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Mitsubishi Gas Chemical Company, Inc. Patents
Assignee:
Mitsubishi Gas Chemical Company, Inc.
Address:
Tokyo, JP
No. of patents:
1113
Patents:












Patent Number Title Of Patent Date Issued
6720651 Semiconductor plastic package and process for the production thereof April 13, 2004
A semiconductor plastic package excellent in heat diffusibility and free of moisture absorption, is structured by fixing a semiconductor chip on one surface of a printed circuit board, connecting a semiconductor circuit conductor to a signal propagation circuit conductor formed on a prin
6710009 Catalysts for producing methylamines and method for manufacturing the same March 23, 2004
Catalysts useful for producing methylamines and having practical catalyst life and large selectivity for dimethylamine comprise crystalline silicoaluminophosphate molecular sieves which have a molar ratio of silicon atom to aluminum atom in the range of 0.01-0.30.
6708404 Method of producing high-density copper clad multi-layered printed wiring board having highly re March 23, 2004
A method of making a high-density copper-clad multi-layered printed wiring board having a reliable through hole including providing a stacked assembly including three copper foil layers and at least two resin layers; providing an auxiliary material on a top surface of the stacked assembl
6703245 Oxygen detecting composition March 9, 2004
The oxygen detecting composition of the present invention includes a layered silicate, a cationic surfactant, an organic colorant, a reducing agent, and optionally a basic substance. The oxygen detecting composition is suitable for indicating the presence or absence of oxygen or the degr
6699532 Optically active compound and liquid crystal composition containing the compound March 2, 2004
An optically active compound of the general formula (1) useful as a chiral dopant, and use thereof for a liquid crystal composition, ##STR1##the above optically active compound having a remarkably large helical twisting power (HTP) of as large as 50 or more and having a property that
6693163 Solid-phase drying and solid-phase polymerization of polyamide February 17, 2004
In the method for solid-phase drying or solid-phase polymerizing a polyamide of the present invention, the polyamide that is stored for 20 days or longer after the production thereof until subjected to the solid-phase drying or the solid-phase polymerization under the specific condit
6689920 Bifunctional biphenyl and process for producing bifunctional phenylene ether oligomer compound u February 10, 2004
A process for producing 2,2',3,3',5,5'-hexamethyl-[1,1'-biphenyl]-4,4'-diol, which process comprises, while setting a pH of a reaction liquid containing an alkaline aqueous solution, a surfactant, a copper catalyst and 2,3,6-trimethylphenol during a reaction in the range of from 8
6689336 Carbon foam, graphite foam and production processes of these February 10, 2004
A carbon foam obtained by heat-treating a mesophase pitch whose softening point is 300.degree. C. or less according to an elevated flow tester, whose ratio (Daromatic/Daliphatic) of the absorption intensity of an aromatic C--H stretching vibration, measured with FT-IR, to the absorption
6686322 Cleaning agent and cleaning process using the same February 3, 2004
A cleaning agent which comprises 0.1 to 60% by weight of an oxidizing agent and 0.0001 to 5% by weight of a chelating agent. In the process for producing semiconductor integrated circuits, a pattern layer of a photoresist used as an etching mask and residues formed from the photoresi
6680152 Photosensitive resin composition January 20, 2004
A photosensitive resin composition (C) containing a photosensitive resin (B) which is a reaction product produced by modifying an epoxy acrylate (a) with a cyanate ester compound (b) to obtain a modification product (A) and reacting the modification product (A) with a polybasic acid anhy
6676901 Oxygen indicator package equipped with oxygen indicator and method for manufacturing the same January 13, 2004
The present invention provides an oxygen indicator comprising: an oxygen indicating agent including a substrate and an oxygen indicator composition fixed at the surface of the substrate; and a single-sided self-adhesive plastic member having a self-adhesive layer on one side thereof, whe
6657037 Process for production of polyamide December 2, 2003
In the process for producing polyamide of the present invention, a diamine and a dicarboxylic acid are melt-polycondensed in a batch-wise fist polymerizer in the absence of a solvent to produce a middle-stage polyamide. The diamine has a boiling point higher than a melting point of t
6653207 Process for the production of electric part November 25, 2003
A process for the production of an electric part, comprising performing a circuit-parts-forming step including the introduction of impurities on one surface (surface A) of a semiconductor substrate, then bonding the surface A to a holding substrate, performing a back surface treatment st
6646163 Method for producing high purity xylylenediamine November 11, 2003
In a method for producing xylylenediamine by hydrogenating phthalonitrile separated from a gas produced by causing xylene to react with ammonia and oxygen-containing gas in the presence of a catalyst, (1) the gas is brought into contact with an organic solvent to trap phthalonitrile; (2)
6642412 Process for producing a high purity aromatic polycarboxylic acid November 4, 2003
A process for producing a high purity aromatic polycarboxylic acid by purifying a crude aromatic polycarboxylic acid in accordance with the steps of (I) forming an amine salt of an aromatic polycarboxylic acid from the crude polycarboxylic acid and an amine, (II) continuously decomposing
6638694 Resist stripping agent and process of producing semiconductor devices using the same October 28, 2003
A resist stripping agent comprising a specific alkanolamine having at least one functional group represented by the following formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are each hydrogen atom, C.sub.1 -C.sub.8 alkyl or C.sub.1 -C.sub.8 alkenyl. The resist stripping agent easily
6636660 Monochrometer and wavelength division multiplexer comprising said monochrometer October 21, 2003
A small-sized and low-cost wavelength division multiplexer having little insertion loss, little polarization dependence and a broad wavelength bandwidth, the wavelength division multiplexer adopting a grating configuration in which an incident light is retroreflected, exit lights from
6632331 Distillation of polycyclic diol October 14, 2003
Aldehyde compounds contained in polycyclic diols as impurities are effectively removed by distilling the polycyclic diols in the presence of an alkali metal compound and/or a alkaline earth compound. The distilled polycyclic diols are useful as a diol component of a polymer such as p
6630562 Polycarbonate resin October 7, 2003
A polycarbonate resin obtained by reaction of (A) a bisphenol compound having a fluorene structure and (B) a compound having a polysiloxane structure with hydroxyphenyl group or (A) a bisphenol compound having a fluorene structure, (B) a compound having a polysiloxane structure with
6620966 Process for producing aromatic carboxylic acid September 16, 2003
There is disclosed a process for continuously producing an aromatic carboxylic acid comprising the steps of (A) subjecting a poly-alkyl aromatic hydrocarbon to a liquid-phase oxidation by continuously supplying an oxidation reactor with said hydrocarbon, a catalyst, a reaction accele
6620509 Transparent resin laminate and molded article used the same September 16, 2003
A transparent resin laminate comprising a polycarbonate resin base material, an acrylic resin layer comprising an ultraviolet absorbent coated on at least one surface of said polycarbonate resin base material and a cured layer formed by coating a composition comprising polyorganosilo
6617416 Polyoxymethylene copolymer and molded article thereof September 9, 2003
A polyoxymethylene copolymer which is a polyoxymethylene copolymer obtained by copolymerizing trioxane and 8 to 20 mol, per 100 mol of the trioxane, of 1,3-dioxolane and which (i) has a crystallization time period of 10 to 2,000 seconds at 143.degree. C., (ii) withstands 30 to 1,000 cycl
6612259 Oxygen generating materials, carbon dioxide absorbing materials, and transport system and transp September 2, 2003
The present invention provides an effective oxygen generating materials, carbon dioxide absorbing materials, and transport system and transport method of live fishery products for use upon transporting live fishery products. An oxygen generating materials of the present invention is
6610816 Process for production of polyamide August 26, 2003
In the production of polyamide by the melt-polymerization of the present invention, the polymerization conditions are rapidly and accurately controlled by a near-infrared spectroscopy to enable the efficient production of a desired polyamide with a good stability in its quality.
6602654 Developing solution for a photoresist and a method for developing the photoresist August 5, 2003
Developing solution for a photoresist comprising an alicyclic amine compound and a non-metallic alkali compound is described. The developing solution exhibits excellent wettability and dissolution selectivity to alicyclic compound-based resists. Also, the developing solution does not
6596396 Thin-film-like particles having skeleton constructed by carbons and isolated films July 22, 2003
Thin-film-like particles and isolated films of an extremely small thickness having a skeleton constructed by carbons are provided. The thin-film-like particles take independent shapes, have a thickness of 0.4 to 10 nm and a breadth in a planar direction of 20 nm or more, and can disperse
6596192 Oxygen absorbent composition absorbing water vapor July 22, 2003
An oxygen absorbent composition absorbing water vapor mixed a liquid mixed (A) an aliphatic compound(s) with an unsaturated group(s) and (B) a transition metal salt(s) with (C) at least one solid selected from the group consisting of calcium oxide, calcium chloride and magnesium chlo
6596191 Oxygen absorbing composition, oxygen absorbing resin composition using the oxygen absorbing comp July 22, 2003
Provided is an oxygen absorbing composition and an oxygen absorbing resin composition employing such oxygen absorbing composition, which demonstrate a favorable oxygen absorbing performance even in a low-humidity environment. Use of such oxygen absorbing composition and oxygen absorbing
6590124 Catalysts for producing methylamines and method for manufacturing the same July 8, 2003
Catalysts useful for producing methylamines and having practical catalyst life and large selectivity for dimethylamine comprise crystalline silicoaluminophosphate molecular sieves which have a molar ratio of silicon atom to aluminum atom in the range of 0.01-0.30.
6589492 Process for recovering catalyst components from a mother liquor of liquid phase oxidation July 8, 2003
A process for recovering components of a catalyst from a mother liquor of liquid phase oxidation in production of aromatic carboxylic acids by liquid phase oxidation of aromatic hydrocarbons having substituents with a gas containing oxygen in a presence of a catalyst comprising cobalt,
6586567 Production process of polyphenylene ether July 1, 2003
A process for producing a polyphenylene ether, which comprises contacting, with an aqueous solution of a chelating agent, a polyphenylene ether solution and adding a water-soluble poor solvent for the polyphenylene ether to precipitate the polyphenylene ether; and recovering the thus
6585807 Recovery method of ammonia from gaseous mixture July 1, 2003
An object of the present invention is to carry out separation recovery of ammonia efficiently from a gaseous mixture containing ammonia and carbon dioxide, without generating a solid ammonium carbamate. A recovery method of ammonia from a gaseous mixture, includes a process (I) in which
6579990 Process for producing refined pyromellitic acid and refined pyromellitic anhydride June 17, 2003
A process for refined pyromellitic anhydride which comprises dissolving crude pyromellitic acid or crude pyromellitic anhydride in water, then cooling an aqueous solution thus obtained to perform crystallization as pyromellitic acid, then separating a crystal thus obtained from water,
6576735 Polycarbonate resin June 10, 2003
A polycarbonate resin obtainable by reaction of a carbonic acid ester-forming compound with bisphenols consisting essentially of 9,9-bis(4-hydroxy-3-methylphenyl) fluorene and a bisphenol compound(s) having a polysiloxane skeleton, an intrinsic viscosity of said polycarbonate resin b
6570042 Production of adamantanediols May 27, 2003
Adamantanediols are produced by the hydroxylation of adamantane compounds in a water/organic solvent two-phase system in the presence of a ruthenium compound and a hypochlorite. Throughout the hydroxylation, the hypochlorite concentration in the water phase is regulated within a narrow
6562934 Amino compound and process for producing the same May 13, 2003
An amino compound obtained by addition reaction of diamine represented by the following formula (1) and an alkenyl compound and a process for producing the same.wherein A is a phenylene group or a cyclohexylene group.
6562179 High relative-permittivity B-staged sheet, high relative-permittivity prepreg, its production pr May 13, 2003
A high relative-permittivity B-staged sheet obtained by incorporating an insulating inorganic filler having a relative permittivity of at least 500 at room temperature into a solvent-less resin component so as to have an insultaing inorganic filler content of 80 to 99% by weight, a high
6548034 Process for reducing concentration of carbon monoxide in hydrogen-containing gas April 15, 2003
In the present invention, carbon monoxide in the hydrogen-containing gas is contacted with oxygen in the presence of a catalyst comprising platinum and at least one metal selected from the group consisting of cobalt, nickel, copper and manganese.
6544459 Method of injection molding multi-layered articles April 8, 2003
An injection molding apparatus for injection molding a multi-layered article, which comprises; (a) a mold having a cavity block provided with a cavity and a hot runner block, (b) at least a first injection cylinder and a second injection cylinder, (c) a first resin-flow-passage for conne
6541662 Process for producing a hydrogenation product of an aromatic carboxylic acid April 1, 2003
A process for producing a hydrogenation product of aromatic carboxylic acid which comprises continuously producing the hydrogenation product of aromatic carboxylic acid by hydrogenating an aromatic carboxylic acid having a melting point of 250.degree. C. or higher in a solvent in the
6541632 Process for producing heterocyclic nitriles April 1, 2003
A carbocyclic or heterocyclic compound, ammonia and an oxygen-containing gas are subjected to fluid catalytic reaction in vapor phase in the presence of a catalyst containing alkali metal to produce an aromatic or heterocyclic nitrile. The use of the catalyst containing a specific amount
6534589 Process for producing a resin having a large refractive index March 18, 2003
A process for producing a resin having a large refractive index which comprises curing an episulfide compound having one or more epithio structures represented by formula (1) in one molecule by polymerization in the presence of a polymerization catalyst and 0.001 to 3.0 parts by weight
6531532 Composition for optical materials March 11, 2003
Optical materials which are cured compositions of a mixture of (a) a compound comprising sulfur and (b) an inorganic compound comprising at least one atom selected from the group consisting of sulfur atom and selenium atom, the optical material being obtained by curing the compositio
6528552 Resist composition excellent in flame resistance March 4, 2003
A resist composition for permanent protective coating of a printed wiring board, which resist composition is excellent in flame resistance and is obtained by incorporating as essential components a flame retardant containing 100 to 140 parts by weight of (a) aluminum hydroxide, 0.1 to 15
6524769 Photosensitive resin February 25, 2003
A photosensitive resin obtained by reacting a reaction product (I) prepared from a biphenyl epoxy acrylate (a) of the formula (1) and a cyanate ester compound (b) with a polybasic acid anhydride (c), and a photosensitive resin and an epoxy compound, ##STR1## wherein each of R.sup.
6521781 Production of 2-hydrocarbyl-2-adamantyl acrylate compounds February 18, 2003
A 2-hydrocarbyl-2-adamantyl acrylate compound represented by the following Formula 6: ##STR1##is produced easily and stably with high yields by reacting a 2-adamantanone compound represented by the following Formula 1: ##STR2##with at least one organometallic compound represented by
6521735 Production process of polyphenylene ether February 18, 2003
A process for producing a polyphenylene ether by oxidative polymerization of a phenol compound using a catalyst and an oxygen-containing gas, wherein said catalyst comprises a copper compound, a bromine compound, a diamine compound of formula (1) as recited in the specification, a te
6515099 Shaped article of polyamide resin and production thereof February 4, 2003
The polyamide resin shaped article of the present invention is produced by preliminarily melt-kneading a m-xylylene-containing polyamide resin and a layered silicate subjected to a swelling treatment to prepare a resin composition containing the layered silicate in high concentration,
6514352 Cleaning method using an oxidizing agent, chelating agent and fluorine compound February 4, 2003
The cleaning method described above is characterized by allowing a cleaning agent comprising an oxidizing agent, a chelating agent and fluorine compound to flow on a surface of a material to be treated at a high speed to thereby clean the above surface according to the present invention,
6504069 Process for producing dimethyltetralin January 7, 2003
5-Tolyl-pent-2-ene is cyclized in liquid phase in the present of an aliphatic hydrocarbon to produce the corresponding dimethyltetralin. The use of the aliphatic hydrocarbon effectively prevents a side reaction such as dimerization of 5-tolyl-pent-2-ene to provide dimethyltetralin in a

 
 
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