakawa
  • Patent number: 4684567
    Abstract: A reinforcing structural material is provided made of a plurality of fiber assembly cords interwoven into a braid, each of the cords being comprised of a plurality of fibers, and the braids being impregnated with a bonding agent for bonding together the fibers and cords. The reinforcing braid is useful for reinforcing a fibrous inorganic composite providing a product which is light in weight but excellent in strength characteristics.
    Type: Grant
    Filed: June 13, 1986
    Date of Patent: August 4, 1987
    Assignee: Mitsui Kensetsu Kabushiki Kaisha
    Inventors: Tadashi Okamoto, Sumiyuki Matsubara, Masahisa Handa
  • Patent number: 4683258
    Abstract: Disclosed herein is an agent for absorbing and releasing water vapor, which comprises a homopolymer of at least one monomer selected from specific N-alkyl- or N-alkylene-substituted acrylamides and methacrylamides, a copolymer of two or more of the acrylamides and methacrylamides, a copolymer of said at least one monomer with one or more monomers other than the acrylamides and methacrylamides and copolymerizable therewith, or a water-insolubilized product of the homopolymer or either one of the copolymers. The above agent has broad utility for humidity contol of gases, humidity control in green houses and prevention of fogging on surfaces of transparent materials, as humidity sensors and dew sensors, etc.
    Type: Grant
    Filed: January 17, 1986
    Date of Patent: July 28, 1987
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hiroshi Itoh, Toshimi Nakagawa, Atsuhiko Nitta, Tomio Tanaka, Hideo Kamio, Ryosuke Enoshita, Tamotu Uejima, Takahiro Ouchi, Kazuki Abe, Sadao Kobayashi
  • Patent number: 4681816
    Abstract: Composite laminates such as metal plate/vibration damper/metal plate, metal plate/vibration damper/metal plate/vibration damper, metal plate/vibration damper/metal plate/vibration damper/metal plate are disclosed. The vibration damper is composed of ethylene-(meth)acrylic acid salt copolymers or its modified products having a specific melting point and a particular heat of fusion. The composite laminate having at least one vibration damper exhibits excellent vibration damping performance, particularly at high temperatures.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: July 21, 1987
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Mikio Hashimoto, Yoshinari Nakata, Hitoshi Koga
  • Patent number: 4680118
    Abstract: A cartridge filter comprises a pleat-type porous membrane having a longer length than an effective filtering surface thereof; upper and lower end plates; a plurality of segmented cylindrical core members disposed between the upper and lower end plates; and protective caps for fastening and sealing an upper and lower reminder of the pleat-type porous membrane other than the effective filtering surface thereof. Each of said end plates is provided with a plurality of fins, each of which is covered by the pleat-type porous membrane. The pleat-type porous membrane is folded at each corner of respective end plates and fastened firmly between the end plate and the protective cap by melting means, adhesion or sealing means.
    Type: Grant
    Filed: October 21, 1985
    Date of Patent: July 14, 1987
    Assignee: Mitsui & Co., Ltd.
    Inventor: Jun Taga
  • Patent number: 4680369
    Abstract: A sulfur-containing polyurethane base lens resin is obtained by reacting one or more isocyanate compounds, which have two or more NCO groups, with one or more OH-containing compounds, which have two or more OH groups, in such proportions that the molar ratio of NCO groups to OH groups ranges from 0.5 to 1.5. At least one of said one or more OH-containing compounds contains one or more sulfur atoms in the molecule thereof. The total content of sulfur atoms in all OH-containing compounds is 20 wt. % or higher.
    Type: Grant
    Filed: March 24, 1986
    Date of Patent: July 14, 1987
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Nobuyuki Kajimoto, Akihiro Tamaki, Teruyuki Nagata
  • Patent number: 4677163
    Abstract: A vinyl chloride resin composition comprising(A) 100 parts by weight of a vinyl chloride resin,(B) 30 to 200 parts by weight of an ethylene/vinyl acetate/carbon monoxide copolymer, and(C) 2 to 80 parts by weight of chlorinated polyethylene. The said vinyl chloride resin composition can be prepared by simultaneously melt-mixing 100 parts by weight of the vinyl chloride resin, 30 to 200 parts by weight of the ethylene/vinyl acetate/carbon monoxide copolymer and 2 to 80 parts by weight of chlorinated polyethylene.
    Type: Grant
    Filed: November 6, 1985
    Date of Patent: June 30, 1987
    Assignee: Du Pont-Mitsui Polychemicals Co., Ltd.
    Inventors: Seiichi Tada, Yasuhisa Hosoai
  • Patent number: 4677066
    Abstract: A method for promoting fusion of plant protoplasts comprising the steps of; (a) treating the plant protoplasts with a fusion agent, and then (b) incubating the resultant plant protoplasts in an incubation medium having an osmotic pressure lower than that required for maintaining the plant protoplasts in a stable form. This effectively promotes the fusion of the plant protoplasts at a higher fusion rate in a wider range of plants.
    Type: Grant
    Filed: December 23, 1983
    Date of Patent: June 30, 1987
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Shigeru Takahashi, Yasuhiro Maeda
  • Patent number: 4677166
    Abstract: A halogenated product of a low-molecular weight ethylene random copolymer comprising ethylene and at least one alpha-olefin having 3 to 20 carbon atoms, wherein:(i) the starting low-molecular weight ethylene random copolymer contains 30% to 75% by mole of the ethylene component and 25% to 70% by mole of the alpha-olefin component;(ii) the halogen content of the halogenated product is 5% to 75% by weight;(iii) the intrinsic viscosity [.eta.] of the halogenated product is 0.01 to 0.5 dl/g determined at 135.degree. C. in decalin;(iv) the molecular weight distribution Mw/Mn of the halogenated product, wherein Mw and Mn represent a weight-average molecular weight and a number-average molecular weight, respectively, determined by gel permeation chromatography is 5 or less; and(v) the number-average molecular weight of the halogenated product is 300 to 1000, determined by gel permeation chromatography.
    Type: Grant
    Filed: November 6, 1985
    Date of Patent: June 30, 1987
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Yoshimi Ozaki, Eizo Sueoka
  • Patent number: 4675307
    Abstract: An alkali metal-supported substance comprising a calcination product of a hydrotalcite-like compound having Mg as a divalent metal and a carbonate ion as an anion and an alkali metal supported on the calcination product. When this substance is treated with a gas containing molecular oxygen, part of the alkali metal is converted to its oxide to give a more stable substance. These substances act, for example, as an isomerization catalyst for olefins.
    Type: Grant
    Filed: January 23, 1986
    Date of Patent: June 23, 1987
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Katsuo Taniguchi, Tadaaki Fujimoto, Kenji Saeki