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1. 发明授权

US06008409A Method for obtaining 2-hydroxy-4-methylthiobutyric acid (MHA) which is stable in storage 失效
标题翻译：获得储存稳定的2-羟基-4-甲硫基丁酸（MHA）的方法
公开(公告)号：US06008409A
公开(公告)日：1999-12-28
申请号：US999000
申请日：1997-12-29
申请人： Hans-Albrechl Hasseberg , Hans-Joachim Hasselbach , Klaus Huthmacher , Volker Hafner , Harald Heinzel , Axel Ronneburg
发明人： Hans-Albrechl Hasseberg , Hans-Joachim Hasselbach , Klaus Huthmacher , Volker Hafner , Harald Heinzel , Axel Ronneburg
IPC分类号： C07C319/20 , A23K20/105 , C07C319/26 , C07C319/28 , C07C323/52 , C07C315/00
CPC分类号： C07C319/28 , A23K20/105 , C07C319/26
摘要： A method for obtaining 2-hydroxy-4-methylthiobutyric acid (methionine-hydroxy analog, MHA) in primarily free form which is stable in storage by distilling a product solution containing MHA and by producing MHA product mixtures with improved storage stability from such a distillate. The distillate can be produced directly starting from MHA raw products from any MHA production process, which can optionally also contain solvent or water. The starting material may also be a commercial MHA product.
摘要翻译：获得主要游离形式的2-羟基-4-甲硫基丁酸（甲硫氨酸 - 羟基类似物，MHA）的方法，其通过蒸馏含有MHA的产物溶液并通过生产具有改善的储存稳定性的这种馏出物的MHA产物混合物而在储存中稳定。馏出物可以从任何MHA生产过程的MHA原始产品直接生产，其可任选地还含有溶剂或水。起始材料也可以是商业MHA产品。

2. 发明授权

US6140536A Process for obtaining 2-hydroxy-4-methylthiobutyric acid (MHA) 有权
标题翻译：获得2-羟基-4-甲硫基丁酸（MHA）的方法
公开(公告)号：US6140536A
公开(公告)日：2000-10-31
申请号：US91796
申请日：1998-09-01
申请人： Hans Albrecht Hasseberg , Hans Joachim Hasselbach , Klaus Huthmacher , Volker Hafner , Harald Heinzel , Barbara Jager
发明人： Hans Albrecht Hasseberg , Hans Joachim Hasselbach , Klaus Huthmacher , Volker Hafner , Harald Heinzel , Barbara Jager
IPC分类号： C07C319/20 , C07C319/28 , C07C323/52 , C07C315/00
CPC分类号： C07C319/28 , C07C319/20
摘要： A method for the isolation of 2-hydroxy-4-methylthiobutyric acid (MHA), wherein MHA is isolated from a reaction mixture obtained by addition of hydrogen cyanide (HCN) to methylmercaptopropionaldehyde (MMP) and hydrolysis by sulphuric acid of the methylmercaptopropionaldehyde cyanohydrin (MMP-CH) thus obtained. The reaction mixture is brought into contact in a liquid/liquid extraction system with an organic solvent substantially immiscible with water, in order to form an extraction solution which contains the solvent and the MHA transferred out of the reaction mixture. By bringing the salt content of the reaction mixture, prior to the liquid/liquid extraction, to a concentration of about >50 wt. % (wt./wt.), preferably >55 wt. %, referred to the sum of the inorganic constituents of the reaction mixture, the coordinated use of energy in the total system is improved, the evaporation of strongly corrosive solutions is avoided, the efficiency of the hydrolysis step is increased and the distribution coefficients during the extraction are improved. The MHA is isolated as the extract from this extraction solution by evaporation, and may be used as animal feed supplement.
摘要翻译： PCT No.PCT / EP96 / 05437 Sec。 371日期：1998年9月1日 102（e）1998年9月1日PCT PCT 1996年12月5日PCT公布。公开号WO97 / 23452 日期1997年7月3日分离2-羟基-4-甲硫基丁酸（MHA）的方法，其中MHA是通过将氰化氢（HCN）加入到甲基巯基丙醛（MMP）中并通过硫酸水解而获得的反应混合物中分离的的甲基巯基丙醛氰醇（MMP-CH）。使反应混合物在液/液萃取系统中与基本上与水不混溶的有机溶剂接触，以形成含有溶剂和从反应混合物中转移的MHA的萃取溶液。通过使液体/液体萃取之前的反应混合物的盐含量达到约> 50wt。％（重量/重量），优选> 55重量％％，是指反应混合物的无机成分之和，改善了总体系中能量的协调使用，避免了强腐蚀性溶液的蒸发，提高了水解步骤的效率，提高了分散系数提取提高。通过蒸发将MHA作为来自该提取溶液的提取物分离，并且可以用作动物饲料添加剂。

3. 发明授权

US6146612A Method for recovering sulfuric acid from sulfate salts 有权
标题翻译：从硫酸盐中回收硫酸的方法
公开(公告)号：US6146612A
公开(公告)日：2000-11-14
申请号：US206948
申请日：1998-12-08
申请人： Hans Albrecht Hasseberg , Hans Joachim Hasselbach , Klaus Huthmacher , Volker Hafner , Harald Heinzel
发明人： Hans Albrecht Hasseberg , Hans Joachim Hasselbach , Klaus Huthmacher , Volker Hafner , Harald Heinzel
IPC分类号： B01D53/34 , B01D53/50 , B01D53/77 , C01B17/58 , C01B17/74 , C07C319/20 , C07C319/28 , C07C323/52 , C07C323/60
CPC分类号： C07C319/20 , C01B17/585 , C01B17/745 , C07C319/28
摘要： A process is provided for the recovery of sulfuric acid from NH.sub.4 HSO.sub.4 and (NH.sub.4).sub.2 SO.sub.4 salts produced from the sulfuric acid hydrolysis of methylmercaptopropionaldehyde (MMP) cyanohydrin to produce 2-hydroxy-4-methylthiobutyric acid (MHA), which can be used as an additive in animal feed. The sulfate salts are combusted in a furnace to produce sulfur dioxide; the sulfur dioxide is contacted with an aqueous solution containing sulfuric acid and hydrogen peroxide, where the sulfur dioxide is converted into sulfuric acid. The product sulfuric acid is recovered.
摘要翻译：提供了从甲基巯基丙醛（MMP）氰醇的硫酸水解产生的NH 4 HSO 4和（NH 4）2 SO 4盐中回收硫酸以产生2-羟基-4-甲硫基丁酸（MHA）的方法，其可以用作动物饲料添加剂。硫酸盐在炉中燃烧以产生二氧化硫; 二氧化硫与含有硫酸和过氧化氢的水溶液接触，其中二氧化硫被转化成硫酸。产物硫酸被回收。

4. 发明授权

US5976609A Process for recovering 2-hydroxy-4-methylthiobutyric acid (MHA), MHA and its use 失效
标题翻译： 2-羟基-4-甲硫基丁酸（MHA），MHA及其用途的回收方法
公开(公告)号：US5976609A
公开(公告)日：1999-11-02
申请号：US776217
申请日：1997-01-13
申请人： Hans-Albrecht Hasseberg , Klaus Huthmacher , Herbert Tanner , Volker Hafner , Harald Heinzel
发明人： Hans-Albrecht Hasseberg , Klaus Huthmacher , Herbert Tanner , Volker Hafner , Harald Heinzel
IPC分类号： A23K1/16 , C07C319/20 , C07C319/28 , C07C323/52 , C07C323/60 , A23L1/305 , A23L1/28 , C15C315/02 , C15C315/06
CPC分类号： C07C319/28 , A23K20/105 , C07C319/20 , Y10S426/807
摘要： It is known to isolate MHA from a reaction mixture obtained by the addition of hydrocyanic acid (HCN) to methyl mercaptopropionic aldehyde (MMP) and the hydrolysis of the methyl mercapto propionic aldehyde cyanohydrine (MMP-CH) obtained thereby with sulphuric acid, in which the reaction mixture is brought into contact with a substantially non-water-miscible organic solvent, in order to form an extraction solution having the solvent and MHA transferred from the reaction mixture, and the MHA is obtained as an extract from this extraction solution by concentration. The simplest and most economical process of the invention concerning the processing of the reaction product which facilitates the production of a highly concentrated product with an extremely low dimer, oligomer and by-product content, is characterised in that the concentration is conducted in such a way that the remaining extract contains less than 4 wt % and preferably less than 2 wt % of water. Animal feed supplement, mixtures for supplementing animal feed, e.g. with methionine or ammonium-MHA.
摘要翻译： PCT No.PCT / EP95 / 02515 Sec。 371日期1997年1月13日 102（e）日期1997年1月13日PCT提交1995年6月28日PCT公布。公开号WO96 / 01809 日本1996年1月25日已知通过将氢氰酸（HCN）加入到甲基巯基丙醛（MMP）中获得的反应混合物和由此获得的甲基巯基丙醛氰基氢醌（MMP-CH）的水解来分离MHA 硫酸，其中使反应混合物与基本上不与水混溶的有机溶剂接触，以形成从反应混合物中转移有溶剂和MHA的提取溶液，并且获得MHA作为该提取液通过浓缩。关于有助于生产具有极低二聚体，低聚物和副产物含量的高浓缩产物的反应产物的加工的本发明的最简单和最经济的方法的特征在于以这种方式进行浓缩剩余的提取物含有小于4重量％，优选小于2重量％的水。动物饲料补充剂，补充动物饲料的混合物。与甲硫氨酸或铵-MAA。

5. 发明申请

US20060047169A1 Preparation of 2-hydroxy-4-methylthiobutyric acid 有权
标题翻译： 2-羟基-4-甲硫基丁酸的制备
公开(公告)号：US20060047169A1
公开(公告)日：2006-03-02
申请号：US11212023
申请日：2005-08-25
申请人： Alexander Moller , Hans-Albrecht Hasseberg , Harald Heinzel , Volker Hafner
发明人： Alexander Moller , Hans-Albrecht Hasseberg , Harald Heinzel , Volker Hafner
IPC分类号： C07C319/12
CPC分类号： C07C319/20 , C07C323/52
摘要： A process for the preparation of 2-hydroxy-4-methylthiobutyric acid.
摘要翻译：一种制备2-羟基-4-甲硫基丁酸的方法。

6. 发明授权

US06316661B1 Process for the production of 2,3,5-trimethylhydroquinone diesters 失效
标题翻译：制备2,3,5-三甲基氢醌二酯的方法
公开(公告)号：US06316661B1
公开(公告)日：2001-11-13
申请号：US09493065
申请日：2000-01-28
申请人： Steffen Krill , Horst Weigel , Klaus Huthmacher , Nongyuan Shi , Georg Markowz , Volker Hafner
发明人： Steffen Krill , Horst Weigel , Klaus Huthmacher , Nongyuan Shi , Georg Markowz , Volker Hafner
IPC分类号： C07C6900
CPC分类号： C07C67/00 , Y02P20/582 , C07C69/017 , C07C69/16 , C07C69/28
摘要： A process for the production of 2,3,5-trimethylhydroquinone diesters by aromatization of 2,6,6-trimethyl-2-cyclohexene-1,4-dione (4-oxoisophorone, ketoisophorone, KIP) with an acylating agent and an acidic soluble or insoluble catalyst, which process may be operated alternatively continuously or discontinuously. The process includes the following steps: a) a carboxylic anhydride having a C1 to C4 alkyl residue is used as the acylating agent, b) after the reaction, a proportion of the resultant carboxylic acid is optionally removed by distillation, c) the reaction solution is cooled, d) the product which has crystallized out is separated and washed, and e) the filtrate is returned to step a).
摘要翻译：通过2,6,6-三甲基-2-环己烯-1,4-二酮（4-氧异佛尔酮，酮异佛尔酮，KIP）与酰化剂和酸性化合物的芳构化生产2,3,5-三甲基氢醌二酯的方法可溶或不溶的催化剂，该方法可以交替连续或不连续地操作。该方法包括以下步骤：a）具有C1至C4烷基残基的羧酸酐用作酰化剂，b）反应后，任选地通过蒸馏除去所得羧酸的一部分，c）反应溶液被冷却，d）结晶出来的产物被分离和洗涤，e）将滤液返回到步骤a）。

7. 发明授权

US5847207A Process for producing 2-hydroxy-4-methylthiobutyric acid (MHA) and its use as feed stuff supplement 失效
标题翻译：制备2-羟基-4-甲硫基丁酸（MHA）的方法及其作为饲料添加剂的使用
公开(公告)号：US5847207A
公开(公告)日：1998-12-08
申请号：US793113
申请日：1997-05-13
申请人： Helmut Suchsland , Volker Hafner
发明人： Helmut Suchsland , Volker Hafner
IPC分类号： A23K1/16 , C07C319/20 , C07C319/28 , C07C323/52 , C07C323/60 , C07C315/00
CPC分类号： C07C319/20 , C07C319/28
摘要： Known processes for producing 2-hydroxy-4-methylthiobutyric acid (MHA) use a liquid-liquid extraction or a combined liquid/liquid and solid/liquid phase separation to isolate MHA from a reaction mixture produced by hydrolysing MMP-cyanhydrine. These processes are either costly or produce waste that is difficult to dispose of. These disadvantages are eliminated by isolating MHA by solid/liquid separation. The reaction mixture is evaporated until a MHA-containing salt residue with little or no residual water is obtained the MHA-containing, salt residue is treated with an organic solvent to produce a suspension, solid components are separated from the thus obtained suspension until a MHA-containing solution is obtained, the organic solvent is removed from the MHA-containing solution until a MHA residue is obtained and if required the MHA residue is then conditioned by water admixture. Besides high quality MHA, this process produces marketable crystalline ammonium sulphate and/or hydrogenated ammonium sulphate. This process is useful for producing feedstuff supplements.
摘要翻译： PCT No.PCT / EP95 / 03068 Sec。 371日期1997年5月13日 102（e）日期1997年5月13日PCT提交1995年8月2日PCT公布。公开号WO96 / 05173 日期1996年2月22日生产2-羟基-4-甲硫基丁酸（MHA）的方法采用液 - 液萃取或液 - 液和液/液相组合分离，从通过水解MMP- 氰水。这些过程是昂贵的或产生难以处置的废物。通过固/液分离隔离MHA来消除这些缺点。将反应混合物蒸发直到得到具有少量或不残留水的含MHA的盐残余物，含有MHA的盐残余物用有机溶剂处理以产生悬浮液，将固体组分从如此获得的悬浮液中分离直到MHA 得到的有机溶剂从含有MHA的溶液中除去，直到获得MHA残留物，如果需要，则通过水混合物对MHA残余物进行调理。除了高品质的MHA之外，该方法还生产了市售的结晶硫酸铵和/或氢化的硫酸铵。此过程对生产饲料添加剂有用。

8. 发明授权

US4307037A Process for the production of iminodiacetonitrile 失效
标题翻译：亚氨基乙腈生产工艺
公开(公告)号：US4307037A
公开(公告)日：1981-12-22
申请号：US198262
申请日：1980-10-17
申请人： Helmut Suchsland , Volker Hafner , Axel Kleemann
发明人： Helmut Suchsland , Volker Hafner , Axel Kleemann
IPC分类号： C07C253/08 , C07C20060101 , C07C67/00 , C07C253/00 , C07C255/24 , C07C255/61 , C07C120/00 , C07C121/43
CPC分类号： C07C255/00
摘要： The invention is directed to a process for the production of iminodiacetonitrile by reaction of hexamethylenetetramine with hydrogen cyanide in acidic aqueous mediums. In this process the pH during the reaction which is 5.5 to 7.5 at the beginning is progressively lowered, altogether around 0.5 to 3.5 units and free formaldehyde is present only to a slight extent. Through this and in contrast to the known processes the formation of byproducts is suppressed and iminodiacetonitrile is produced directly in very good yields and sufficiently pure for further use.
摘要翻译：本发明涉及通过在酸性水性介质中六亚甲基四胺与氰化氢的反应制备亚氨基二乙腈的方法。在此过程中，开始时5.5至7.5的反应中的pH逐渐降低，共约0.5-3.5个单位，游离甲醛仅在一定程度上存在。通过这一点，与已知的方法相反，副产物的形成被抑制，亚氨基乙腈直接以非常好的产率直接生产，并且足够纯以供进一步使用。

9. 发明申请

US20050072468A1 Vacuum drainage system 有权
标题翻译：真空排水系统
公开(公告)号：US20050072468A1
公开(公告)日：2005-04-07
申请号：US10679742
申请日：2003-10-06
申请人： Volker Hafner , Thomas Zinn , Enrique Loreto
发明人： Volker Hafner , Thomas Zinn , Enrique Loreto
IPC分类号： E03F1/00 , F04F3/00
CPC分类号： E03F1/006 , Y10T137/0379 , Y10T137/3109
摘要： A vacuum drainage system operable to remove waste from a source. The system includes an accumulator in fluid communication with the source and a substantially vertical riser having a first portion in fluid communication with the accumulator and a second portion downstream of the first portion and in fluid communication with a vacuum source. A first valve is disposed between the first portion and the second portion. The first valve is selectively operable to provide fluid communication between the first portion and the vacuum source. An air inlet is disposed a distance downstream of the first valve and is selectively operable to provide fluid communication between the outside atmosphere and the second portion.
摘要翻译：真空排水系统可操作以从源中除去废物。该系统包括与源流体连通的蓄能器和具有与蓄能器流体连通的第一部分和第一部分下游的第二部分并与真空源流体连通的基本垂直的提升管。第一阀设置在第一部分和第二部分之间。第一阀选择性地可操作以在第一部分和真空源之间提供流体连通。空气入口设置在第一阀下游的距离处，并且可选择性地操作以在外部气氛和第二部分之间提供流体连通。

10. 发明授权

US4157300A Process for the purification of phenol and phenol formaldehyde containing waste water 失效
标题翻译：用于净化苯酚和苯酚甲醛的废水的方法
公开(公告)号：US4157300A
公开(公告)日：1979-06-05
申请号：US857356
申请日：1977-12-02
申请人： Helmut Junkermann , Volker Hafner
发明人： Helmut Junkermann , Volker Hafner
IPC分类号： C02F1/28 , C02F1/76 , C02F9/00 , C02B1/14 , C02B1/36
CPC分类号： C02F1/76 , Y10S210/917
摘要： Phenol or phenol-formaldehyde containing waste water is purified with chlorine dioxide by treating the waste water with alkali or alkaline earth metal chlorite in the presence of formaldehyde and the weight ratio of formaldehyde to phenol is between 0.5 to 2:1 and the mole ratio of the sum of phenol + formaldehyde to chlorite is between 1:1.2 to 1:2, whereupon the treated water is decolorized, in a given case in known manner.
摘要翻译：在甲醛存在下，用碱金属或碱土金属亚氯酸盐处理废水，用二氧化氯净化苯酚或酚醛废水，甲醛与苯酚的重量比为0.5〜2:1，摩尔比为苯酚+甲醛与亚氯酸盐的总和为1：1.2至1：2，于是处理水在已知情况下以已知方式脱色。

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