Method for removing 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine
    53.
    发明授权
    Method for removing 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine 失效
    从含有6-氨基己腈,己二胺和六亚甲基二胺的混合物中除去6-氨基己腈的方法

    公开(公告)号:US06972075B2

    公开(公告)日:2005-12-06

    申请号:US10311376

    申请日:2001-06-13

    摘要: The invention relates to a method for removing, by distillation, 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine, by a) removing the hexamethylenediamine from the mixture while obtaining a mixture (I) that has a hexamethylenediamine content of less than 1 wt. -%, b) removing completely or partially the 6-aminocapronitrile from mixture (I) while obtaining a mixture (II) whose content in substances that have a higher boiling point as 6-aminocapronitrile under distillation conditions and that cannot be formed by dimerization reactions when 6-aminocapronitrile is thermally treated is less than 1 wt. -%, and c) completely or partially removing from mixture (II) the hexamethylenediamine that might be present while obtaining a mixture (IV) whose hexamethylenediamine content is higher than that of mixture (II), and a mixture (V) whose hexamethylenediamine content is lower than that of mixture (II).

    摘要翻译: 本发明涉及一种通过以下方法:从含有6-氨基己腈,己二腈和六亚甲基二胺的混合物中蒸馏除去6-氨基己腈,方法是a)从混合物中除去六亚甲基二胺,同时得到六亚甲基二胺含量少的混合物(I) 超过1wt。 - %,b)从混合物(I)中完全或部分地除去6-氨基己腈,同时得到其在蒸馏条件下具有较高沸点的物质中的含量为6-氨基己腈的混合物(II),并且不能通过二聚反应形成 当6-氨基己腈被热处理时小于1wt。 - %,和c)在获得六亚甲基二胺含量高于混合物(II)的混合物(Ⅳ)的同时,可能存在的六亚甲基二胺的混合物(II)完全或部分地除去,和(VI)的六亚甲基二胺含量 低于混合物(II)。

    Method for increasing yield in the production of polyvalent alcohols by splitting by-products containing acetal
    54.
    发明申请
    Method for increasing yield in the production of polyvalent alcohols by splitting by-products containing acetal 失效
    通过分解含缩醛的副产物来提高多元醇生产中产率的方法

    公开(公告)号:US20050256346A1

    公开(公告)日:2005-11-17

    申请号:US10521810

    申请日:2003-07-18

    摘要: The invention relates to a method for increasing yield in the production of polyvalent alcohols, especially trimethylolpropane, obtained by condensing formaldehyde with a higher aldehyde. According to the inventive method, acid treatment is carried out on a mixture (high-boiling fraction) that is obtained by reprocessing, contains derivatives of said alcohols and has a higher boiling point than the respective alcohol, and the polyvalent alcohol is recovered from the acid-treated high-boiling fraction. The inventive method is characterised in that the water content of the high-boiling fraction amounts to between 20 and 90 wt. % in relation to the entire mixture of the high-boiling fraction and water.

    摘要翻译: 本发明涉及通过将甲醛与较高级醛缩合而获得的多价醇,特别是三羟甲基丙烷的生产中提高产量的方法。 根据本发明的方法,通过后处理获得的含有所述醇的衍生物并且具有比各醇更高的沸点的混合物(高沸点馏分)进行酸处理,并且从所述醇中回收多元醇 酸处理的高沸点馏分。 本发明的方法的特征在于高沸点馏分的含水量在20-90wt。之间。 相对于高沸点馏分和水的整个混合物的%。

    Method for generating catalysts
    56.
    发明授权
    Method for generating catalysts 失效
    生成催化剂的方法

    公开(公告)号:US06905997B2

    公开(公告)日:2005-06-14

    申请号:US10380550

    申请日:2001-09-20

    摘要: A process is provided for the regeneration of a heterogeneous catalyst used for the preparation of compounds containing NH2 groups by the hydrogenation, with hydrogen, of compounds containing at least one unsaturated carbon-nitrogen bond, wherein a) the feed of the compound to be hydrogenated is stopped and b) the heterogeneous catalyst is treated with a compound of the formula R1R2N—CO—R3  (I), in which R1 is hydrogen or C1-C4 alkyl and R2, R3 independently of one another are each hydrogen or C1-C4 alkyl or together are a C3-C6 alkylene group, or mixtures of such compounds, at a pressure ranging from 0.1 to 30 MPa and a temperature ranging from 100 to 300° C., with the proviso that the compound of formula (I) is in liquid form during the treatment.

    摘要翻译: 提供了一种用于通过氢化含有至少一个不饱和碳 - 氮键的化合物再生用于制备含有NH 2基团的化合物的非均相催化剂的再生方法,其中a) 待氢化的化合物的进料停止,b)用式<β的化合物处理非均相催化剂。在线式描述=“In-line Formulas”end =“lead”→> (I),<?in-line-formula description =“In-line Formulas”end =“tail 其中R 1是氢或C 1 -C 4烷基,R 2,R 2,R 3, 各自独立地为氢或C 1 -C 4烷基,或者一起为C 3 -C 3 亚烷基或这些化合物的混合物,在0.1至30MPa的压力和100至300℃的温度范围内,条件是式(I)化合物为 液体 在治疗过程中形成。

    Process for preparing essentially formic acid-free N-alkyl-N′-methylalkyleneureas
    58.
    发明授权
    Process for preparing essentially formic acid-free N-alkyl-N′-methylalkyleneureas 有权
    基本上不含无甲酸的N-烷基-N'-甲基亚烷基脲的方法

    公开(公告)号:US06554966B1

    公开(公告)日:2003-04-29

    申请号:US09603195

    申请日:2000-06-26

    IPC分类号: B01D300

    CPC分类号: C07D239/10

    摘要: The invention relates to a process for preparing essentially formic acid-free N-alkyl-N′-methylalkyleneureas of the formula with R1=H or CH3, R2=CnH2n+1 with n=1-4 and x=0 or 1, from the corresponding alkyleneureas by reaction with monomeric or polymerized formaldehyde in the presence of formic acid. This entails feeding the mixture, obtained in the reaction, of N-alkyl-N′-methylalkyleneurea and formic acid to the upper region of a distillation column, distilling without further additions and removing essentially formic acid-free N-alkyl-N′-methylalkyleneurea in the lower region of the column. The process parameters are set so that the pressure in the upper region of the column is at a higher level than in the lower region of the column, and the difference in pressure between the upper and lower regions of the column is from 10 to 100 mbar, and the temperature in the lower region of the column is higher than in the upper region of the column, with the difference in temperature between the upper and lower regions of the column being from 40° C. to 210° C.

    摘要翻译: 本发明涉及一种制备基本上无甲酸的N-烷基-N'-甲基亚烷基脲的方法,其中R1 = H或CH3,R2 = CnH2n + 1,其中n = 1-4和x = 0或1, 通过在甲酸存在下与单体或聚合的甲醛反应来制备相应的亚烷基脲。 这需要将N-烷基-N'-甲基亚烷基脲和甲酸的反应混合物加入到蒸馏塔的上部区域,无需进一步添加即可蒸馏除去基本上不含甲酸的N-烷基-N'- 甲基亚烷基脲在柱的下部区域。 设定工艺参数使得塔的上部区域中的压力处于比塔的下部区域更高的水平,并且塔的上部和下部区域之间的压力差为10至100mbar ,塔的下部区域的温度高于塔的上部区域,塔的上部和下部区域之间的温度差为40℃〜210℃。

    Process for preparing amines
    59.
    发明授权
    Process for preparing amines 有权
    制备胺的方法

    公开(公告)号:US06525222B2

    公开(公告)日:2003-02-25

    申请号:US09729458

    申请日:2000-12-05

    IPC分类号: C07C20900

    摘要: Amines are prepared by reacting aldehydes or ketones at elevated temperature under elevated pressure with nitrogen compounds selected from the group of ammonia, primary and secondary amines, and with hydrogen in the presence of a catalyst, wherein the catalytically active mass of the catalyst contains, after its preparation and before the treatment with hydrogen, 22 to 45% by weight of oxygen-containing compounds of zirconium, calculated as ZrO2, 1 to 30% by weight of oxygen-containing compounds of copper, calculated as CuO, 5 to 50% by weight of oxygen-containing compounds of nickel, calculated as NiO, where the molar ratio of nickel to copper is greater than 1, 5 to 50% by weight of oxygen-containing compounds of cobalt, calculated as CoO, 0 to 5% by weight of oxygen-containing compounds of molybdenum, calculated as MoO3, and 0 to 10% by weight of oxygen-containing compounds of aluminum and/or manganese, calculated as Al2O3 or MnO2.

    摘要翻译: 通过使升高的温度下的醛或酮与选自氨,伯和仲胺的氮化合物和在催化剂存在下与氢气反应的醛或酮进行反应来制备胺,其中催化剂的催化活性物质含有 其制备方法和用氢处理之前,按重量计22%至45%的锆的氧含量化合物,按ZrO2计算,按重量计为CuO的含氧化合物为铜,按CuO计为5〜50% 按NiO计的含镍化合物的重量,其中镍与铜的摩尔比大于1.5至50重量%的以CoO计的含氧化合物的钴,0至5重量% 按MoO3计算的含氧化合物的钼和0至10重量%的按Al2O3或MnO2计算的含铝和/或锰的含氧化合物。

    Preparation of N-methyl-2-pyrrolidone (NMP)
    60.
    发明授权
    Preparation of N-methyl-2-pyrrolidone (NMP) 失效
    制备N-甲基-2-吡咯烷酮(NMP)

    公开(公告)号:US06348601B2

    公开(公告)日:2002-02-19

    申请号:US09774628

    申请日:2001-02-01

    IPC分类号: C07D207267

    CPC分类号: C07D207/267

    摘要: N-Methyl-2-pyrrolidone (NMP) is prepared by preparing a mixture comprising monomethylamine, dimethylamine and trimethylamine and ammonia in a first process step by reacting ammonia with methanol at elevated temperature in the presence of a catalyst, separating 10 off the ammonia, reacting the mixture comprising the methylamines with gamma-butyrolactone (&ggr;-BL), in a molar ratio of monomethylamine to &ggr;-BL of at least 1 in a second process step at elevated temperature and superatmospheric pressure, separating NMP and unreacted methylamines from the reaction product and returning unreacted methylamines to the first process step for reaction with methanol and ammonia.

    摘要翻译: 通过在第一工艺步骤中通过在升高的温度下在催化剂存在下使氨与甲醇反应制备包含单甲胺,二甲胺和三甲胺和氨的混合物来制备N-甲基-2-吡咯烷酮(NMP),从氨分离10, 在高温和超大气压下,在第二工艺步骤中使包含甲胺的混合物与γ-丁内酯(γ-BL)以一甲基胺与γ-BL的摩尔比至少为1的反应物反应,从反应中分离NMP和未反应的甲胺 产物并将未反应的甲胺返回到用于与甲醇和氨反应的第一工艺步骤。