Patents Assigned to Mitsubishi Petrochemical Company, Ltd.
  • Patent number: 5418287
    Abstract: A resin composition comprising the following component A, component B and component C:component A of polyphenylene ether resin; component B of crystalline polyolefin resin; and component C of graft modified copolymer in which an unsaturated copolymer consisting of ethylene or at least one of .alpha.-olefins having 3 to 12 carbon atoms and at least one of chain nonconjugated dienes of the following general formula is modified with a monomer capable of radical polymerization such as styrene. ##STR1## This resin composition has an improved impact strength, keeping heat resistance and mechanical strength characteristic of polyphenylene ether resins, and molding properties and resistance to organic solvents characteristic of polyolefin resins.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: May 23, 1995
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Tomohiko Tanaka, Hiroshi Nakano, Hiroyuki Satoh, Shiroh Gotoh
  • Patent number: 5403887
    Abstract: A resin composition comprises the following components (A) and (B):Component (A): 90 to 10% by weight of modified polyolefin resin obtained by introducing a group selected from a) hydroxyl group, b) epoxy group and c) carboxyl group into a crystalline olefin copolymer consisting of at least one of ethylene and .alpha.-olefins each having 3 to 8 carbon atoms and at least one chain non-conjugated diene;Component (B): 10 to 90% by weight of polyamide resin or saturated polyester resin.This resin composition is suitable for use as a molding material for automotive, electrical parts and the like.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: April 4, 1995
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Michiharu Kihira, Hiroshi Nakano
  • Patent number: 5378735
    Abstract: An ultraviolet-curing covering composition comprising Component A which is obtained by reacting a hydroxyl group-containing polyfunctional acrylate with a silane coupling agent containing an isocyanate group(s), Component B of a polyfunctional acrylate having 3 or more acryloyl groups in the molecule, Component C of a silica sol in an organic solvent, and Component D of a photopolymerization initiator. This composition forms a coating film shows excellent hardwearing properties and adhesion to plastic substrates after ultraviolet-curing. Blending Component E of an acrylic resin and Component F of a solvent to the composition forms a coating film which can be processed before curing.
    Type: Grant
    Filed: April 6, 1993
    Date of Patent: January 3, 1995
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Noritaka Hosokawa, Kazuhide Hayama
  • Patent number: 5362485
    Abstract: A hair cosmetic composition containing a graft copolymer or an alternating block copolymer, each of which comprises a first unit containing a polysiloxane group and a second unit containing a polymer of unsaturated monomers is provided. The first and second units are linked by sulfide linkage. The hair cosmetic composition provides hair with softness, luster, combing smoothness, styling ease, enhanced volume, and has good hairstyle retainability and damage-restoring characteristics.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: November 8, 1994
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Kazuhide Hayama, Kanji Narazaki, Yukio Saitoh, Tomoaki Hiwatashi, Isao Itoh, Sigeoki Kawaguchi
  • Patent number: 5347056
    Abstract: This invention relates to a process for producing .alpha., .beta.-unsaturated alcohol, which uses unsaturated aldehyde as a starting material, and in which only the aldehyde group in the unsaturated aldehyde is selectively hydrogenated by hydrogen transfer reaction, while the carbon-carbon double bond is left as it is. The method is characterized by using a catalyst which contains at least one oxide selected from the group consisting of oxides of yttrium, lanthanum, praseodymium, neodymium and samarium, as a main active ingredient. The catalysts exhibit high activity and selectivity, as well as a long life span.
    Type: Grant
    Filed: August 4, 1993
    Date of Patent: September 13, 1994
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Yoshihisa Watanabe, Mitsuhiko Kurashige
  • Patent number: 5331054
    Abstract: A propylene copolymer composition enabling the production of a film having excellent low-temperature heat sealing ability and blocking resistance, is obtained by blending 1 to 70 wt % of a component A and 30 to 99 wt % of a component B. The component A comprises either a propylene homopolymer or a copolymer of propylene with not more than 10 mol % of ethylene or an a-olefin having a carbon number of 4 to 20, and has a molecular weight distribution (Mw/Mn) of not more than 3, a mean elution temperature of 40.degree. to 100.degree. C., and an elution dispersion degree (.sigma. value) of not more than 10. The component B comprises a copolymer of propylene with ethylene and/or an .alpha.-olefin having a carbon number of 4 to 20, and has a molecular weight distribution (Mw/Mn) of 3.5 to 10.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: July 19, 1994
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Takashi Fujita, Toshihiko Sugano, Hajime Mizuno, Hideshi Uchino
  • Patent number: 5324868
    Abstract: 4,4'-Biphenol is prepared through debutylation of 3,3', 5,5'-tetra-tert-butyl-4,4'-biphenol in an organic solvent in the presence of an acid catalyst wherein the debutylation is carried out continuously using at least two reactors aligned in series, with a high yield and high purity on an industrial level.
    Type: Grant
    Filed: May 24, 1993
    Date of Patent: June 28, 1994
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Masashi Inaba, Norioki Mine, Mamoru Mizutani
  • Patent number: 5321080
    Abstract: A resin composition comprising an olefin resin (A), a copolymer of olefin with non-conjugated diene (B) and at least one polymer (C) selected from the group consisting of the following polymers;C1: diene polymer containing a hydroxyl group or the hydrogenation product thereof,C2: polymer containing a hydroxyl group,C3: polymer containing a carboxyl group (including an acid anhydride group),C4: polymer containing an amino group and/or imino group, andC5: polymer containing an epoxy group; and optionally an elastomer (D), filler (E) and at least one compound (F) selected from the group consisting of the following compounds;F1: organotin compound,F2: tertiary amine compound, andF3: phosphorus oxy compound.The moldings prepared from this resin composition have remarkable adhesive properties for paints, adhesives and printing inks. Thus, paints, etc. may be applied directly to the moldings, without surface treatment or washing thereof.
    Type: Grant
    Filed: July 29, 1992
    Date of Patent: June 14, 1994
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Yuta Kumano, Sadao Kitagawa, Mitsushige Baba, Shiroh Gotoh
  • Patent number: 5298593
    Abstract: A thermotropic liquid crystalline polyester is produced by carrying out polycondensation of ester monomer [I-2], an aromatic dicarboxylic acid [II] and an aromatic carboxylic acid [III-2]. The amounts of the compounds [I-2] and [II] are substantially equivalent and the amount of the compound [III-2] is not more than 20 times that of [I-2] by mole. A thermotropic liquid crystalline polyester having good heat resistance, fluidity and uniformity can be produced.
    Type: Grant
    Filed: June 24, 1992
    Date of Patent: March 29, 1994
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Eisuke Fujiwara, Haruyo Kozaki
  • Patent number: 5288360
    Abstract: An adhesive resin composition comprising a polymer of a radically polymerizable epoxy resin (I) and a monomer (c), the radically polymerizable epoxy resin (I) being a reaction product between an epoxy resin (a) and a radically polymerizable monomer (b) having a function group reactive to epoxy group or hydroxyl group in said epoxy resin (a), having an equivalent ratio (b)/(a)=0.01.about.0.9 and said monomer (c) being copolymerizable with said radically polymerizable epoxy resin (I) and containing alkyl (meth)acrylate and/or a fluorine-containing unsaturated monomer serving as an indispensable component. The adhesive resin composition has an excellent adhesion between fluorine-contained resins and metal substrates.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: February 22, 1994
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Kazuhide Hayama, Kazuyuki Hata, Keizo Abe, Takahiro Ozu
  • Patent number: 5264085
    Abstract: A method of continuously distilling off the components of a mixture containing phenols, water and methanol using a single distillation column, wherein methanol is recovered from the top of the column, water containing phenols is dragged as a side stream from a recovery section of the column, and phenols are recovered as a bottom product. The method permits efficient separation by the single distillation column of the three components with high purity and low utility energy.
    Type: Grant
    Filed: August 20, 1992
    Date of Patent: November 23, 1993
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Masashi Inaba, Yoshikazu Higaki, Kimikatsu Jinno, Mitsugi Kataoka, Norio Sato, Masayuki Honda
  • Patent number: 5250655
    Abstract: An aromatic polycarbonate of improved color value and high molecular weight is obtained by the addition of phosphorous acid and/or a phosphorous ester to the melt polycondensation reaction medium containing aromatic diol, carbonate diester and a metal-containing compound as ester interchange catalyst during the polycondensation reaction
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: October 5, 1993
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Masuzo Yokoyama, Junji Takano, Kazuhide Takakura
  • Patent number: 5223576
    Abstract: A thermoplastic resin composition comprises the following components (A) and (B):component (A): 10 to 90% by weight polyphenylene ether resin,component (B): 90 to 10% by weight unsaturated copolymer resin obtained by copolymerizing at least one .alpha.-olefin having 2 to 12 carbon atoms and a diene compound having 4 to 15 carbon atoms, and containing 0.01 to 50 mol % of diene compound. This resin composition has excellent resistance to organic solvents and superior mechanical properties.
    Type: Grant
    Filed: November 5, 1991
    Date of Patent: June 29, 1993
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Hiroshi Nakano, Takayuki Inoue, Shiroh Gotoh, Michiharu Kihira
  • Patent number: 5182349
    Abstract: A copolymer is manufactured by allowing ethylene (A) and vinyl compounds (B) represented by the following general formula to undergo radical polymerization at a pressure of 1000-5000 kg/cm.sup.2 and a temperature of 100.degree.-400.degree. C., ##STR1## wherein R.sub.1 and R.sub.2 are each an independent hydrogen atom or a methyl group, R.sub.3 is a hydrogen atom or an alkyl group of 1-4 carbon atoms; a ratio of (B) to the sum of (A) and (B) is less than 1 mol %; a proportion of the amount of vinyl compounds (B), which are not successively bonded at all to the units (B) in the chain, but bonded to unlike units (A) on both sides thereof, to the total amount of (B) units in the copolymer is at least a 83%; and an MFR of the copolymer ranges from 0.1 to 200 g/10 min.Although the copolymer contains only a small amount of the vinyl compound (B) it nevertheless has excellent photo stabilizing effects.
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: January 26, 1993
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Tadao Okada, Hajime Ikeno, Yuji Ozeki, Yoshikazu Higaki, Koshi Matsubara, Kenichi Nakamura
  • Patent number: 5169885
    Abstract: Phosphite compounds of the formula ##STR1## wherein R.sup.1 is an alkyl having 1 to 22 carbon atoms, and use thereof. The phosphite compounds of the present invention show stabilizing action on organic materials and are useful as antioxidants. A combined use of the compounds of the present invention with hindered phenol compounds, light stabilizers or thioalkanoate compounds further improves stabilizing effect.
    Type: Grant
    Filed: October 30, 1990
    Date of Patent: December 8, 1992
    Assignees: Yoshitomi Pharmaceutical Industries, Ltd., Mitsubishi Petrochemical Company, Ltd.
    Inventors: Naoki Hanayama, Kazuo Nakagawa, Nobuyuki Hayashi, Akiyoshi Onishi
  • Patent number: 5166276
    Abstract: A polymer suitable for use in hair care products comprising a copolymer comprising(a) a unit of a hydrophilic ethylenically unsaturated monomer such as dimethylaminoethyl methacrylate in a quantity of 15 to 99.9% by weight;(b) a unit of an ethylenically unsaturated monomer having a polysiloxane group such as: ##STR1## in a quantity of 0.1 to 85% by weight; and (c) a unit of an optional hydrophobic unsaturated monomer such as lauryl methacrylate in a quantity of 0 to 84.9% by weight.
    Type: Grant
    Filed: July 6, 1990
    Date of Patent: November 24, 1992
    Assignee: Mitsubishi Petrochemical Company Ltd.
    Inventors: Kazuhide Hayama, Kanji Narazaki, Sigeoki Kawaguchi
  • Patent number: 5099298
    Abstract: A magnetically sensitive semiconductor includes an emitter electrode, at least three collector electrodes arranged substantially equidistantly from the emitter electrode and spaced apart substantially equidistantly in order to extract carriers outputted by the emitter electrode and migrating through a semiconductor, and first base electrodes for accelerating the carriers in the direction of the collector electrodes from the emitter electrode, the collector electrodes at both ends of the at least three collector electrodes serving as collector output electrodes. By virtue of such an arrangement, carriers unnecessary for field detection are eliminated to provide a magnetically sensitive semiconductor having excellent sensitivity.
    Type: Grant
    Filed: May 7, 1991
    Date of Patent: March 24, 1992
    Assignee: Mitsubishi Petrochemical Company Ltd.
    Inventors: Tetsuro Nakamura, Satoshi Kikuchi
  • Patent number: 5077424
    Abstract: Phosphite compounds represented by the formula ##STR1## wherein R.sup.1 stands for a tertiary hydrocarbyl group, R.sup.2 stands for an alkyl group, an aralkyl group which may be substituted, an aryl group or a cycloalkyl group and n stands for 0, 1 or 2.Such compounds possess stabilizing action against organic materials, particularly antioxidant action, and are useful as antioxidants for preventing deterioration by oxidation of organic materials.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: December 31, 1991
    Assignees: Yoshitomi Pharmaceutical Industries, Ltd., Mitsubishi Petrochemical Company, Ltd.
    Inventors: Naoki Hanayama, Kazuo Nakagawa, Akiyoshi Onishi
  • Patent number: 5001181
    Abstract: There is discloses a resin composition which comprises a polyphenylene ether resin, a polyamide resin, an alkenylaromatic compound-conjugated diene copolymer; a compound having unsaturated group and polar group in combination within the same molecule; and an inorganic filler, and the polyphenylene ether resin being dispersed into the polyamide resin which forms continuous phase, and the inorganic filler being dispersed into dispersed phases of the polyphenylene ether resin.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: March 19, 1991
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Kiyoji Takagi, Koji Nishida
  • Patent number: 4989154
    Abstract: A method and apparatus for measuring resistivity employ the four-point probe method to measure the surface resistivity or volume resistivity of a sample. The method includes inputting sample shape information and calculating a resistance correction coefficient for the sample based on the shape information and information relating to a measurement position on the sample. The sample surface resistivity or volume resistivity is calculated by multiplying a resistance value, which is measured in accordance with the four-point probe method, by the correction coefficient.
    Type: Grant
    Filed: June 22, 1988
    Date of Patent: January 29, 1991
    Assignee: Mitsubishi Petrochemical Company Ltd.
    Inventors: Masato Yamashita, Hideo Enjyouji, Hiroshi Kurihara, Shoji Yamaguchi, Hideto Shimizu, Nichio Hashizume, Yasusuke Mori