Process for preparing thiol
    1.
    发明专利
    Process for preparing thiol 审中-公开
    制备THIOL的方法

    公开(公告)号:JP2006188509A

    公开(公告)日:2006-07-20

    申请号:JP2005361255

    申请日:2005-12-15

    CPC classification number: C07C319/04 C07C321/04

    Abstract: PROBLEM TO BE SOLVED: To provide a process for preparing an alkylthiol by the addition of hydrogen sulfide to a double bond of an olefin by which the problems caused by the use of a solid acid catalyst are solved.
    SOLUTION: The process for preparing the alkylthiol involves adding hydrogen sulfide to the double bond of the 6-20C olefin at a temperature of from 20 to 150°C and a pressure of from 1 to 40 bar, wherein the reaction is carried out in the presence of at least one liquid organic acid. The use of the liquid organic acid as a catalyst for increasing the selectivity and/or reaction rate in the addition of the hydrogen sulfide to the double bond of the 6-20C olefin to prepare the alkylthiol is also provided.
    COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 待解决的问题:提供一种通过在通过使用固体酸催化剂引起的问题的烯烃的双键中加入硫化氢来制备烷基硫醇的方法。 解决方案:制备烷基硫醇的方法包括在20〜150℃的温度和1〜40巴的压力下向6-20C烯烃的双键中加入硫化氢,其中反应进行 在至少一种液体有机酸存在下进行。 还提供了使用液体有机酸作为催化剂以增加在6-20℃烯烃的双键中加入硫化氢以制备烷基硫醇的选择性和/或反应速率。 版权所有(C)2006,JPO&NCIPI

    3.
    发明专利
    未知

    公开(公告)号:AT349422T

    公开(公告)日:2007-01-15

    申请号:AT03755040

    申请日:2003-05-19

    Applicant: BASF AG

    Abstract: The present invention relates to a continuous process for preparing isocyanates by reacting primary amines with phosgene, wherein the reaction is carried out in a cascade of at least two tube reactors and the gas phase formed in the reaction is separated off in a phase separator after each reactor and only the liquid phase is passed to the next reactor or to product purification and the reaction volume of the first tube reactor is only a fraction of the total reaction volume.

    5.
    发明专利
    未知

    公开(公告)号:DE10222968A1

    公开(公告)日:2003-12-04

    申请号:DE10222968

    申请日:2002-05-23

    Applicant: BASF AG

    Abstract: The present invention relates to a continuous process for preparing isocyanates by reacting primary amines with phosgene, wherein the reaction is carried out in a cascade of at least two tube reactors and the gas phase formed in the reaction is separated off in a phase separator after each reactor and only the liquid phase is passed to the next reactor or to product purification and the reaction volume of the first tube reactor is only a fraction of the total reaction volume.

    8.
    发明专利
    未知

    公开(公告)号:DE10129233A1

    公开(公告)日:2003-01-02

    申请号:DE10129233

    申请日:2001-06-19

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing isocyanates by reacting primary amines with phosgene, and using isocyanate as the solvent. The inventive method is characterized in that a portion or the entire quantity of the isocyanate used as the solvent is only added to the reaction batch once the amine and the phosgene have been combined.

    9.
    发明专利
    未知

    公开(公告)号:DE10035308A1

    公开(公告)日:2002-01-31

    申请号:DE10035308

    申请日:2000-07-18

    Applicant: BASF AG

    Abstract: The invention relates to a method for the production of polyolefins at pressures of from 1 to 4,000 bar and temperatures of from 20 to 350 DEG C in the presence of a catalyst system, comprising an organometallic compound from the group of the metallocenes or the catalytically active iron, cobalt, nickel, or palladium complexes. The organometallic compound comprises a Lewis base functionality which is arranged such that said functionality can co-ordinate intramolecularly to the central metal atom of the organometallic compound. The reaction temperature is adjusted such that the resulting polyolefin has a bimodal molecular weight distribution MW/MN of

Patent Agency Ranking