公开(公告)号：US20090076297A1

公开(公告)日：2009-03-19

申请号：US12283050

申请日：2008-09-09

申请人： Leonard Edward Bogan, JR. ,  Mark Anthony Silvano ,  Donald L. Zolotorofe

发明人： Leonard Edward Bogan, JR. ,  Mark Anthony Silvano ,  Donald L. Zolotorofe

IPC分类号： C07C67/30 ,  C07C51/347

CPC分类号： C07C51/02 ,  C07C51/377 ,  C07C59/08 ,  C07C59/01 ,  C07C59/10 ,  C07C57/04

摘要： A process for converting a salt of a hydroxycarboxylic acid to an unsaturated carboxylic acid, or esters thereof. The process involves converting an ammonium salt of a hydroxycarboxylic acid in aqueous solution to a corresponding hydroxycarboxylic acid and ammonium cation in aqueous solution; and separating the ammonium cation from the aqueous solution, leaving the hydroxycarboxylic acid in aqueous solution. The converting and separating steps may be accomplished by employing a hydrophobic acid or an acid ion exchange resin, each of which must have an acid dissociation constant, i.e., pKa, at least 0.5 less that that of the salt of the hydroxycarboxylic acid. Where a hydrophobic acid is used, it must be immiscible in water, and its salt must also be immiscible in water, and the resulting multi-phase solution comprises an aqueous phase comprising the corresponding hydroxycarboxylic acid, as well as a non-aqueous phase comprising a neutralized acid. Alternatively, where the ion exchange resin is used, the aqueous solution of the ammonium salt of a hydroxycarboxylic acid is contacted with the resin, thereby converting the salt to a hydroxycarboxylic acid and capturing the ammonium cations on the resin. In either case, the aqueous solution is treated, such as by heating, to separate and recover the hydroxycarboxylic acid. The non-aqueous phase or resin is treated to separate and recover ammonia useful for preparing additional ammonium salt of a hydroxycarboxylic acid.

摘要翻译： 将羟基羧酸盐转化为不饱和羧酸的方法或其酯。 该方法包括将羟基羧酸的铵盐在水溶液中转化为相应的羟基羧酸和铵阳离子在水溶液中; 并从铵水溶液中分离铵阳离子，使羟基羧酸在水溶液中。 转化和分离步骤可以通过使用疏水性酸或酸性离子交换树脂来实现，每个酸性离子交换树脂必须具有酸解离常数即pKa，与羟基羧酸的盐相比至少少0.5倍。 当使用疏水性酸时，其必须在水中不混溶，并且其盐也必须在水中不混溶，并且所得多相溶液包含含有相应的羟基羧酸的水相，以及包含 中和的酸。 或者，使用离子交换树脂时，羟基羧酸的铵盐的水溶液与树脂接触，由此将盐转化为羟基羧酸，并将铵阳离子捕获在树脂上。 在任一情况下，例如通过加热处理水溶液以分离和回收羟基羧酸。 处理非水相或树脂以分离和回收可用于制备羟基羧酸的另外的铵盐的氨。

公开(公告)号：US20100168472A1

公开(公告)日：2010-07-01

申请号：US12592182

申请日：2009-11-20

申请人： Leonard Edward Bogan, JR. ,  Mark Anthony Silvano

发明人： Leonard Edward Bogan, JR. ,  Mark Anthony Silvano

IPC分类号： C07C51/16 ,  C07C45/29

CPC分类号： C07C45/52 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04

摘要： The present invention relates to a process for producing acrolein by liquid phase dehydration of glycerol by preparing a mixture of a catalyst suspended in an organic solvent comprising one or more vinyl polymers and glycerol; and then mixing and heating the mixture to between 150° C. and 350° C. to dehydrate the glycerol and form acrolein. The vinyl polymers are selected from the group consisting of polyolefins, polystyrene, and mixtures thereof. The polyolefins may be polyethylene, polypropylene, polybutylene, polyisobutylene, polyisoprene, polypentene, or mixtures thereof. The acrolein may be subjected to vapor phase oxidation in the presence of a catalyst, such as a mixed metal oxide, to produce acrylic acid.

摘要翻译： 本发明涉及通过制备悬浮在包含一种或多种乙烯基聚合物和甘油的有机溶剂中的催化剂的混合物来制备丙烯醛的液相脱水制备丙烯醛的方法; 然后将混合物混合并加热至150℃至350℃，使甘油脱水并形成丙烯醛。 乙烯基聚合物选自聚烯烃，聚苯乙烯及其混合物。 聚烯烃可以是聚乙烯，聚丙烯，聚丁烯，聚异丁烯，聚异戊二烯，聚戊烯或其混合物。 丙烯醛可以在诸如混合金属氧化物的催化剂存在下进行气相氧化，以产生丙烯酸。