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    Process for the continuous preparation of aryl carbonates
    1.
    发明授权
    Process for the continuous preparation of aryl carbonates 失效
    连续制备碳酸芳基酯的方法

    公开(公告)号：US5523451A

    公开(公告)日：1996-06-04

    申请号：US206575

    申请日：1994-03-04

    申请人： Johann Rechner ,  Norbert Schon ,  Paul Wagner ,  Hans-Josef Buysch ,  Stephan Kabelac

    发明人： Johann Rechner ,  Norbert Schon ,  Paul Wagner ,  Hans-Josef Buysch ,  Stephan Kabelac

    IPC分类号： B01J31/12 ,  B01J10/00 ,  B01J19/24 ,  C07B61/00 ,  C07C68/06 ,  C07C68/08 ,  C07C69/96

    CPC分类号： C07C68/06 ,  B01J19/0066 ,  B01J19/245 ,  B01J2219/00076 ,  B01J2219/00094 ,  B01J2219/00155 ,  B01J2219/00159 ,  B01J2219/00166 ,  B01J2219/00182

    摘要： Organic carbonates which contain at least one aromatic ester group can be obtained continuously from carbonates, which contain at least one aliphatic ester group, and a phenolic compound in the presence of a transesterification catalyst known per se in that the reaction is carried out in a bubble column reactor or in a cascade of at least two bubble column reactors in such a way that the phenolic compound is metered into the first bubble column and the carbonate containing at least one aliphatic ester group is metered into each individual bubble column, but preferably only into the last bubble column. The carbonate containing at least one aromatic ester group is taken off in the liquid state from the last bubble column. Volatile reaction products, for example eliminated alcohol or a dialkyl carbonate are taken off at the upper end of each individual bubble column, preferably at the upper end of the first bubble column.

    摘要翻译： 含有至少一个芳族酯基的有机碳酸酯可以在含有至少一种脂族酯基的碳酸酯和酚类化合物在本身已知的酯交换催化剂的存在下连续获得，因为反应在气泡中进行 塔式反应器或在至少两个鼓泡塔反应器的级联中，使得酚类化合物计量加入到第一气泡塔中，并且含有至少一个脂族酯基的碳酸酯计量加入每个单独的气泡塔中，但优选仅进入 最后一个气泡列。 含有至少一个芳族酯基的碳酸酯从最后一个气泡塔以液态取出。 挥发性反应产物，例如消除的醇或碳酸二烷基酯在每个单独的气泡塔的上端，优选在第一气泡塔的上端取出。

    Process for the continuous production of aryl carbonates
    2.
    发明授权
    Process for the continuous production of aryl carbonates 失效
    连续生产碳酸芳基酯的方法

    公开(公告)号：US5463102A

    公开(公告)日：1995-10-31

    申请号：US182867

    申请日：1994-01-18

    申请人： Norbert Schon ,  Johann Rechner ,  Paul Wagner ,  Hans-Josef Buysch ,  Hans-Erich Gasche ,  Ricarda Leiberich

    发明人： Norbert Schon ,  Johann Rechner ,  Paul Wagner ,  Hans-Josef Buysch ,  Hans-Erich Gasche ,  Ricarda Leiberich

    IPC分类号： C07B61/00 ,  C07C68/06 ,  C07C68/08 ,  C07C69/96

    CPC分类号： C07C68/06

    摘要： Organic carbonates containing at least one aromatic ester group can be obtained in a continuous manner from carbonates containing at least one aliphatic ester group and a phenolic compound in the presence of a transesterification catalyst known per se by carrying out the reaction in at least two stirred containers connected one behind the other in such a way that, in each case, the phenolic compound is metered in liquid form into the first stirred container and the carbonate containing at least one aliphatic ester group is metered in liquid form into one or more of the stirred containers. The carbonate containing at least one aromatic ester group is removed in liquid form from the last stirred container. Volatile reaction products, for example alcohol which has been cleaved out or a dialkyl carbonate are removed in gaseous form from one or more stirred containers.

    摘要翻译： 含有至少一个芳族酯基的有机碳酸酯可以在本体已知的酯交换催化剂存在下，通过在至少两个搅拌容器中进行反应，以含有至少一种脂肪族酯基和酚类化合物的碳酸酯连续获得 在每种情况下将酚类化合物以液体形式计量到第一搅拌容器中，并且将含有至少一种脂族酯基的碳酸酯以液体形式计量成一个或多个搅拌的 容器 含有至少一个芳族酯基的碳酸酯以液体形式从最后搅拌的容器中除去。 挥发性反应产物，例如已经被裂解的醇或碳酸二烷基酯从一种或多种搅拌容器中以气态形式除去。

    Process for preparing aromatic carbonates
    3.
    发明授权
    Process for preparing aromatic carbonates 失效
    制备芳族碳酸酯的方法

    公开(公告)号：US5284965A

    公开(公告)日：1994-02-08

    申请号：US25487

    申请日：1993-03-03

    申请人： Hans-Josef Buysch ,  Norbert Schon ,  Johann Rechner

    发明人： Hans-Josef Buysch ,  Norbert Schon ,  Johann Rechner

    IPC分类号： C07C68/06 ,  C07C69/96

    CPC分类号： C07C68/06

    摘要： A process is described for preparing aromatic carbonates by transesterification of aliphatic carbonates with phenolic compounds in the presence of titanium compounds known per se, in which, before work-up, the transesterification mixture is cooled to a temperature below 120.degree. C., during which the mixture must remain liquid, the titanium-containing precipitate which is deposited is separated off, and the aromatic carbonate is then obtained by methods which are conventional per se.

    摘要翻译： 描述了在本身已知的钛化合物存在下，通过脂族碳酸酯与酚类化合物的酯交换制备芳香族碳酸酯的方法，其中在处理之前，将酯交换反应混合物冷却到低于120℃的温度，在此期间 混合物必须保持液体，分离沉积的含钛沉淀物，然后通过本身常规的方法获得芳族碳酸酯。

    Process for working up the liquid reaction products from the cu-catalysed preparation of dimethyl carbonate
    5.
    发明授权
    Process for working up the liquid reaction products from the cu-catalysed preparation of dimethyl carbonate 失效
    从催化的碳酸二甲酯制备物中处理液体反应产物的方法

    公开(公告)号：US5550278A

    公开(公告)日：1996-08-27

    申请号：US340775

    申请日：1994-11-17

    申请人： Johann Rechner ,  Paul Wagner ,  Hans-Josef Buysch ,  Alexander Klausner

    发明人： Johann Rechner ,  Paul Wagner ,  Hans-Josef Buysch ,  Alexander Klausner

    IPC分类号： C07B61/00 ,  C07C68/00 ,  C07C68/08 ,  C07C69/96

    CPC分类号： C07C68/08 ,  C07C68/005

    摘要： A process is described for working up liquid reaction mixtures such as are formed during dimethyl carbonate preparation by oxidative carbonylation of methanol in the presence of a copper-containing catalyst, which process permits a simple separation of the water of reaction from the dimethyl carbonate. In this process, in a first distillation column, the water of reaction is taken from the bottom of the column; the top product from the first column is separated in a second column, under increased pressure, into dimethyl carbonate as bottom product and into a top product which is predominantly composed of methanol. The top product from the distillative working-up in the second column, which is predominantly composed of methanol, is recycled to the reaction process.

    摘要翻译： 描述了一种处理液体反应混合物的方法，所述液体反应混合物例如在碳酸二甲酯制备过程中通过在含铜催化剂的存在下氧化羰基化甲醇而形成，该方法允许将反应水从碳酸二甲酯简单分离。 在该方法中，在第一蒸馏塔中，反应水取自塔底; 来自第一塔的顶部产物在第二列中在增加的压力下分离成作为底部产物的碳酸二甲酯，并且成为主要由甲醇组成的顶部产物。 主要由甲醇组成的第二列馏出物的顶部产物被再循环到反应过程中。

    Process for the preparation of diaryl carbonates
    8.
    发明授权
    Process for the preparation of diaryl carbonates 失效
    制备碳酸二芳基酯的方法

    公开(公告)号：US5344954A

    公开(公告)日：1994-09-06

    申请号：US103936

    申请日：1993-08-06

    申请人： Norbert Schon ,  Hans-Josef Buysch ,  Paul Wagner ,  Reinhard Langer

    发明人： Norbert Schon ,  Hans-Josef Buysch ,  Paul Wagner ,  Reinhard Langer

    IPC分类号： C07B61/00 ,  C07C68/06 ,  C07C69/96

    CPC分类号： C07C68/06

    摘要： Diaryl carbonates are prepared from dialkyl carbonates and phenolic compounds by transesterification in the presence of a transesterification catalyst at 60.degree.-320.degree. C. in an apparatus composed of two columns in a continuous procedure. In the first column, the starting materials form essentially the associated alkyl aryl carbonate, from which, in the second column, the diaryl carbonate is produced by further transesterification and disproportionation.

    摘要翻译： 碳酸二芳基酯由碳酸二烷基酯和酚类化合物通过在酯交换催化剂存在下，在60-320℃下在连续方法中由两列组成的装置中制备。 在第一列中，起始材料基本上形成缔合的碳酸烷基芳基酯，在第二列中，通过进一步的酯交换和歧化产生碳酸二芳基酯。