Patents Assigned to Mitsubishi Kasei Corporation
-
Patent number: 5286842Abstract: A process for producing a biodegradable polymer, which comprises subjecting a cyclic compound of the following formula (1) or (2) to ring opening polymerization: ##STR1## wherein R.sub.1 is a C.sub.1-10 alkyl group, ##STR2## wherein R.sub.2 is a C.sub.1-10 alkyl group, and R.sub.3 is a hydrogen atom or a C.sub.1-10 alkyl group.Type: GrantFiled: June 30, 1992Date of Patent: February 15, 1994Assignee: Mitsubishi Kasei CorporationInventor: Yoshiharu Kimura
-
Patent number: 5286540Abstract: A blow molded container made of a polypropylene resin obtained by injection stretch blow molding of a polypropylene resin in which the polypropylene resin is a propylene polymer composition containing from 0.0001 to 10% by weight of 3-methylbutene-1 polymer, as well as medical instruments comprising the blow molded container made of the polypropylene resin.Type: GrantFiled: March 19, 1993Date of Patent: February 15, 1994Assignee: Mitsubishi Kasei CorporationInventors: Yoshinori Suga, Eiji Tanaka, Tsunemi Yoshioka, Masaaki Uchida, Hidehito Kato, Masayuki Arai
-
Patent number: 5286906Abstract: A process for the preparation of a 3-aminomethyl-3,5,5-trialkylcyclohexylamine, which comprises hydrogenating 3-cyano-3,5,5-trialkylcyclohexylamine in the presence of ammonia and a ruthenium-cobalt catalyst.Type: GrantFiled: September 25, 1992Date of Patent: February 15, 1994Assignee: Mitsubishi Kasei CorporationInventors: Yoshinori Hara, Haruhiko Kusaka, Masamichi Onuki, Sugio Nishimura
-
Patent number: 5284728Abstract: An electrophotographic photoreceptor comprising an electrically conductive support and a photosensitive layer formed thereon, wherein said photosensitive layer contains at least one member selected from the group consisting of hydrazone compounds of the formulas (I), (II) and (III): ##STR1## wherein X is a hydrogen atom or a group of the formula (IV):--C(R.sup.8).dbd.N--Q.sup.2 (IV)Q.sup.1 is a group of the formula (V), (VI), (VII), (VIII) or (IX); Q.sup.2 is a group of the formula (VI), (VII), (VIII), (IX) or (X); each of Q.sup.3 and Q.sup.Type: GrantFiled: April 30, 1992Date of Patent: February 8, 1994Assignee: Mitsubishi Kasei CorporationInventors: Tetsuo Murayama, Hitoshi Ono, Atsuo Saita, Sumiko Watabe
-
Patent number: 5284798Abstract: On the surface of n-type layer of Ga.sub.1-x Al.sub.x As (0.ltoreq..times..ltoreq.1) having n-type layer, Au layer is formed as a first layer, and alloying treatment is performed after Ge layer, Ni layer and Au layer are sequentially formed. The first Au layer, the second Ge layer, the third Ni layer and the fourth Au layer have the following thickness:______________________________________ 1st layer Au 10-100 .ANG. 2nd layer Ge 50-200 .ANG. 3rd layer Ni 50-200 .ANG. 4th layer Au 200-1000 .ANG. ______________________________________Thus, it is possible to form an ohmic electrode, which has low contact resistance and does not develop ball-up phenomenon.Type: GrantFiled: October 26, 1992Date of Patent: February 8, 1994Assignees: Mitsubishi Kasei Polytec Co., Mitsubishi Kasei CorporationInventors: Toshihiko Ibuka, Masahiro Noguchi
-
Patent number: 5283377Abstract: A method for producing octadienols, which comprises reacting 1,3-butadiene with water in the presence of a palladium compound, a phosphine compound and carbon dioxide, wherein a compound of the formula (I): ##STR1## wherein each of R.sup.1, R.sup.5 and R.sup.9 which may be the same or different, is a hydrocarbon group, and each of R.sup.2, R.sup.3, R.sup.4, R.sup.6, R.sup.7, R.sup.8, R.sup.10, R.sup.11 and R.sup.12 which may be the same or different, is hydrogen or a substituent, provided that at least one of them is an electron donative substituent, is used as the phosphine compound.Type: GrantFiled: October 1, 1992Date of Patent: February 1, 1994Assignee: Mitsubishi Kasei CorporationInventors: Keiichi Sato, Iwao Nakajima, Yoko Misu
-
Patent number: 5281340Abstract: Disclosed herein is a flocculating agent comprising a specified cationic polymer having an amidine structure. The cationic polymer flocculating agents according to the present invention have 20 to 90% by mole of a repeating amidine unit represented by the formula (1) and/or (2): ##STR1## The agents have a reduced viscosity of 0.1 to 10 dl/g as measured in a 1N saline solution of 0.1 g/dl at 25.degree. C.The agents have a remarkably excellent performance as flocculating agents, in particular for organic sludge.Type: GrantFiled: August 19, 1992Date of Patent: January 25, 1994Assignee: Mitsubishi Kasei CorporationInventors: Shin-ichi Sato, Toshiaki Sakakihara, Shigeru Sawayama
-
Patent number: 5281745Abstract: A process for producing a nitrile, which comprises subjecting an alkane and ammonia in the gaseous state to catalytic oxidation in the presence of a catalyst which satisfies the following conditions of (1) and (2):(1) the catalyst is represented by the empirical formula:Mo.sub.a V.sub.b Te.sub.c X.sub.x O.sub.n (1)wherein X is at least one element selected from the group consisting of Nb, Ta, W, Ti, Al, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ni, Pd, Pt, Sb, Bi, B and Ce,______________________________________ when a = 1, b = 0.01 to 1.0, c = 0.01 to 1.0, x = 0.01 to 1.0, ______________________________________and n is a number such that the total valency of the metal elements is satisfied; and(2) the catalyst has X-ray diffraction peaks at the following angles of 2.theta. in its X-ray diffraction pattern: ______________________________________ Diffraction angles of 2.theta. (.degree.) ______________________________________ 22.1 .+-. 0.3 28.2 .+-. 0.3 36.2 .+-. 0.3 45.2 .+-. 0.3 50.0 .+-. 0.3.Type: GrantFiled: August 7, 1992Date of Patent: January 25, 1994Assignee: Mitsubishi Kasei CorporationInventors: Takashi Ushikubo, Kazunori Oshima, Atsushi Kayo, Tiaki Umezawa, Ken-ichi Kiyono, Itaru Sawaki
-
Patent number: 5279918Abstract: A photoresist composition useful for the preparation of semiconductors and to be irradiated by light with a wavelength of from 330 to 450 nm, which comprises (1) an alkali-soluble resin, (2) a quinone-diazide type photosensitive compound and (3) a solvent, wherein(a) said quinone-diazide type photosensitive compound is composed mainly of a quinone-diazide sulfonate of a novolac resin produced by polycondensation of at least one phenolic compound of the following formula (A1) or (A2) and at least one ketone or aldehyde derivative of the following formula (B),(b) the weight-average molecular weight (the analytical value calculated as polystyrene by gel permeation chromatography) of said novolac resin is from 400 to 2,000 in the case of the novolac resin derived from the phenolic compound of the formula (A1) and from 600 to 2,200 in the case of the novolac resin derived from the phenolic compound of the formula (A2), and(c) the esterification ratio of said quinone-diazide sulfonate (the number of quinone-diazideType: GrantFiled: April 30, 1991Date of Patent: January 18, 1994Assignee: Mitsubishi Kasei CorporationInventors: Mineo Nishi, Koji Nakano, Tadashi Kusumoto, Keisuke Nakano, Yoshihiro Takada
-
Patent number: 5279922Abstract: A light-sensitive coating liquid, comprising, as an organic solvent, at least one substance represented by the formulae (I) to (III) shown below: ##STR1## wherein R.sub.1 represents an alkyl group having 1 to 4 carbon atoms, R.sub.2 to R.sub.7 each represent hydrogen atom or an alkyl group having 1 to 3 carbon atoms, with the proviso that at least one of R.sub.2 to R.sub.7 is an alkyl group. The light-sensitive coating liquid of this invention is improved in odor, low in toxicity and yet excellent in storability, and is also suitable for preparation of a light-sensitive lithographic printing plate improved in press life and dye remaining.Type: GrantFiled: March 4, 1992Date of Patent: January 18, 1994Assignees: Konica Corporation, Mitsubishi Kasei CorporationInventors: Yutaka Adachi, Kiyoshi Goto, Koji Fukazawa, Kunitaka Naito, Masaaki Tsuchiyama
-
Patent number: 5280373Abstract: A light modulating device comprising a pair of electrode substrates having supported therebetween an electrically light modulating material containing a liquid crystal and a polymer, in which said light modulating material further contains (1) a combination of a dichroic dye having a maximum absorption in the wavelength region of from 400 to 489 nm, a dichroic dye having a maximum absorption in the wavelength region of from 490 to 559 nm, and a dichroic dye having a maximum absorption in the wavelength region of from 560 to 699 nm and/or (2) a near infrared- to infrared-absorbing dichroic dye having a maximum absorption in the wavelength region of 700 nm or more. The light modulating device exhibits high performance in controlling transmission of visible to infrared light and a high contrast between "on" and "off" states.Type: GrantFiled: July 24, 1992Date of Patent: January 18, 1994Assignee: Mitsubishi Kasei CorporationInventors: Tetsuo Ozawa, Noriyuki Okabe
-
Patent number: 5276673Abstract: Disclosed herein is a read-only optical disk comprising an annulus transparent substrate of a synthetic resin having information pits thereon, a reflective layer comprising an Al alloy containing Ta and a protective layer provided thereover. The read-only optical disk according to the present invention is excellent in the corrosion resistance and has a high reliability.Type: GrantFiled: May 16, 1990Date of Patent: January 4, 1994Assignee: Mitsubishi Kasei CorporationInventors: Yoshimitsu Kobayashi, Yoshiyuki Kisaka, Takashi Hashimoto, Toshifumi Kawano, Mitsugu Wakabayashi
-
Patent number: 5273811Abstract: Disclosed herein is a stretched, laminated film comprising at least an outer layer, an intermediate layer and an inner layer,said outer layer and inner layer comprising a polypropylenes composition composed of 100 parts by weight of polypropylenes (A), 2 to 30 parts by weight of polybutene and/or polyisobutylene (B) and 0.2 to 5 parts by weight of a polyglycerin fatty acid ester (C), andsaid intermediate layer comprising polyesters (D).Type: GrantFiled: July 13, 1992Date of Patent: December 28, 1993Assignee: Mitsubishi Kasei CorporationInventors: Toshio Fujii, Toyomitsu Kondo, Kazuhiro Kato
-
Patent number: 5272264Abstract: A process for the preparation of crystalline oxytitanium phthalocyanine showing D-type crystalline form comprising contacting dichlorotitanium phthalocyanine, dibromotitanium phthalocyanine or a mixture of them with at least one organic solvent selected from the group consisting of aromatic nitro compounds, nitrogen-containing cyclic ethers, aromatic amines, alcohols containing not less than 4 carbon atoms, aldehydes, ketones, lactones, lactams, acid amides, nitriles, alkyl sulfoxides, substituted phenols and non-substituted phenols in association with water.Type: GrantFiled: August 7, 1992Date of Patent: December 21, 1993Assignee: Mitsubishi Kasei CorporationInventor: Iwao Takagishi
-
Patent number: 5270409Abstract: A process for producing an olefin polymer which comprises polymerizing an olefin or copolymerizing olefins in the presence of a catalyst comprising a novel solid catalyst component (A), an organometallic compound (B) and an electron donating compound (C) is disclosed. According to the process of the present invention, an olefin polymer excellent in stereospecificity and particle property can be obtained. The catalyst used in the process of the present invention shows a very slight lowering in polymerization activity during a long-term polymerization, and therefore, the productivity of an olefin polymer can be improved.Type: GrantFiled: January 27, 1992Date of Patent: December 14, 1993Assignee: Mitsubishi Kasei CorporationInventors: Yoshinori Suga, Yasuo Maruyama, Fumihiko Shimizu
-
Patent number: 5269910Abstract: A method for hydro-liquefying coal, the method comprising preheating a slurried mixture of a pulverized coal and a solvent, the preheated mixture being supplied to a plurality of reactors; separating a gaseous content from the products resulting from the reaction; dehydrating the gaseous content and removing a light oil content therefrom, thereby obtaining hydrogen-content gases; and recycling the hydrogen-content gases at least to the first reactor and supplying it to the bottom thereof so that the light oil content in the solvent is stripped.Type: GrantFiled: September 28, 1990Date of Patent: December 14, 1993Assignees: Kabushiki Kaisha Kobe Seiko Sho, Mitsubishi Kasei Corporation, Idemitsu Kosan Company Limited, Cosmo Oil Co., Ltd., Nippon Brown Coal Liquefaction Co., Ltd.Inventors: Tetsuo Matsumura, Kaizaburo Saito, Osamu Okuma, Hiroshi Yoshimura, Yasuo Sugino, Shun-ichi Yanai, Tatsuo Hirano, Kazuhiro Mae, Koji Murakoshi
-
Patent number: 5270303Abstract: A novel chondromodulin-II protein having a molecular weight of about 16,000 dalton on SDS-PAGE, capable of stimulating the growth of chondrocytes with or without fibroblast growth factor and promoting the differential potency of said cells, and a pharmaceutical composition containing said protein as an active ingredient.Type: GrantFiled: August 4, 1992Date of Patent: December 14, 1993Assignee: Mitsubishi Kasei CorporationInventors: Fujio Suzuki, Yuji Hiraki, Jun Kondo, Akihito Kamizono, Hideho Tanaka, Yutaka Teranishi
-
Patent number: 5268125Abstract: A calcium tungstate phosphor which comprises calcium tungstate as a host and vanadium, wherein the proportion of the vanadium to the calcium tungstate is within a range of from 0.01 to 30 ppm. The phosphor is produced by forming a solid calcium tungstate precipitate from an aqueous medium containing ammonia, calcium ion, tungstate ion and vanadate ion and firing the precipitate in the presence of fluxing material.Type: GrantFiled: September 23, 1992Date of Patent: December 7, 1993Assignees: Kasei Optonix, Ltd., Mitsubishi Kasei CorporationInventors: Hideo Suzuki, Etsuo Shimizu, Yujiro Suzuki, Kitaro Shigeta, Takashi Johnokuchi
-
Patent number: 5264221Abstract: A drug-containing protein-bonded liposome comprising a liposome containing a drug and having maleimide residues on its surface, and a protein and residues of a compound having a polyalkylene glycol moiety, bonded via respective thiol groups to the maleimide residues.Type: GrantFiled: May 22, 1992Date of Patent: November 23, 1993Assignee: Mitsubishi Kasei CorporationInventors: Toshiaki Tagawa, Saiko Hosokawa, Kazuhiro Nagaike
-
Patent number: 5264199Abstract: A process for producing carbon black by utilizing a reactor comprising a first gradually constricted reaction zone in which a mixture of a fuel and an oxygen-containing gas, is burned, a second gradually constricted reaction zone having a throat in which the resulting high temperature combustion gas is mixed and reacted with a hydrocarbon feedstock, and a third reaction zone provided with a quenching water spray for terminating the reaction, which comprises directing the high temperature combustion gas formed in the first reaction zone to form an axial stream flowing in substantially the same direction as the axial direction of the reactor, introducing the divided axial streams into the second reaction zone, and, in the second reaction zone, introducing the hydrocarbon feedstock from nozzles in a direction traversing the axial streams of the high temperature combustion gas.Type: GrantFiled: September 4, 1992Date of Patent: November 23, 1993Assignee: Mitsubishi Kasei CorporationInventors: Akinori Sakaue, Shushichi Yoshimura, Shinichi Kanamaru, Masanori Karatsu