中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

1167 records (took 0.023 seconds)

    Process for the manufacture of trifluoroethylamine
    2.
    发明授权
    Process for the manufacture of trifluoroethylamine 有权

    公开(公告)号：US11155515B2

    公开(公告)日：2021-10-26

    申请号：US16907187

    申请日：2020-06-20

    Applicant: Fujian Yongjing Technology Co., Ltd.

    Inventor： Hongjun Du ,  Wenting Wu

    IPC: C07C209/08 ,  C07C211/15 ,  B01J27/06

    Abstract: The invention relates to a new process for the manufacture of fluoroaryl compounds and derivatives thereof, in particular of fluorobenzenes and derivatives thereof, and especially wherein said manufacture relates to an environmentally friendly production of the said compounds. Thus, the present invention overcomes the disadvantages of the prior art processes, and in a surprisingly simple and beneficial manner, and as compared to the prior art processes, in particular, the invention provides a more efficient and energy saving processes, and also provides a more environmentally friendly process, for the manufacture of nuclear fluorinated aromatics, and preferably of nuclear fluorinated fluorobenzenes. Accordingly, in one aspect of the invention, an industrially beneficial process for preparing fluorobenzenes from halobenzene precursors using HF to form hydrogen halide is provided by the present invention. A beneficial and surprisingly simple use of chlorobenzene as an industrially interesting starting material in the manufacture of fluorobenzene is provided.

    Process for manufacture of 1,1,1-trifluoro-2-chloroethane
    3.
    发明授权
    Process for manufacture of 1,1,1-trifluoro-2-chloroethane 有权

    公开(公告)号：US11148994B2

    公开(公告)日：2021-10-19

    申请号：US16907185

    申请日：2020-06-20

    Applicant: Fujian Yongjing Technology Co., Ltd

    Inventor： Hongjun Du ,  Wenting Wu

    IPC: C07C209/08 ,  C07C211/15 ,  B01J27/06

    Abstract: The invention relates to a new process for the manufacture of fluoroaryl compounds and derivatives thereof, in particular of fluorobenzenes and derivatives thereof, and especially wherein said manufacture relates to an environmentally friendly production of the said compounds. Thus, the present invention overcomes the disadvantages of the prior art processes, and in a surprisingly simple and beneficial manner, and as compared to the prior art processes, in particular, the invention provides a more efficient and energy saving processes, and also provides a more environmentally friendly process, for the manufacture of nuclear fluorinated aromatics, and preferably of nuclear fluorinated fluorobenzenes. Accordingly, in one aspect of the invention, an industrially beneficial process for preparing fluorobenzenes from halobenzene precursors using HF to form hydrogen halide is provided by the present invention. A beneficial and surprisingly simple use of chlorobenzene as an industrially interesting starting material in the manufacture of fluorobenzene is provided.

    Process for the Manufacture of Fluoroaryl Compounds and Derivatives
    4.
    发明申请
    Process for the Manufacture of Fluoroaryl Compounds and Derivatives 审中-公开

    公开(公告)号：US20200262770A1

    公开(公告)日：2020-08-20

    申请号：US16517544

    申请日：2019-07-20

    Applicant: Fujian Yongjing Technology Co., Ltd.

    Inventor： Hongjun DU ,  Wenting WU

    IPC: C07C17/20 ,  B01J27/06

    Abstract: The invention relates to a new process for the manufacture of fluoroaryl compounds and derivatives thereof, in particular of fluorobenzenes and derivatives thereof, and especially wherein said manufacture relates to an environmentally friendly production of the said compounds. Thus, the present invention overcomes the disadvantages of the prior art processes, and in a surprisingly simple and beneficial manner, and as compared to the prior art processes, in particular, the invention provides a more efficient and energy saving processes, and also provides a more environmentally friendly process, for the manufacture of nuclear fluorinated aromatics, and preferably of nuclear fluorinated fluorobenzenes. Accordingly, in one aspect of the invention, an industrially beneficial process for preparing fluorobenzenes from halobenzene precursors using HF to form hydrogen halide is provided by the present invention. A beneficial and surprisingly simple use of chlorobenzene as an industrially interesting starting material in the manufacture of fluorobenzene is provided.

    Process for the manufacture of chroman derivatives, especially α-tocopherol and alka-noates thereof
    8.
    发明授权
    Process for the manufacture of chroman derivatives, especially α-tocopherol and alka-noates thereof 有权

    公开(公告)号：US08431727B2

    公开(公告)日：2013-04-30

    申请号：US12381127

    申请日：2009-03-06

    Applicant: Werner Bonrath ,  Yann Foricher ,  Thomas Netscher ,  Angela Wildermann

    Inventor： Werner Bonrath ,  Yann Foricher ,  Thomas Netscher ,  Angela Wildermann

    IPC: C07D311/00 ,  B01J27/06 ,  B01J27/135

    CPC classification number: C07D311/72

    Abstract: The present invention relates to novel processes for the manufacture of chroman derivatives such as α-tocopherol (TCP) and alkanoates thereof, especially α-tocopheryl acetate (TCPA), whereby at least one step of the processes is carried out in the presence of a Lewis acid or a mixture of a Lewis acid with a Bronsted acid as the catalyst under pressure, preferably at an absolute pressure of at least 1.1 bar.As starting materials for the manufacture of TCP and its alkanoates either a mixture of 2,3,5-trimethylhydroquinone (TMHQ) or 2,3,6-trimethylhydroquinone-1-alkanoate (TMHQA) and a compound selected from the group consisting of phytol (PH), isophytol (IP) and (iso)phytol derivatives or 2-phytyl-3,5,6-trimethyl-hydroquinone (PTMHQ)/3-phytyl-2,5,6-trimethylhydroquinone-1-alkanoate (PTMHQA) and/or an isomer thereof are used.Suitable Lewis acids are indium(III) salts and scandium(III) salts. Suitable acid mixtures are iron/iron(II) chloride/hydrogen chloride and zinc(II) chloride/hydrogen chloride.

Patent Agency Ranking