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公开(公告)号：US4855515A
公开(公告)日：1989-08-08
申请号：US084716
申请日：1987-08-12
IPC分类号： C07C29/141 , C07C45/75
CPC分类号： C07C29/141 , C07C45/75
摘要： A method for producing neopentyl glycol is described using tertiaryamines as a catalyst for the condensation of isobutyraldehyde and formaldehyde followed by hydrogenation of the resulting reaction mixture using a manganese oxide promoted copper chromite catalyst.
摘要翻译： 使用叔胺作为用于缩合异丁醛和甲醛的催化剂，然后使用氧化锰促进的亚铬酸铜催化剂氢化所得反应混合物来描述新戊二醇的制备方法。
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公开(公告)号：US3975450A
公开(公告)日：1976-08-17
申请号：US502331
申请日：1974-09-03
IPC分类号： C07C29/00
CPC分类号： C07C29/00
摘要： Polyhydric alcohols are prepared by the aldol condensation of an aldehyde having 1 to 3 hydrogens on the alpha-carbon atom with formaldehyde in the presence of sodium carbonate and the subsequent crossed Cannizzaro reaction wherein the aldol condensation product is reacted with additional formaldehyde and sodium carbonate to form a polyhydric alcohol.
摘要翻译： 多元醇是通过在碳酸钠的存在下，在α碳原子上具有1至3个氢的醛与醛的醛醇缩合制备的，随后进行交叉的Cannizzaro反应，其中醛醇缩合产物与另外的甲醛和碳酸钠反应 形成多元醇。
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公开(公告)号：US3956406A
公开(公告)日：1976-05-11
申请号：US512826
申请日：1974-10-04
CPC分类号： C07C29/86
摘要： Trimethylolpropane prepared in alkali solution by the condensation of n-butyraldehyde and formaldehyde is purified by extraction of the trimethylolpropane from the process effluent with a first solvent and the subsequent addition of a second solvent to the extract to further reduce the content of water and alkali salts. The first solvent may be recovered from the trimethylolpropane containing mixture by a simple distillation. The remaining mixture of trimethylolpropane and the second solvent may be separated by settling and decanting. In a preferred embodiment isobutanol is the first solvent and xylene is the second solvent.
摘要翻译： 通过正丁醛和甲醛的缩合在碱溶液中制备的三羟甲基丙烷通过用第一溶剂从工艺流出物中提取三羟甲基丙烷并随后向萃取物中加入第二溶剂来进一步降低水和碱盐的含量 。 可以通过简单的蒸馏从含三羟甲基丙烷的混合物中回收第一种溶剂。 三羟甲基丙烷和第二溶剂的剩余混合物可以通过沉降和倾析分离。 在优选的实施方案中，异丁醇是第一溶剂，二甲苯是第二溶剂。
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公开(公告)号：US4038329A
公开(公告)日：1977-07-26
申请号：US632759
申请日：1975-11-17
CPC分类号： C07C31/20
摘要： Neopentyl glycol is recovered from an impure process stream by the steps of (1) extracting neopentyl glycol from the impure stream with an organic solvent or mixture of solvents, (2) flashing the neopentyl glycol solvent mixture in a thermosiphoning reboiler so as to separate the solvent from the neopentyl glycol under atmospheric conditions, and (3) refining the neopentyl glycol by atmospheric distillation.
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