中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

51 records (took 0.022 seconds)

    Integrated process for the production of Z-1,1,1,4,4,4-hexafluoro-2-butene
    32.
    发明授权
    Integrated process for the production of Z-1,1,1,4,4,4-hexafluoro-2-butene 有权

    公开(公告)号：US10099976B2

    公开(公告)日：2018-10-16

    申请号：US15699067

    申请日：2017-09-08

    Applicant: THE CHEMOURS COMPANY FC, LLC

    Inventor： Ivan Sergeyevich Baldychev ,  Stephan M Brandstadter ,  Patricia Cheung ,  Mario Joseph Nappa ,  Sheng Peng ,  Donald J Toton

    IPC: C07C17/25 ,  C07C17/23 ,  C07C17/354 ,  C07C17/281

    Abstract: Disclosed is a process for the preparation of cis-1,1,1,4,4,4-hexafluoro-2-butene comprising contacting 1,1,1-trifluorotrichloroethane with hydrogen in the presence of a catalyst comprising ruthenium to produce a product mixture comprising 1316mxx, recovering said 1316mxx as a mixture of Z- and E-isomers, contacting said 1316mxx with hydrogen, in the presence of a catalyst selected from the group consisting of copper on carbon, nickel on carbon, copper and nickel on carbon and copper and palladium on carbon, to produce a second product mixture, comprising E- or Z-CFC-1326mxz, and subjecting said second product mixture to a separation step to provide E- or Z-1326mxz. The E- or Z-1326mxz can be dehydrochlorinated in an aqueous basic solution with an alkali metal hydroxide in the presence of a phase transfer catalyst to produce hexafluoro-2-butyne, which can then be selectively hydrogenated to produce Z-1, 1,1,4,4,4-hexafluoro-2-butene using using either Lindlar's catalyst, or a palladium catalyst further comprising a lantanide element or silver.

    Dehydrochlorination of HCFC-336 isomers to 1,1,1,4,4,4-hexafluoro-2-butyne
    34.
    发明授权
    Dehydrochlorination of HCFC-336 isomers to 1,1,1,4,4,4-hexafluoro-2-butyne 有权
    将HCFC-336异构体脱氯化氢化为1,1,1,4,4,4-六氟-2-丁炔

    公开(公告)号：US09440896B2

    公开(公告)日：2016-09-13

    申请号：US14416313

    申请日：2013-09-27

    Applicant: THE CHEMOURS COMPANY FC LLC

    Inventor： Sheng Peng ,  Mario Joseph Nappa

    IPC: C07C17/25

    CPC classification number: C07C17/25 ,  C07C21/22

    Abstract: Disclosed is a process for producing hexafluoro-2-butyne comprising, reacting HCFC-336 with an aqueous solution of an alkali metal hydroxide in the presence of a quaternary alkylammonium salt which comprises at least one alkyl group of at least 8 carbons, and recovering the hexafluoro-2-butyne, wherein the conversion of dichloro-1,1,1,4,4,4-hexafluorobutane is at least 50% per hour. Also disclosed is a process for producing hexafluoro-2-butyne comprising, reacting HCFC-336 with an aqueous solution of an alkali metal hydroxide in the presence of a quaternary alkylammonium salt having alkyl groups of from four to ten carbon atoms, and mixtures thereof, and a non-ionic surfactant, and recovering the hexafluoro-2-butyne, and wherein the conversion of dichloro-1,1,1,4,4,4-hexafluorobutane to hexafluoro-2-butyne is at least 20% per hour.

    Abstract translation: 公开了一种生产六氟-2-丁炔的方法，其包括在含有至少一个至少8个碳原子的烷基的季烷基铵盐存在下使HCFC-336与碱金属氢氧化物的水溶液反应，并回收 六氟-2-丁炔，其中二氯-1,1,1,4,4,4-六氟丁烷的转化率为至少50％/小时。 还公开了一种生产六氟-2-丁炔的方法，其包括在具有四至十个碳原子的烷基的季烷基铵盐及其混合物的存在下使HCFC-336与碱金属氢氧化物的水溶液反应， 和非离子表面活性剂，并回收六氟-2-丁炔，其中二氯-1,1,1,4,4,4-六氟丁烷转化为六氟-2-丁炔至少为20％/小时。

    Dehydrofluorination of 245fa to 1234ze
    35.
    发明授权
    Dehydrofluorination of 245fa to 1234ze 有权
    脱卤化氢245fa至1234ze

    公开(公告)号：US09302962B2

    公开(公告)日：2016-04-05

    申请号：US14819807

    申请日：2015-08-06

    Applicant: THE CHEMOURS COMPANY FC LLC

    Inventor： Sheng Peng ,  Mario Joseph Nappa

    IPC: C07C17/00 ,  C07C17/25

    CPC classification number: C07C17/25 ,  C07C21/18

    Abstract: A method of producing a fluoropropane of formula CF3CH═CHF, comprising contacting a mixture of 1,1,1,3,3-pentafluoropropane and Z-1,3,3,3-tetrafluoropropene in the gas phase with a catalyst comprising at least one catalyst selected from the group consisting of fluorinated Cr2O3 or Cr/Ni on fluoride alumina, in the presence of an oxygen containing gas, to form a mixture comprising Z-1,3,3,3-tetrafluoropropane, E-1,3,3,3,-tetrafluoropropene, hydrogen fluoride, and optionally unreacted 1,1,1,3,3-pentafluoropropane, separating the E-1,3,3,3-tetrafluoropropene from the Z-isomer and any unreacted 1,1,1,3,3-pentafluoropropane, if present, and recovering said E-1,3,3,3-tetrafluoropropene.

    Abstract translation: 一种制备式CF 3 CH = CHF氟代丙烷的方法，包括使气相中的1,1,1,3,3-五氟丙烷和Z-1,3,3,3-四氟丙烯的混合物与至少包含 在含氧气体的存在下，在氟化矾土上选自氟化Cr 2 O 3或Cr / Ni的一种催化剂，以形成包含Z-1,3,3,3-四氟丙烷，E-1,3， 3,3,3-四氟丙烯，氟化氢和任选的未反应的1,1,1,3,3-五氟丙烷，从Z-异构体中分离出E-1,3,3,3-四氟丙烯和任何未反应的1,1， 如果存在1,3,3-五氟丙烷，并回收所述E-1,3,3,3-四氟丙烯。

Patent Agency Ranking