Patents Assigned to Mitsui Toatsu Chemicals, Incorporated
  • Patent number: 6936684
    Abstract: A salt useful as an active species in an organic reaction and represented by the following chemical formula (1): wherein n stands for an integer of from 1 to 8, Zn? represents an n-valent anion of an active hydrogen compound, a, b, c and d each stands for a positive integer, and Rs represent the same or different hydrocarbon groups. In addition, a simple and efficient process is provided for producing a poly(alkylene oxide) by polymerizing an alkylene oxide compound in the presence of the salt represented by the chemical formula (1).
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: August 30, 2005
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Tadahito Nobori, Masahiro Kouno, Toshiaki Suzuki, Kazumi Mizutani, Shinji Kiyono, Yoshiho Sonobe, Usaji Takaki
  • Patent number: 6051223
    Abstract: A thrombolytic composition containing tissue type plasminogen activator or a derivative thereof in combination with an anionic polymer or a salt thereof and an amine compound or a salt thereof or in combination with an anionic polymer or a salt thereof, an amine compound and an acid or a salt thereof. The composition is an aqueous solution or a lyophilized preparation which can be stably dissolved on dilution at near neutral pH in both pharmaceutical solutions having high salt concentrations, such as physiological saline, and pharmaceutical solutions having low salt concentrations, such as a 5% glucose solution. Clinically useful products for infusion or injection are prepared to be used at a pH near neutral.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: April 18, 2000
    Assignees: Mitsui Toatsu Chemicals Incorporated, Mochida Pharmaceutical Co. Ltd.
    Inventors: Yukio Shimazaki, Miyuki Kawashima, Masahiko Ishibashi, Ryo Tanaka, Kiyoshi Sakai, Hisahiro Ishiwari
  • Patent number: 5733561
    Abstract: An aqueous suspension-type microcapsule insecticide composition which is obtained by emulsifying a hydrophobic admixture of liquid pyrethroid insecticide or a pyrethroid insecticide and a high boiling point solvent, preferably an alkyl ester of phthalic acid in which the alkyl group has 8-13 carbon atoms to form particles of a suitable size in the presence of an anionic water-soluble polymeric surface active agent and polycondensating melamine-formaldehyde or a derivative thereof on the surface of the said emulsified and dispersed particles, and a process for producing the composition. This composition exhibits stable insecticidal activity over a prolonged period with noticeably reduced toxicity to aquatic life.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: March 31, 1998
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Yoshinobu Shimura, Tamotsu Asano, Seiichi Shimono, Takeshi Imakita, Yukio Kiritani, Yuuji Enomoto, Toshio Matsumoto
  • Patent number: 5695911
    Abstract: Phthalocyanine compounds represented by the below-described formula are suitable for use in the fabrication of color filters. ##STR1## wherein R.sup.1, R.sup.4, R.sup.5, R.sup.8, R.sup.9, R.sup.12, R.sup.13 and R.sup.16 represent a group represented by the below-described formula, H or a halogen atom, R.sup.2, R.sup.3, R.sup.6, R.sup.7, R.sup.10, R.sup.11, R.sup.14 and R.sup.15 represent an alkyl, alkoxyl, alkylthio, alkylamino, dialkylamino or aryloxyl, arylthio group or --COOR.sup.17, R.sup.17 being a particular monovalent group, H or a halogen atom; and Met represents a metal atom. ##STR2## wherein X and Z represent O or S, R.sup.18, R.sup.19 and R.sup.20 represent H or an alkyl group, A, B and D represent a connecting group, n and l is an integer of 0-10, m, q, t, u, r and w are an integer of 0-2, and p is 0 or 1.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: December 9, 1997
    Assignees: Mitsui Toatsu Chemicals, Incorporated, Yamamoto Chemicals, Incorporated
    Inventors: Hisato Itoh, Akio Karasawa, Kenichi Sugimoto, Takahisa Oguchi, Shin Aihara
  • Patent number: 5653839
    Abstract: A fire-resistant glass comprising:(a) at least two plate-shaped vitreous materials arranged parallel and apart, the sides of the plate-shaped vitreous materials facing each other being treated with a silane coupling agent,(b) a spacer provided between the plate-shaped vitreous materials at their peripheries via an adhesive,(c) a sealing agent adhered to the outer surface of the spacer, and(d) an aqueous gel filled into the space formed by the plate-shaped vitreous materials and the spacer, the aqueous gel comprising a polymer of a particular (meth)acrylamide derivative, a particulate metal oxide, an aqueous medium and an antifreezing agent.This fire-resistant glass has an excellent fire-resistant property; is stable over a long period of time and is unsusceptible to deterioration.
    Type: Grant
    Filed: April 4, 1995
    Date of Patent: August 5, 1997
    Assignees: Mitsui Toatsu Chemical Incorporated, Central Glass Company, Limited
    Inventors: Hiroshi Itoh, Takashi Abe, Hitoshi Yamashita, Toshihiro Yoshimura, Takeshi Hisanaga, Takao Takebayashi, Kunio Nakata, Chikara Hashimoto
  • Patent number: 5627249
    Abstract: Provided by this invention are an acrylamide polymer which has a weight-average molecular weight (a) of from 1,500,000 to 10,000,000 and a weight-average inertial radius (b) of from 30 to 150 nm, the ratio (b)/(a) of the weight-average inertial radius (b) to the weight-average molecular weight (a) being 0.00004 or smaller; and an aqueous solution of an acrylamide polymer which solution has a polymer concentration ranging from 22 to 60%, a Brookfield viscosity at 25.degree. C. of 50,000 cps or smaller and a weight-average molecular weight of from 500,000 to 10,000,000. They are useful as paper strength agents.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: May 6, 1997
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hirotoshi Doki, Hitoshi Ishigaki, Toshiki Oyanagi, Tsugio Matsubara, Shigeo Watanabe
  • Patent number: 5624998
    Abstract: The present invention provides an aqueous gel comprising a polymer of (meth)acrylamide or particular (meth)acrylamide derivative(s), particulate metal oxide(s) and an aqueous medium, a process for producing said gel, and products utilizing said gel.This aqueous gel can be produced so as to have transparency, has fire resistance and can prevent the spreading of flames, and is highly elastic. The aqueous gel, when produced as a transparent gel, becomes cloudy when heated or cooled and is useful for the shielding of heat rays or cold radiation.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: April 29, 1997
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hiroshi Itoh, Takashi Abe, Hideo Kamio, Hitoshi Yamashita, Atsuhiko Nitta
  • Patent number: 5620934
    Abstract: Disclosed herein is a process for the preparation of alkylsilanes and alkenyl silanes by hydrosilylation of their corresponding silanes and unsaturated hydrocarbons in the presence or absence of a catalyst, a process for the preparation of polyalkenylsilanes (some of which are high molecular compounds) by the anionic coordination polymerization, radical polymerization or ionic polymerization of the alkenylsilanes, and a process for the production of silicon carbide by using these polyalkenylsilanes as prepolymers.
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: April 15, 1997
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Masayoshi Itoh, Ryo Takeuchi, Kenji Iwata, Mineo Kobayashi
  • Patent number: 5602160
    Abstract: Aminoketone derivative compounds containing a heterocyclic ring bonded to an aminoketone moiety and useful as effective ingredients of centrally acting muscle relaxants and pollakiurea curing agents.(+)3-phenyl-5-[2-(1-pyrrolidinylmethyl)butyryl] isoxazole, which has a more remarkable central muscle relaxant action as compared with its racemic modification, can be effectively separated from the racemic modification using optically active 10-camphorsulfonic acid as the agent for the optical resolution.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: February 11, 1997
    Assignee: Mitsui Toatsu Chemicals Incorporated
    Inventors: Hideki Tanada, Kazuya Sakai, Seitaro Kajiya, Norio Ohto, Kazutoshi Horikomi, Akira Matsubara, Hideshi Shimizu, Akira Mizuchi
  • Patent number: 5596117
    Abstract: A process for the preparation of alkylsilanes and alkenyl silanes by hydrosilylation of their corresponding silanes and unsaturated hydrocarbons in the presence or absence of a catalyst. A process for the preparation of polyalkenylsilanes (some of which are novel high molecular compounds) by the anionic coordination polymerization, radical polymerization or ionic polymerization of the alkenylsilanes. A process for the production of silicon carbide by using these polyalkenylsilanes as prepolymers.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: January 21, 1997
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Masayoshi Itoh, Ryo Takeuchi, Kenji Iwata
  • Patent number: 5596039
    Abstract: Provided by the present invention are novel diguanamine derivatives, led by 2,5/2,6-bis(4,6-diamino-1,3,5-triazin-2-yl)-bicyclo[2.2.1]heptanes and 1,3/1,4-bis(4,6-diamino-1,3,5-triazin-2-yl)-cyclohexanes, and derivatives thereof, applications of these compounds in fields such as adhesives and paints, utilization of these compounds in flame-retarding, thermal stabilization and compatibilization methods of resins, thermosetting molding compositions and thermosetting expansion-molding compositions making use of these compounds, as well as polymeric microspheres also using these compounds. These compounds are expected to find wide spread industrial utility as various excellent properties can be obtained by using them.
    Type: Grant
    Filed: February 24, 1994
    Date of Patent: January 21, 1997
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Tetsuya Oishi, Hiroshi Ozawa, Minato Karasawa, Masamitsu Inomata, Izumi Mega, Atsuyoshi Yamauchi
  • Patent number: 5593916
    Abstract: A holding container which is made of a polyether ether ketone resin and is suitable for use in holding one or more substrates upon fabrication of the corresponding number of thin-film semiconductor substrates useful in driving a planar display, for example, a liquid crystal display.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 14, 1997
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Yoshihisa Gotoh, Motoo Kawamata, Toshiaki Takahashi
  • Patent number: 5591886
    Abstract: Disclosed herein is a crystallization apparatus for use in the crystallization of L-.alpha.-aspartyl-L-phenylalanine methyl ester. The stirring blade of the crystallization apparatus is composed of a band plate member for sweeping the bottom of a vessel and rod- or band plate-members arranged thereon and extending substantially vertically and horizontally.
    Type: Grant
    Filed: June 16, 1995
    Date of Patent: January 7, 1997
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hiroshi Ichiki, Ryoichi Taneda, Hiroyuki Itoh, Yoshitsugu Kono
  • Patent number: 5582774
    Abstract: Near-infrared absorbers which contain phthalocyanine derivatives in which the four benzene rings contained in the molecule independently have 1 to 4 substituents are light and thermal resistant and possess high molar extinction coefficients. Such near-infrared absorbers are useful in optical recording media, near-infrared absorption filters, and liquid crystal display devices.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: December 10, 1996
    Assignees: Mitsui Toatsu Chemicals, Incorporated, Yamamoto Chemicals, Incorporated
    Inventors: Hisato Itoh, Katashi Enomoto, Takahisa Oguchi, Tsutomu Nishizawa
  • Patent number: 5578419
    Abstract: Dyes suitable for use in the fabrication of color filters are described which contain one or more photopolymerizable substituents preferably represented by the following formula:D-(A-Yn.sup.1)n.sup.2 (1)where D represents a chromphoric nucleus, A denotes a connecting group, Y means the photopolymerizable group, n.sup.1 is 1-10,000, and n.sup.2 stands for an integer of 1-10. Also described are photosensitive resist resin compositions containing the dyes as well as color filters fabricated by curing the photosensitive resist resin compositions.
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: November 26, 1996
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hisato Itoh, Akio Karasawa, Kenichi Sugimoto
  • Patent number: 5567470
    Abstract: A blue dyestuff represented by the formula (2) ##STR1## wherein each of R.sub.1, R.sub.2 and R.sub.3 is independently a hydrogen atom, halogen atom, nitro group, hydroxy group, alkyl group which may have a substituent, alkoxy group, alkylsulfonylamino group or alkylcarbonylamino group, and each of R.sub.4 and R.sub.5 is independently an alkyl group which may have a substituent, and a heat-sensitive transfer sheet containing the above-mentioned dyestuff.
    Type: Grant
    Filed: August 18, 1995
    Date of Patent: October 22, 1996
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hitoshi Koshida, Isamu Ghoda, Tsukasa Ohyama, Keisuke Takuma
  • Patent number: 5540553
    Abstract: A carbon fiber covered on the surface with an aromatic polysulfone resin and then heated at 300.degree.-400.degree. C., a heat-resistant resin composition with excellent mechanical strength comprising 5-50% by weight of the carbon fiber and 95-50% by weight of a heat-resistant resin, and an internal combustion engine part, particularly an impeller of centrifugal compressor produced in one step, using the resin composition.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: July 30, 1996
    Assignees: Mitsui Toatsu Chemicals, Incorporated, Nissan Motor Co., Ltd.
    Inventors: Yoshihisa Goto, Toshihiko Tsutsumi, Toshiaki Takahashi, Takatoshi Sagawa
  • 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: 5519088
    Abstract: The present invention provides an aqueous gel comprising a polymer of (meth)acrylamide or particular (meth)acrylamide derivative(s), particulate metal oxide(s) and an aqueous medium, a process for producing said gel, and products utilizing said gel.This aqueous gel can be produced so as to have transparency, has fire resistance and can prevent the spreading of flames, and is highly elastic. The aqueous gel, when produced as a transparent gel, becomes cloudy when heated or cooled and is useful for the shielding of heat rays or cold radiation.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: May 21, 1996
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hiroshi Itoh, Takashi Abe, Hideo Kamio, Hitoshi Yamashita, Atsuhiko Nitta
  • Patent number: 5508363
    Abstract: Disclosed herein are a novel process for the preparation of alkylsilanes and alkenyl silanes by hydrosilylation of their corresponding silanes and unsaturated hydrocarbons in the presence or absence of a catalyst, a process for the preparation of polyalkenylsilanes (some of which are novel high molecular compounds) by the anionic coordination polymerization, radical polymerization or ionic polymerization of the alkenylsilanes, and a process for the production of silicon carbide by using these polyalkenylsilanes as prepolymers.
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: April 16, 1996
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Masayoshi Itoh, Ryo Takeuchi, Kenji Iwata