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    PROCESS FOR PREPARING ISOCYANATES BY THERMAL DISSOCIATION OF CARBAMATES
    3.
    发明申请
    PROCESS FOR PREPARING ISOCYANATES BY THERMAL DISSOCIATION OF CARBAMATES 失效
    通过热分解碳酸酯制备异氰酸酯的方法

    公开(公告)号：US20110178329A1

    公开(公告)日：2011-07-21

    申请号：US13008457

    申请日：2011-01-18

    申请人： Michael BOCK ,  Axel Franzke ,  Robert Baumann ,  Eckhard Stroefer

    发明人： Michael BOCK ,  Axel Franzke ,  Robert Baumann ,  Eckhard Stroefer

    IPC分类号： C07C263/04

    CPC分类号： C07C263/04 ,  C07C265/14

    摘要： The invention relates to a process for preparing isocyanates by thermal dissociation of carbamates and separation by distillation of the reaction mixture from the carbamate dissociation, comprising the corresponding isocyanate and the corresponding alcohol, by distillation in a column (K) having an enrichment section (V) and a stripping section (A), where the carbamate (1) is introduced between the enrichment section (V) and the stripping section (A) and the isocyanate is taken off as a constituent of the bottom stream (2) and the alcohol is taken off as a constituent of the overhead stream (3) from the column (K), in the presence of an inert solvent, wherein an intermediate boiler having a boiling point between the boiling point of the isocyanate and the boiling point of the alcohol under the operating conditions of the carbamate dissociation is used as inert solvent and is fed as external runback (4) in liquid form in a purity of >95% by weight, based on the total weight of the external runback (4), in the upper region of the enrichment section (V) and as gaseous, superheated stream (5) into the lower region of stripping section (A) at one or more points.

    摘要翻译： 本发明涉及一种通过氨基甲酸酯的热解解制备异氰酸酯的方法，并且通过在具有富集部分（V）的塔（K）中蒸馏，将反应混合物从氨基甲酸酯解离（包括相应的异氰酸酯和相应的醇）中蒸馏分离 ）和汽提段（A），其中将氨基甲酸酯（1）引入富集部分（V）和汽提部分（A）之间，异氰酸酯作为底部流（2）的组分和醇 在惰性溶剂的存在下从柱（K）中作为塔顶馏出物（3）的组分脱去，其中沸点介于异氰酸酯的沸点和醇的沸点之间的中间锅炉 在氨基甲酸酯解离的操作条件下，将其作为惰性溶剂使用，并作为外部回流（4）以> 95％重量的液体形式供给，基于外加剂的总重量 （4），在富集部分（V）的上部区域和作为气体的过热流（5）在一个或多个点处进入汽提段（A）的下部区域。

    Process for coproducing di- and/or polyisocyanates and glycols
    6.
    发明授权
    Process for coproducing di- and/or polyisocyanates and glycols 有权
    共聚产生二 - 和/或多异氰酸酯和二醇的方法

    公开(公告)号：US09000213B2

    公开(公告)日：2015-04-07

    申请号：US13502763

    申请日：2010-10-27

    申请人： Michael Bock ,  Robert Baumann ,  Axel Franzke ,  Eckhard Stroefer ,  Gerhard Theis

    发明人： Michael Bock ,  Robert Baumann ,  Axel Franzke ,  Eckhard Stroefer ,  Gerhard Theis

    IPC分类号： C07C263/04 ,  C07C29/12 ,  C07C29/128 ,  C07C68/06

    CPC分类号： C07C263/04 ,  C07C29/12 ,  C07C29/128 ,  C07C68/065 ,  C07C2601/14 ,  C07C69/96 ,  C07C265/12 ,  C07C265/14 ,  C07C31/202

    摘要： A process for coproducing di- and/or polyisocyanates and glycols, comprising process stages A, B, C and E for preparing glycols and process stages A, C, D, E, F and G for preparing di- and/or polyisocyanates,which comprises accomplishing the material coupling via the separation of the reaction mixture obtained in process stage A into process stages B and C, by in process stage A, reacting an aqueous alkylene oxide with carbon dioxide to give a reaction mixture comprising alkylene carbonate, hydrolyzing a portion of the alkylene carbonate-comprising reaction mixture obtained in process stage A to glycol in process stage B, dewatering the remaining alkylene carbonate-comprising stream of the reaction mixture from process stage A in process stage C, in process stage D, synthesizing amine by hydrogenating an aromatic nitro compound or a nitrile, in process stage E, transesterifying the dewatered alkylene carbonate-comprising mixture from process stage C with a monohydroxy alcohol to give the corresponding dialkyl carbonate, obtaining glycol as a coproduct, in process stage F, reacting the dialkyl carbonate-comprising reaction mixture obtained in process stage E with the amine obtained in process stage D to a mixture comprising the corresponding mono-, di- and/or polycarbamate, which in process stage G is cleaved to obtain the corresponding di- and/or polyisocyanate.

    摘要翻译： 用于共混生产二 - 和/或多异氰酸酯和二醇的方法，包括制备二元醇和工艺阶段A，C，D，E，F和G的制备二 - 和/或多异氰酸酯的工艺阶段A，B，C和E， 包括通过在工艺阶段A中将经处理阶段A获得的反应混合物分离成工艺阶段B和C来实现材料偶联，使环氧烷水溶液与二氧化碳反应，得到包含碳酸亚烷基酯的反应混合物，水解部分 在工艺阶段B中获得的含碳酸亚烷基酯的反应混合物在工艺阶段B中与二醇的混合物，在工艺阶段D中将来自反应混合物的剩余的含有碳酸亚烃的物流从工艺阶段C脱水，通过氢化合成胺 芳香族硝基化合物或腈，在工艺阶段E中，将来自工艺阶段C的脱水的含碳酸亚烷基酯混合物与单羟基醇酯交换，得到 相应的碳酸二烷基酯，在工艺阶段F中获得二醇作为副产物，将在工艺阶段E中获得的含碳酸二烷基酯的反应混合物与在工艺阶段D中获得的胺反应到包含相应的单 - ，二 - 和/ 或聚氨酯，其在工艺阶段G被切割以获得相应的二 - 和/或多异氰酸酯。

    Process for preparing isocyanates by thermal dissociation of carbamates
    7.
    发明授权
    Process for preparing isocyanates by thermal dissociation of carbamates 失效
    通过氨基甲酸酯的热解制备异氰酸酯的方法

    公开(公告)号：US08680323B2

    公开(公告)日：2014-03-25

    申请号：US13008457

    申请日：2011-01-18

    申请人： Michael Bock ,  Axel Franzke ,  Robert Baumann ,  Eckhard Stroefer

    发明人： Michael Bock ,  Axel Franzke ,  Robert Baumann ,  Eckhard Stroefer

    IPC分类号： C07C263/04

    CPC分类号： C07C263/04 ,  C07C265/14

    摘要： The invention relates to a process for preparing isocyanates by thermal dissociation of carbamates and separation by distillation of the reaction mixture from the carbamate dissociation, comprising the corresponding isocyanate and the corresponding alcohol, by distillation in a column (K) having an enrichment section (V) and a stripping section (A), where the carbamate (1) is introduced between the enrichment section (V) and the stripping section (A) and the isocyanate is taken off as a constituent of the bottom stream (2) and the alcohol is taken off as a constituent of the overhead stream (3) from the column (K), in the presence of an inert solvent, wherein an intermediate boiler having a boiling point between the boiling point of the isocyanate and the boiling point of the alcohol under the operating conditions of the carbamate dissociation is used as inert solvent and is fed as external runback (4) in liquid form in a purity of >95% by weight, based on the total weight of the external runback (4), in the upper region of the enrichment section (V) and as gaseous, superheated stream (5) into the lower region of stripping section (A) at one or more points.

    摘要翻译： 本发明涉及一种通过氨基甲酸酯的热解解制备异氰酸酯的方法，并且通过在具有富集部分（V）的塔（K）中蒸馏，将反应混合物从氨基甲酸酯解离（包括相应的异氰酸酯和相应的醇）中蒸馏分离 ）和汽提段（A），其中将氨基甲酸酯（1）引入富集部分（V）和汽提部分（A）之间，异氰酸酯作为底部流（2）的组分和醇 在惰性溶剂的存在下从柱（K）中作为塔顶馏出物（3）的组分脱去，其中沸点介于异氰酸酯的沸点和醇的沸点之间的中间锅炉 在氨基甲酸酯解离的操作条件下，将其作为惰性溶剂使用，并作为外部回流（4）以> 95％重量的液体形式供给，基于外加剂的总重量 （4），在富集部分（V）的上部区域和作为气体的过热流（5）在一个或多个点处进入汽提段（A）的下部区域。

    PROCESS FOR COPRODUCING DI- AND/OR POLYISOCYANATES AND GLYCOLS
    8.
    发明申请
    PROCESS FOR COPRODUCING DI- AND/OR POLYISOCYANATES AND GLYCOLS 有权
    用于制备二 - 和/或多烯酸酯和甘油的方法

    公开(公告)号：US20120209024A1

    公开(公告)日：2012-08-16

    申请号：US13502763

    申请日：2010-10-27

    申请人： Michael Bock ,  Robert Baumann ,  Axel Franzke ,  Eckhard Stroefer ,  Gerhard Theis

    发明人： Michael Bock ,  Robert Baumann ,  Axel Franzke ,  Eckhard Stroefer ,  Gerhard Theis

    IPC分类号： C07C263/04

    CPC分类号： C07C263/04 ,  C07C29/12 ,  C07C29/128 ,  C07C68/065 ,  C07C2601/14 ,  C07C69/96 ,  C07C265/12 ,  C07C265/14 ,  C07C31/202

    摘要： A process for coproducing di- and/or polyisocyanates and glycols, comprising process stages A, B, C and E for preparing glycols and process stages A, C, D, E, F and G for preparing di- and/or polyisocyanates,which comprises accomplishing the material coupling via the separation of the reaction mixture obtained in process stage A into process stages B and C, by in process stage A, reacting an aqueous alkylene oxide with carbon dioxide to give a reaction mixture comprising alkylene carbonate, hydrolyzing a portion of the alkylene carbonate-comprising reaction mixture obtained in process stage A to glycol in process stage B, dewatering the remaining alkylene carbonate-comprising stream of the reaction mixture from process stage A in process stage C, in process stage D, synthesizing amine by hydrogenating an aromatic nitro compound or a nitrile, in process stage E, transesterifying the dewatered alkylene carbonate-comprising mixture from process stage C with a monohydroxy alcohol to give the corresponding dialkyl carbonate, obtaining glycol as a coproduct, in process stage F, reacting the dialkyl carbonate-comprising reaction mixture obtained in process stage E with the amine obtained in process stage D to a mixture comprising the corresponding mono-, di- and/or polycarbamate, which in process stage G is cleaved to obtain the corresponding di- and/or polyisocyanate.

    摘要翻译： 共聚产生二 - 和/或多异氰酸酯和二醇的方法，包括用于制备二元醇和工艺步骤A，C，D，E，F和G的制备二 - 和/或多异氰酸酯的方法阶段A，B，C和E， 包括通过在工艺阶段A中将经处理阶段A获得的反应混合物分离成工艺阶段B和C来实现材料偶联，使环氧烷水溶液与二氧化碳反应，得到包含碳酸亚烷基酯的反应混合物，水解部分 在工艺阶段B中获得的含碳酸亚烷基酯的反应混合物在工艺阶段B中与二醇的混合物，在工艺阶段D中将来自反应混合物的剩余的含有碳酸亚烃的物流从工艺阶段C脱水，通过氢化合成胺 芳香族硝基化合物或腈，在工艺阶段E中，将来自工艺阶段C的脱水的含碳酸亚烷基酯混合物与单羟基醇酯交换，得到 相应的碳酸二烷基酯，在工艺阶段F中获得二醇作为副产物，将在工艺阶段E中获得的含碳酸二烷基酯的反应混合物与在工艺阶段D中获得的胺反应到包含相应的单 - ，二 - 和/ 或聚氨酯，其在工艺阶段G被切割以获得相应的二 - 和/或多异氰酸酯。