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公开(公告)号：US5892129A
公开(公告)日：1999-04-06
申请号：US859845
申请日：1997-05-21
IPC分类号： B01J31/08 , C07B61/00 , C07C41/48 , C07C41/50 , C07C41/54 , C07C41/56 , C07C43/315 , C07C43/30
摘要： A process for the preparation of 1,1,3-trialkoxypropane by acid-catalyzed reaction of acrolein with a C.sub.1 to C.sub.6 alcohol, which can be carried out well on a large scale and leads to a higher selectivity. The process involves (a) the reaction, in the presence of a solid acid catalyst which is insoluble in the reaction mixture, (b) a partial neutralization of the reaction mixture, using an amine or basic ion exchanger, and (c) specific recovery by distillation of the reaction mixture and recirculation of fractions containing useful materials; aqueous fractions containing recyclable useful materials are largely dehydrated by pervaporation prior to being recirculated.
摘要翻译： 通过丙烯醛与C1〜C6醇的酸催化反应制备1,1,3-三烷氧基丙烷的方法，其可以大规模良好地进行并导致更高的选择性。 该方法包括（a）在不溶于反应混合物的固体酸催化剂存在下的反应，（b）使用胺或碱式离子交换剂部分中和反应混合物，和（c）特定回收 通过蒸馏反应混合物和再循环含有有用材料的级分; 含有可回收有用物质的含水馏分在再循环之前通过渗透蒸发大部分脱水。
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公开(公告)号：US5705706A
公开(公告)日：1998-01-06
申请号：US681509
申请日：1996-07-23
申请人： Mathias Hoepp , Klaus Koehler , Dietrich Arntz
发明人： Mathias Hoepp , Klaus Koehler , Dietrich Arntz
IPC分类号： B01J31/02 , C07B61/00 , C07C45/75 , C07C47/277 , C07C45/61
CPC分类号： C07C45/75
摘要： 2-(Alkoxymethyl)acrolein of the formula ##STR1## is produced from acrolein, an alcohol ROH and formaldehyde, in one step, with a good yield being obtained. The acrolein is reacted with a substantially equimolar quantity of a source of formaldehyde in the presence of at least an equimolar quantity of the alcohol ROH and a catalytic quantity of a catalyst system based on a secondary amine and a mineral acid at a pH value of the reaction mixture in the range of 1 to less than 7.
摘要翻译： 式（IMAGE）的2-（烷氧基甲基）丙烯醛由丙烯醛，醇ROH和甲醛一步制备，得到良好的收率。 在至少等摩尔量的ROH和催化量的基于仲胺和无机酸的催化剂体系的存在下，丙烯醛与基本上等摩尔量的甲醛源反应，pH值为 反应混合物的范围为1至小于7。
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公开(公告)号：US5216179A
公开(公告)日：1993-06-01
申请号：US801930
申请日：1991-12-03
IPC分类号： C07B61/00 , C07D317/20 , C07D319/04 , C07D319/06
CPC分类号： C07D319/06 , C07D317/20
摘要： Mixed cyclic acrolein glycerol acetals can be obtained by reacting acrolein with glycerol in the presence of a solid acidic catalyst and by a distillation workup in a higher space-time yield and in very high selectivity in comparison to the state of the art if the reaction is carried out in the presence of the reaction mixture as solvent, which mixture consists essentially of acrolein, glycerol, cyclic acrolein glycerol acetals and water, and in the absence of heterogeneous solvents and, to the extent necessary, the reaction mixture freed of catalyst is compounded prior to being worked up by distillation with such an amount of pH-increasing substance that it exhibits a pH in a range of 4.5 to 7 in tenfold dilution with water. The reaction preferably takes place at 10.degree. to 30.degree. C. using strongly acidic organic or inorganic ion exchangers.
摘要翻译： 混合的环状丙烯醛甘油缩醛可以通过在固体酸性催化剂的存在下使丙烯醛与甘油反应并通过蒸馏处理以更高的时空产率和非常高的选择性与本领域技术人员相比，如果反应是 在作为溶剂的反应混合物存在下进行，该混合物基本上由丙烯醛，甘油，环丙烯醛甘油缩醛和水组成，并且在不存在多相溶剂的情况下，并且在必要的程度上，将除去催化剂的反应混合物混合 在用这种一定量的pH增加物质进行蒸馏处理之前，其在pH为4.5至7的范围内，用水稀释10倍。 反应优选使用强酸性有机或无机离子交换剂在10℃至30℃下进行。
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公开(公告)号：US5688973A
公开(公告)日：1997-11-18
申请号：US523339
申请日：1995-09-05
IPC分类号： B01J31/10 , C07B61/00 , C07D317/12
CPC分类号： C07D317/12
摘要： Process for the production of 2-vinyl-1,3-dioxolane reacting acrolein with ethylene glycol in the presence of a solid, acidic catalyst and recovery of the reaction mixture. Selectivity may be increased in comparison with known prior art processes by performing the reaction in the presence of a solid acidic catalyst at a temperature of below 50.degree. C.; the reaction mixture, from which the catalyst has been removed, is treated by extraction using an organic solvent which substantially does not dissolve ethylene glycol and has a boiling point of above 130.degree. C.; the two phases obtained on extraction are treated for recovery by distillation and recovered educts and the organic solvent are recycled.
摘要翻译： 在固体酸性催化剂存在下，用乙二醇生产2-乙烯基-1,3-二氧戊环的方法，回收反应混合物。 与已知的现有技术方法相比，通过在低于50℃的温度下在固体酸性催化剂存在下进行反应可以增加选择性; 已经除去催化剂的反应混合物通过萃取使用基本上不溶解乙二醇并且沸点高于130℃的有机溶剂进行处理。 萃取后得到的两相进行蒸馏回收处理，回收出去，并回收有机溶剂。
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