Patents Assigned to Mitsui
  • Patent number: 4897491
    Abstract: The guanidine derivative represented by the formula [III], ##STR1## (commonly known under the name "Cimetidine") is produced by reaction of the compound represented by the formula [I], ##STR2## with a compound represented by the formula [II], ##STR3## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6, is each hydrogen atom, a lower alkyl group, phenyl group, or a radical of --OR.sub.7 or --COOR.sub.7, in which R.sub.7 is hydrogen atom, a lower alkyl group or an alkali metal, followed by reaction with methylamine.
    Type: Grant
    Filed: March 9, 1989
    Date of Patent: January 30, 1990
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Noboru Kawasaki, Yoshiaki Noguchi, Kenichi Fujii
  • Patent number: 4895947
    Abstract: 1-Acyl-2-pyrazoline derivatives represented by the formula ##STR1## where R.sup.1 denotes a hydrogen atom, pyridyl group, pyrazinyl group, alkyl group, aryl group, or alkoxy group; and R.sup.2, R.sup.3, and R.sup.4 independently denote a hydrogen atom, furyl group, pyridyl group, alkyl group, or aryl group, are produced by cyclizing by heating an acylhydrazone derivative represented by the formula ##STR2## where R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are defined as above, to produce compounds having useful anti-cerebral edema activity.
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: January 23, 1990
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Hiroyuki Yamashita, Kunio Okumura, Hajime Iizuka, Norio Ohto
  • Patent number: 4894475
    Abstract: Disclosed are alpha-acyloxyketone derivatives which are useful as intermediates for production of N-cyano-N'-methyl-N"-[2-{(5-methyl-1H-imidazol-4-yl)methylthio}ethyl]guani dine (common name: Cimetidine; Cimetidine applies hereinafter) and Cimetidine-related compounds which have an action of controlling secretion of gastric acid and are useful as a drug for treating gastric ulcer.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: January 16, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Hiroaki Tan, Koji Kato, Junichi Imuta, Noriaki Kihara
  • Patent number: 4894421
    Abstract: A novel low-crystalline propylene random copolymer composition comprising[I] 60 to 95% by weight of a propylene random copolymer and[II] 5 to 40% by weight of a low-crystalline propylene random copolymerwhich has excellent heat-sealability, heat-seal imparting property, transparency and antiblocking property and containing a reduced amount of a hydrocarbon-soluble component, a process for production thereof, and polypropylene composite laminated structure having improved heat-sealability and heat seal strength at low temperatures.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: January 16, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Mamoru Kioka, Masahiro Sugi, Akinori Toyota, Norio Kashiwa
  • Patent number: 4894432
    Abstract: A triphenol type compound represented by the following formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 independently represent hydrogen, a halogen, a C.sub.1 -C.sub.5 alkyl group or a C.sub.1 -C.sub.5 alkoxy group.The triphenol type compound can be used, as a branching agent, for the production of a polycarbonate comprising (A) a carbonic acid component unit, (B) a divalent phenol component unit, and (C) a triphenol type compound component unit derived from the above-mentioned triphenol type compound. The triphenol type compound unit (C) is used in an amount of 0.01 to 10 mole %, based on the divalent phenol component unit (B) and the intrinsic viscosity [.eta.], determined at 25.degree. C. in methylene chloride, of the polycarbonate is 0.4 to 1.0 dl/g and the glass transition temperature (Tg), determined by a differential scanning type calorimeter is 150.degree. C. to 300.degree. C.
    Type: Grant
    Filed: August 3, 1988
    Date of Patent: January 16, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Kenichi Mizuno, Yozo Jujo, Hajime Oyoshi
  • Patent number: 4894281
    Abstract: Disclosed is a fiber-reinforced polymer molded body which comprises a matrix of a polymer having a processing temperature lower than 220.degree. C. and at least one reinforcing layer of a molecularly oriented and silane-crosslinked ultra-high-molecular-weight polyethylene fiber, which is laminated with or embedded in the matrix, wherein the reinforcing layer substantially retains the orientation crystal structure of the ultra-high-molecular-weight polyethylene fiber.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: January 16, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Kazuo Yagi, Hitoshi Mantoku
  • Patent number: 4894289
    Abstract: A laminate comprising (a) a layer of a partially crosslinked graft-modified polyolefin elastomer formed by dynamically heat-treating a mixture of a peroxide-crosslinking olefin copolymer rubber and an olefinic plastic with an unsaturated carboxylic acid or derivative thereof, an unsaturated epoxy monomer or an unsaturated hydroxy monomer in the presence of an organic peroxide and (b) a layer of a polyamide, polyurethane or polyester is excellent in weatherability, heat resistance and dimension stability, and this laminate is effectively molded into an interior part or sealing material of an automobile, especially a glass run channel. The glass run channel molded from this laminate is excellent in the durability, the tightness of contact with glass at the time of closing and the sliding smoothness at the opening-closing operation.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: January 16, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Yasuhiko Otawa, Kunihide Hiraoka, Toshiyuki Maeda, Katsuo Okamoto, Noboru Sakamaki, Shizuo Shimizu
  • Patent number: 4894487
    Abstract: This invention relates to a novel preparation process of 4-(4-hydroxyphenyl)-cyclohexanol, which comprises subjecting 4-(4-hydroxphenyl)-3-cyclohexen-1-ol to reduction. 4-(4-Hydroxyphenyl)-cyclohexanol is a compound useful as a monomer for liquid crystalline polyesters and the like.
    Type: Grant
    Filed: August 4, 1988
    Date of Patent: January 16, 1990
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Tohru Miura, Masayuki Furuya, Teruyuki Nagata
  • Patent number: 4891431
    Abstract: A process for preparing 2-unsubstituted imidazoles which comprises reacting an .alpha.-hydroxycarbonyl compound with a formamide in such amounts as to make the molar ratio of said formamide to said hydroxycarbonyl compound not more than 2 at a reaction temperature of 100.degree.-170.degree. C. in an atmosphere of ammonia gas. According to this process, 2-unsubstituted imidazoles may be obtained in very high yields. In addition, because no great excess of formamide is used in carrying out the reaction, an effect of not requiring the recovery operation incident to decomposition of formamide is obtained as well. And by removing formic acid formed as a by-product by the reaction, a reactor and separation equipment such as a distillation column are not corroded, and imidazoles of a high purity can be obtained.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: January 2, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Sanehiro Yamamoto, Mitsuki Yasuhara, Fujihisa Matsunaga, Masato Okano, Mitsunori Nakamura
  • Patent number: 4891453
    Abstract: A process is disclosed which is capable of producing p,p'-biphenol of high purity by the dealkylation reaction of 3,3',5,5'-tetra-t-butyl-4,4'-dihydroxybiphenyl and which yet allows isobutene to be recovered in high yield. The process performs the dealkylation reaction of 3,3',5,5'-tetra-t-butyl-4,4'-dihydroxybiphenyl in the presence of an acid catalyst using as a solvent a saturated hydrocarbon having a boiling point of 190.degree. C. or above, an alicyclic hydrocarbon having a boiling point of 190.degree. C. or above, a hydrocarbon with an iodine value of no more than 1, sulfolane, or a mixture of these solvents. Also disclosed is a process for producing p,p'-biphenol from a mixture of 2,6-di-t-butyl-phenol and 3,3',5,5'-tetra-t-butyl-4,4'-diphenoquinone or from a mixture of 2,6-di-t-butylphenol, 3,3',5,5'-tetra-t-butyl-4,4'-diphenoquinone and 3,3',5,5'-tetra-t-butyl-4,4'-dihydroxybiphenyl.
    Type: Grant
    Filed: September 21, 1988
    Date of Patent: January 2, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Michio Tanaka, Yoshito Kurano, Katsuo Taniguchi, Masayasu Ishibashi
  • Patent number: 4891465
    Abstract: In a process for producing an alkyl group-substituted aromatic hydrocarbon according to the present invention, (i) an aromatic hydrocarbon is reacted with (ii) an alkylating agent selected from the group consisting of olefins, lower aliphatic alcohols and alkyl halides in the presence of a mordenite-type zeolite catalyst treated with a fluorine-containing compound, and therefore the conversion of the aromatic compound can be increased and further it is possible to introduce the specific number of alkyl groups into the specific position of the aromatic compound.In particular, when biphenyl is used as the aromatic hydrocarbon and propylene is used as the alkylating agent, p,p'-diisopropylbiphenyl can be obtained in a high yield and high selectivity.
    Type: Grant
    Filed: July 6, 1988
    Date of Patent: January 2, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Katsuo Taniguchi, Michio Tanaka, Kazunori Takahata, Naoya Sakamoto, Toshihiro Takai, Yoshito Kurano, Masayasu Ishibashi
  • Patent number: 4891392
    Abstract: A polyolefin resin composition is produced by pulverizing and surface-treating an inorganic filler together with a surface treatment agent in a dry or semi-dry pulverizing means, mixing the thus-treated inorganic filler with a specified amount of a polyolefin resin and granulating the resultant mixture, and thereafter mixing the thus-obtained granular mixture with an additional granular or pelletized polyolefin resin at a specified ratio.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: January 2, 1990
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Masaru Abe, Yoichi Kawai, Minoru Hoshino, Katsumi Sekiguchi
  • Patent number: 4889762
    Abstract: Molded articles of thermoplastic elastomer obtained in accordance with the present invention comprise a molded product prepared from a thermoplastic elastomer containing a partially cross-linked product of ethylene/.alpha.-olefin copolymer rubber and a polyolefin resin, a primer layer containing at least one compound selected from the group of saturated polyesters and chlorinated polyolefins and formed on the surface of said molded article, and a topcoat layer containing at least one compound selected from the group of saturated polyesters, acrylic ester resins, polyvinyl chloride and polyisocyanate (provided that the topcoat layer contains at least the acrylic ester resin when the primer layer consists only of the saturated polyester) and formed on said primer layer.
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: December 26, 1989
    Assignees: Mitsui Petrochemical Industries Ltd., Tokushu Shikiryo Color & Chemical Inc.
    Inventors: Akira Uchiyama, Katsuo Okamoto
  • Patent number: 4889551
    Abstract: Novel 3-substituted phenyl-2-isoxazoline-5-carboxylic acids or esters thereof. These compounds have excellent properties as plant growth regulators.
    Type: Grant
    Filed: September 2, 1987
    Date of Patent: December 26, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Kengo Oda, Tsutomu Ishii, Yukiharu Fukushi, Yuji Enomoto, Makoto Nishida, Yoshikata Hojo
  • Patent number: 4888135
    Abstract: An electrically conductive powder having good stability against oxidation, good storage stability, good in anti-migratory action and capable of constituting electrically conductive composition having high electrical conductivity and good resistance to heat and the wet, may be constituted by copper particles, a silver coating material coating a part or the total of the copper particles and a titanate coupling agent combined to the copper particles and/or the silver coating material.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: December 19, 1989
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Masayuki Tsunaga, Kazuaki Yuba, Youichi Kaneko
  • Patent number: 4888216
    Abstract: A process for preparing a copper powder for electroconductive paints, which comprises adding to a dispersion bath of copper powder and a dispersion medium a mixture of a titanium acylate polymer and a higher carboxylic acid ester to form a film of the titanium acylate polymer and the higher caboxylic acid ester on the surfaces of the particles of said copper powder, and if necessary, removing the dispersion medium to obtain the copper powder for electroconductive paints. The copper powder thus obtained is coated on the surfaces of its particles with the titanium acylate polymer and the higher carboxylic acid ester.
    Type: Grant
    Filed: March 27, 1989
    Date of Patent: December 19, 1989
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Kanetaro Sannohe, Hirohisa Senzaki, Yoshio Sohama
  • Patent number: 4886912
    Abstract: The present invention provides a cyanoguanidine derivative which is a precursor for the synthesis of N-cyano-N'-methyl-N"-[2-{(5-methyl-1H-imidazol-4-yl)methylthio}ethyl]-guan idine (Cimetidine) or its related compound, which has an action of controlling secretion of acid in the stomach based on the histamine H.sub.2 receptor antagonism and is valuable as a drug for treating gastric ulcer. This cyanoguanidine derivative is prepared by reacting other cyanoguanidine derivative with a halogenating agent.
    Type: Grant
    Filed: February 17, 1988
    Date of Patent: December 12, 1989
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Hiroaki Tan, Keiichi Yokoyama, Noriaki Kihara
  • Patent number: 4886910
    Abstract: The present invention provides a cyanoguanidine derivtive which is a precursor for the synthesis of N-cyano-N'-methyl-N"-[2-{(5-methyl-1H-imidazol-4-yl)methylothio}ethyl]-gua nidine (Cimetidine) or its relted compound, which has an action of controlling secretion of acid in the stomach based on the histamine H.sub.2 receptor antagonism and is valuable as a drug for treating gastric ulcer. This cyanoguanidine derivative is prepared by reacting a haloketone derivative with an ammonium salt and a lower fatty acid salt or by reacting other cyanoguanidine derivative with an ammonium salt.
    Type: Grant
    Filed: February 17, 1988
    Date of Patent: December 12, 1989
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Hiroaki Tan, Koji Kato, Junichi Imuta, Noriaki Kihara
  • Patent number: 4886654
    Abstract: A process for producing barium titanates which comprises admixing a titanium alkoxide with a barium salt of a lower carboxylic acid in the presence of an organic solvent containing at least ethylene glycol monomethyl ether to provide a uniform mixture, bringing the mixture in contact with water to form a gelated product and drying and calcining the gelated product.
    Type: Grant
    Filed: June 30, 1988
    Date of Patent: December 12, 1989
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Akihito Ohga, Akira Itani
  • Patent number: 4886704
    Abstract: This invention relates to a strippable coating film for use as a masking material serving to create attractively finished boundaries, for example, in multi-color painting of automobiles and the like, as well as a coating method using such a coating film.A coating film containing 1 to 20 parts by weight of carbon black per 100 parts by weight of the resin component present therein is suitable. Especially preferred is a coating film formed of an acrylic emulsion paint and having an adhesion to the substrate of 20 to 1000 g/inch as expressed in terms of 180.degree. peeling strength. It is disclosed that, by equipping a YAG laser with a Q-switching oscillator unit and operating the Q-switch at a pulse repetition frequency of 0.5 to 30 kHz, the coating film can be cleanly cut to achieve an attractive finish in multi-color painting.
    Type: Grant
    Filed: June 26, 1987
    Date of Patent: December 12, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Keiichi Kamada, Motoyuki Torikai, Yasuo Ohkita