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235 条记录 (耗时 0.035 秒)

    Process for Friedel-Crafts reaction, and catalyst therefore
    2.
    发明授权
    Process for Friedel-Crafts reaction, and catalyst therefore 有权

    公开(公告)号：US11465958B2

    公开(公告)日：2022-10-11

    申请号：US16517546

    申请日：2019-07-20

    申请人： Fujian Yongjing Technology Co., Ltd.

    发明人： Hongjun Du ,  Wenting Wu

    IPC分类号： C07C45/46 ,  B01J27/08 ,  C07C17/269 ,  C07C201/12 ,  C07C22/08 ,  C07C49/813 ,  C07C205/12

    摘要： 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 producing 2, 3, 3, 3-tetrafluoropropene
    10.
    发明授权
    Process for producing 2, 3, 3, 3-tetrafluoropropene 有权
    制备2,3,3,3-四氟丙烯的方法

    公开(公告)号：US09206096B2

    公开(公告)日：2015-12-08

    申请号：US14486125

    申请日：2014-09-15

    申请人： ASAHI GLASS COMPANY, LIMITED

    发明人： Shoji Furuta ,  Yu Takeuchi

    IPC分类号： C07C17/269

    CPC分类号： C07C17/269 ,  C07C21/18

    摘要： To provide an economically advantageous process for producing industrially useful HFO-1234yf efficiently and in a sufficiently controlled state by one reaction involving thermal decomposition, by using readily available raw material. A process for producing 2,3,3,3-tetrafluoropropene from a raw material composition containing chlorodifluoromethane and chloromethane, by a synthetic reaction involving thermal decomposition, which comprises (a) a step of supplying the chlorodifluoromethane and the chloromethane to a reactor, as preliminarily mixed or separately, in such amounts that the chloromethane would be in a ratio of from 0.01 to 3 mol to 1 mol of the chlorodifluoromethane, (b) a step of supplying a heat medium to the reactor, and (c) a step of bringing the heat medium in contact with the chlorodifluoromethane and the chloromethane in the reactor to form the 2,3,3,3-tetrafluoropropene.

    摘要翻译： 通过使用容易获得的原料，通过一种涉及热分解的反应，有效地并在足够受控的状态下提供经济上有利的工业生产工业上有用的HFO-1234yf方法。 通过涉及热分解的合成反应，由包含氯二氟甲烷和氯甲烷的原料组合物制备2,3,3,3-四氟丙烯的方法，其包括（a）将氯二氟甲烷和氯甲烷供应到反应器中的步骤如 预先混合或分开，使得氯甲烷的比例为0.01至3摩尔至1摩尔氯代二氟甲烷，（b）将热介质供应至反应器的步骤，和（c） 使热介质与反应器中的氯二氟甲烷和氯甲烷接触以形成2,3,3,3-四氟丙烯。