会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明授权
    • Method for making isobutyric acid
    • 制备异丁酸的方法
    • US4647696A
    • 1987-03-03
    • US474799
    • 1983-03-14
    • Siegmund BeseckeGuenter SchroederHermann-Josef SiegertWolfgang Gaenzler
    • Siegmund BeseckeGuenter SchroederHermann-Josef SiegertWolfgang Gaenzler
    • C07C51/14C07C67/38C07B53/00C07C53/124
    • C07C51/14C07C67/38
    • What is disclosed is a continuous one-step method for the preparation of isobutyric acid or a lower alkyl ester thereof by the Koch synthesis, which method comprises reacting propylene, carbon monoxide, and water or a lower alcohol, in the gaseous and liquid phases, in the presence of hydrogen fluoride as a Koch catalyst, at a temperature between 80.degree. C. and 160.degree. C., at a dwell time of the liquid phase of less than 20 minutes, and with a high degree of backmixing, while maintaining the content of propylene in the reaction mixture at less than one percent by weight of the liquid phase, wherein all or part of the propylene, carbon monoxide, and water or lower alcohol can be replaced by binary addition compounds formed pairwise between these materials. In the alternative, isopropylformiate can be continuously rearranged in the presence of hydrogen fluoride to produce isobutyric acid.
    • 所公开的是通过Koch合成制备异丁酸或其低级烷基酯的连续一步法,该方法包括在气相和液相中使丙烯,一氧化碳和水或低级醇反应, 在作为Koch催化剂的氟化氢的存在下,在80℃至160℃的温度下,在液相的停留时间小于20分钟,并具有高度的回混,同时保持 反应混合物中丙烯的含量小于液相的1重量%,其中全部或部分丙烯,一氧化碳和水或低级醇可以由这些材料成对形成的二元加成化合物代替。 在替代方案中,异丙基甲酸酯可以在氟化氢的存在下连续重排以产生异丁酸。
    • 8. 发明授权
    • Method for making isobutyric acid
    • 制备异丁酸的方法
    • US4452999A
    • 1984-06-05
    • US380609
    • 1982-05-21
    • Siegmund BeseckeGuenter SchroederHermann-Josef SiegertWolfgang Gaenzler
    • Siegmund BeseckeGuenter SchroederHermann-Josef SiegertWolfgang Gaenzler
    • C07C51/14C07C67/38
    • C07C51/14C07C67/38
    • What is disclosed is a continuous one-step method for the preparation of isobutyric acid or a lower alkyl ester thereof by the Koch synthesis, which method comprises reacting propylene, carbon monoxide, and water or a lower alcohol, in the gaseous and liquid phases, in the presence of hydrogen fluoride as a Koch catalyst, at a temperature between 80.degree. C. and 160.degree. C., at a dwell time of the liquid phase of less than 20 minutes, and with a high degree of backmixing, while maintaining the content of propylene in the reaction mixture at less than one percent by weight of the liquid phase, wherein all or part of the propylene, carbon monoxide, and water or lower alcohol can be replaced by binary addition compounds formed pairwise between these materials. In the alternative, isopropylformiate can be continuously rearranged in the presence of hydrogen fluoride to produce isobutyric acid.
    • 所公开的是通过Koch合成制备异丁酸或其低级烷基酯的连续一步法,该方法包括在气相和液相中使丙烯,一氧化碳和水或低级醇反应, 在作为Koch催化剂的氟化氢的存在下,在80℃至160℃的温度下,在液相的停留时间小于20分钟,并具有高度的回混,同时保持 反应混合物中丙烯的含量小于液相的1重量%,其中全部或部分丙烯,一氧化碳和水或低级醇可以由在这些材料之间成对形成的二元加成化合物代替。 在替代方案中,异丙基甲酸酯可以在氟化氢的存在下连续重排以产生异丁酸。