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公开(公告)号：US5401859A
公开(公告)日：1995-03-28
申请号：US072761
申请日：1993-06-07
申请人： Karl Muck , Helmut Schlaf , Siegbert Rittner
发明人： Karl Muck , Helmut Schlaf , Siegbert Rittner
IPC分类号： B01D9/02 , C07D323/06
CPC分类号： C07D323/06
摘要： In the process for the preparation of pure trioxane by continuous or semicontinuous crystallization processes, if alkaline organic compounds are added no flocks appear after more than 120 hours of operation. As a result, blockage of the crystallization unit is prevented and problem-free running is made possible.
摘要翻译： 在通过连续或半连续结晶方法制备纯三恶烷的过程中，如果添加碱性有机化合物，则在120多小时的操作后不会出现绒毛。 结果，阻止了结晶单元的堵塞，并且无故障运行成为可能。
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2.发明授权Process for releasing acidic organic compounds from salts thereof by carbon dioxide 失效通过二氧化碳从其盐中释放酸性有机化合物的方法
公开(公告)号：US5543564A
公开(公告)日：1996-08-06
申请号：US371153
申请日：1995-01-11
IPC分类号： C07B63/00 , C07C37/00 , C07C37/01 , C07C39/14 , C07C51/00 , C07C51/02 , C07C63/36 , C07C63/38 , C07C65/11 , C07C303/22 , C07C303/44 , C07C309/35 , C07C311/19 , C08G63/06 , C08G63/78 , C07C27/34 , C07C29/74
CPC分类号： C07C303/40 , C07C303/22 , C07C303/44 , C07C37/72 , C07C37/86 , C07C51/02 , C08G63/06
摘要： This invention embodies a process for releasing acidic organic compounds in high yield and good purity from aqueous solutions of their salts which comprises converting the salts by carbon dioxide to their corresponding free acidic organic compounds and metal hydrogen carbonates, removing the acidic organic compounds from the mixture by extraction with an essentially water-insoluble organic solvent, and re-extracting the organic phase with carbon dioxide containing water. Using this process, the acidic organic compounds are completely released from their corresponding salts, i.e., the organic solution is free of salt. The acidic organic compounds released by the claimed process are organic compounds which contain acidic protons which can be replaced by metals. Some examples are carboxylic acids, sulfonic acids, phosphonic acids, phenols, naphthols, and aliphatic alcohols.
摘要翻译： 本发明体现了一种从其盐的水溶液中以高产率和高纯度释放酸性有机化合物的方法，其包括将二氧化碳转化成其相应的游离酸性有机化合物和金属碳酸氢盐，从混合物中除去酸性有机化合物 通过用基本上不溶于水的有机溶剂萃取，并用含二氧化碳的水重新萃取有机相。 使用该方法，酸性有机化合物从其相应的盐完全释放，即有机溶液不含盐。 通过要求保护的方法释放的酸性有机化合物是含有可被金属取代的酸性质子的有机化合物。 一些实例是羧酸，磺酸，膦酸，酚，萘酚和脂族醇。
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公开(公告)号：US5532406A
公开(公告)日：1996-07-02
申请号：US245962
申请日：1994-05-19
IPC分类号： B01J27/232 , C07B61/00 , C07C51/15 , C07C65/03 , C07C65/11 , C07C65/21 , C07C65/24 , C07C227/02 , C07C229/64 , C07C229/70
CPC分类号： C07C51/15
摘要： A process for preparing aromatic hydroxycarboxylic acids or di-salts thereof by reaction of alkali metal phenolates or naphtholates with carbon dioxide, in the presence or absence of a further alkali metal salt, which comprises introducing the solid phenolate or naphtholate starting materials and, if desired, the alkali metal salt into the reaction mixture batchwise or continuously, separately or together, in the form of a dispersion in an inert organic liquid.The process of the invention makes possible the preparation of aromatic hydroxycarboxylic acids in good yields and with high chemical selectivity. Additional measures for increasing the selectivity, as are described for the Kolbe-Schmitt reaction in, for example, EP-A 0 053 824, EP-A 0 081 753 and EP-A 0 254 596, can be omitted.
摘要翻译： 在存在或不存在另外的碱金属盐的情况下，碱金属酚盐或萘酚与二氧化碳反应制备芳族羟基羧酸或其二盐的方法，其包括引入固体酚盐或萘甲酸酯起始原料，如果需要 将碱金属盐以分散体的形式分批地或连续地分别或一起进入反应混合物中，以分散体的形式存在于惰性有机液体中。 本发明的方法可以以良好的产率和高的化学选择性制备芳族羟基羧酸。 如在例如EP-A 0 053 824，EP-A 0 081 753和EP-A 0 254 596中描述的用于Kolbe-Schmitt反应的增加选择性的其它措施可以省略。
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4.发明授权Process for the preparation of a dioxane adduct of 2-hydroxynaphthalene-6-carboxylic acid 失效制备2-羟基萘-6-羧酸二恶烷加合物的方法
公开(公告)号：US5047558A
公开(公告)日：1991-09-10
申请号：US480080
申请日：1990-02-14
IPC分类号： C07C65/11 , C07D319/12
CPC分类号： C07C65/11 , C07D319/12
摘要： The invention relates to the dioxane adduct of 2-hydroxynaphthalene-6-carboxylic acid which adduct comprises 1 mol of 1,4-dioxane and about 2 mol of 2-hydroxynaphthalene-6-carboxylic acid per mol. The invention further relates to a process for the preparation of this adduct, wherein the 2-hydroxynaphthalene-6-carboyxlic acid is dissolved in dioxane or a mixture thereof with water or with an organic solvent and then allowed to crystallize.
摘要翻译： 本发明涉及2-羟基萘-6-羧酸的二恶烷加合物，该加合物包含1mol 1,4-二恶烷和约2mol 2-羟基萘-6-羧酸/ mol。 本发明还涉及一种制备该加合物的方法，其中将2-羟基萘-6-羧酸溶于二恶烷或其与水或有机溶剂的混合物中，然后使其结晶。
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公开(公告)号：US5808142A
公开(公告)日：1998-09-15
申请号：US305406
申请日：1994-09-13
摘要： A process for the preparation of 2-hydroxynaphthalene-6-carboxylic acid using potassium carbonate and CO at temperatures above 260.degree. C. and at a pressure of at least 10 bar comprises using 2-hydroxynaphthalene-3-carboxylic acid and/or 2-hydroxynaphthalene-3,6-dicarboxylic acid and/or their potassium salts and, if desired, potassium .beta.-naphtholate as starting materials. The process according to the invention enables a considerable increase, by reusing the secondary products, in the product selectivity with regard to 2-hydroxy-naphthalene-6-carboxylic acid.
摘要翻译： 使用碳酸钾和CO在高于260℃和至少10巴的压力下制备2-羟基萘-6-羧酸的方法包括使用2-羟基萘-3-甲酸和/或2-羟基萘-3-羧酸， 羟基萘-3,6-二羧酸和/或其钾盐，如果需要，可以将β-萘酚钾作为起始原料。 根据本发明的方法通过重新使用二次产物可以相对于2-羟基 - 萘-6-羧酸的产物选择性而显着增加。
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6.发明授权Process for separating and purifying substances by crystallization from the melt 失效通过从熔体中结晶分离和净化物质的方法
公开(公告)号：US5447542A
公开(公告)日：1995-09-05
申请号：US230498
申请日：1994-04-20
申请人： Rudolf Steiner , Axel Konig , Siegbert Rittner
发明人： Rudolf Steiner , Axel Konig , Siegbert Rittner
IPC分类号： C07B63/00 , B01D9/00 , C07C7/14 , C07C15/24 , C07C17/38 , C07C17/392 , C07C25/08 , C07C51/43 , C10G21/00
CPC分类号： C07C51/43 , B01D9/004 , C07C17/392 , C07C7/14
摘要： In the process for separating and purifying substances by crystallization from the melt under pressure, the melt is subjected to pressure under an inert gas atmosphere and then cooled, whereupon it crystallizes. The residual melt is separated from the resulting crystals, after which the crystals are degassed by reducing the pressure and are caused to sweat, and the sweat oil is separated off.
摘要翻译： 在通过在压力下从熔体中结晶分离和净化物质的方法中，将熔体在惰性气体气氛下进行压力，然后冷却，随后结晶。 将残余熔体与所得晶体分离，然后通过降低压力将晶体脱气并引起汗液，并将汗液分离出来。
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7.发明授权Process for separating and purifying substances by crystallization from the melt under high pressure 失效通过在高压下从熔体中结晶分离和净化物质的方法
公开(公告)号：US5447541A
公开(公告)日：1995-09-05
申请号：US230496
申请日：1994-04-20
申请人： Rudolf Steiner , Axel Konig , Siegbert Rittner
发明人： Rudolf Steiner , Axel Konig , Siegbert Rittner
CPC分类号： C07C7/14 , B01D9/004 , C07C17/392
摘要： Process for separating and purifying substances by crystallization from the melt under high pressuresIn the process for separating or purifying substances by crystallization from melts or highly concentrated solutions under high pressures, gas is dissolved in the melt to be crystallized and is expelled again after the crystallization with reduction in the pressure. Still adhering or occluded impurities are thus removed.
摘要翻译： 在高压下从熔体中通过结晶分离和净化物质的方法在通过在高压下从熔体或高浓度溶液中结晶分离或纯化物质的方法中，将气体溶解在熔体中以结晶，并在结晶后再次排出 压力降低。 因此，仍然粘附或封闭的杂质被除去。
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8.发明授权Process for improving the wetting characteristics of the surface of shaped plastics articles for applications in chemical engineering 失效用于改善成型塑料制品表面润湿特性的方法，用于化学工程中的应用
公开(公告)号：US4617197A
公开(公告)日：1986-10-14
申请号：US738087
申请日：1985-05-24
申请人： Siegbert Rittner , Eugen Morach , Hubert Schindler , Peter John
发明人： Siegbert Rittner , Eugen Morach , Hubert Schindler , Peter John
CPC分类号： F28F13/18 , B29C59/08 , C23C4/02 , F28F2245/02
摘要： It is possible, by means of a flame-spraying or plasma-spraying technique adjusted to suit the particular properties of a plastic, not only to provide nonreinforced plastics with a uniform coating, but also to achieve an excellent hydrophilic surface wettability at the same time.
摘要翻译： 通过调整适合塑料特性的火焰喷涂或等离子体喷涂技术，可以不仅提供具有均匀涂层的非增强塑料，而且可以同时实现极好的亲水表面润湿性 。
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9.发明授权
公开(公告)号：US5312976A
公开(公告)日：1994-05-17
申请号：US917049
申请日：1992-07-31
申请人： Volker Hautzel , Siegbert Rittner
发明人： Volker Hautzel , Siegbert Rittner
CPC分类号： C07C51/10
摘要： 2-Hydroxy-naphthalene-6-carboxylic acid or its dipotassium salt is obtained in a good yield and purity without substantial formation of the isomeric compound 2-naphthol-3-carboxylic acid by reacting potassium .beta.-naphtholate with potassium carbonate in the presence of carbon monoxide at a temperature above 260.degree. C. in potassium formate as the solvent.
摘要翻译： PCT No.PCT / EP91 / 00132 Sec。 371日期：1992年7月31日 102（e）日期1992年7月31日PCT 1991年1月24日PCT PCT。 公开号WO91 / 11422 PCT 日期1991年8月8日2-羟基 - 萘-6-羧酸或其二钾盐以良好的产率和纯度获得，而通过使β-萘酚钾与钾反应基本形成异构化合物2-萘酚-3-羧酸 在一氧化碳存在下，在高于260℃的温度下，在甲酸钾中作为溶剂。
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公开(公告)号：US5136083A
公开(公告)日：1992-08-04
申请号：US575513
申请日：1990-08-30
IPC分类号： C07C37/84 , C07B63/00 , C07C67/52 , C07C69/157
CPC分类号： C07C67/52
摘要： The present invention relates to a process for the purification of 4-acetoxystyrene from a crude product mixture comprising 4-acetoxystyrene and typically 5 or more contaminants in substantial amount.The crude product mixture is purified by melt crystallization by cooling the mixture to a temperature ranging from about +8.degree. C. to about -50.degree. C., whereby at least a first portion of the mixture is crystallized; removing the liquid remaining from contact with the crystallized first portion of the mixture; and, subsequently slowly heating the crystallized first portion, while simultaneously removing liquid which forms due to the heating, whereby impurities contained in the liquid which forms are removed from the crystallized first portion.Surprisingly, despite the large number of contaminants present, and use of the process to purify crude product mixtures containing as little as 50% by weight 4-acetoxystyrene, purities as high as 99.9% by weight have been obtained using multiple melt-crystallization steps of the process of the invention.
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