中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

15 records (took 0.039 seconds)

    METHOD FOR PRODUCING FLUORINATED ORGANIC COMPOUNDS
    9.
    发明申请
    METHOD FOR PRODUCING FLUORINATED ORGANIC COMPOUNDS 有权
    生产氟化有机化合物的方法

    公开(公告)号：US20070197842A1

    公开(公告)日：2007-08-23

    申请号：US11619592

    申请日：2007-01-03

    Applicant: Sudip Mukhopadhyay ,  Hsueh Tung ,  Barbara Light ,  Steven Phillips ,  Jing Ma ,  Cheryl Bortz ,  Michael Van Der Puy ,  Daniel Merkel ,  Rajesh Dubey

    Inventor： Sudip Mukhopadhyay ,  Hsueh Tung ,  Barbara Light ,  Steven Phillips ,  Jing Ma ,  Cheryl Bortz ,  Michael Van Der Puy ,  Daniel Merkel ,  Rajesh Dubey

    IPC: C07C21/18 ,  C07C17/25

    CPC classification number: C07C17/25 ,  C07C17/00 ,  C07C17/04 ,  C07C17/087 ,  C07C17/10 ,  C07C17/20 ,  C07C17/204 ,  C07C17/206 ,  C07C17/21 ,  C07C17/26 ,  C07C17/269 ,  C07C17/272 ,  C07C17/278 ,  C07C21/18 ,  C07C19/01 ,  C07C19/10 ,  C07C19/08 ,  C07C21/073 ,  C07C21/04

    Abstract: Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF3CF═CH2 (1234yf). Three steps may be used in preferred embodiments in which a feedstock such as CCl2═CClCH2Cl (which may be purchased or synthesized from 1,2,3-trichloropropane) is fluorinated (preferably with HF in gas-phase in the presence of a catalyst) to synthesize a compound such as CF3CCl═CH2, preferably in a 80-96% selectivity. The CF3CCl═CH2 is preferably converted to CF3CFClCH3 (244-isomer) using a SbCl5 as the catalyst which is then transformed selectively to 1234yf, preferably in a gas-phase catalytic reaction using activated carbon as the catalyst. For the first step, a mixture of Cr2O3 and FeCl3/C is preferably used as the catalyst to achieve high selectivity to CF3CCl═CH2 (96%). In the second step, SbCl5/C is preferably used as the selective catalyst for transforming 1233xf to 244-isomer, CF3CFClCH3. The intermediates are preferably isolated and purified by distillation and used in the next step without further purification, preferably to a purity level of greater than about 95%.

    Abstract translation: 公开了用于生产氟化烯烃的方法，优选适于CF 3 CH 2 CH 2（1234yf）的商业化。 在优选实施方案中可以使用三个步骤，其中原料如CCl 2 -CClCH 2 Cl（其可以从1,2,3-三氯丙烷购买或合成） 被氟化（优选在催化剂存在下在气相中用HF）合成化合物如CF 3 CCl-CH 2，优选在80-96 ％选择性。 CF 3 CCl-CH 2 2优选使用以下化合物转化为CF 3 CFClCH 3（244-异构体） SbCl 5作为催化剂，然后将其选择性地转化为1234yf，优选在使用活性炭作为催化剂的气相催化反应中进行。 对于第一步，优选使用Cr 2 O 3 O 3和FeCl 3 / C的混合物作为催化剂以实现对CF的高选择性 3 CCl-CH 2（96％）。 在第二步中，优选使用SbCl 5 / C作为将1233xf转化为244-异构体CF 3 CFClCH 3的选择性催化剂。 中间体优选通过蒸馏分离和纯化，并用于下一步骤而不进一步纯化，优选纯度高于约95％。

Patent Agency Ranking