Method For Producing A Xylylene Diamine
    91.
    发明申请
    Method For Producing A Xylylene Diamine 审中-公开
    生产二甲苯二胺的方法

    公开(公告)号:US20080214871A1

    公开(公告)日:2008-09-04

    申请号:US11814390

    申请日:2006-01-19

    IPC分类号: C07C211/27

    CPC分类号: C07C209/48 C07C211/27

    摘要: A process for preparing a xylylenediamine by heterogeneously catalyzed hydrogenation of a phthalonitrile, wherein the hydrogenation is carried out in the presence of a cobalt skeletal catalyst, of an alkali metal hydroxide and of an alcohol and/or ether as the solvent, at an absolute pressure in the range from 1 to 100 bar and a temperature in the range from 40 to 150° C.

    摘要翻译: 通过邻苯二甲腈的非均相催化氢化制备苯二甲胺的方法,其中氢化是在钴骨架催化剂存在下,碱金属氢氧化物和醇和/或醚作为溶剂在绝对压力下进行的 在1至100巴的范围内,温度在40至150℃的范围内。

    Method For Producing a Xylylenediamine
    92.
    发明申请
    Method For Producing a Xylylenediamine 审中-公开
    生产甲苯二胺的方法

    公开(公告)号:US20080154061A1

    公开(公告)日:2008-06-26

    申请号:US11816878

    申请日:2006-02-23

    IPC分类号: C07C211/07

    CPC分类号: C07C209/48 C07C211/27

    摘要: A process for preparing a xylylenediamine by heterogeneously catalyzed hydrogenation of a phthalonitrile, wherein the hydrogenation is carried out in the presence of a nickel catalyst, of water, of an alkali metal hydroxide and of an ether as a solvent, at an absolute pressure in the range from 1 to 100 bar, at a temperature in the range from 40 to 150° C. and without addition of ammonia.

    摘要翻译: 通过邻苯二甲腈的非均相催化氢化制备苯二甲胺的方法,其中氢化在镍催化剂存在下,水,碱金属氢氧化物和作为溶剂的醚作为溶剂在绝对压力下进行 范围为1至100巴,温度范围为40至150℃,不加氨。

    Method for producing aminoalkoxy benzylamines and aminoalkoxy benzonitriles as intermediates
    93.
    发明授权
    Method for producing aminoalkoxy benzylamines and aminoalkoxy benzonitriles as intermediates 有权
    制备氨基烷氧基苄胺和氨基烷氧基苯甲腈作为中间体的方法

    公开(公告)号:US07256312B2

    公开(公告)日:2007-08-14

    申请号:US10522614

    申请日:2003-07-18

    IPC分类号: C07C209/48 C07C253/30

    摘要: The invention relates to a process for preparing 4-[aminoalkoxy]benzylamines of the general formula (I) by catalytically hydrogenating 4-[aminoalkoxy]benzonitriles of the general formula (II) where, in the compounds of the general formulae I and II, R1 is C1-C8-alkylene, R2 and R3 are each independently C1-C8-alkyl or are joined to give a ring which may additionally contain a heteroatom, which comprises carrying out the hydrogenation at elevated pressure and elevated temperatures. The invention further relates to a process for preparing the intermediate (II).

    摘要翻译: 本发明涉及通过催化氢化通式(II)的4- [氨基烷氧基]苯甲腈制备通式(I)的4- [氨基烷氧基]苄胺的方法,其中在通式I和II的化合物中, R 1是C 1 -C 8 - 亚烷基,R 2和R 3 O 3 各自独立地为C 1 -C 8 - 烷基或连接,得到可另外含有杂原子的环,其包括在升高的压力下进行氢化并升高 温度。 本发明还涉及制备中间体(II)的方法。

    Method for removing 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine
    95.
    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
    96.
    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
    98.
    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
    100.
    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℃。