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    PROCESS FOR PREPARING NEOPENTYL GLYCOL
    3.
    发明申请
    PROCESS FOR PREPARING NEOPENTYL GLYCOL 审中-公开
    制备NEOPYYY GLYCOL的方法

    公开(公告)号：US20130053534A1

    公开(公告)日：2013-02-28

    申请号：US13588661

    申请日：2012-08-17

    申请人： Helmut Kronemayer ,  Kai Stehmeier ,  Ralf Edinger ,  Stefan Rittinger ,  Michael Steiniger

    发明人： Helmut Kronemayer ,  Kai Stehmeier ,  Ralf Edinger ,  Stefan Rittinger ,  Michael Steiniger

    IPC分类号： C07C29/141 ,  B01D3/34 ,  C08G63/02 ,  B01D3/14

    CPC分类号： C07C29/80 ,  B01D3/322 ,  B01D3/42 ,  C07C29/88 ,  C07C31/20

    摘要： A process for distilling an aqueous NPG mixture comprising NPG, a tertiary amine, water and the adduct of tertiary amine and formic acid (amine formate), said distillation being performed in a distillation column, which comprises drawing off a gaseous stream in the upper region of the column and feeding it to two condensers connected in series, the first condenser being operated in such a way that a portion of the gaseous stream is condensed in the first condenser and the second condenser being operated in such a way that the uncondensed portion of the gaseous stream is essentially fully condensed in the second condenser, the condensed stream from the first condenser being recycled fully or partly as reflux into the column.

    摘要翻译： 蒸馏含有NPG，叔胺，水和叔胺和甲酸（甲酸胺）的加合物的NPG混合物的方法，所述蒸馏在蒸馏塔中进行，其包括在上部区域中除去气流 并将其供给到串联连接的两个冷凝器，第一冷凝器以这样的方式操作，使得一部分气流在第一冷凝器中冷凝，并且第二冷凝器以这样的方式操作，使得未冷凝的部分 气态物质基本上在第二冷凝器中完全冷凝，来自第一冷凝器的冷凝物流全部或部分回收进塔。

    PROCESS FOR PREPARING NEOPENTYL GLYCOL
    4.
    发明申请
    PROCESS FOR PREPARING NEOPENTYL GLYCOL 审中-公开
    制备NEOPYYY GLYCOL的方法

    公开(公告)号：US20120271029A1

    公开(公告)日：2012-10-25

    申请号：US13446631

    申请日：2012-04-13

    申请人： Helmut Kronemayer ,  Michael Steiniger ,  Eva Kretzschmar ,  Norbert Asprion ,  Marcus Bechtel

    发明人： Helmut Kronemayer ,  Michael Steiniger ,  Eva Kretzschmar ,  Norbert Asprion ,  Marcus Bechtel

    IPC分类号： C08G63/00 ,  C07C29/74 ,  C07C45/78

    CPC分类号： C07C45/75 ,  C07C29/141 ,  C07C45/82 ,  C07C47/19 ,  C07C31/20

    摘要： The present invention relates to a process for preparing hydroxypivalaldehyde (HPA), which comprises in a first stage reacting isobutyraldehyde with formaldehyde in the presence of a tertiary amine and in a second stage introducing the reaction output obtained from the first stage into a stripping column. The present application further relates to a process for preparing neopentyl glycol (NPG) by hydrogenating the hydroxypivalaldehyde prepared in accordance with the invention and the further conversion of the NPG thus obtained to polyester resins, unsaturated polyester resins, lubricants or plasticizers.

    摘要翻译： 本发明涉及一种制备羟基新戊醛（HPA）的方法，该方法包括在叔胺存在下使异丁醛与甲醛反应的第一阶段，并在第二阶段将从第一阶段得到的反应产物引入汽提塔。 本申请还涉及通过氢化根据本发明制备的羟基新戊醛和进一步将由此获得的NPG转化成聚酯树脂，不饱和聚酯树脂，润滑剂或增塑剂来制备新戊二醇（NPG）的方法。

    Purification of carboxylic esters by extractive distillation
    5.
    发明授权
    Purification of carboxylic esters by extractive distillation 失效
    通过萃取蒸馏纯化羧酸酯

    公开(公告)号：US08436203B2

    公开(公告)日：2013-05-07

    申请号：US13087844

    申请日：2011-04-15

    申请人： Helmut Kronemayer ,  Ellen Dahlhoff ,  Andreas Lanver

    发明人： Helmut Kronemayer ,  Ellen Dahlhoff ,  Andreas Lanver

    IPC分类号： C07C67/54

    CPC分类号： C07C67/54 ,  C07C69/06

    摘要： In a process for purifying carboxylic esters such as ethyl formate, a carboxylic ester to be purified is distilled in the presence of an extractant, preferably by (a) allowing vapor of the carboxylic ester to be purified to ascend in a distillation column; (b) conveying the extractant in countercurrent to the vapor in an extractive distillation column; (c) taking off pure carboxylic ester above the extractive distillation zone. The extractant is, for example, selected from among diols, polyols, open-chain or cyclic amides.

    摘要翻译： 在纯化羧酸酯如甲酸乙酯的方法中，在提取剂的存在下蒸馏待纯化的羧酸酯，优选通过（a）使羧酸酯的蒸气在蒸馏塔中进行提纯; （b）在萃取蒸馏塔中与蒸气逆流输送萃取剂; （c）在萃取蒸馏区之上除去纯的羧酸酯。 萃取剂例如选自二醇，多元醇，开链或环状酰胺。

    Process for preparing carboxylic esters by reactive distillation
    7.
    发明授权
    Process for preparing carboxylic esters by reactive distillation 失效
    通过反应蒸馏制备羧酸酯的方法

    公开(公告)号：US08455676B2

    公开(公告)日：2013-06-04

    申请号：US13088822

    申请日：2011-04-18

    申请人： Helmut Kronemayer ,  Ellen Dahlhoff ,  Andreas Lanver

    发明人： Helmut Kronemayer ,  Ellen Dahlhoff ,  Andreas Lanver

    IPC分类号： C07C67/02

    CPC分类号： C07C67/03 ,  B01D3/009 ,  Y02P20/127 ,  C07C69/06

    摘要： In a process for preparing carboxylic esters by transesterification, a first feed stream comprising a first carboxylic ester, e.g. methyl formate, is introduced laterally into a reaction column at least one first feed point located between top and bottom of the reaction column and a second feed stream comprising a first alcohol, e.g. ethanol, is introduced laterally into the reaction column at a second feed point located above the first feed point and are reacted in a reaction zone of the reaction column to form a second carboxylic ester and a second alcohol. The first alcohol has a higher molecular weight than the second alcohol. A product fraction comprising the second carboxylic ester and unreacted first carboxylic ester is taken off at an offtake point located above the second feed point. At the bottom of the reaction column, a bottom fraction comprising the second alcohol and unreacted first alcohol is taken off. The product fraction is separated by distillation at a pressure which is different from the pressure in the reaction column into second carboxylic ester and a fraction comprising unreacted first carboxylic ester and the fraction comprising unreacted first carboxylic ester is at least partly recirculated to the reaction zone.

    摘要翻译： 在通过酯交换制备羧酸酯的方法中，第一进料流包含第一羧酸酯，例如 甲酸甲酯在反应塔中横向引入位于反应塔顶部和底部之间的至少一个第一进料点和第二进料流，所述第二进料流包含第一醇。 乙醇，在位于第一进料点上方的第二进料点侧向引入反应塔中，并在反应塔的反应区中反应形成第二个羧酸酯和第二个醇。 第一种醇的分子量比第二种醇高。 包含第二羧酸酯和未反应的第一羧酸酯的产物级分在位于第二进料点上方的出料点处脱出。 在反应塔的底部，除去包含第二醇和未反应的第一醇的底部馏分。 通过在不同于反应塔中的压力的​​压力下将产物馏分分离成第二羧酸酯，并且包含未反应的第一羧酸酯的馏分和包含未反应的第一羧酸酯的馏分至少部分地再循环到反应区。