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    • 1. 发明专利
    • Method for improving thermal conductivity of graphite
    • 改善石墨热导率的方法
    • JP2011037651A
    • 2011-02-24
    • JP2009184745
    • 2009-08-07
    • Mitsubishi Gas Chemical Co Inc三菱瓦斯化学株式会社
    • EBATA HIDEJIGOCHO YOSHIHIRO
    • C01B31/04
    • PROBLEM TO BE SOLVED: To provide graphite having further enhanced thermal conductivity, a method for producing the graphite, and a method for enhancing thermal conductivity of graphite, irrespective of that graphite is known as a good conductor and a substance excellent in thermal conductivity.
      SOLUTION: The graphite has enhanced purity of stable isotopes of carbon. The method for producing graphite is characterized by using a carbon compound having enhanced purity of stable isotopes of carbon as a raw material of the graphite. The method for enhancing thermal conductivity of graphite comprises enhancing the purity of stable isotopes of carbon in graphite.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供进一步提高导热性的石墨,石墨的制造方法和提高石墨导热性的方法,而不管石墨是什么,已知有良好的导体和热性优异的物质 电导率。

      解决方案:石墨具有提高的稳定同位素碳的纯度。 石墨的制造方法的特征在于,使用碳稳定同位素纯度高的碳化合物作为石墨的原料。 提高石墨导热性的方法包括提高石墨中碳稳定同位素的纯度。 版权所有(C)2011,JPO&INPIT

    • 3. 发明专利
    • Method for producing aromatic nitrile
    • 生产芳香植物的方法
    • JP2010024187A
    • 2010-02-04
    • JP2008188062
    • 2008-07-22
    • Mitsubishi Gas Chemical Co Inc三菱瓦斯化学株式会社
    • YAMAMOTO KAZUNARIEBATA HIDEJIKUKO YOICHI
    • C07C253/28B01J23/26B01J35/10B01J37/08C07B61/00C07C255/50C07C255/51
    • PROBLEM TO BE SOLVED: To provide a method for producing an aromatic nitrile in a high yield, stably with time and economically advantageously by performing the catalytic reaction of a mixed gas containing an alkyl-substituted aromatic hydrocarbon, ammonia and oxygen on a catalyst.
      SOLUTION: This method for producing the corresponding aromatic nitrile by performing the catalytic reaction of the mixed gas containing the alkyl-substituted aromatic hydrocarbon, ammonia and oxygen on the catalyst is provided by using the catalyst constituted by the oxides of vanadium and chromium prepared by the mechanical compression-molding of powder of them, having a ≥10 and ≤100 m
      2 /g specific surface area and further burning, and a carrier.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 待解决的问题:为了通过在含有烷基取代的芳香烃,氨和氧的混合气体的催化反应中提供以高产率生产芳族腈的方法,通过时间和经济上的有利地进行催化反应 催化剂。 解决方案:通过使用由钒和铬的氧化物构成的催化剂,通过在催化剂上进行含有烷基取代的芳香烃,氨和氧的混合气体的催化反应来生产相应的芳族腈的方法 通过其粉末的机械压制成型制备,具有≥10和≤100m比例的表面积并进一步燃烧,以及载体。 版权所有(C)2010,JPO&INPIT
    • 6. 发明专利
    • PRODUCTION OF METHYL METHACRYLATE
    • JPH0338546A
    • 1991-02-19
    • JP17119089
    • 1989-07-04
    • MITSUBISHI GAS CHEMICAL CO
    • HIGUCHI HIROBUMIKIDA KOICHIEBATA HIDEJI
    • C07C69/54C07C67/20C07C67/22C07C231/06
    • PURPOSE:To obtain the objective substance from methacrylamide and methyl formate and circulate hydrogen cyanide for use by reacting the prussic acid with acetone, hydrating the resultant acetone cyanhydrin, dehydrating the formed hydration product alpha-hydroxyisobutyramide and providing the methacrylamide. CONSTITUTION:Hydrogen cyanide and acetone are reacted in the presence of a basic catalyst at about 10 deg.C to provide acetone cyanhydrin, which is subsequently brought into contact with water in the presence of a catalyst, such as MnO2d, at 40-100 deg.C to afford alpha-hydroxyisobutyramide. The resultant compound is then subjected to dehydration reaction in the vapor phase preferably using an amide compound (e.g. N-methylpyrrolidone) as a diluent to provide methacrylamide, which is subsequently reacted with methyl formate or methanol and CO in the presence of an alkali metal alcoholate or alkaline earth metal oxide as a catalyst to afford the objective substance and formamide. Hydrogen cyanide is subsequently obtained from the formamide and circulated for use. thereby, the subject substance is obtained from the readily available raw materials in high yield.