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    • 26. 发明授权
    • Method for making isobutyric acid or esters thereof
    • 制备异丁酸或其酯的方法
    • US4504675A
    • 1985-03-12
    • US436467
    • 1982-10-25
    • Siegmund BeseckeHermann-Josef SiegertGunter Schroder
    • Siegmund BeseckeHermann-Josef SiegertGunter Schroder
    • C07C67/38C07C51/00C07C51/14C07C53/124C07C67/00C07C69/22
    • C07C51/14C07C67/38
    • What is disclosed is a process for the continuous production of isobutyric acid or an alkyl ester thereof by the Koch synthesis, which process comprises reacting propylene, carbon monoxide, and water or an alkanol in the presence of hydrogen fluoride in at least one reaction space containing a liquid phase and a gas phase under high pressure, releasing said pressure at least partially, whereby a gas containing organic compounds from said synthesis evolves from said liquid phase, adding oxygen to said evolved gas and at least partially combusting the organic compounds contained therein, then contacting the evolved gas containing the at least partially combusted organic compounds with at least a portion of the water or alkanol to be reacted with said propylene and carbon monoxide, whereby at least a portion of said combusted organic compounds are absorbed by said water or alkanol, returning said water or alkanol containing the absorbed combusted organic compounds to said reaction space, and discharging any unabsorbed gas from the reaction system.
    • 所公开的是通过Koch合成连续生产异丁酸或其烷基酯的方法,该方法包括使丙烯,一氧化碳和水或链烷醇在氟化氢存在下在至少一个含有 在高压下的液相和气相,至少部分地释放所述压力,由此来自所述合成的含有有机化合物的气体从所述液相中放出,向所述放出的气体中加入氧气并且至少部分地燃烧其中所含的有机化合物, 然后将含有至少部分燃烧的有机化合物的进化气体与要与所述丙烯和一氧化碳反应的水或链烷醇的至少一部分接触,由此所述燃烧的有机化合物的至少一部分被所述水或链烷醇吸收 将含有所吸收的燃烧的有机化合物的所述水或链烷醇返回到所述反应空间, 并从反应系统排出任何未吸收的气体。
    • 27. 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。
    • 28. 发明授权
    • Suspension polymers based on methyl methacrylate
    • 基于甲基丙烯酸甲酯的悬浮聚合物
    • US5300601A
    • 1994-04-05
    • US801293
    • 1991-12-02
    • Siegmund BeseckeWilfried SchoenKarl-Ludwig Endlich
    • Siegmund BeseckeWilfried SchoenKarl-Ludwig Endlich
    • C08F2/02C08F2/18C08F4/28C08F4/32C08F4/38C08F20/10C08F20/14C08F4/36
    • C08F20/14
    • Suspension polymers ofa) from 80 to 100% by weight of methyl methacrylate andb) from 0 to 20% by weight of further monomers capable of undergoing free radical polymerization,are obtainable by polymerization at a temperature of from 100.degree. to 140.degree. C. which is virtually constant over the major part of the polymerization time by means of an initiator system consisting of two or more peroxide initiators I having different decomposition temperatures T at which in each case half of the initiator has decomposed after 1 hour, whereinthe initiator I.sub.min having the lowest decomposition temperature has a decomposition temperature T.sub.min of from 60.degree. to 100.degree. C.,the initiator I.sub.max having the highest decomposition temperature has a decomposition temperature T.sub.max of from 100.degree. to 140.degree. C., the difference between T.sub.max and T.sub.min is greater than 10.degree. C. and I.sub.max is a perketal of the general formula (1) ##STR1## where R.sup.1 and R.sup.2 are identical or different alkyl radicals of 1 to 5 carbon atoms and R.sup.1 and R.sup.2 may be bonded to form a 5-membered or 6-membered ring and R.sup.3 is tert-butyl or tert-amyl, andfurther initiators I.sub.n which, if desired, may be concomitantly used have decomposition temperatures T.sub.n of from T.sub.min to T.sub.max.
    • a)80至100重量%的甲基丙烯酸甲酯和b)0至20重量%的能够进行自由基聚合的其它单体的悬浮聚合物可通过在100-140℃的温度下聚合获得 其通过由两种或更多种具有不同分解温度T的过氧化物引发剂组成的引发剂体系在聚合时间的主要部分上几乎恒定,其中在每种情况下,引发剂的一半在1小时后分解,其中引发剂 具有最低分解温度的Imin具有60至100℃的分解温度Tmin,具有最高分解温度的引发剂Imax的分解温度Tmax为100-140℃,Tmax和Tmin之间的差 大于10摄氏度,而Imax为通式(1)(*化学结构*)(1)的庚缩醛,其中R1和R2相同 或不同的1至5个碳原子的烷基,并且R 1和R 2可以键合以形成5元或6元环,并且R 3是叔丁基或叔戊基,以及其它引发剂,其中如果需要,可以是 同时使用的分解温度Tn从Tmin到Tmax。
    • 30. 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。