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    • 2. 发明专利
    • PRODUCTION OF METHYL METHACRYLATE
    • JPH11199545A
    • 1999-07-27
    • JP473198
    • 1998-01-13
    • DAICEL CHEM
    • KAWABE MASATOKITAYAMA KENJI
    • B01J31/24C07B61/00C07C67/38C07C69/54
    • PROBLEM TO BE SOLVED: To economically produce the subject industrially useful compound by feeding water so that a specific Broensted acid in the reactional system is kept at a specific concentration and reacting propyne, etc., with carbon monoxide and methanol using a carbonylating catalyst containing the Broensted acid. SOLUTION: Water in an amount of 0.5-5.0 wt.% based on the total weight of a reactional mixture is preferably fed so that the concentration of (iii) a Broensted acid in the reactional system is kept at 1-30 wt.% and (A) propyne and/or an arene, (B) carbon monoxide and (C) methanol are reacted in the presence of (D) a catalyst system containing (i) a supply source of an atom or an ion of a metal belonging to group VIII of the periodic table of elements [e.g. tetrakis(triphenylphosphine)platinum], (ii) a ligand selected from an organophosphorus compound, an organoarsenic compound and an organoantimony compound (e.g. triphenylphosphine) and (iii) methacrylic acid which is the Broensted acid to afford the objective compound.
    • 3. 发明专利
    • Method for producing 1,6-hexanediol
    • 1,6-己二醇的制备方法
    • JP2005035974A
    • 2005-02-10
    • JP2004127304
    • 2004-04-22
    • Daicel Chem Ind Ltdダイセル化学工業株式会社
    • KAWABE MASATO
    • B01J23/72B01J23/80B01J23/86C07B61/00C07C29/149C07C31/20
    • Y02P20/52
    • PROBLEM TO BE SOLVED: To provide a technique for producing 1,6-hexanediol at a low cost by using cyclohexanone as a starting raw material. SOLUTION: In the method, 1,6-Hexanediol is produced by a catalytic reduction reaction of a crude ε-caprolactone fraction obtained from a reaction process of an organic peracid and/or hydroperoxide with cyclohexanone or a by-product fraction composed mainly of residual ε-caprolactone left after separating ε-caprolactone from the crude ε-caprolactone, by-produced oxycaproic acid, adipic acid and their oligomers as they are in the presence of a hydrogenation catalyst or after esterifying the fraction with an alcohol. COPYRIGHT: (C)2005,JPO&NCIPI
    • 待解决的问题:提供一种通过使用环己酮作为起始原料以低成本生产1,6-己二醇的技术。 解决方案:在该方法中,通过由有机过酸和/或氢过氧化物与环己酮的反应过程获得的粗ε-己内酯馏分或副产物部分的催化还原反应制备1,6-己二醇或副产物部分 主要是在粗ε-己内酯,副产的氧己酸,己二酸及其低聚物分离ε-己内酯之后留下的残余ε-己内酯,因为它们在氢化催化剂存在下或在用醇酯化之后。 版权所有(C)2005,JPO&NCIPI
    • 6. 发明专利
    • CARBONYLATION
    • JPH11147854A
    • 1999-06-02
    • JP31567297
    • 1997-11-17
    • DAICEL CHEM
    • KAWABE MASATO
    • B01J31/24C07B61/00C07C67/38C07C69/54
    • PROBLEM TO BE SOLVED: To provide a carbonylation method for an ethylene- or acetylene-based hydrocarbon which is capable of suppressing metallization of a metal complex occurring during the carbonylation in the presence of a catalytic system containing a group VIII metal complex. SOLUTION: This carbonylation method for an ethylene- or acetylene-based hydrocarbon includes a process to react, in the presence of a catalytic system containing (1) a supply source of a group VIII metal atom or its ion, (2) an organophosphine compound and (3) an acid, (a) an ethylene- or acetylene-based hydrocarbon compound having one or more unsaturated bonds between carbons, with (b) carbon monoxide and (c) at least one nucleophilic compound selected from the group consisting of water, alcohols and carboxylic acids, wherein the reaction process is advanced by maintaining the concentration of the carbon monoxide in the reaction liquor to be 0.05-0.3 mol/L.
    • 8. 发明专利
    • PRODUCTION OF CARBOXYLIC ACID
    • JPH08245495A
    • 1996-09-24
    • JP7821195
    • 1995-03-08
    • DAICEL CHEM
    • KAWABE MASATO
    • C07C51/06C07B61/00C07C51/08C07C53/124C07C59/08
    • PURPOSE: To produce a carboxylic acid while effectively utilizing a salt and ammonia which are components of a catalyst formed as by-products by hydrolyzing a nitrile or an amide compound. CONSTITUTION: A nitrile or an amide compound is hydrolyzed with an acidic catalyst such as an inorganic acid and an ammonium salt of the acidic catalyst formed as a by-product is electrodialyzed to produce an acid and ammonia. The resultant acid is then used as a catalyst in the step for hydrolyzing the nitrile or amide compound and the produced ammonia is used as a nitrogen source in a step for producing the nitrile or amide compound. When the compound is hydrolyzed with a basic catalyst such as an alkali metallic hydroxide, the salt of the carboxylic acid with the base formed as a by-product is electrodialyzed to produce the carboxylic acid and base. The resultant base is then reutilized as a catalyst in a step for hydrolyzing the nitrile compound. The ammonia produced by the electrodialysis is reutilized as the nitrogen source in the step for producing the nitrile or amide compound. The electrodialysis can be carried out with an ion exchange membrane constituted of at least one membrane of a bipolar, a cation exchange and an anion exchange membranes.
    • 10. 发明专利
    • PRODUCTION OF DIHYDROXYACETONE
    • JPH01203348A
    • 1989-08-16
    • JP2573988
    • 1988-02-08
    • DAICEL CHEM
    • KAWABE MASATOFUKUNISHI KUNIO
    • C12P7/18C07C45/00C07C45/81C07C49/17C07C67/00
    • PURPOSE:To efficiently and readily obtain the present compound which is a raw material for medicines, by controlling the time up to start of crystallization after concentration and obtaining a crystallization liquor excellent in filterability in concentrating an aqueous solution of dihydroxyacetone, adding a solvent to the concentrated solution and carrying out crystallization. CONSTITUTION:An aqueous solution of dihydroxyacetone is concentrated and a solvent is then added after the concentration to carry out crystallization. In the process, dehydration and concentration are performed until the moisture content in the concentrated solution attains =90wt.%. After the concentration, a solvent is then added to carry out crystallization so that the time up to start of crystallization may not exceed 50hr. Thereby, the aimed compound is obtained. A lower alcohol, such as isopropanol, acetone, etc., are used as the solvent. The amount of the solvent used is preferably 0.3-2.0pts.wt. based on 1pt.wt. dihydroxyacetone. The temperature for carrying out the crystallization is optimally within the range of 0-30 deg.C.