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1. 发明授权

US4720577A Process for the extraction of carboxylic acids from dilute aqueous solutions 失效
标题翻译：从稀水溶液中萃取羧酸的方法
公开(公告)号：US4720577A
公开(公告)日：1988-01-19
申请号：US783212
申请日：1985-10-02
申请人： Bernhard Wojtech , Walter Steppich , Dieter Freudenberger , Knut Riedel
发明人： Bernhard Wojtech , Walter Steppich , Dieter Freudenberger , Knut Riedel
IPC分类号： C07C53/00 , C07C51/00 , C07C51/48 , C07C55/02 , C07C59/01 , C07C67/00 , C07C51/42
CPC分类号： C07C51/48
摘要： The invention relates to a process for the extraction of carboxylic acids from aqueous solutions with a carboxylic acid content below 8% by weight. A mixture of an aliphatic amine with a total carbon number of at least 10 and a phenol or naphthol is used as extracting agent. The molar ratio of phenol:amine or alkylated phenol:amine or naphthol:amine is in the range from 0.1:1 to around 1.1:1.
摘要翻译：本发明涉及一种羧酸含量低于8重量％的水溶液萃取羧酸的方法。使用总碳数至少为10的脂族胺和苯酚或萘酚的混合物作为提取剂。苯酚：胺或烷基化酚：胺或萘酚：胺的摩尔比在0.1:1至1.1:1的范围内。

2. 发明授权

US4373073A Process for the preparation of glycidyl ethers of monohydric or polyhydric phenols, the glycidyl ethers and use thereof 失效
标题翻译：一元或多元酚的缩水甘油醚的制备方法，缩水甘油醚及其用途
公开(公告)号：US4373073A
公开(公告)日：1983-02-08
申请号：US209586
申请日：1980-11-24
申请人： Bernhard Wojtech , Hans-Joachim Kiessling , Wilhelm Becker , Kurt Hermann
发明人： Bernhard Wojtech , Hans-Joachim Kiessling , Wilhelm Becker , Kurt Hermann
IPC分类号： B01J31/00 , C07B61/00 , C07D301/28 , C07D303/22 , C07D303/24 , C08G59/06 , C08G59/08
CPC分类号： C07D303/22 , C07D303/24 , C08G59/063
摘要： Glycidyl ethers of monohydric or polyhydric phenols of high purity are obtained if hydrogen halide is eliminated from halohydrin ethers of the phenols in aqueous alkalis in the presence of one or more onium compounds selected from quaternary ammonium compounds having at least one aliphatic C.sub.4-22 hydrocarbon radical, quaternary phosphonium compounds and tertiary sulphonium compounds as catalyst, or in the presence of those compounds which form in the reaction medium in situ, before the addition of the alkali, such onium compounds from the halohydrin ethers together with tertiary amines, tertiary phosphines or thioethers. In comparison with the known processes, the rate of dehydrohalogenation can thereby be significantly increased as a result of which an increase in production is achieved. Moreover, significantly purer reaction products are obtained by the avoidance of side reactions. The glycidyl ethers may be used as low-viscosity casting and coating resins in the form of coatings, adhesives, moulding materials, etc., and conventional hardeners can be employed. Due to their low viscosity the workability of the glycidyl ethers is considerably better and the capacity to absorb filling materials is greater. The extremely low content of easily saponifiable halogen results in an especially favorable corrosion behavior.
摘要翻译：在一种或多种选自具有至少一个脂族C 4-22烃基基团的季铵化合物的鎓化合物存在下，在含水碱中的酚的卤代醇醚中除去卤化氢，得到高纯度的一元或多元酚的缩水甘油醚，作为催化剂的季鏻化合物和叔锍化合物，或在加入碱之前在原位形成反应介质中的那些化合物的存在下，卤代醇醚与叔胺，叔膦或硫醚一起形成的鎓化合物。与已知方法相比，脱卤化氢的速率因此可以显着增加，结果实现了生产的增加。此外，通过避免副反应获得明显更纯的反应产物。缩水甘油醚可以用作涂料，粘合剂，模塑材料等形式的低粘度浇铸和涂布树脂，并且可以使用常规的硬化剂。由于它们的低粘度，缩水甘油醚的可加工性相当好，吸收填充材料的能力更大。容易皂化的卤素含量极低，导致特别有利的腐蚀行为。

3. 发明授权

US5068358A Process for extracting N-methyl-2-pyrrolidone 失效
标题翻译：提取N-甲基-2-吡咯烷酮的方法
公开(公告)号：US5068358A
公开(公告)日：1991-11-26
申请号：US419687
申请日：1989-10-11
申请人： Georg-Emerich Miess , Karl-Heinz Schwarz , Heribert Tetzlaff , Bernhard Wojtech
发明人： Georg-Emerich Miess , Karl-Heinz Schwarz , Heribert Tetzlaff , Bernhard Wojtech
IPC分类号： C07D207/267 , C07D207/38
CPC分类号： C07D207/38
摘要： The invention relates to a process for separating N-methyl-2-pyrrolidone (NMP) from aqueous solutions which are obtained in industry, inter alia, in the production of heat-resistance polymers such as polyamides and polyimides.According to the invention, the extractants used are phenols which are sparingly soluble in water, are aliphatically monosubstituted and/or polysubstituted in the nucleus and have 4 to 16 carbon atoms in the straight-chain or branched, saturated or unsaturated aliphatic radical and have a boiling point which is preferably at least 20.degree.-25.degree. C. above the boiling point of NMP. If necessary, an inert, viscosity-reducing diluent is added.
摘要翻译：本发明涉及从工业上获得的水溶液中分离N-甲基-2-吡咯烷酮（NMP）的方法，特别是在生产耐热聚合物如聚酰胺和聚酰亚胺时。根据本发明，所使用的萃取剂是微溶于水的酚，在核中脂肪单取代和/或多取代，在直链或支链，饱和或不饱和脂族基团中具有4至16个碳原子，并具有沸点优选在NMP沸点以上至少20°-25℃。如果需要，加入惰性的减粘稀释剂。

4. 发明授权

US5073622A Process for the preparation of novolak resins with low metal ion content 失效
标题翻译：用于制备具有低金属离子含量的NOVOLAK树脂的方法
公开(公告)号：US5073622A
公开(公告)日：1991-12-17
申请号：US550692
申请日：1990-07-10
申请人： Bernhard Wojtech , Walter Niederstaetter , Horst-Dieter Thamm
发明人： Bernhard Wojtech , Walter Niederstaetter , Horst-Dieter Thamm
IPC分类号： C08G8/08 , C08G8/00 , C08G8/10 , C08J3/00
CPC分类号： C08G8/10
摘要： The invention relates to a process for the preparation of novolak resins having a low amount of metal ions. In the process, a conventional resin in an organic solution is brought into contact with an acidic, preferably complex-forming compound which preferably is present in an aqueous phase. The resin solutions may be used in the production of photoresists.
摘要翻译：本发明涉及制备低量金属离子的酚醛清漆树脂的方法。在此过程中，有机溶液中的常规树脂与酸性，优选形成络合物的化合物接触，优选存在于水相中。树脂溶液可用于制备光致抗蚀剂。

5. 发明授权

US4196180A Purification of phosphoric acid by means of organic solvents 失效
标题翻译：通过有机溶剂纯化磷酸
公开(公告)号：US4196180A
公开(公告)日：1980-04-01
申请号：US881516
申请日：1978-02-27
申请人： Bernhard Wojtech , Klaus P. Ehlers , Wolfgang Scheibitz
发明人： Bernhard Wojtech , Klaus P. Ehlers , Wolfgang Scheibitz
IPC分类号： C01B25/46 , C01B25/22
CPC分类号： C01B25/461 , C01B25/462
摘要： Contaminated phosphoric acid, particularly wet-processed phosphoric acid, is purified by extracting it from its aqueous solution by means of an organic solvent, which is immiscible or partially miscible with water and in which phosphoric acid is soluble, separating the phosphoric acid being dissolved in the organic solvent from extraction residue, and recovering the phosphoric acid from the organic solution.The aqueous phosphoric acid is more particularly mixed in a reaction zone, in a ratio by volume within the range 1:0.3 to 1:30, with a solvent having a boiling point higher than that of water or higher than that of the resulting water solvent-azeotrope, the phosphoric acid/solvent-mixture is heated to temperatures between the boiling point of water or of the said azeotrope and that of the solvent until distillation of substantially all uncombined water originally present in the mixture, and residue and resulting anhydrous phosphoric acid solution in the organic solvent are separated.
摘要翻译：污染的磷酸，特别是湿法处理的磷酸，通过与水不混溶或部分混溶并且其中可溶于磷酸的有机溶剂从其水溶液中提取而被纯化，将溶解的磷酸分离来自萃取残余物的有机溶剂，并从有机溶液中回收磷酸。磷酸水溶液在反应区域中以体积比在1:0.3至1:30的范围内更特别地混合，其中溶剂的沸点高于水或高于所得水溶剂的沸点将该磷酸/溶剂混合物加热至沸点或沸点与所述共沸物和溶剂的沸点直到蒸馏出基本上所有未混合的水，最初存在于混合物中，残余物和得到的无水磷酸分离有机溶剂中的溶液。

6. 发明授权

US3996336A Purification of phosphoric acid 失效
标题翻译：磷酸的纯化
公开(公告)号：US3996336A
公开(公告)日：1976-12-07
申请号：US592188
申请日：1975-07-01
申请人： Bernhard Wojtech , Klaus-Peter Ehlers , Wolfgang Scheibitz
发明人： Bernhard Wojtech , Klaus-Peter Ehlers , Wolfgang Scheibitz
IPC分类号： C01B25/234 , C01B25/18 , C01B25/46 , C01B25/16
CPC分类号： C01B25/18 , C01B25/464
摘要： Phosphoric acid is purified. To this end, it is dissolved in an organic solvent completely miscible with water. More particularly, the phosphoric acid is mixed with a solvent having a boiling point higher than that of water or higher than that of the resulting azeotrope; the resulting solution is heated to temperatures between the boiling point of water or the azeotrope and that of the solvent for as long a period as necessary to distillatively free the solution from the bulk of uncombined water therein; and the phosphoric acid solution is separated from residue.
摘要翻译：纯化磷酸。为此，将其溶解在与水完全混溶的有机溶剂中。更具体地说，将磷酸与沸点高于水或高于所得共沸物的溶剂混合; 将所得溶液加热到水或共沸物的沸点与溶剂沸点之间的温度长达一段时间，以将溶液从其中的大部分未混合水蒸馏出来; 并将磷酸溶液与残留物分离。

7. 发明授权

US4986974A Process for the separation of halogenated hydrocarbons from hydrochloric acid 失效
标题翻译：从盐酸中分离卤代烃的方法
公开(公告)号：US4986974A
公开(公告)日：1991-01-22
申请号：US400272
申请日：1989-08-29
申请人： Wilhelm Lendle , Wolfgang Scheibitz , Heribert Tetzlaff , Bernhard Wojtech
发明人： Wilhelm Lendle , Wolfgang Scheibitz , Heribert Tetzlaff , Bernhard Wojtech
IPC分类号： C07C17/38 , C01B7/07 , C07C17/00 , C07C19/01 , C07C19/04 , C07C19/041 , C07C19/08 , C07C67/00
CPC分类号： C01B7/0731 , Y10S210/908 , Y10S210/909
摘要： A process is disclosed for the separation of halogenated hydrocarbons from concentrated hydrochloric acid, which contains 10 to 37% by weight of hydrogen chloride. The hydrochloric acid is freed from the halogenated hydrocarbons in an extraction with paraffins having more than 7 carbon atoms, or with paraffin waxes having dropping points from 70.degree. to 160.degree. C. or with paraffin/paraffin wax mixtures, preferably in a continuous counterflow extraction or cross-flow extraction.
摘要翻译：公开了用于从含有10至37重量％氯化氢的浓盐酸中分离卤代烃的方法。在具有多于7个碳原子的链烷烃的提取物中，或者使用滴点为70至160℃的石蜡或石蜡/石蜡混合物，优选在连续逆流萃取中，将盐酸从卤代烃中脱除或交叉流提取。

8. 发明授权

US4814518A Process for extracting nitrohydroxyaromatics from aqueous solutions 失效
标题翻译：从水溶液中提取硝基羟基芳烃的方法
公开(公告)号：US4814518A
公开(公告)日：1989-03-21
申请号：US84483
申请日：1987-08-12
申请人： Helmut Gossel , Herbert Kuckertz , Siegbert Rittner , Josef Rosenfelder , Bernhard Wojtech
发明人： Helmut Gossel , Herbert Kuckertz , Siegbert Rittner , Josef Rosenfelder , Bernhard Wojtech
IPC分类号： B01D11/04 , C02F1/26 , C02F1/58 , C07C67/00 , C07C201/00 , C07C201/16 , C07C205/22 , C07C79/22 , C07C37/68
CPC分类号： C07C201/16 , C02F1/26
摘要： The invention relates to a process for extracting nitrohydroxyaromatics from aqueous solutions. In this process, the extracting agent used is an amine salt which comprises an aliphatic amine having a total carbon number of 10 to 75 and a strong acid. The amine salt can be employed undiluted or diluted with an organic solvent.
摘要翻译：本发明涉及从水溶液中提取硝基羟基芳烃的方法。在该方法中，所用的萃取剂是一种胺盐，其包含总碳数为10至75的脂族胺和强酸。胺盐可以未稀释使用或用有机溶剂稀释。

9. 发明授权

US4864065A Process for removing halogenated hydroxyaromatics from aqueous solutions 失效
标题翻译：从水溶液中除去卤代羟基芳烃的方法
公开(公告)号：US4864065A
公开(公告)日：1989-09-05
申请号：US200838
申请日：1988-06-01
申请人： Bernhard Wojtech , Siegbert Rittner , Heinz Reiss , Reinhard Zunder
发明人： Bernhard Wojtech , Siegbert Rittner , Heinz Reiss , Reinhard Zunder
IPC分类号： C07C37/72 , C02F1/26 , C07C27/00 , C07C39/24 , C07C67/00
CPC分类号： C02F1/26
摘要： The invention relates to a process for extracting halogenated hydroxyaromatics from aqueous solutions. In this process, the extractant used is an amine salt comprising an aliphatic amine having a total carbon number of 10 to 75 and a strong acid. The amine salt may be employed in undiluted form or diluted with an organic solvent.
摘要翻译：本发明涉及从水溶液中提取卤代羟基芳族化合物的方法。在该方法中，使用的萃取剂是包含总碳数为10〜75的脂肪族胺和强酸的胺盐。胺盐可以未稀释的形式使用或用有机溶剂稀释。

10. 发明授权

US4626605A Process for extracting phenols from aqueous solutions 失效
标题翻译：从水溶液中萃取酚类的方法
公开(公告)号：US4626605A
公开(公告)日：1986-12-02
申请号：US783341
申请日：1985-10-02
申请人： Bernhard Wojtech , Manfred Mayer , Karl-Erich Ott
发明人： Bernhard Wojtech , Manfred Mayer , Karl-Erich Ott
IPC分类号： C07C27/00 , C07C37/72 , C07C39/02 , C07C67/00 , C07C37/82 , C07C37/70
CPC分类号： C07C37/72
摘要： The invention relates to a process for extracting phenols from aqueous solutions. The extractant used is a salt of an aliphatic amine, having a total carbon number of at least 10, and a strong acid.
摘要翻译：本发明涉及从水溶液中提取酚类的方法。所使用的萃取剂是总碳数至少为10的脂族胺和强酸的盐。

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