Patents Assigned to Mitsui Toatsu Chemicals, Incorporated
  • Patent number: 4851445
    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: June 28, 1988
    Date of Patent: July 25, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Takeo Yoshimoto, Mitsumasa Umemoto, Keiichi Igarashi, Yutaka Kubota, Hideo Yamazaki, Yuji Enomoto, Hirohisa Yanagita
  • Patent number: 4849316
    Abstract: Resin composition containing vinyl polymer and olefin polymer for use in electrophotography, electrostatic recording and electrostatic printing and the like, more particularly the resin composition obtained by uniformly dispersing the olefin polymer in the vinyl polymer, and the toner containing this resin composition are disclosed.
    Type: Grant
    Filed: December 13, 1988
    Date of Patent: July 18, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Shoji Kawaski, Hisatomo Sato, Masaaki Shin, Takashi Yamamoto
  • Patent number: 4841083
    Abstract: There is here disclosed a ladder polysilane represented by the general formula (I): ##STR1## wherein n is a positive integer, and R is a halogen atom, a hydrogen atom, a hydroxyl group, an alkyl group, an alkenyl group, an aryl group or an alkoxy group having 20 or less carbon atoms, and the alkyl, alkenyl, aryl or alkoxy group may contain a functional group such as --COOH, --SO.sub.3 H, --NH.sub.2, --NO.sub.2, --NCO, --F, --Cl, --BR, --I or --OH. In addition, a method for preparing the aforesaid ladder polysilane is also disclosed here.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: June 20, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Yoichiro Nagai, Hideyuki Matsumoto
  • Patent number: 4839232
    Abstract: A polyimide film formed by using a symmetrical aromatic meta-substituted primary diamine and a symmetrical aromatic para-substituted primary diamine as raw materials in a specific proportion has excellent heat resistance, electrical properties, flexibility and the like. Such a polyimide film can be bonded to a metal foil not by using any adhesive, but by coating the metal foil with a polyamic acid constituting a precursor of the polyimide and further reacting the polyamic acid to convert it to the polyimide. In this manner, there can be obtained a flexible laminate for printed-circuit board comprising a polyimide film bonded to a metal foil with good adhesion and exhibiting excellent properties as described above.
    Type: Grant
    Filed: June 25, 1987
    Date of Patent: June 13, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Moritsugu Morita, Kazuo Miyazaki, Akihiro Yamaguchi, Masahiro Ohta, Shoji Tamai, Kunio Nishihara
  • Patent number: 4831102
    Abstract: Thermosetting resin compositions are provided which comprise aromatic bismaleimide derivatives, for example, 2,2-bis[4(3-maleimidephenoxy)phenyl]propane and diamine derivatives, for example, 4,4'-bis(3-aminophenoxy)biphenyl. Prepolymers are also prepared by conducting heat-treatment of said compositions. The compositions of this invention are used for thermoforming such as compression molding etc. as well as raw materials of adhesives and coatings. The compositions provide molded articles which are excellent, for example, in impact strength, flexibility and high-temperature stability.
    Type: Grant
    Filed: July 8, 1987
    Date of Patent: May 16, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Norimasa Yamaya, Nobuhito Koga, Masahiro Ohta, Akihiro Yamaguchi
  • Patent number: 4831162
    Abstract: Ethylene is oxidized into ethylene oxide by bringing a feed gas mixture, which contains the ethylene, oxygen and at least 1 vol. % of carbon dioxide as well as at least 0.5 vol. ppm of a chlorine-containing burning reaction decelerator and at least 1 vol. ppm as calculated in terms of nitrogen monoxide of a nitrogen oxide and/or a precursor thereof, into contact with a catalyst which carries silver and as a practically sole alkali metal, rubidium at an Rb/Ag atomic ratio of 2/1000-7/1000 on a fire-resistant carrier having a specific surface area of 1 m.sup.2 /g or smaller.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: May 16, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Mutsuo Nakajima, Hisaharu Kuboyama, Tadashi Komiyama, Hiroshi Kimura, Kenji Yoshida
  • Patent number: 4831158
    Abstract: In a process for preparing an indole by reacting an aniline with a diol, a catalyst the activity of which has been reduced through its use in the reaction is brought into contact with an inert gas containing 5 vol. % or less of oxygen so that the catalyst is regenerated for its repeated utilization. The activity of the regenerated catalyst is enhanced further when it is subjected to a reducing treatment for activation upon its reutilization.
    Type: Grant
    Filed: November 2, 1987
    Date of Patent: May 16, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Tomoyuki Ueno, Tadatoshi Honda, Takashi Jimbo, Makoto Kotani, Kazuhiro Terada, Shinji Kiyono
  • Patent number: 4828710
    Abstract: This invention pertains to a water-insolubilized resin of a polymer of at least one monomer selected from N-alkyl- or N-alkylene-substituted acrylamides or methacrylamides represented by the following general formula (I): ##STR1## wherein R.sub.1 and R.sub.2 mean individually a hydrogen atom or methyl group and R.sub.3 denotes a methyl, ethyl or propyl group, with the proviso that R.sub.3 is an ethyl or propyl group when R.sub.2 stands for a hydrogen atom, and that R.sub.3 is a methyl or ethyl group when R.sub.2 stands for a methyl group, or wherein R.sub.2 and R.sub.3 form --CH.sub.2).sub.4 or --CH.sub.2).sub.2 O--CH.sub.2).sub.2 in combination; or a copolymer of at least one monomer selected from the acrylamides or methacrylamides and another copolymerizable monomer. The resin has water-absorbing capacity which varies in degree depending on temperature and, when heated, undergoes shrinkage even in the presence of a large excess of water to release once-absorbed water.
    Type: Grant
    Filed: July 21, 1987
    Date of Patent: May 9, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hiroshi Itoh, Toshimi Nakagawa, Atsuhiko Nitta, Tomio Tanaka, Hideo Kamio
  • Patent number: 4828815
    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: December 10, 1987
    Date of Patent: May 9, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Tadamitsu Kiyoura, Masanobu Ajioka, Naoshi Fujimoto, Toshihide Suzuki, Yasuo Kogure, Tokio Nagayama, Kazuo Kanaya
  • Patent number: 4826735
    Abstract: A polypropylene resin composition is provided by incorporating a metal salt of a fatty acid and the oxide or hydroxide of an alkaline earth metal, each, in an amount of 0.05-1 part by weight based on 100 parts by weight of polypropylene. The polypropylene resin composition shows excellent thermal processing stability even when subjected to remelting and extrusion molding after mixing of a scrap recycled from the production of multi-layered containers or sheets each of which is formed of a gas barrier layer made of nylon or an ethylene-vinyl alcohol copolymer and another layer made of a polypropylene resin composition.
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: May 2, 1989
    Assignees: Mitsui Toatsu Chemicals, Incorporated, Toyo Seikan Kaisha Ltd.
    Inventors: Toru Ueki, Jinichi Yazaki, Akihiko Tamura, Hideo Amemiya, Takashi Miyazaki
  • Patent number: 4825003
    Abstract: A process for the production of 2-chloropropionaldehyde from vinyl chloride, carbon monoxide and hydrogen which comprises using a rhodium compound and a trivalent organic phosphorus compound or the oxide of a trivalent organic phosphorus compound as a catalyst and carrying out the reaction under the co-existence of an acid the pka of which is in the range of 0.5-5, the oxide, hydroxide or a weak acid salt of an alkali metal or alkaline earth metal, or a buffer solution.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: April 25, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hiroshi Ono, Takaharu Kasuga, Shinji Kiyono, Yoshihiro Fujita
  • Patent number: 4824882
    Abstract: Disclosed is a polarizing film comprising a hydrophobic polymer containing a dichroic organic colorant in an oriented state which is characterized in that the dichroic organic colorant is substantially insoluble in water, organic solvents and liquid crystals and the dichroic ratio of the colorant is not less than 7 when it is measured with the film obtained by blending the colorant intimately with polyethylene terephthalate, melting the resulting blend and forming it into a film. This polarizing film has exceptionally excellent moisture resistance and thermal resistance.
    Type: Grant
    Filed: May 20, 1986
    Date of Patent: April 25, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Katsuji Nakamura, Junichi Fujio, Shin Hosonuma, Masakatsu Nakatsuka, Tsutomu Nishizawa
  • Patent number: 4822589
    Abstract: In the process of producing chlorine by oxidizing hydrogen chloride with molecular oxygen, activity of the catalyst can be maintained for a long period with a high conversion ratio under high space velocity of gaseous raw materials without using additives as in conventional methods, in the presence of a crystalline chromic oxide catalyst obtained by supporting relatively large amounts of chromic oxide on a silicon oxide carrier having a specified pore volume.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: April 18, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Tadamitsu Kiyoura, Yasuo Kogure, Tokio Nagayama, Kazuo Kanaya
  • Patent number: 4814488
    Abstract: Novel 4,4-bis(4-hydroxyphenyl)cyclohexanecarboxylic acid derivatives. These compounds can be prepared by reacting a cyclohexanone-4-carboxylic acid with a phenol.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: March 21, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Tohru Miura, Teruyuki Nagata
  • Patent number: 4814337
    Abstract: Disclosed are dihalogenothiocyanopyrimidine derivatives of the general formula ##STR1## wherein X and Y are halogen atoms, a process for preparing such derivatives, as well as agricultural and horticultural fungicidal compositions containing such a derivative as active ingredient.
    Type: Grant
    Filed: April 16, 1987
    Date of Patent: March 21, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Katsutoshi Ishikawa, Hitoshi Shimotori, Noboru Iida, Toshiaki Kuwatsuka, Junya Fujiwara, Yuji Yanase, Takeshi Sekino
  • Patent number: 4812203
    Abstract: An evaporator which is formed, in combination, of a first evaporator of a centrifugal falling-film type; and a second evaporator having a shape formed of a heating side wall portion of a downward-pointing conical configuration, a cover portion defining at least one opening, through which a liquid to be treated is charged and resulting volatile components are discharged, and a bottom portion defining at least one opening permitting discharge of an evaporation residue. A scraping agitator is built in the second evaporator. The side wall portion is externally wrapped with a pipe or the like, whereby a heating medium is caused to pass therethrough for heating the side wall portion. The evaporation residue discharge opening of the first evaporator is connected to the opening of the cover portion of the second evaporator.The above evaporator is suitable to recover a volatile component from a high-viscosity liquid containing tar-like substances. It can achieve a high recovery rate.
    Type: Grant
    Filed: June 23, 1987
    Date of Patent: March 14, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Kenji Obata, Nobuhiko Yoneda, Masabumi Kataita, Yoshihiro I, Hironori Yamashita
  • Patent number: 4808661
    Abstract: The invention provides a rubber dispersed copolymer resin having excellent heat resistance, impact strength and moldability and composed of (1) a dispersed phase formed of a rubbery polymer and copolymerized styrene-type, acrylonitrile-type and maleimide-type monomers, said rubbery polymer specifically controlled occluding the copolymer of monomers, being grafted with the copolymer and/or forming a multicomponent gel together with copolymers, and (2) a continuous phase formed at least of a specifically controlled copolymer of the styrenetype, acrylonitrile-type and maleimide-type monomers. The resin is useful as a molding material for electric appliances, electronic equipment and cars.
    Type: Grant
    Filed: August 25, 1986
    Date of Patent: February 28, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Mune Iwamoto, Norifumi Ito, Kazuo Sugazaki, Tetsuyuki Matsubara, Toshihiko Ando
  • Patent number: 4808503
    Abstract: Disclosed herein is a electrophotographic photoreceptor having high sensitivity and excellent durability. The photoreceptor has a photosensitive layer which contains an azo compound having the tetraphenylthiophene or tetraphenylthiophene-1,1-dioxide skeleton.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: February 28, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Yasuyuki Yamada, Hisato Itoh, Tsutomu Nishizawa, Akihiro Yamaguchi
  • Patent number: 4808507
    Abstract: Disclosed herein is an electrophotographic photoreceptor having high sensitivity and excellent durability. The photoreceptor has a photosensitive layer which contains at least one bisazo compound having the 2-phenyl-benzooxazole skeleton.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: February 28, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Yasuyuki Yamada, Hisato Itoh, Tsutomu Nishizawa, Akihiro Yamaguchi
  • Patent number: 4806600
    Abstract: A methyl methacrylate syrup composition comprises an intimate mixture of 1-99 parts by weight of a first polymer-in-monomer syrup (A) and 99-1 parts by weight of a second polymer-in-monomer syrup (B), wherein said syrups (A) and (B) are as follows:(A) a polymer-in-monomer syrup obtained by copolymerizing a mixture of methyl methacrylate monomer, one or more monomers having reactivity with glycidyl groups and containing at least one ethylenically-unsaturated bond, and one or more monomers not having reactivity with glycidyl groups and containing at least one ethylenically-unsaturated bond;(B) a polymer-in-monomer syrup obtained by dissolving a copolymer obtained by copolymerizing one or more monomers containing at least one glycidyl group and one or more monomers copolymerizable with glycidyl-containing monomers, having a number average molecular weight of 1,500-50,000 and containing glycidyl groups, in a mixture of monomers comprising one or more monomers selected from the group consisting of methyl methacryl
    Type: Grant
    Filed: August 7, 1987
    Date of Patent: February 21, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Taisaku Kano, Nobuki Kobayahsi, Yoshinobu Ichihara