中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

416 records (took 0.026 seconds)

    IMPROVED VAPOR PHASE OXIDATION OF PROPYLENE TO ACROLEIN
    91.
    发明申请
    IMPROVED VAPOR PHASE OXIDATION OF PROPYLENE TO ACROLEIN 审中-公开
    丙烯的改进的蒸气相氧化反应

    公开(公告)号：WO99003809A1

    公开(公告)日：1999-01-28

    申请号：PCT/US1998/014511

    申请日：1998-07-14

    IPC: B01J23/31 ,  B01J8/00 ,  B01J8/18 ,  B01J8/24 ,  B01J8/26 ,  B01J8/38 ,  B01J23/92 ,  B01J23/94 ,  C07B61/00 ,  C07C45/28 ,  C07C45/35 ,  C07C47/22 ,  C07C201/14

    CPC classification number: B01J23/94 ,  B01J8/0055 ,  B01J8/1863 ,  B01J8/26 ,  C07C45/28 ,  Y02P20/584 ,  C07C47/22

    Abstract: An improved method for the selective vapor phase oxidation of propylene to acrolein in a recirculating solids reactor system using a bismuth molybdate multimetal oxide involving specific reactant concentrations (preferably 5 mol % to 30 md % propylene, 0 to 20 mol % oxygen, and the remainder inert gas), particle size (1 to 300 micrometers), temperature (250 to 450 DEG C) and gas (1 to 15 seconds) and solids (2 to 60 seconds) residence times. Such a process leads to improved selectivity and propylene conversion.

    Abstract translation: 在使用含有特定反应物浓度的钼酸铋多金属氧化物（优选5mol％至30md％的丙烯，0至20mol％的氧气和其余的氧化物）的循环固体反应器系统中，丙烯选择性气相氧化成丙烯醛的改进方法 惰性气体），粒径（1〜300微米），温度（250〜450℃）和气体（1〜15秒）和固体（2〜60秒）的停留时间。 这种方法导致改进的选择性和丙烯转化率。

    Oxidative process for the preparation of allyl quinone derivatives
    94.
    发明授权
    Oxidative process for the preparation of allyl quinone derivatives 失效
    用于制备烯丙基醌衍生物的氧化方法

    公开(公告)号：US5565586A

    公开(公告)日：1996-10-15

    申请号：US396777

    申请日：1995-03-01

    Applicant: Kimio Hamamura ,  Chiaki Seki ,  Masayuki Konishi

    Inventor： Kimio Hamamura ,  Chiaki Seki ,  Masayuki Konishi

    IPC: A61K31/12 ,  A61K31/122 ,  A61P3/08 ,  B01J27/25 ,  C07B61/00 ,  C07C201/12 ,  C07C201/14 ,  C07C205/37 ,  C07C50/02

    CPC classification number: C07C205/37

    Abstract: A process for the industrial preparation of the quinone derivative represented by the following general formula: ##STR1## which is an intermediate for chroman derivatives useful as a blood sugar lowering agent, and novel intermediates, encompasses the following:(1) Oxidation of the corresponding hydroquinone derivative, and(2) Hydrolysis of the corresponding acyl hydroquinone derivative with a Claisen alkali, followed by the oxidation of resulting hydrolyzate.

    Abstract translation: 一种用于工业制备由以下通式表示的醌衍生物的方法：作为用作降糖剂的苯并二氢吡喃衍生物的中间体的“IMAGE”和新的中间体包括以下：（1）氧化相应的 氢醌衍生物，和（2）用Claisen碱水解相应的酰基氢醌衍生物，然后氧化得到的水解产物。

    Process for the preparation of fluorinated nitroalkanes
    95.
    发明授权
    Process for the preparation of fluorinated nitroalkanes 失效
    制备氟化硝基烷烃的方法

    公开(公告)号：US4518812A

    公开(公告)日：1985-05-21

    申请号：US575636

    申请日：1984-01-31

    Applicant: Bernd Baasner ,  Hermann Hagemann ,  Erich Klauke

    Inventor： Bernd Baasner ,  Hermann Hagemann ,  Erich Klauke

    IPC: C07C67/00 ,  C07C201/00 ,  C07C201/14 ,  C07C205/08 ,  C07C76/02 ,  C07C79/02

    CPC classification number: C07C201/14 ,  C07C205/08

    Abstract: In the conjugated nitrofluorination of an olefin by reacting an olefin of the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each independently is hydrogen, fluorine, chlorine, bromine, alkyl, halogenoalkyl or cycloalkyl, orR.sup.2 and R.sup.4 together are an alkylene radical of 3 to 6 carbon atoms,with hydrogen fluoride and nitric acid to produce an .alpha.-fluorinated nitroalkane of the formula ##STR2## the improvement which comprises effecting the reaction in a vessel protected against corrosion employing about 1 to 1.1 mols of hydrogen fluoride and about 1 to 2 mols of nitric acid per mol of olefin. The process uses much less HF than heretofore and the products are useful intermediates in making herbicides. Some of the products are new.

    Abstract translation: 在烯烃的共轭硝基氟化中，通过使式（IMAGE）的烯烃反应，其中R 1，R 2，R 3和R 4各自独立地是氢，氟，氯，溴，烷基，卤代烷基或环烷基，或者R 2和R 4一起是 具有3至6个碳原子的亚烷基，与氟化氢和硝酸反应以产生下式的α-氟化的硝基烷烃：其中包括在使用约1至1.1摩尔氟化氢的保护反应的容器中进行反应 和约1至2摩尔硝酸/摩尔烯烃。 该方法使用比迄今为止少得多的HF，并且该产品是制备除草剂的有用中间体。 一些产品是新的。

    Apparatus for producing nitroparaffins
    96.
    发明授权
    Apparatus for producing nitroparaffins 失效
    硝基石油生产装置

    公开(公告)号：US3869253A

    公开(公告)日：1975-03-04

    申请号：US38450873

    申请日：1973-08-01

    Applicant: AZOTE & PROD CHIM

    Inventor： LHONORE PIERRE ,  COHEN GUY ,  JACQUINOT BERNARD

    IPC: B01J12/00 ,  C07C201/14 ,  C07C205/02 ,  C07C79/02 ,  B01J1/00

    CPC classification number: C07C201/06 ,  B01J12/00 ,  Y02P20/582 ,  C07C205/02

    Abstract: The invention relates to an process for the production of nitroparaffins from hydrocarbons higher than methane, by nitration with nitrogen peroxide in the presence of oxygen, introduced in the form of air, wherein the nitration is carried out at a pressure which is between 8 and approximately 14 bars, the reactant gases being preheated under the reaction pressure and introduced into the reaction zone between 150* and 330*C, the gaseous effluents originating from the nitration zone being subjected to a rapid cooling or quenching.

    Abstract translation: 本发明涉及一种从高于甲烷的烃生产硝基烷烃的方法，通过在氧气存在下用氮气进行硝化，以空气的形式引入，其中硝化在8至大约的压力下进行 14巴，反应物气体在反应压力下预热，并引入150至330℃的反应区，来自硝化区的气态流出物经受快速冷却或骤冷。

Patent Agency Ranking