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| Number | Title | Issue Date |
| 6583084 | Catalyst for steam reforming of methanol and method for producing hydrogen therewith The object of the present invention is to provide a new catalyst for steam reforming of methanol which can provide both sufficient catalyst activity and durability and additionally an efficient method for producing hydrogen with the catalyst, and for that... | 06/24/2003 |
| 6479123 | Dipyrromethene-metal chelate compound and optical recording medium using thereof An optical recording medium comprising at least a recording layer and a reflecting layer on a substrate wherein the recording layer contains at least one dipyrromethene-metal chelate compound represented by general formula (1): ##STR1## wherein R | 11/12/2002 |
| 6468643 | Laminated product The invention provides a laminated product of urethane-based resin. That is, the invention arranges a continuous reinforcing fiber to one direction, impregnates the arranged fiber with thermoplastic resin to form a prepreg sheet having 50% in volume ratio... | 10/22/2002 |
| 6459004 | Cleavage method of bisphenols A cleavage method of bisphenols capable of yielding a product containing high-purity isopropenylphenol and phenol is disclosed, including (1) a cleavage step of supplying the mixture containing bisphenols together with chroman derivatives and flavan deriv... | 10/01/2002 |
| 6458908 | Sulfur-containing unsaturated carboxylate compound and its cured products A sulfur-containing unsaturated carboxylate compound comprising a sulfur-containing substituent and at least two ,ଲ-unsaturated carboxylic acid residues, which are each attached to a secondary or tertiary carbon atom via an oxygen atom; a pol... | 10/01/2002 |
| 6458912 | Crystalline polyimide for melt molding with satisfactory thermal stability A thermoplastic polyimide having good thermal stability, comprising a repeating unit represented by the chemical formula (1), a molecular terminal being composed of the chemical formula (2) and/or chemical formula (3), characterized in that: a melt viscos... | 10/01/2002 |
| 6458917 | Polymerizable composition An optical resin prepared by curing a polymerizable composition comprising a (thio)epoxy compound having at least one intramolecular disulfide bond exhibits a considerably high refractive index while maintaining good optical properties and a high Abbe num... | 10/01/2002 |
| 6458990 | Nitrogen-based halogenating agents and process for preparing halogen-containing compounds Disclosed are a fluorinating agent represented by the general formula (1): ##STR1## wherein R1 to R4 are a substituted or unsubstituted, saturated or unsaturated alkyl group or a substituted or unsubstituted aryl group, and can be th... | 10/01/2002 |
| 6448367 | Method of producing poly(p-dioxanone), poly (p-dioxanone) monofilaments and method for producing the same The ring opening polymerization of p-dioxanone is started in a liquid phase under stirring at a temperature of 85 to 105° C. after adding 0.002 to 0.005 mol percent of stannous 2-ethylhexanoate forming a white crystal at a temperature of 0° C. as a cata... | 09/10/2002 |
| 6444847 | Process for preparing phosphine oxides and process for purifying the same A process for preparing phosphine oxides by reacting iminophosphoranes with phosphorus oxytrichloride by which highly purified phosphine oxides can be obtained industrially in a higher yield. Specifically, phosphine oxides are prepared in such a manner th... | 09/03/2002 |
| 6440293 | Electrode and electrolyte for use in preparation of nitrogen trifluoride gas, and preparation method of nitrogen trifluoride gas by use of them An electrode for electrolyzing an electrolyte comprising an ammonium fluoride (NH4 F)-hydrogen fluoride (HF)-containing molten salt and having a composition ratio (HF/NH4 F) of 1 to 3 to prepare a nitrogen trifluoride (NF3... | 08/27/2002 |
| 6437194 | Process for preparing an alkylcyclohexanol alkylene oxide adduct The invention is a preparation process of alkylcyclohexanol alkylene oxide adduct which contains almost no alkylphenol alkylene oxide adduct 1) in the absence of a solvent, 2) in the presence of a saturated hydrocarbon solvent, or 3) in the presence of wa... | 08/20/2002 |
| 6436674 | Method for secretory production of human growth hormone A DNA encoding 20K hGH is connected directly to a gene encoding Escherichia coli OppA protein secretion signal, or a modified form thereof, and a DNA encoding signal peptidase 1 to construct a recombinant plasmid, E. coli is transformed by the plasmid and... | 08/20/2002 |
| 6433118 | Copolymer, a manufacturing process therefor and a solution containing thereof This invention discloses a copolymer comprising structural units represented by formulas (1) to (3): ##STR1## where R1 and R3 are each hydrogen or methyl and R2 is C1 -C6 straight or branched unsubsti... | 08/13/2002 |
| 6429280 | Process for preparing polyhydroxycarboxylic acid A process for preparing a polyhydroxycarboxylic acid having a weight average molecular weight of 50,000 to 1,000,000, which comprises a crystallizing step comprising (A) a step of heating pellets of a polyhydroxycarboxylic acid having a weight average mol... | 08/06/2002 |
| 6423852 | Process for the preparation of trifluorothymidine derivatives 5-trifluoromethyl-2,4-bis(trimethylsilyloxy)pyrimidine is reacted with a 2-deoxy--D-erythro-pentofuranosyl chloride derivative reacted in the absence or presence of a small amount of solvent to give a ଲ-form of 1-(2'-deoxy-ଲ-D-erythro-p... | 07/23/2002 |
| 6419951 | Sustained releasing drug comprising copolymers and process for preparing the same A sustained releasing drug which includes an effective component and a copolymer having a weight-average molecular weight of 1,000 to 100,000 which comprises, as repeating structure units, both of a succinimide unit represented by the structural formula (... | 07/16/2002 |
| 6420034 | Binder composition and process for manufacturing board by using the binder composition The present invention provides, in the preparation of a hot press molded board from a lignocellulose or an inorganic material as a main raw material, an isocyanate-based binder composition with which a board having eternally good releasability from a hot ... | 07/16/2002 |
| 6417266 | Process for preparing aliphatic polyester A process for producing aliphatic polyester wherein a crystallized aliphatic polyester prepolymer formed from an aliphatic dihydric alcohol and an aliphatic dicarboxylic acid and having a weight-average molecular weight of 2,000 to 100,000 is caused to un... | 07/09/2002 |
| 6417294 | Films and molded articles formed from aliphatic polyester compositions containing nucleating agents An aliphatic polyester formed item having transparency and crystallinity in combination by crystallizing, in the course of or after processing, an aliphatic polyester composition comprising aliphatic polyester and one or more transparent nucleating agent ... | 07/09/2002 |
| 6407242 | Quinoline derivative and use of same Quinoline compound, zinc halogenide complex and zinc complex suited for use in an electro-luminescence (EL) element, a fluorescent material and an ultraviolet absorption material, and a preparation process for these compounds are described. These compound... | 06/18/2002 |
| 6402868 | Method for forming a continuous material A method for forming a continuous material by connecting sheet materials which are used in various fields including the processing of metal foils, the processing of metal-plastic composite film material, and the processing of thermoplastic resin films suc... | 06/11/2002 |
| 6395843 | Electrostatic image developing toner Urethane-modified polyester resin which has a total acid value not greater than 10 KOH mg/g and is obtained by kneading, in a molten state, a base polyester resin (A) having an acid value of 5 to 20 KOH mg/g and a hydroxyl value of 40 to 70 KOH mg/g, a lo... | 05/28/2002 |
| 6392090 | Process for preparing hydroxybenzoic acids A process for preparing a hydroxybenzoic acid is herein disclosed which comprises reacting a phenol with an alkali metal compound by the use of an aprotic polar organic solvent as a reaction solvent to form an alkali metal salt of the phenol, and then rea... | 05/21/2002 |
| 6391965 | Production process of ABS resin, ABS resin, and ABS-polycarbonate resin composition making use of the same A process is disclosed for the continuous production of an ABS resin. The polymerization step comprises at least two substeps, one being a first-stage substep of forming particles of the rubbery polymer and the other a second-stage substep of adjusting th... | 05/21/2002 |
| 6388012 | Thermosetting powder resin composition A thermosetting powder paint composition comprising (A) a resin composition component, (B) a hardener component and (C) a solid flow controlling component, wherein the component (A) contains a resin composition component having reactivity with the compone... | 05/14/2002 |
| 6383982 | Color developer composition, aqueous dispersion, recording sheet and color developing ink A color developer composition comprising (A) a color developer containing a polyvalent metal salt of a salicylic acid derivative, and (B) a polyester polyol having in the molecule skeleton at least one carbonate bond or ester bond, and a derivative thereo... | 05/07/2002 |
| 6384241 | Purified salt of ଲ-hydroxyethoxy acetic acid, purified 2-p-dioxanone, and manufacturing method therefor A purified salt of ଲ-hydroxyethoxy acetic acid of formula (1) having a fusion peak-top temperature detected by differential scanning calorimetry (DSC) and a purified 2-p-dioxanone of formula (2) derived from the purified salt of ଲ-hydroxyethox... | 05/07/2002 |
| 6376605 | Styrene resin and resin composition comprising the same A styrene resin is disclosed having excellent moldability and physical properties and is suited for recycling; and a thermoplastic polycarbonate composition with the styrene resin. The styrene resin contains 50 to 90 wt. % of a continuous phase component ... | 04/23/2002 |
| 6372844 | Resin composition There are here disclosed a resin composition comprising a block or a graft copolymer (A) having a polyamino acid as a hydrophilic segment (a-1), and a degradable polymer as a hydrophobic segment (a-2), and a resin (B); and a method of accelerating the hyd... | 04/16/2002 |
| 6372854 | Hydrogenated ring-opening metathesis polymer and its use and production The present invention discloses a hydrogenated ring-opening metathesis polymer comprising at least unit (A) of formula (1), unit (B) of formula (2) and unit (c) of formula (3): ##STR1## wherein a constituent molar ratio of the structural unit (A)/(B) is f... | 04/16/2002 |
| 6372880 | Copolymer and process for preparing the same A copolymer having a weight-average molecular weight of 1,000 to 100,000 which comprises, as repeating structure units, both of a succinimide unit represented by the structural formula (1) ##STR1## and a hydroxycarboxylic acid unit represented by the stru... | 04/16/2002 |
| 6369269 | Thiol and sulfur-containing O-(meth)acrylate compounds and use thereof A sulfur-containing O-(meth)acrylate compound of the following formula (1) is useful as a starting material for a resin composition used in optical applications such as a lens; ##STR1## wherein R represents hydrogen atom or methyl group; 1 represents an i... | 04/09/2002 |
| 6365707 | Polymerizable composition and process for producing optical resin comprising the same A polymerizable composition according to the present invention is characterized by that it comprises a compound (a) having at least one structure represented by the following formula (1): ##STR1## wherein R1 is a divalent hydrocarbon group havi... | 04/02/2002 |
| 6361679 | Process for producing high-purity nitrogen trifluoride gas A process for producing high-purity nitrogen trifluoride gas by molten salt electrolysis using a nickel electrode and ammonium hydrogenfluoride as an electrolyte, wherein carbon element constituting impurity gases entrained in a crude gas, among impuritie... | 03/26/2002 |
| 6359093 | Amphipathic compound having succinic acid skeleton An amphipathic compound represented by any of the following Formulas: ##STR1## (R1 is a linear or branched, saturated hydrocarbon group having 6 to 48 carbon atoms, or a linear or branched, unsaturated hydrocarbon group containing 1 to 12 unsat... | 03/19/2002 |
| 6359067 | Thermosetting powder coating composition A thermosetting powder coating composition which comprises a resin composition (A) having a sea-island type microphase separation structure constituted of a continuous phase (a sea phase) comprising an acrylic copolymer and a dispersion phase (an island p... | 03/19/2002 |
| 6355327 | Optical recording medium and dipyrromethene metal chelate compound for use therein A novel optical recording medium having at least a recording layer and a reflective layer on a substrate is herein disclosed, wherein at least one dipyrromethene metal chelate compound represented by formula (1) is contained in the recording layer: #... | 03/12/2002 |
| 6351068 | Transparent conductive laminate and electroluminescence light-emitting element using same A transparent conductive laminate in which a transparent conductive layer (an ITO film) mainly comprising indium, tin and oxygen is formed on one main surface of a transparent substrate such as a polymeric film and which is excellent in moist heat resista... | 02/26/2002 |
| 6346569 | Production process of cross-linked polysuccinimide resin A process is disclosed for producing with good productivity a cross-linked polyaspartic acid resin having biodegradability and high water absorbency. The process features inclusion of one of the following steps: (a) a polysuccinimide, which has been broug... | 02/12/2002 |
