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1. 发明授权

US4868334A Process for the production of anhydrous oxime from an aqueous solution 失效
标题翻译：从水溶液中生产无水肟的方法
公开(公告)号：US4868334A
公开(公告)日：1989-09-19
申请号：US217265
申请日：1988-07-11
申请人： Chempolil T. Mathew , Stephen E. Belsky , Earl E. McKnight
发明人： Chempolil T. Mathew , Stephen E. Belsky , Earl E. McKnight
IPC分类号： C07C249/14 , C07C251/38
CPC分类号： C07C249/14
摘要： The present invention provides a simple process for the production of anhydrous oxime by the separation of the oxime from an aqueous solution. The process is advantageous because the potential explosive hazards of current processes are eliminated and the oxime is easily separated from the aqueous phase. The process comprises the steps of:(a) vaporizing an aqueous oxime solution;(b) vaporizing a water-immiscible organic solvent for the oxime wherein the boiling point of the solvent is lower than the boiling point of the oxime;(c) combining the vapors together;(d) condensing the collected vapors;(e) removing the organic phase of the condensate from the aqueous phase; and(f) recovering anhydrous oxime from the removed organic phase.The anhydrous oxime produced by the present process if useful in applications such as isocyanate condensation and carbamate formation.
摘要翻译：本发明提供了通过从水溶液中分离肟而制备无水肟的简单方法。该方法是有利的，因为消除了当前方法的潜在爆炸危险，并且肟容易与水相分离。该方法包括以下步骤：（a）蒸发肟水溶液; （b）蒸发肟的与水不混溶的有机溶剂，其中溶剂的沸点低于肟的沸点; （c）将蒸汽结合在一起; （d）冷凝收集的蒸汽; （e）从水相中除去冷凝物的有机相; 和（f）从去除的有机相中回收无水肟。通过本方法生产的无水肟可用于异氰酸酯缩合和氨基甲酸酯形成等应用。

2. 发明授权

US4349418A Production of methylnaphthalenes and tar bases including indole 失效
标题翻译：生产甲基萘和焦油碱，包括吲哚
公开(公告)号：US4349418A
公开(公告)日：1982-09-14
申请号：US287668
申请日：1981-07-28
申请人： Stephen E. Belsky , Chempolil T. Mathew
发明人： Stephen E. Belsky , Chempolil T. Mathew
IPC分类号： C07D209/08 , C07C1/00 , C07C7/10 , C07C15/24 , C07C67/00 , C07D215/00 , C07D217/02 , C10C1/18 , G01D11/04
CPC分类号： C10C1/18
摘要： Methylnaphthalenes, indole and other tar bases are recovered from a base-extracted coal tar distillation fraction. In one form, an aqueous salt solution of pH 0.5-3 extracts other tar bases from the starting material, and thereafter both products are recovered from the raffinate by several alternate methods including ethylene glycol extraction and extractive distillation. In other forms, the starting material is extracted with ethylene glycol and the extract is distilled to recover several products including indole. The raffinate of ethylene glycol extraction contains methylnaphthalenes and other hydrocarbons and can be purified to solvent-grade material.
摘要翻译：甲基萘，吲哚和其他焦油碱从碱提取的煤焦油蒸馏馏分中回收。在一种形式中，pH为0.5-3的盐水溶液从起始原料中提取出其它焦油碱，然后通过几种替代方法从萃余液中回收两种产物，包括乙二醇萃取和萃取蒸馏。以其他形式，用乙二醇提取原料，蒸馏提取物回收多种产物，包括吲哚。乙二醇提取物的萃余液含有甲基萘和其他烃类，可以纯化成溶剂级材料。

3. 发明授权

US4455198A Extraction and/or extractive distillation of ethanol from aqueous solutions 失效
标题翻译：从水溶液中提取和/或提取乙醇
公开(公告)号：US4455198A
公开(公告)日：1984-06-19
申请号：US444925
申请日：1982-11-26
申请人： David Zudkevitch , David K. Preston , Stephen E. Belsky
发明人： David Zudkevitch , David K. Preston , Stephen E. Belsky
IPC分类号： B01D3/40 , C07C29/84 , B01D3/34
CPC分类号： C07C29/84 , B01D3/40
摘要： Ethanol is concentrated from ethanol-water mixtures by extraction or extractive distillation with a solvent which is a cyclic ketone of at least seven carbons or cyclic alcohol of at least eight carbons such a cyclohexylcyclohexanone or cyclohexylcyclohexanol. In the extractive distillation process, a first overheads is produced which can be made to be steam with minimal ethanol content and a second overhead is produced which can be made to be essentially pure ethanol. The preferred solvents are also non-toxic, such that the alcohol can be used for human consumption.
摘要翻译：通过萃取或萃取蒸馏，使用至少7个碳原子的环酮或至少8个碳的环状醇，例如环己基环己酮或环己基环己醇，乙醇浓缩乙醇。在萃取蒸馏过程中，产生可以使乙醇含量最低的蒸汽的第一开销，并且产生可制成基本上纯的乙醇的第二塔顶馏出物。优选的溶剂也是无毒的，使得醇可以用于人类消费。

4. 发明授权

US4428798A Extraction and/or extractive distillation of low molecular weight alcohols from aqueous solutions 失效
标题翻译：从水溶液中提取和/或提取低分子量醇
公开(公告)号：US4428798A
公开(公告)日：1984-01-31
申请号：US401793
申请日：1982-07-26
申请人： David Zudkevitch , Stephen E. Belsky , Preston D. Krautheim
发明人： David Zudkevitch , Stephen E. Belsky , Preston D. Krautheim
IPC分类号： B01D3/40 , B01D11/04 , C07C29/84 , C07C29/86
CPC分类号： B01D3/40 , B01D11/0426 , B01D11/0488 , C07C29/84
摘要： A process is disclosed for separating low molecular weight alcohols, especially ethanol, from aqueous mixtures. The process involves subjecting alcohol-water mixtures to extraction and/or extractive distillation procedures. Extractive solvents useful for the process of this invention include phenols having at least six carbon atoms and a boiling point between about 180.degree. C. and about 350.degree. C.
摘要翻译：公开了从含水混合物中分离低分子量醇，特别是乙醇的方法。该方法包括对醇 - 水混合物进行萃取和/或萃取蒸馏程序。可用于本发明方法的萃取溶剂包括具有至少6个碳原子和沸点在约180℃至约350℃之间的酚类。

5. 发明授权

US4415409A Process for the separation of high boiling oxygenated compounds from mixtures with phenol and/or cresol 失效
标题翻译：从苯酚和/或甲酚的混合物中分离高沸点含氧化合物的方法
公开(公告)号：US4415409A
公开(公告)日：1983-11-15
申请号：US468242
申请日：1983-02-22
申请人： David Zudkevitch , Stephen E. Belsky
发明人： David Zudkevitch , Stephen E. Belsky
IPC分类号： B01D3/40 , C07C37/80 , C07C45/83
CPC分类号： C07C45/83 , B01D3/40 , C07C37/80
摘要： An extractive distillation process is provided for the separation of phenol and/or cresol from mixtures with high boiling oxygenated compounds such as alkanols, alkanones, cycloalkanones, cycloalkanols, aryl alcohols, aryl ketones or mixtures thereof that have a boiling point of at least about 175.degree. C. The process involves distilling the phenol and/or cresol-high boiling oxygenated compound mixture in the presence of at least one extractive solvent comprising a substituted phenol and/or substituted cresol that has a boiling point between about 195.degree. C. and about 400.degree. C.
摘要翻译：提供萃取蒸馏方法，用于将苯酚和/或甲酚与高沸点氧化化合物（例如烷醇，链烷酮，环烷酮，环烷醇，芳基醇，芳基酮或其混合物）的混合物分离，沸点为至少约175 该方法包括在存在至少一种萃取溶剂的情况下蒸馏苯酚和/或甲酚 - 高沸点的氧化化合物混合物，所述萃取溶剂包含取代的苯酚和/或取代的甲酚，其沸点介于约195℃和约 400℃

6. 发明授权

US4323706A Production of acetaldehyde oxime 失效
标题翻译：生产乙醛肟
公开(公告)号：US4323706A
公开(公告)日：1982-04-06
申请号：US217938
申请日：1980-12-18
申请人： John H. Bonfield , Stephen E. Belsky , Donald Pickens
发明人： John H. Bonfield , Stephen E. Belsky , Donald Pickens
IPC分类号： C07C131/00
摘要： Acetaldehyde oxime, a commercially useful intermediate in the production of pesticides, is prepared by oximating acetaldehyde with an aqueous hydroxylamine-containing solution to form an aqueous oximation reaction mixture and recovering acetaldehyde oxime from the aqueous oximation reaction mixture by distilling a mixture of acetaldehyde oxime and water directly from the aqueous oximation reaction mixture.
摘要翻译：乙醛肟是生产农药的商业上有用的中间体，通过用含羟胺溶液肟化乙醛以形成水性肟化反应混合物并通过蒸馏乙醛肟混合物和肟化反应混合物回收乙醛肟来制备，水直接从水性肟化反应混合物中。

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