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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
6503587 Oxygen-absorbing multi-layer laminate, production method thereof and packaging container January 7, 2003
An oxygen-absorbing multi-layer laminate suitable for preserving food, etc. due to its excellent ability of retaining flavor and taste of food, a method of efficiently producing the oxygen-absorbing multi-layer laminate and a packaging container made of the oxygen-absorbing multi-layer
6500347 Process for recovering crystals from a slurry December 31, 2002
A process for recovering crystals from a slurry which comprises supplying a slurry comprising crystals and a solvent to a rotary vacuum filter and successively conducting filtration under suction, washing, filtration under suction and cleavage of a cake continuously by rotation of a
6500270 Resist film removing composition and method for manufacturing thin film circuit element using th December 31, 2002
A resist film removing composition used in the manufacture of a thin film circuit element having an organic insulation film which comprises 50 to 70% by weight of an alkanolamine having 3 or more carbon atoms, 20 to 30% by weight of a water-miscible solvent and 10 to 20% by weight of wat
6495724 Catalysts for producing methylamines and method for manufacturing the same December 17, 2002
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.
6495096 Deodorant and process for deodorization using said deodorant December 17, 2002
A deodorant, for substances containing hydrogen sulfide or mercaptans, which includes a combination of a peroxide and a nitrate ion, a combination of a peroxide, a nitrate ion and a metal salt, or a combination of a chelating agent and one of the above combinations, and a process for
6491807 Process for producing sodium persulfate December 10, 2002
An electrolytic production of sodium persulfate in a decreased number of steps with low unit power cost is described. Sodium persulfate is caused to crystallize by the reaction between an anode product and sodium hydroxide. The resulting sodium persulfate slurry is separated into a m
6489439 Production process of polyphenylene ether December 3, 2002
A process for producing a polyphenylene ether by oxidative polymerization of a phenol compound using a catalyst and an oxygen-containing gas, wherein the catalyst comprises a copper compound, a bromine compound, a diamine compound represented by the following formula (1): ##STR1##(wh
6489435 Process for producing polyamide December 3, 2002
The improved polyamide production method of the present invention is characterized by including a step of accurately regulating the molar balance between a diamine component and a dicarboxylic acid component to a desired balance in a batch-wise regulation tank, thereby preparing a sl
6488720 Anode material for non-aqueous lithium secondary batteries, a method for the production thereof, December 3, 2002
A carbonaceous material for use as an anode material in secondary batteries using non-aqueous solvent comprises a material obtained by calcining a solid, the solid, in turn, being obtained by heating tar and/or pitch with furfural in the presence of an acid catalyst, the use of the resul
6479760 Printed wiring board for semiconductor plastic package November 12, 2002
Provided is a printed wiring board for a chip size scale package, which overcomes the poor adhesion of solder balls to a base material which poor adhesion is caused by a recent decrease in the size of the solder balls, and in the chip size scale package, the distortion of the printed wir
6475373 Method of controlling NOx gas emission by hydrogen peroxide November 5, 2002
Emission of NOx during acid-piclding treatment of metals in an aqueous solution containing at least nitric acid is controlled by the addition of hydrogen peroxide. The addition amount of hydrogen peroxide is minimized to avoid excessive addition by monitoring the potentiostatic electroly
6472575 Process for producing adamantane October 29, 2002
A process for producing adamantane (tricyclodecane[3.3.1.1.sup.3,7 ]) by isomerization reaction of tetrahydrodicyclopentadiene (tricyclodecane[5.2.1.0.sup.2,6 ]) with a HF.BF.sub.3 catalyst, wherein the reaction is carried out in the presence of at least one metal selected from the g
6472540 Process for producing .epsilon.-caprolactone October 29, 2002
What is disclosed is a process for producing .epsilon.-caprolactone which comprises removing impurities by distillation from a reaction mixture obtained by co-oxidation of cyclohexanone and aldehyde, wherein .epsilon.-caprolactone separated from a purifying column is contacted with o
6472495 Composition for producing resin October 29, 2002
A composition comprising (a) 30 to 95% by weight of a compound having, in one molecule, one or more structures represented by the following formula (1): ##STR1##wherein R.sup.1 is a single bond or a divalent hydrocarbon group having 1 to 10 carbon atoms, R.sup.2, R.sup.3 and R.sup.4
6462005 Cleaning agent for a semiconductor device and a method of manufacturing a semiconductor device October 8, 2002
A cleaning agent for use in the manufacture of a semiconductor device comprising an aqueous solution containing a quarternary ammonium salt and a fluoro compound, or an aqueous solution containing a quarternary ammonium salt and a fluoro compound, as well as an organic solvent select
6458994 Process for producing aromatic polycarboxylic acid October 1, 2002
A process for producing a polycarboxylic acid which comprises performing liquid phase oxidation of polyalkyl-substituted aromatic aldehyde and/or oxide derivative of polyalkyl-substituted aromatic aldehyde as raw material for oxidation with molecular oxygen at two stages in water sol
6458517 Photoresist stripping composition and process for stripping photoresist October 1, 2002
A photoresist stripping composition comprises (1) a nitrogen-containing organohydroxyl compound, (2) an alkylene glycol monoalkyl ether represented by the general formula: HO--(C.sub.p H.sub.2p O).sub.q --R, wherein R is C.sub.1 -C.sub.4 alkyl, p is 2 or 3, and q is 1, 2 or 3, (3) su
6455731 Process for producing a high purity aromatic polycarboxylic acid September 24, 2002
A process for producing a high purity aromatic polycarboxylic acid by purify 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 th
6452047 Process for producing highly pure aromatic polycarboxylic acid September 17, 2002
Highly pure, less colored aromatic polycarboxylic acids are produced from crude aromatic polycarboxylic acids by simple procedures at low production costs. The crude aromatic polycarboxylic acid is mixed with aliphatic amine or alicyclic amine in the presence of a solvent to precipitate
6447859 Polyester resin and molded article September 10, 2002
The polyester resin of the present invention is produced by polymerizing a monomer mixture comprising a glycol component containing 5 to 60 mol % of a spiroglycol represented by Formula I: ##STR1##and 30 to 95 mol % of ethylene glycol, and a dicarboxylic acid component containing 80
6440326 Photoresist removing composition August 27, 2002
A resist removing composition comprising a quaternary ammonium hydroxide, a water-soluble amine, an alkylpyrrolidone and a sugar or sugar alcohol. The photoresist removing composition can easily remove (i) a photoresist layer applied onto an inorganic substrate, (ii) a remaining photores
6432266 Process for bleaching chemical pulp simultaneously with chlorine dioxide, peroxide and a reactio August 13, 2002
A process for bleaching chemical pulp for paper manufacturing comprising delignifying and bleaching chemical pulp which has been treated by cooking by simultaneous use of chlorine dioxide, a peroxide, and at least one reaction catalyst selected from the group consisting of oxoacids of
6429330 Process for producing carbocyclic nitriles August 6, 2002
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
6411641 Faraday rotator for use with high energy lasers June 25, 2002
A high-energy laser Faraday rotator is used in an optical system in which the Faraday rotator absorbs laser light energy of more than 20 mW. The Faraday rotator includes a bismuth-substituted rare-earth iron garnet single crystal film grown as a Faraday rotator by using a liquid phase
6410753 Process for producing trimellitic anhydride June 25, 2002
A process for producing trimellitic anhydride which comprises performing liquid phase oxidation of pseudocumene containing 5% by weight or above of dimethyl bezaldehyde as a raw material for oxidation with air in aliphatic monocarboxylic acid having 1 to 5 carbon atoms as a solvent in th
6396143 Ball grid array type printed wiring board having exellent heat diffusibility and printed wiring May 28, 2002
A printed wiring board for a ball grid array type semiconductor plastic package which has excellent heat diffusibility and causes no popcorn phenomenon, and a metal-plate-inserted printed wiring board having wire bonding pads formed at two levels, for use in the ball grid array type
6395452 Photosensitive resin and photosensitive resin composition May 28, 2002
Disclosed is a photosensitive resin which can give a photosensitive resin composition having excellent heat durability and excellent developability and showing excellent heat durability and excellent electric insulation reliability in a humidified state. The photosensitive resin composit
6391407 Oxygen absorbing multi-layer film and oxygen absorbing packaging container May 21, 2002
An oxygen absorbing multi-layer film which comprises a first outer surface comprising an uncolored oxygen permeating layer 11 comprising an oxygen permeating polyolefin which does not contain a pigment; a colored concealing, oxygen permeating layer 12 disposed under the uncolored oxygen
6384185 Process for purifying polycarbonate resin solution May 7, 2002
A process for purifying a polycarbonate resin solution which comprises passing a water-in-oil dispersion type (W/O) emulsion composed of a mixture of an organic solvent solution containing a polycarbonate resin with a aqueous solution and having water particles with an average diamet
6376908 Semiconductor plastic package and process for the production thereof April 23, 2002
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
6376641 Aromatic-aliphatic copolycarbonate and process for producing the same April 23, 2002
An aromatic-aliphatic copolycarbonate and a process for producing the same which comprises polycondensation of an aromatic dihydroxy compound, such as 1,1-bis(4-hydroxyphenyl)cyclohexane, tricyclo(5.2.1.0.sup.2,6)decanedimethanol, and a carbonic acid diester in a molten state under h
6376066 Transparent antistatic layer-coated substrate and optical article April 23, 2002
A transparent antistatic layer-coated substrate comprising a transparent substrate and an antistatic layer which comprises 20 to 70% by weight of conductive zinc antimonate and is disposed on at least one face of the transparent substrate, and an optical article comprising the transparen
6372410 Resist stripping composition April 16, 2002
A resist stripping composition contains 0.001 to 0.5% by weight of a fluorine compound, 50 to 99% by weight of an ether solvent and the balance being substantially water. With such a specific content range of the ether solvent, the resist stripping composition shows reduced corrosive
6372308 Liquid crystal composition April 16, 2002
A liquid crystal composition includes (1) an anti-ferroelectric liquid crystal compound of formula (1) ##STR1##and (2) a ferrielectric liquid crystal compound or racemic compound thereof. The composition ratio of (1) to (2) is in the range extending from a value which extends from wi
6365223 Process for tinting a resin for optical materials April 2, 2002
A process for tinting a resin for optical materials, the resin containing sulfur, includes dipping the resin for optical materials into a liquid containing an inorganic acid and/or an organic acid and thereafter tinting the resin. Where the organic acid is included in the liquid, the org
6362436 Printed wiring board for semiconductor plastic package March 26, 2002
Printed wiring board for a chip size scale package, which overcomes the poor adhesion of solder balls to a base material which poor adhesion is caused by a recent decrease in the size of the solder balls, and in the chip size scale package. The distortion of the printed wiring board is
6361866 Prepreg and laminated board March 26, 2002
Provided are a halogen-free and phosphorus-free prepreg having good flame retardancy and having excellent electric characteristics and heat resistance, and a laminated board. The prepreg is formed of a resin composition comprising, as essential components, a phenol compound (I) havin
6359163 Process for producing dialkyl carbonate March 19, 2002
A process for producing a dialkyl carbonate which comprises performing reaction of allophanate represented by the following general formula (1) and an alkyl alcohol represented by the following general formula (2) as raw materials, thereby producing a dialkyl carbonate represented by the
6359103 Aromatic-aliphatic copolycarbonate and process for producing the same March 19, 2002
An aromatic-aliphatic copolycarbonate and a process for producing the same which comprises polycondensation of an aromatic dihydroxy compound, such as 1,1-bis(4-hydroxyphenyl)cyclohexane, tricyclo(5.2.1.0.sup.2,6)decanedimethanol, and a carbonic acid diester in a molten state under h
6355768 Polycarbonate resin and process for producing the same March 12, 2002
Provided is a polycarbonate resin consisting essentially of structural units of the structure formula (1) and the structure formula (2), wherein a molar ratio of the structure formula (1)/the structure formula (2) is 70/30 to 5/95. ##STR1##
6350952 Semiconductor package including heat diffusion portion February 26, 2002
Disclosed is a semiconductor plastic package having a structure in which a metal sheet having a size nearly equivalent to a printed wiring board is disposed nearly in the central portion in the thickness direction of the printed wiring board. The metal sheet and a signal propagation cond
6348559 Polycarbonate resin and process for producing the same February 19, 2002
A polycarbonate resin obtainable by reaction of pentacyclopentadecane dimethanol, at least one compound selected from the group consisting of tricyclo (5.2.1.0.sup.2,6) decane dimethanol, cyclohexane-1,4-dimethanol, decalin-2,6-dimethanol and norbornane dimethanol and carbonic acid d
6344592 Method of producing highly pure trimethylolpropane February 5, 2002
A method of producing a highly pure trimethylolpropane from a crude trimethylolpropane obtained by a reaction of n-butyl aldehyde and formaldehyde in the presence of a basic catalyst in a two-stage process of an aldol condensation and a crossed Cannizzaro reaction. Since a high-boili
6344249 Multi-layered article February 5, 2002
A multi-layered article having a first portion constituted of laminated three resin layers and a second portion extending from the first portion, the first portion being constituted mainly of consecutively laminated resin layers composed of a first resin layer formed of a first resin, a
6340737 Polycarbonate resin and optical article used the same January 22, 2002
A polycarbonate resin obtained by reaction of (A) a bisphenol compound having a fluorene structure, (B) a bisphenol compound having a polysiloxane structure, (C) other specific bisphenol compound and a carbonic acid ester-forming compound, wherein an amount of (A) bisphenol compound
6337463 Method of making through hole with laser, copper-clad laminate suitable for making hole, and aux January 8, 2002
A method of making a small-diameter through hole having high reliability with regard to a hole wall at a high rate with the energy of a high-output carbon dioxide gas laser without pre-making any hole in a copper foil, forming or disposing a coating or a sheet of an organic substance
6333438 Process for producing adamantanols December 25, 2001
A process for efficiently separating and recovering a ruthenium compound used as the catalyst in the production of adamantanols. The adamantanols are produced by hydroxylating an adamantane compound in the presence of a ruthenium compound and a salt of hypochlorous acid in a water/organi
6323169 Resist stripping composition and process for stripping resist November 27, 2001
An aqueous resist stripping composition contains (a) an oxidizing agent, (b) a chelating agent, (c) a water-soluble fluorine compound, and optionally (d) an organic solvent. Also provided is a process of stripping resist films and resist residues remaining after etching treatment uti
6319575 Polyester resin composition November 20, 2001
A polyester resin composition is produced by melt-kneading a mixture comprising a polyamide resin and a polyester resin, and a tricarboxylic acid compound. The polyamide resin is a polymerization product of a diamine component containing 70 mol % or more of m-xylylenediamine and a di
6316576 Polycarbonate resin and process for producing the same November 13, 2001
A polycarbonate resin obtainable by reaction of pentacyclopentadecanedimethanol with carbonic acid diester and a polycarbonate resin obtainable by reaction of pentacyclopentadecanedimethanol, an aromatic dihydroxy compound and carbonic acid diester having a low photoelastic constant

 
 
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