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    • 1. 发明申请
    • PROCESS FOR PRODUCING ACETIC ACID
    • 生产乙酸的方法
    • WO2006068157B1
    • 2006-11-02
    • PCT/JP2005023420
    • 2005-12-14
    • DAICEL CHEMKOJIMA HIDETAKA
    • KOJIMA HIDETAKA
    • C07C51/12C07C53/08
    • C07C51/02C07C53/08
    • A process for producing a carboxylic acid comprises allowing an alcohol having a carbon number of "n" to continuously react with carbon monoxide in. the presence of a carbonylation catalyst system, and a limited amount of water, continuously withdrawing the reaction mixture from the reaction system 1, introducing the withdrawn reaction mixture into a distillation step (distillation columns 3a and 3b), and separating a higher-boiling component and a lower-boiling component containing a carboxylic acid having a carbon number of "n+1", respectively. In the process, the amount of carbon monoxide and/or hydrogen contained in a liquid phase of the reaction system is adjusted to at least one of the following conditions (i) and (ii): (i) the amount of carbon monoxide relative to 1 kilogram of the liquid phase by weight is at least 2 mmol per 1 MPa of carbon monoxide partial pressure of the reaction system, and (ii) the amount of hydrogen relative to 1 kilogram of the liquid phase by weight is at least 50 mmol per 1 MPa of hydrogen partial pressure of the reaction system. Such a process inhibits deactivation of a metal catalyst and deterioration in a reaction rate, and decreases formation of by-products in producing a carboxylic acid under a low water content.
    • 一种制备羧酸的方法包括在羰基化催化剂体系和有限量的水的存在下,使碳数为“n”的醇与一氧化碳连续反应,连续地从反应中取出反应混合物 系统1,将抽出的反应混合物引入蒸馏步骤(蒸馏塔3a和3b)中,分别分离含有碳数为“n + 1”的羧酸的高沸点组分和低沸点组分。 在此过程中,将反应体系的液相中所含的一氧化碳和/或氢的量调节至以下条件(i)和(ii)中的至少一个:(i)一氧化碳相对于 1千克液相重量比为每1MPa反应体系的一氧化碳分压至少2毫摩尔,和(ii)相对于1千克液相重量的氢的量为至少50毫摩尔/ 1MPa的氢分压反应体系。 这种方法抑制金属催化剂的失活和反应速度的劣化,并且在低水含量下生产羧酸时减少副产物的形成。
    • 3. 发明申请
    • PROCESS FOR PRODUCING CARBOXYLIC ACID AND SYSTEM FOR PRODUCING THE SAME
    • 生产羧酸的方法及其制备方法
    • WO2004033407A3
    • 2005-02-24
    • PCT/JP0312696
    • 2003-10-03
    • DAICEL CHEMHORIGUCHI AKIRAINA TOMOHIDEMIURA HIROYUKI
    • HORIGUCHI AKIRAINA TOMOHIDEMIURA HIROYUKI
    • B01D3/14C07B61/00C07C51/12C07C51/44C07C53/08C07C53/122C07C53/124
    • C07C51/12C07C51/44C07C53/08C07C53/122
    • In the presence of a catalytic system, an alcohol having "n" carbon atom(s) or a derivative thereof is allowed to react with carbon monoxide in a reactor 3 continuously, a higher by catalyst component is separated from the resultant reaction mixture by a catalyst-separating column 5 to give a crude mixture, the crude mixture is fed to a higher by component-separation column 8 to separate an overhead fraction from a bottom fraction containing at least a carboxylic acid having "n+2" carbon atoms, the overhead fraction is fed to a carboxylic acid-separating column 11, and are distilled in the presence of at least water and an ester of the carboxylic acid with the alcohol to separate a overhead fraction containing at least the ester and water from a bottom fraction containing the carboxylic acid having "n+l" carbon atoms. The overhead fraction from the carboxylic acid-separating column is fed to an aldehyde-separating column 14 to remove an overhead fraction containing an aldehyde. Such a process insures that impurities are efficiently separated from a reaction mixture by carbonylation of an alcohol, and that a carboxylic acid is purified easily at a lower cost.
    • 在催化体系的存在下,使具有“n”个碳原子的醇或其衍生物的醇连续地与反应器3中的一氧化碳反应,通过催化剂组分将较高的催化剂组分与所得反应混合物分离 催化剂分离塔5以得到粗混合物,粗混合物通过组分分离塔8进料到较高的分离塔8中,以分离塔塔馏分与至少含有“n + 2”碳原子的羧酸的塔底级分, 将塔顶馏分进料到羧酸分离塔11中,并在至少水和羧酸的​​酯存在下与醇蒸馏,以从含有至少含有酯和水的塔底馏分分离含有 具有“n + 1”个碳原子的羧酸。 将来自羧酸分离塔的塔顶馏分进料到醛分离塔14以除去含有醛的塔顶馏分。 这样的方法确保通过醇的羰基化有效地将杂质与反应混合物分离,并且以较低的成本容易地纯化羧酸。
    • 8. 发明申请
    • METHOD OF MANUFACTURING SUBSTANCES BY SUPERCRITICAL FLUID CHROMATOGRAPHY
    • 超临界液相色谱法制备物质的方法
    • WO2010005122A3
    • 2010-04-01
    • PCT/JP2009068544
    • 2009-10-22
    • DAICEL CHEMMIYAZAWA KENICHIROISHIGURO TAKESHI
    • MIYAZAWA KENICHIROISHIGURO TAKESHI
    • G01N30/34B01D15/40
    • G01N30/34B01D15/166B01D15/40G01N30/84
    • Provided is a method of manufacturing target substances with use of supercritical fluid chromatography, by which the following are achieved: increase in throughput of samples containing the target substances; an increase of a treatment amount of separation per unit time; and improvement of efficiency in separation. The method includes the steps of : injecting the sample containing the target substances into a mobile phase; and returning the composition of the mobile phase to a pre-change state after changing the composition of the mobile phase. The steps of changing the composition of the mobile phase and returning it to its pre-change state are performed during a period of time between detection of the peak of the last target substance of interest to elute from the column and injection of the next sample.
    • 提供了使用超临界流体色谱法制造目标物质的方法,通过该方法实现以下目的:增加含有目标物质的样品的通过量; 每单位时间处理量的增加; 并提高分离效率。 该方法包括以下步骤:将含有目标物质的样品注入流动相中; 并且在改变流动相的组成之后将流动相的组成返回到预改变状态。 改变流动相的组成并将其返回到其预变化状态的步骤是在检测最后一个目标物质的峰值从色谱柱洗脱出来并在下一个样品的注入之间的一段时间内进行的。