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公开(公告)号：US5234883A
公开(公告)日：1993-08-10
申请号：US853281
申请日：1992-03-18
CPC分类号： B01J21/063 , B01J23/44 , B01J8/0278 , B01J8/0285 , C11C3/126 , B01J2208/00212 , B01J2208/00814 , B01J2208/00876
摘要： A catalyst for hardening unsaturated fatty acids obtained from the decomposition of fat is described, formed of an intimate mixture of titanium oxide and finely divided palladium metal, wherein the titanium oxide is pyrogenic titanium oxide obtained from titanium tetrachloride by flame hydrolysis.
摘要翻译： 描述了由脂肪分解获得的不饱和脂肪酸硬化催化剂，其由氧化钛和细碎的钯金属的紧密混合物形成，其中氧化钛是通过火焰水解由四氯化钛获得的热解二氧化钛。
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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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