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1. 发明授权

US06395140B1 Method for producing (meth)acrylic acid 失效
标题翻译：（甲基）丙烯酸的制造方法
公开(公告)号：US06395140B1
公开(公告)日：2002-05-28
申请号：US09529995
申请日：2000-04-24
申请人： Holger Herbst , Gerhard Nestler , Ulrich Hammon
发明人： Holger Herbst , Gerhard Nestler , Ulrich Hammon
IPC分类号： B01D334
CPC分类号： C07C51/44 , Y10S203/20 , C07C57/04
摘要： In a process for the preparation of (meth)acrylic acid from a mixture which contains (meth)acrylic acid and a solvent having a boiling point above the boiling point of (meth)acrylic acid by distillation of the mixture in a column which is connected to an evaporator and has a stripping section and a rectifying section, between which the mixture is fed in, and a side take-off for the (meth)acrylic acid, a polymeization inhibitor is fed into the column in the region of the top of the column and in the region of the side take-off, that amount of polymerization inhibitor which is introduced in the region of the top of the column being smaller than the amount introduced in the region of the side take-off.
摘要翻译：在通过连接的柱中蒸馏混合物的混合物中制备（甲基）丙烯酸的方法，该混合物含有（甲基）丙烯酸和沸点高于（甲基）丙烯酸沸点的溶剂）到蒸发器并且具有汽提部分和整流部分，混合物在该蒸馏部分和精馏部分之间输送，并且在（甲基）丙烯酸的侧向排出中，聚合抑制剂在顶部的区域中被供给到塔中并且在侧面起飞的区域中，引入在塔顶部的区域中的聚合抑制剂的量小于在侧向起飞区域中引入的量。

2. 发明授权

US06806385B1 Rectification of (meth)acrylic acid with the addition of a tenside 失效
标题翻译：（甲基）丙烯酸的加成，加入表面活性剂
公开(公告)号：US06806385B1
公开(公告)日：2004-10-19
申请号：US09622916
申请日：2000-09-07
申请人： Ulrich Hammon , Holger Herbst , Gerhard Nestler
发明人： Ulrich Hammon , Holger Herbst , Gerhard Nestler
IPC分类号： C07C5742
CPC分类号： C07C51/44 , C07C51/50 , C07C57/04
摘要： In a process for rectificative isolation of (meth)acrylic acid from a mixture containing, as main components, (meth)acrylic acid and an organic liquid having a higher boiling point than (meth)acrylic acid, the rectification is carried out with the addition of a surfactant.
摘要翻译：在以（甲基）丙烯酸和沸点比（甲基）丙烯酸高的有机液体为主要成分的混合物中进行精馏分离（甲基）丙烯酸的方法中，的表面活性剂。

3. 发明授权

US5637222A Process for the fractional separation of (meth)acrylic acid from a mixture containing (meth)acrylic acid 失效
$Process for the fractional separation of (meth)acrylic acid from a mixture containing (meth)acrylic acid$
标题翻译：从（甲基）丙烯酸的混合物中分级分离（甲基）丙烯酸的方法
公开(公告)号：US5637222A
公开(公告)日：1997-06-10
申请号：US584302
申请日：1996-01-11
申请人： Holger Herbst , Gerhard Nestler , Ulrich Hammon
发明人： Holger Herbst , Gerhard Nestler , Ulrich Hammon
IPC分类号： C07C57/04 , C07C51/44 , C07C57/05 , C07C57/07 , B01D61/16
CPC分类号： C07C51/44
摘要： A process for the fractional separation of (meth)acrylic acid from a mixture containing (meth)acrylic acid, in which (meth)acrylic acid is tapped off from the rectifying column at a point above the level at which the liquid mixture containing (meth)acrylic acid enters the rectifying column, and at at least one point of the rectifying column the reflux liquid descending therein is tapped off from the rectifying column, oligomerized and/or polymerized (meth)acrylic acid present therein is separated and the reflux liquid is subsequently recycled to the rectifying column.
摘要翻译：（甲基）丙烯酸的混合物从（甲基）丙烯酸的混合物中分馏（甲基）丙烯酸的方法，其中（甲基）丙烯酸在高于含有（甲基）丙烯酸的）丙烯酸进入精馏塔，并且在精馏塔的至少一个点处，从其中下降的回流液体从精馏塔中分离，其中存在的低聚和/或聚合的（甲基）丙烯酸被分离，回流液为随后再循环至精馏塔。

4. 发明授权

US06228227B1 Separation of (meth)acrylic acid by rectification 失效
标题翻译：（甲基）丙烯酸的精馏分离
公开(公告)号：US06228227B1
公开(公告)日：2001-05-08
申请号：US09275016
申请日：1999-03-24
申请人： Holger Herbst , Gerhard Nestler , Jerry Darlington , Ulrich Hammon
发明人： Holger Herbst , Gerhard Nestler , Jerry Darlington , Ulrich Hammon
IPC分类号： B01D334
CPC分类号： C07C51/44 , Y10S203/22 , C07C57/04
摘要： In a process for the separation by rectification of (meth)acrylic acid from a mixture containing (meth)acrylic acid and an inert hydrophobic organic liquid having a boiling point higher than that of (meth)acrylic acid as main constituents and also lower aldehydes as secondary constituents, a primary amine and/or a salt thereof are added.
摘要翻译：在由（甲基）丙烯酸和沸点高于（甲基）丙烯酸作为主要成分的惰性疏水性有机液体的混合物中，（甲基）丙烯酸的精馏分离的方法中，添加次级成分，伯胺和/或其盐。

5. 发明授权

US5961790A Separation of (meth) acrylic acid by rectification 失效
标题翻译：（甲基）丙烯酸的精馏分离
公开(公告)号：US5961790A
公开(公告)日：1999-10-05
申请号：US355892
申请日：1994-12-14
申请人： Holger Herbst , Gerhard Nestler , Jerry Darlington , Ulrich Hammon
发明人： Holger Herbst , Gerhard Nestler , Jerry Darlington , Ulrich Hammon
IPC分类号： C07C57/055 , C07C51/44 , C07C51/46 , C07C57/07 , C07C57/075 , B01D3/34
CPC分类号： C07C51/44 , Y10S203/22
摘要： A process for the separation by rectification of (meth)acrylic acid from a mixture containing (meth)acrylic acid and an inert hydrophobic organic liquid having a boiling point higher than that of (meth)acrylic acid as main constituents and also lower aldehydes as secondary constituents, a primary amine and/or a salt thereof are added.
摘要翻译：通过从（甲基）丙烯酸和沸点高于（甲基）丙烯酸的主要成分的沸点的惰性疏水性有机液体的混合物中分离出（甲基）丙烯酸的分离方法，以及作为二级成分，伯胺和/或其盐。

6. 发明授权

US5855743A Process of isolation of (Meth) acrylic acid 失效
标题翻译：分离（甲基）丙烯酸的方法
公开(公告)号：US5855743A
公开(公告)日：1999-01-05
申请号：US902291
申请日：1997-07-29
申请人： Holger Herbst , Ulrich Hammon
发明人： Holger Herbst , Ulrich Hammon
IPC分类号： C07C51/44 , C07C57/07 , B01D3/00
CPC分类号： C07C51/44 , B01D3/225 , Y10S203/09 , Y10S203/11 , Y10S203/22
摘要： A process is provided for the isolation of (meth)acrylic acid from a mixture containing (meth)acrylic acid as the main component and lower aldehydes as secondary components by rectification in a rectification column having a stripping section and a rectification section, wherein the starting mixture containing the (meth)acrylic acid to be isolated by rectification is not fed directly to the rectification column but is first passed into a heated dwell vessel which is connected to the vapor side of the rectification section of the rectification column and in which the starting mixture is kept at the boil and, instead of the starting mixture as such, the bottom liquid of the dwell vessel is fed to the rectification column.
摘要翻译：提供了一种从含有（甲基）丙烯酸作为主要成分的混合物中分离出（甲基）丙烯酸的方法，并且在具有汽提段和精馏段的精馏塔中通过精馏将作为次要成分的低级醛分离，其中起始含有通过精馏分离的（甲基）丙烯酸的混合物不直接进料到精馏塔中，而是首先进入与精馏塔的精馏段的蒸气侧连接的加热的停留容器，其中起始将混合物保持在沸腾状态，而不是起始混合物，停留容器的底部液体被供给至精馏塔。

7. 发明授权

US06512138B1 Preparation of (meth)acrylates 失效
标题翻译：（甲基）丙烯酸酯的制备
公开(公告)号：US06512138B1
公开(公告)日：2003-01-28
申请号：US09567983
申请日：2000-05-10
申请人： Albrecht Dams , Heinrich Aichinger , Holger Herbst , Gerhard Nestler , Jürgen Schröder
发明人： Albrecht Dams , Heinrich Aichinger , Holger Herbst , Gerhard Nestler , Jürgen Schröder
IPC分类号： C07C6952
CPC分类号： C07C67/08 , C07C67/327 , C07C69/54
摘要： The process for the esterification of (meth)acrylic acid with an alkanol in the presence of an esterification catalyst, in which unconverted starting compounds and the (meth)acrylate to be formed are separated off by distillation and an oxyester-containing bottom product is formed and is separated off, and (a) in the bottom product separated off, the oxyesters present are cleaved, if required after the addition of (meth)acrylic acid and/or oligomeric (meth)acrylic acid, directly in the presence of acid catalysts differing from (meth)acrylic acid and/or oligomeric (meth)acrylic acid, and the cleavage products are removed, a cleavage residue remaining, or (b) the oxyesters are first removed by distillation from the cleavage product separated off, a distillation residue remaining, and the oxyesters removed are cleaved, if required after addition of (meth)acrylic acid and/or oligomeric (meth)acrylic acid, in the presence of acid catalysts differing from (meth)acrylic acid and/or oligomeric (meth)acrylic acid, and the cleavage products are removed, a cleavage residue remaining, is carried out in such a way that the cleavage residue obtained in step (a) or the cleavage residue obtained in step (b) is hydrolytically cleaved together with the resulting distillation residue in the presence of water and acids or bases.
摘要翻译：在酯化催化剂存在下，（甲基）丙烯酸与烷醇的酯化反应的方法，其中未转化的起始化合物和待形成的（甲基）丙烯酸酯通过蒸馏和含有含氧酯的底部产物分离出来并分离出来，（a）在分离出的底部产物中，如果需要，在酸催化剂存在下直接加入（甲基）丙烯酸和/或低聚（甲基）丙烯酸后，存在的氧化酯被切割与（甲基）丙烯酸和/或低聚（甲基）丙烯酸不同，除去裂解产物，剩余的裂解残余物或（b）氧酯首先通过蒸馏从分离的裂解产物中除去，蒸馏残余物除去（甲基）丙烯酸和/或低聚（甲基）丙烯酸之外，如果需要，在不同于（甲基）丙烯酸和/或低聚（甲基）丙烯酸的酸催化剂的存在下，甲基）丙烯酸，并且去除裂解产物，残留切割残余物，使得步骤（a）中获得的裂解残基或步骤（b）中获得的裂解残基与在水和酸或碱的存在下产生蒸馏残余物。

8. 发明授权

US5910603A Esterification of (meth)acrylic acid with an alkanol 失效
标题翻译：（甲基）丙烯酸与链烷醇酯化
公开(公告)号：US5910603A
公开(公告)日：1999-06-08
申请号：US701989
申请日：1996-08-23
申请人： Heinrich Aichinger , Matthias Geisendorfer , Holger Herbst , Gerhard Nestler
发明人： Heinrich Aichinger , Matthias Geisendorfer , Holger Herbst , Gerhard Nestler
IPC分类号： C07C27/02 , C07C67/08 , C07C67/327 , C07C67/60 , C07C69/54 , C07C69/52
CPC分类号： C07C67/327 , C07C67/08 , C07C67/60
摘要： In a process for esterifying (meth)acrylic acid with an alkanol in the presence of an acidic esterification catalyst, in which unconverted starting compounds and the (meth)acrylates to be formed are separated off by distillation and an oxyester-containing bottom product is formed, the bottom product is separated off and is heated in the presence of an acid to 150-250.degree. C. and the pressure is adjusted so that the cleavage products formed under the abovementioned conditions from the oxyesters contained in the bottom product evaporate directly. The process can be carried out in the presence of molecular oxygen. Mineral acids, for example sulfuric acid or phosphoric acid and/or alkanesulfonic or arylsulfonic acids, for example methanesulfonic acid or p-toluenesulfonic acid, can be added to the bottom product.
摘要翻译：在酸性酯化催化剂存在下，用链烷醇酯化（甲基）丙烯酸的方法中，其中未转化的起始化合物和待形成的（甲基）丙烯酸酯通过蒸馏分离并形成含有含氧酯的底部产物将底部产物分离并在酸存在下加热至150-250℃，并调节压力，使得在上述条件下由底部产物中含有的含氧酯形成的裂解产物直接蒸发。该方法可以在分子氧的存在下进行。矿物酸，例如硫酸或磷酸和/或链烷磺酸或芳基磺酸，例如甲磺酸或对甲苯磺酸，可以加入到底部产物中。

9. 发明授权

US06207022B1 Purification of crude (meth) acrylic acid 失效
标题翻译：粗制（甲基）丙烯酸的纯化
公开(公告)号：US06207022B1
公开(公告)日：2001-03-27
申请号：US08319667
申请日：1994-10-07
申请人： Toni Dockner , Gerhard Nestler , Holger Herbst , Helmut Lermer , Hans Martan , Herbert Vogel , Herbert Exner
发明人： Toni Dockner , Gerhard Nestler , Holger Herbst , Helmut Lermer , Hans Martan , Herbert Vogel , Herbert Exner
IPC分类号： B01D334
CPC分类号： C07C51/487 , Y10S203/22 , C07C57/04
摘要： Crude (meth)acrylic acid is purified by a process in which a primary amine compound and an organic sulfonic acid are added to the crude (meth)acrylic acid and the latter is then worked up by distillation.
摘要翻译：粗（甲基）丙烯酸通过其中将伯胺化合物和有机磺酸加入到粗（甲基）丙烯酸中的方法纯化，然后将其通过蒸馏处理。

10. 发明授权

US06353130B1 Method for continuous production of (meth)acrylic alkyl esters 失效
标题翻译：连续生产（甲基）丙烯酸烷基酯的方法
公开(公告)号：US06353130B1
公开(公告)日：2002-03-05
申请号：US09830565
申请日：2001-05-07
申请人： Heinrich Aichinger , Holger Herbst , Gerhard Nestler , Jürgen Schröder
发明人： Heinrich Aichinger , Holger Herbst , Gerhard Nestler , Jürgen Schröder
IPC分类号： C07C6952
CPC分类号： C07C67/08 , C07C67/60 , C07C69/54
摘要： A method for continuous production of (meth)acrylic alkyl esters by reacting (meth)acrylic acid with alkanols containing 1-8 C-atoms, whereby raw (meth)acrylic acid containing acetic acid is used as a starting compound and the alkyl acetate that is formed as a by-product is evacuated in an appropriate area.
摘要翻译：使用（甲基）丙烯酸与含有1-8个碳原子的链烷醇反应连续生产（甲基）丙烯酸烷基酯的方法，由此使用含有乙酸的原料（甲基）丙烯酸作为原料化合物，形成副产物在适当的区域被排空。

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