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    Process for the continuous preparation of dialkyl carbonates
    1.
    发明授权
    Process for the continuous preparation of dialkyl carbonates 失效
    连续制备碳酸亚铁的方法

    公开(公告)号：US5231212A

    公开(公告)日：1993-07-27

    申请号：US936182

    申请日：1992-08-26

    申请人： Hans-Josef Buysch ,  Alexander Klausener ,  Reinhard Langer ,  Franz-Josef Mais

    发明人： Hans-Josef Buysch ,  Alexander Klausener ,  Reinhard Langer ,  Franz-Josef Mais

    IPC分类号： C07C68/06 ,  C07C69/96

    CPC分类号： C07C68/065

    摘要： Dialkyl carbonates can be prepared in a continuous manner by transesterification of ethylene carbonate or propylene carbonate with alcohols in the presence of a catalyst in a column equipped with packing or baffles, by passing the reactants in countercurrent such that the ethylene carbonate or propylene carbonate are metered into the upper part of the column and the alcohol is metered into the lower part of the column and the catalyst is arranged as a fixed bed in the column or is also metered into the upper part of the column in solution or suspension, the dialkyl carbonate formed, if appropriate as a mixture with alcohol, being removed at the top of the column and the ethylene glycol or propylene glycol formed from the ethylene carbonate or propylene carbonate being removed at the foot of the column, if appropriate together with the catalyst.

    摘要翻译： 碳酸二烷基酯可以通过使碳酸亚乙酯或碳酸亚丙酯与醇在催化剂存在下在装备有填料或挡板的塔中进行酯交换，通过使反应物逆流使得将碳酸亚乙酯或碳酸亚丙酯计量 进入塔的上部，并将醇计量到塔的下部，并将催化剂作为固定床排列在塔中，或者也以溶液或悬浮液计量加入塔的上部，碳酸二烷基酯 如果合适地与醇的混合物形成，则在塔的顶部除去乙烯或碳酸亚丙酯形成的乙二醇或丙二醇，如果与催化剂一起适当，则将其从塔底除去。

    Process for the continuous preparation of dialkyl carbonates
    2.
    发明授权
    Process for the continuous preparation of dialkyl carbonates 失效
    连续制备碳酸二烷基酯的方法

    公开(公告)号：US5359118A

    公开(公告)日：1994-10-25

    申请号：US059489

    申请日：1993-05-10

    申请人： Paul Wagner ,  Franz-Josef Mais ,  Hans-Josef Buysch ,  Reinhard Langer ,  Alexander Klausener

    发明人： Paul Wagner ,  Franz-Josef Mais ,  Hans-Josef Buysch ,  Reinhard Langer ,  Alexander Klausener

    IPC分类号： B01J23/08 ,  C07C68/06 ,  C07C69/96

    CPC分类号： C07C68/065 ,  Y10S203/06

    摘要： Di-(C.sub.1 -C.sub.4 -alkyl) carbonates can be prepared by catalysed counter-current reesterification of ethylene glycol carbonate or propylene glycol carbonate with a C.sub.1 -C.sub.4 -alcohol in a column, ethylene glycol carbonate or propylene glycol carbonate being introduced into the upper part of the column and a dialkyl carbonate-containing C.sub.1 -C.sub.4 -alcohol being introduced into the central or lower part of the column and pure alcohol being additionally introduced below the introduction of the dialkyl carbonate-containing alcohol.

    摘要翻译： 二 - （C 1 -C 4 - 烷基）碳酸酯可以通过催化的乙二醇碳酸酯或丙二醇碳酸酯与柱中的C 1 -C 4醇的逆流再酯交换，乙二醇碳酸酯或丙二醇碳酸酯引入上层 将柱的一部分和含有二烷基碳酸酯的C 1 -C 4醇引入塔的中部或下部，并且在引入含二烷基碳酸酯的醇之外另外引入纯醇。

    Process for the preparation of alkylene carbonates
    3.
    发明授权
    Process for the preparation of alkylene carbonates 失效
    制备碳酸亚烷基酯的方法

    公开(公告)号：US5391767A

    公开(公告)日：1995-02-21

    申请号：US976877

    申请日：1992-11-16

    申请人： Franz-Josef Mais ,  Hans-Josef Buysch ,  Christine Mendoza-Frohn ,  Alexander Klausener

    发明人： Franz-Josef Mais ,  Hans-Josef Buysch ,  Christine Mendoza-Frohn ,  Alexander Klausener

    IPC分类号： B01J27/08 ,  C07B61/00 ,  C07D317/36 ,  C07D317/38 ,  C07D317/44 ,  C07D317/46 ,  C07D317/18

    CPC分类号： C07D317/38

    摘要： Alkylene carbonates can be prepared by catalytic reaction of alkylene oxides with carbon dioxide, catalysts which can be regenerated of the formulaa[MX]/b[ZnY.sub.2 ] (III)whereinM denotes an alkali metal,X and Y independently of one another denote chlorine, bromine or iodine anda and b denote fractions or integers in a range from 0.001 to 2being employed.The catalysts (III) can be regenerated by treating with a halogen compound. The halogen compounds which can be used for this purpose belong to the group comprising hydrogen halides, inorganic and organic acid halides, interhalogen compounds and organic halides with mobile halogen.

    摘要翻译： 碳酸亚烷基酯可以通过烯化氧与二氧化碳的催化反应制备，催化剂可以再生成式[MX] / b [ZnY 2]（III），其中M表示碱金属，X和Y彼此独立地表示 氯，溴或碘，a和b表示使用0.001至2范围内的分数或整数。 催化剂（III）可以通过用卤素化合物处理再生。 可以用于此目的的卤素化合物属于包含卤化氢，无机和有机酰卤，卤间化合物和具有可移动卤素的有机卤化物的基团。

    Process for the preparation of ethylene glycol carbonate
    4.
    发明授权
    Process for the preparation of ethylene glycol carbonate 失效
    制备乙二醇碳酸酯的方法

    公开(公告)号：US5350862A

    公开(公告)日：1994-09-27

    申请号：US984789

    申请日：1992-12-03

    申请人： Paul Wagner ,  Hans-Josef Buysch ,  Alexander Klausener ,  Franz-Josef Mais ,  Christine Mendoza-Frohn

    发明人： Paul Wagner ,  Hans-Josef Buysch ,  Alexander Klausener ,  Franz-Josef Mais ,  Christine Mendoza-Frohn

    IPC分类号： C07B61/00 ,  C07D317/38 ,  C07D317/36

    CPC分类号： C07D317/38

    摘要： A process is described for the catalytic preparation of ethylene glycol carbonate by reaction of ethylene oxide and CO.sub.2 in ethylene glycol carbonate as the reaction medium at elevated temperature and at elevated pressure with work-up by distillation to separate the resulting ethylene glycol carbonate from the catalyst. The process is carried out continuously under adiabatic temperature conditions. Per unit of time, ethylene glycol carbonate as reaction medium runs into the reactor in a amount 10 to 120 times that of ethylene glycol carbonate formed per unit of time. A CO.sub.2 excess over the other reaction partner ethylene oxide is maintained at all sites of the reactor. 80 to 98% by weight of the reaction mixture flowing out is returned to the inlet of the reactor, while the remainder is worked up by distillation to give ethylene glycol carbonate. The sensible heat produced in the reaction product as a result of the adiabatic temperature conditions, is used for the work-up.

    摘要翻译： 描述了通过环氧乙烷和CO 2在乙二醇碳酸酯中作为反应介质在升高的温度和升高的压力下反应制备乙二醇碳酸酯的方法，通过蒸馏进行后处理以将所得的乙二醇碳酸酯与催化剂分离 。 该过程在绝热温度条件下连续进行。 每单位时间，作为反应介质的乙二醇碳酸酯以每单位时间形成的乙二醇碳酸酯的量的10至120倍的量进入反应器。 在反应器的所有位置保持超过其他反应对象环氧乙烷的二氧化碳剩余量。 将流出的反应混合物的80〜98重量％返回到反应器的入口，其余部分通过蒸馏处理得到乙二醇碳酸酯。 作为绝热温度条件的结果，在反应产物中产生的显热用于后处理。

    Method for producing 4,6-dichloropyrimidine with sulfur compounds and phosphorus compounds
    7.
    发明授权
    Method for producing 4,6-dichloropyrimidine with sulfur compounds and phosphorus compounds 失效
    用硫化合物和磷化合物生产4,6-二氯嘧啶的方法

    公开(公告)号：US06525198B1

    公开(公告)日：2003-02-25

    申请号：US10069089

    申请日：2002-02-07

    申请人： Franz-Josef Mais ,  Alexander Klausener ,  Günther Cramm ,  Guido Steffan

    发明人： Franz-Josef Mais ,  Alexander Klausener ,  Günther Cramm ,  Guido Steffan

    IPC分类号： C07D23930

    CPC分类号： C07D239/30

    摘要： The invention relates to a method for the preparation of 4,6-dichloropyrimidine by reacting 4-chloro-6-methoxypyrimidine with at least one sulphur-containing chlorinating agent selected from the group consisting of SCl2, SOCl2, and SO2Cl2 in the presence of at least one phosphorus compound having the formula R3P═Yn  (1), in which R represents C1-C10-alkyl or C6-C10-aryl, each of which may optionally be substituted by up to five identical or different substituents selected from the group consisting of fluorine, chlorine, bromine, C1-C4-alkyl, and C1-C4-alkoxy, Y represents oxygen or sulphur, and n represents zero or 1.

    摘要翻译： 本发明涉及通过使4-氯-6-甲氧基嘧啶与至少一种选自SCl 2，SOCl 2和SO 2 Cl 2的含硫氯化剂在存在下进行反应来制备4,6-二氯嘧啶的方法 至少一种具有式（I）的磷化合物，其中R表示C 1 -C 10 - 烷基或C 6 -C 10 - 芳基，其各自可任选被至多五个相同或不同的选自氟，氯，溴，C1- C 4 - 烷基和C 1 -C 4 - 烷氧基，Y表示氧或硫，并且n表示0或1。