Method and device for purifying 1,4-bis (bromodifluoromethyl) benzene
    91.
    发明授权
    Method and device for purifying 1,4-bis (bromodifluoromethyl) benzene 有权
    纯化1,4-双(溴二氟甲基)苯的方法和装置

    公开(公告)号:US07465841B2

    公开(公告)日:2008-12-16

    申请号:US10898925

    申请日:2004-07-27

    摘要: A method and a device for purifying 1,4-bis(bromodifluoromethyl)benzene are disclosed. In order to solve the problem of hard to purify and separate 1,4-bis(bromodifluoromethyl)benzene crude products, diphenylmethane that has a higher boiling point and does not interact with 1,4-bis(bromodifluoromethyl)benzene is mixed with the 1,4-bis(bromodifluoromethyl)benzene crude products for evaporation. Afterwards, the purity of the vaporized product is detected and only that reaching an expected purity is collected to obtain high-purity 1,4-bis(bromodifluoromethyl)benzene.

    摘要翻译: 公开了用于纯化1,4-双(溴二氟甲基)苯的方法和装置。 为了解决难以纯化和分离1,4-双(溴二氟甲基)苯粗产物的问题,具有较高沸点并且不与1,4-双(溴二氟甲基)苯相互作用的二苯基甲烷与1 ,4-双(溴二氟甲基)苯粗产物蒸发。 之后,检测蒸发产物的纯度,仅收集达到预期纯度的纯度,得到高纯度的1,4-双(溴二氟甲基)苯。

    Method of making 1,1,1-trifluoroethane
    92.
    发明授权
    Method of making 1,1,1-trifluoroethane 有权
    制备1,1,1-三氟乙烷的方法

    公开(公告)号:US07071368B1

    公开(公告)日:2006-07-04

    申请号:US11054029

    申请日:2005-02-09

    摘要: A process for producing 1,1,1-trifluoroethane (HFC-143a) which process comprises reacting hydrogen fluoride with vinylidene chloride along with one or more of 1,1,-dichloro-1-fluoroethane (HCFC-141b), 1-chloro-1,1-difluoroethane (HCFC-142b) and 1,1,1-trichloroethane (HCC-140a) in the presence of pentavalent antimony as a fluorination catalyst under conditions to produce 1,1,1-trifluoroethane (HFC-143a), generally in yields of 90% or more.

    摘要翻译: 一种制备1,1,1-三氟乙烷(HFC-143a)的方法,该方法包括使氟化氢与偏二氯乙烯与一种或多种1,1,1-二氯-1-氟乙烷(HCFC-141b),1-氯 -1,1-二氟乙烷(HCFC-142b)和1,1,1-三氯乙烷(HCC-140a)在五价锑作为氟化催化剂存在下,生成1,1,1-三氟乙烷(HFC-143a) ,通常为90%以上的收率。

    Process for the preparation of 1,1-dichloro-3,3,3-trifluoropropane
    93.
    发明授权
    Process for the preparation of 1,1-dichloro-3,3,3-trifluoropropane 失效
    制备1,1-二氯-3,3,3-三氟丙烷的方法

    公开(公告)号:US07067705B2

    公开(公告)日:2006-06-27

    申请号:US10938652

    申请日:2004-09-10

    申请人: Joseph J. Moscoe

    发明人: Joseph J. Moscoe

    摘要: A convenient and economical process for the preparation of 1,1-dichloro-3,3,3-trifluoropropane (HCFC-243) by the reaction of 1,1,1,3,3-pentachloropropane (HCC-240) with hydrogen fluoride in the presence of an activated hydrofluorination catalyst. Also, the selective fluorination of hydrochlorocarbons and/or hydrochlorofluorocarbons, or mixtures thereof is shown. A HCFC-243 reaction product yield of greater than 40% is obtained.

    摘要翻译: 通过1,1,1,3,3-五氯丙烷(HCC-240)与氟化氢反应制备1,1-二氯-3,3,3-三氟丙烷(HCFC-243)的方便和经济的方法 在活化氢氟化催化剂存在下。 此外,显示了氢氯烃和/或氢氯氟烃的选择性氟化,或其混合物。 得到大于40%的HCFC-243反应产物收率。

    Preparation of 1,2,3,3-tetrachloropropene
    94.
    发明授权
    Preparation of 1,2,3,3-tetrachloropropene 失效
    制备1,2,3,3-四氯丙烯

    公开(公告)号:US5811605A

    公开(公告)日:1998-09-22

    申请号:US802704

    申请日:1997-02-19

    IPC分类号: C07C17/25 C07C21/00

    CPC分类号: C07C17/25

    摘要: The dehydrochlorination of 1,1,2,3,3-pentachloropropane to produce 1,2,3,3-tetrachloropropene is conducted using aqueous alkali metal hydroxide in the substantial absence of added ethanol. The 1,2,3,3-tetrachloropropene is recovered from the reaction mixture in the substantial absence of added ether. The preferred methods of recovery are steam distillation and flash distillation.

    摘要翻译: 1,1,2,3,3-五氯丙烷的脱氯化氢制备1,2,3,3-四氯丙烯是在碱金属氢氧化物水溶液中进行的,基本上不加入乙醇。 在基本上没有加入乙醚的情况下,从反应混合物中回收1,2,3,3-四氯丙烯。 优选的回收方法是蒸汽蒸馏和闪蒸。

    Selective functionalization of fullerenes
    95.
    发明授权
    Selective functionalization of fullerenes 失效
    富勒烯的选择性功能化

    公开(公告)号:US5364993A

    公开(公告)日:1994-11-15

    申请号:US7305

    申请日:1993-01-21

    摘要: Fullerenes are selectively functionalized by adsorbing fullerene molecules on molecular sieves such as zeolites as the first step in a desired functionalizing reaction and then adding functional groups or compounds to the fullerenes within the molecular sieves. An improved reactor for fullerene material is thereby available. Selectively functionalized fullerenes formed in accordance with the invention can also serve as precursors for further selectively functionalized products.

    摘要翻译: 通过在分子筛(例如沸石)上吸附富勒烯分子作为所需官能化反应中的第一步,然后向分子筛内的富勒烯添加官能团或化合物,选择性地使富勒烯官能化。 因此可获得用于富勒烯材料的改进的反应器。 根据本发明形成的选择性官能化的富勒烯也可以用作进一步选择性官能化产物的前体。

    Melt oxychlorination process
    100.
    发明授权
    Melt oxychlorination process 失效
    熔融氧氯化工艺

    公开(公告)号:US4130595A

    公开(公告)日:1978-12-19

    申请号:US716292

    申请日:1976-08-20

    申请人: Harold E. Bellis

    发明人: Harold E. Bellis

    IPC分类号: C07C17/15 C07C21/00

    CPC分类号: C07C17/15

    摘要: A melt oxychlorination process which produces trichloroethylene and perchloroethylene by chlorinating C.sub.2 hydrocarbons and their incompletely chlorinated derivatives containing at least 50% by weight of 1,1,2-trichloroethane, dichloroethylene, or both together, with a melt consisting essentially of iron chloride, copper chloride and alkali metal chloride by dispersing the material to be chlorinated in the melt whereby said material is chlorinated by the melt, wherein certain alkali metal chlorides, proportions thereof, and process conditions are utilized to provide desired product selectivity.

    摘要翻译: 一种熔融氧氯化方法,其通过将含有至少50重量%的1,1,2-三氯乙烷,二氯乙烯或两者的C2烃及其不完全氯化的衍生物与基本上由氯化铁,铜 氯化物和碱金属氯化物,通过将待氯化的材料分散在熔体中,由此所述材料被熔体氯化,其中使用某些碱金属氯化物,其比例和工艺条件来提供所需的产物选择性。