Patents Assigned to Sumitomo Chemical Co., Ltd.
  • Patent number: 5672751
    Abstract: A method for producing an alkylthiobenzamide by carrying out a reaction of a halobenzamide with an alkanethiol in the presence of a base in a heterogeneous solvent; a method for producing an alkylsulfinylbenzamide by carrying out a reaction of an alkylthiobenzamide with a halogen in a heterogeneous solvent; a method for producing an alkylsulfinylbenzamide by carrying out a reaction of a halobenzamide with an alkanethiol in the presence of a base in a heterogeneous solvent and a subsequent reaction with a halogen; and a method for producing a 1,2-benzisothiazol-3-one by carrying out a reaction of a 2-(alkylthio)benzamide with a halogenating agent.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: September 30, 1997
    Assignees: Sumitomo Seika Chemicals Co., Ltd., Sumitomo Chemical Co., Ltd.
    Inventors: Hirokazu Kagano, Hiroshi Goda, Shigeki Sakaue
  • Patent number: 5648533
    Abstract: There is disclosed a process of producing a 2-iminothiazoline derivative of the general formula [II], characterized in that a thiourea derivative of the general formula [I] is treated with an acid. Also disclosed are a process of producing an N-substituted N-arylcyanamide derivative of the general formula [VI], characterized in that an N-arylcyanamide derivative of the general formula [IV] is reacted with an allyl halide derivative of the general formula [V] in an aprotic polar solvent in the presence of an iodide and an alkali metal carbonate; and a process of producing an N-substituted N-arylthiourea derivative of the general formula [VII], characterized in that an N-substituted N-arylcyanamide derivative of the general formula [VI] obtained as described above is further reacted with a chemical species which generates sulfide ion or hydrogensulfide ion.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: July 15, 1997
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Katuhisa Masumoto, Toshio Nagatomi, Akihiko Nakamura, Yoshimi Yamada
  • Patent number: 5635553
    Abstract: A resin composition including (A) a mixture of one or more polyamide resins and one or more ethylene/vinyl alcohol copolymers; (B) 2,2'-methylenebis(4-methyl-6-tert-butylphenol); and (C) at least one polyalkyleneglycol is provided. The resin composition exhibits improved flowability during processing and remarkably decreased possibility of fish eye gel formation, thereby allowing for the production of formed products having a good external appearance.
    Type: Grant
    Filed: April 17, 1996
    Date of Patent: June 3, 1997
    Assignees: Sumitomo Chemical Co., Ltd., Ube Industries, Ltd.
    Inventors: Kanako Fukuda, Tetsuo Yamaguchi, Michiaki Yoshidomi, Yutaka Yamaguchi
  • Patent number: 5627244
    Abstract: Disclosed is a process for producing a polymer of an unsaturated carboxylic acid or a derivative thereof, the process comprising polymerizing an unsaturated carboxylic acid or a derivative thereof in a water-soluble organic solvent-water mixture in the presence of at least one polymerization catalyst selected from the group consisting of a metal compound of the formulaL.sub.p.M.X.sub.q ( 1)wherein M is Ti, Zr, Hf or V, L is cyclopentazienyl, indenyl, fluorenyl or a derivative of these, X is halo, H, lower alkyl, lower alkoxyl, aryloxy, phenyl or benzyl, p and q each represents an integer including 0 and p+q is equal to the valence of M, and a metal compound of the formulaR.M.Y.sub.r ( 2)wherein M is defined above, R is a group formed by bonding, via a lower alkylene or di(lower alkyl)silylene group, two groups being cyclopentadienyl, indenyl, fluorenyl or a derivative of these, Y is halo, H, lower alkyl, lower alkoxyl, aryloxy, phenyl or benzyl, r is equal to the valence number of M minus 2.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: May 6, 1997
    Assignees: Sumitomo Chemical Co., Ltd., Nichia Chemical Industries Ltd.
    Inventor: Tsuneyuki Sato
  • Patent number: 5621129
    Abstract: A tertiary phosphine compound of the formula (1): ##STR1## in which R.sup.1 and R.sup.1' are hydrogen atoms or together form --CH.dbd.CH--CH.dbd.CH--; R.sup.2 and R.sup.3 together form a group of the formula (a): ##STR2## in which --.circle-solid. represent a bond to be bonded to the R.sup.3 group, and --.smallcircle. represents a bond to be bonded to the R.sup.2 group when R.sup.1 and R.sup.1 ' together form --CH.dbd.CH--CH.dbd.CH--, or when R.sup.1 is a hydrogen atom, R.sup.2 and R.sup.3 together form --CH.dbd.CH--CH.dbd.CH-- or R.sup.2 is a hydrogen atom and R.sup.3 is a substituted or unsubstituted alkyl group, or a substituted or unsubstituted phenyl group; A.sup.1 is a 3-trifluoromethylphenyl group or a 3,5-bis(trifluoromethyl)phenyl group when R.sup.1 is a hydrogen atom and R.sup.2 and R.sup.3 together form --CH.dbd.CH--CH.dbd.CH--, or a substituted or unsubstituted phenyl group when R.sup.1 is not a hydrogen atom or when R.sup.2 and R.sup.3 do not together form --CH.dbd.CH--CH.dbd.CH--.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: April 15, 1997
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Tamio Hayashi, Masayoshi Minai, Kazunori Iwakura
  • Patent number: 5618567
    Abstract: A manufacturing device for multi-layer molded-products, which is provided with: a mold having a pair of upper and lower molds, one of which is a movable mold and the other is a fixed mold; and a movable member that presses a covering material against the molding surface of the upper or lower mold and that is capable of retreating out of the cavity of the mold. The device can be used in a manufacturing method for multi-layer molded-products which comprising the steps of supplying molten thermoplastic resin between the upper mold and the lower mold, and applying pressure to a forming cavity by clamping. With this method and device, it is possible to easily produce a multi-layer molded-product wherein the covering material, such as a woven fabric, is entangledly fused to and integrally formed on the surface of a base plate with at least one hole that is made of thermoplastic resin.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: April 8, 1997
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Takahisa Hara, Masahito Matsumoto
  • Patent number: 5616191
    Abstract: The aluminum conductor having increase of its electric resistivity kept small at ultra low temperature of 30.degree. K. or lower even after cyclic strain is given at ultra low temperature, by controlling the crystal structure of the high purity aluminum conductor with purity of 99.9-99.9999 wt % so as to consist of (i) a veritable single or a substantially single crystal consisting of a bundle of sub-grains which have their crystal axes in the same direction or in the directions within a couple of degrees of deviation as a whole which has a specific crystal axis of <111> or <100> or the crystal axes close thereto in the longitudinal direction of the aluminum conductor, or (ii) a polycrystal most of which grains have respective specific crystal axes of <111> and/or <100>, or the crystal axes close thereto with respect to each grain in the longitudinal direction of the aluminum conductor, and have specific grain size of 0.01 mm to 3.0 mm.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 1, 1997
    Assignees: Sumitomo Chemical Co., Ltd., The Texas A & M University Systems
    Inventors: Akihiko Takahashi, Hitoshi Yasuda, Karl T. Hartwig, Lacy C. McDonald, Hong Zou
  • Patent number: 5611565
    Abstract: A casing for storing an airbag forming part of an airbag restraint system in an automotive vehicle. The airbag storing casing comprises a main body formed of a material including (a) a thermoplastic elastomer composition in an amount of 100 parts by weight, the thermoplastic elastomer composition being prepared by a process including mixing 10 to 50 parts by weight of a polyolefin resin with 100 parts by weight of an olefin copolymer rubber to obtain a mixture, dynamically heat-treating the mixture in the presence of an organic peroxide, and then adding 5 to 50 parts by weight of a mineral oil relative to 100 parts by weight of the dynamically heat-treated mixture, the olefin copolymer rubber having a Mooney viscosity (ML.sub.1+4, 100.degree. C.) ranging from 50 to 100, and (b) a random copolymer resin in an amount of 20 to 50 parts by weight, containing propylene and at least one kind of 1-olefin other than propylene and having a Melt Flow Rate (230.degree. C.) ranging from 30 to 100.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: March 18, 1997
    Assignees: Nihon Plast Co., Ltd., Sumitomo Chemical Co., Ltd., Tanabe Chemical Industrial Inc.
    Inventors: Kazuo Inaba, Tatsuo Hamanaka, Mitsuyo Maeda
  • Patent number: 5597929
    Abstract: There is disclosed a process for producing a 2-(tetrazol-5-yl)-4-oxo-4H-benzopyran of general formula (1): ##STR1## which comprises reacting a hydroxyacetophenone of general formula (2): ##STR2## with a tetrazole compound of general formula (3): ##STR3## in the presence of a base in a solvent composed mainly of at least one selected from hydrocarbons, halogenated hydrocarbons and alcohols, and then treating the reaction mixture under acidic conditions.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: January 28, 1997
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Hideki Ushio, Takayuki Higashii
  • Patent number: 5591871
    Abstract: A bislactone compound represented by the general formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each independently represent a hydrogen atom or an alkyl group having 6 or less carbon atoms, and R.sub.3, R.sub.4, R.sub.5 and R.sub.6 each independently represent a hydrogen atom, a hydroxy group or an alkyl group having 6 or less carbon atoms, which is useful as a stabilizer for polymers and as a raw material of a positive type resist:a process for producing the bislactone compound; anda positive resist composition comprising the bislactone compound.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: January 7, 1997
    Assignee: Sumitomo Chemical Co., Ltd
    Inventors: Naoko Suzuki, Hirotoshi Nakanishi, Kyouko Nagase
  • Patent number: 5585061
    Abstract: A multilayer molded article is produced using a composite skin layer made of a skin material and a foam sheet on a core layer of a thermoplastic resin in which a tensile modulus E of the skin material is not larger than 950 kg/cm.sup.2, and a tensile modulus E (kg/cm.sup.2), a heat shrinkage factor F (%) and a thickness t (cm) of the skin material satisfy the following relationship:20/(E.times.t)+F.gtoreq.2.5,which method produces a large size multilayer molded article having a complicated shape and no wrinkles, breakage or uneven marks in the skin material on the surface of the article.
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: December 17, 1996
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Takahisa Hara, Masahito Matsumoto, Hitoshi Nakada
  • Patent number: 5573861
    Abstract: The aluminum conductor having increase of its electric resistivity kept small at ultra low temperature of 30.degree. K. or lower even after cyclic strain is given at ultra low temperature, by controlling the crystal structure of the high purity aluminum conductor with purity of 99.9-99.9999 wt %. The crystal structure consist of (i) a veritable single or a substantially single crystal consisting of a bundle of sub-grains which have their crystal axes in the same direction or in the directions within a couple of degrees of deviation as a whole which has a specific crystal axis of <111> or <100> or the crystal axes close thereto in the longitudinal direction of the aluminum conductor, or (ii) a polycrystal most of which grains have respective specific crystal axes of <111> and/or <100>, or the crystal axes close thereto with respect to each grain in the longitudinal direction of the aluminum conductor, and have specific grain size of 0.01 mm to 3.0 mm.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: November 12, 1996
    Assignees: Sumitomo Chemical Co., Ltd., The Texas A & M University Systems
    Inventors: Akihiko Takahashi, Hitoshi Yasuda, Karl T. Hartwig, Lacy C. McDonald, Hong Zou
  • Patent number: 5573582
    Abstract: The present invention discloses a process for preparing a fine-particulate metal hydroxide comprising aluminum hydroxide as a major component which comprises continuously supplying water and a mixture of an aluminum alkoxide and at least one alkoxide of a metal selected from Mg, Ca, La, Fe, Si, Ti and Zr, to a high shear rate stirring area and a process for preparing a fine-particulate metal oxide comprising aluminum oxide as a major component which comprises drying and then calcining said metal hydroxide at 500.degree.-1500.degree. C.
    Type: Grant
    Filed: June 23, 1995
    Date of Patent: November 12, 1996
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Masamichi Inui, Yoshiaki Takeuchi, Yasushi Teshima, Koji Yamamoto, Makio Kimura, Takahiro Ishida
  • Patent number: 5556995
    Abstract: A process for preparing the polyhydric phenol compounds represented by the formula (I): ##STR1## (wherein R.sub.1, R.sub.2 and R.sub.3 represent independently hydrogen atom, alkyl group, etc.) which comprises subjecting the compounds represented by the formula (II): ##STR2## (wherein R.sub.1, R.sub.2 and R.sub.3 are as defined above) to a condensation reaction with pyrogallol in the presence of an organic solvent and an acid catalyst.
    Type: Grant
    Filed: January 26, 1995
    Date of Patent: September 17, 1996
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Naoko Suzuki, Hirotoshi Nakanishi, Jun Tomioka
  • Patent number: 5556980
    Abstract: 2-Methyl-3-(2,2,6,6-tetramethyl-4-piperidylamino)-N-(2,2,6,6-tetramethyl-4- piperidyl)-propionamide represented by the following formula, a process for producing the same and a stabilized organic material composition containing the same wherein the piperidine compound imparts excellent properties, such as light stability or thermal stability to the organic materials.
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: September 17, 1996
    Assignees: Sumitomo Chemical Co., Ltd., Kyodo Chemical Co., Ltd.
    Inventors: Seiji Sagawa, Toshio Kano, Motohiko Samizo, Fumitoshi Kojima, Tetsuo Yamaguchi
  • Patent number: 5545384
    Abstract: A process for the production of aluminum hydroxide from an alumina-containing ore comprising, in a process for the production of aluminum hydroxide involving extraction of alumina from an alumina-containing ore by an aqueous alkaline solution, supplying a slurry containing the alumina-containing ore at a high solid content which is prepared from a small amount of an alkaline solution together with an aqueous alkaline solution which is so preheated to a temperature that a preheated temperature is enough high to have a temperature after the mixing with the slurry which is higher than an extraction temperature of alumina, simultaneously or after the mixing them, to an extraction apparatus comprising of a tube reactor, extracting alumina from the alumina-containing ore under extraction conditions of a temperature of 120.degree.-160.degree. C.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: August 13, 1996
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Takuo Harato, Takahiro Ishida, Yoshio Kumagae, Michikazu Inami, Kazuhisa Ishibashi, Mitsuaki Murakami
  • Patent number: 5532208
    Abstract: There are disclosed novel pyrimidone derivatives of the formula I: ##STR1## wherein X is hydrogen, chlorine, methyl or ethyl, R.sup.2 is hydrogen or methyl, and Q is ##STR2## A is fluorine, chlorine or bromine; and R.sup.1 is alkyl, alkenyl, alkynyl, alkoxyalkyl or haloalkyl.Also disclosed are a herbicidal composition containing a herbicidally effective amount of the compound (I) as an active ingredient and a method for exterminating undesired weeds by applying a herbicidally effective amount of the compound (I) to an area where the undesired weeds grow or will grow.
    Type: Grant
    Filed: August 17, 1994
    Date of Patent: July 2, 1996
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Eiki Nagano, Susumu Takemura, Masayuki Enomoto, Masaharu Sakaki, Satoru Kizawa
  • Patent number: 5527623
    Abstract: An aqueous emulsion comprising a copolymer comprising ethylene, vinyl chloride, and vinyl acetate and having a glass transition temperature of from -15.degree. to 35.degree. C., an emulsion of a rosin ester having a softening point of from 110.degree. to 150.degree. C. and a Gardner color scale of not higher than 5, and an emulsion of a wax having a melting point of from 50.degree. to 100.degree. C., and an easily macerating water-proof paper obtained by coating the aqueous emulsion on at least one surface of a base paper. The paper coated with the aqueous emulsion has excellent moisture-proof property, water repellency, and easily macerating property, and does not cause blocking.
    Type: Grant
    Filed: August 14, 1995
    Date of Patent: June 18, 1996
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Akitoshi Takahira, Yuuzi Yoshii
  • Patent number: 5523437
    Abstract: A tertiary phosphine compound of the formula (1): ##STR1## wherein R.sup.1 and R.sup.2 represent independently from each other a hydrogen atom or a methyl group, or together form --CH.dbd.CH--CH.dbd.CH--; R.sup.3 is a hydrogen atom or a cycloalkyl group having 5 to 7 carbon atoms or a lower alkyl group which may be substituted with a halogen atom, a lower alkoxy group, a lower alkoxyalkoxy group or a phenyl group; X.sup.1 is a halogen atom when both R.sup.1 and R.sup.2 are hydrogen atoms, or a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group when at least one of R.sup.1 and R.sup.2 is not a hydrogen atoms; and m is an integer of 1 to 5, which is useful as a ligand of a transition metal complex that can catalyze various reactions.
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: June 4, 1996
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Tamio Hayashi, Yasuhiro Uozumi, Kazunori Iwakura, Isao Kurimoto, Masayoshi Minai
  • Patent number: 5521251
    Abstract: A propylene random copolymer composition which contains a mixture of 0.05-2.7% by weight of a crystalline propylene homopolymer (A) and 97.3-99.95% by weight of a random copolymer (B) of propylene and at least one .alpha.-olefin other than propylene which copolymer has a bound propylene content of 40-85% by weight and a Mw/Mn of not more than 5.5 meets both of the two mutually conflicting requirements of further improving the transparency inherent to polypropylene sheet and film, and attaining excellent solvent resistance.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: May 28, 1996
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Makoto Satoh, Ritsuo Setoh