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1. 发明授权

US06679939B1 Fractional condensation of a product gas mixture containing acrylic acid 有权
标题翻译：含有丙烯酸的产物气体混合物的分级冷凝
公开(公告)号：US06679939B1
公开(公告)日：2004-01-20
申请号：US09926042
申请日：2001-08-20
申请人： Joachim Thiel , Jürgen Schröder , Gerhard Nestler
发明人： Joachim Thiel , Jürgen Schröder , Gerhard Nestler
IPC分类号： B01D4714
CPC分类号： C07C51/487 , B01D3/14 , B01D3/225 , B01D3/322 , C07C51/43 , C07C51/44 , C07C51/50 , C07C57/04
摘要： In a process for the fractional condensation of an acrylic acid-containing product gas mixture of a gas-phase partial oxidation of C3 precursors of acrylic acid with molecular oxygen under heterogeneous catalysis, the separation column used contains both dual-flow trays and hydraulically sealed cross-flow trays as baffles having separation activity.
摘要翻译：在非均相催化下，丙烯酸C3前体与分子氧的气相部分氧化的含丙烯酸的产物气体混合物的分级缩合的方法中，使用的分离柱包含双流塔盘和液压密封十字流盘作为具有分离活性的挡板。

2. 发明授权

US06617470B1 Method for esterifying (meth)acrylic acid with an alkanol 有权
标题翻译：用链烷醇酯化（甲基）丙烯酸的方法
公开(公告)号：US06617470B1
公开(公告)日：2003-09-09
申请号：US09831349
申请日：2001-05-11
申请人： Heinrich Aichinger , Holger Herbst , Gerhard Nestler , Jürgen Schröder , Stefan Beckmann
发明人： Heinrich Aichinger , Holger Herbst , Gerhard Nestler , Jürgen Schröder , Stefan Beckmann
IPC分类号： C07C6954
CPC分类号： C07C67/08 , C07C67/327 , C07C69/54
摘要： In a process for esterifying (meth)acrylic acid with an alkanol in the presence of an esterification catalyst, in which unconverted starting compounds and (meth)acrylic ester to be formed are separated off by distillation and an oxyester-containing bottom product is formed, the bottom product is first separated off and then the oxyesters contained in it are cleaved in the presence of a relatively long-chain alkylbenzenesulfonic acid at elevated temperatures.
摘要翻译：在酯化催化剂存在下，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出来并形成含有含氧酯的底部产物，首先将底部产物分离，然后在高温下在相对长链烷基苯磺酸存在下将含有的含氧酯切割。

3. 发明授权

US06568406B2 Method of cleaning plant parts for the preparation or processing of (meth)acrylic esters 有权
标题翻译：（甲基）丙烯酸酯的制备或加工清洁工厂零件的方法
公开(公告)号：US06568406B2
公开(公告)日：2003-05-27
申请号：US09509817
申请日：2000-04-18
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： G08B900
CPC分类号： B08B3/08 , C11D7/06 , C11D11/0041 , C11D11/0064
摘要： Plant parts which are used for the production or processing of (meth)acrylic esters are cleaned by (a) emptying the plant parts, (b) flushing the plant parts with aqueous 5 to 50% strength by weight alkali metal hydroxide solution, (c) removing the alkali metal hydroxide solution from the plant parts, (d) if required, washing the plant parts with water and (e) if required, drying the plant parts.
摘要翻译：用于生产或加工（甲基）丙烯酸酯的植物部分通过（a）排空植物部分进行清洁，（b）用5-50％重量的碱金属氢氧化物水溶液冲洗植物部分，（c ）从植物部分去除碱金属氢氧化物溶液，（d）如果需要，用水洗涤植物部分，（e）如果需要，干燥植物部分。

4. 发明授权

US06518374B1 Method of immediately terminating free-radical polymerisation processes 有权
标题翻译：立即终止自由基聚合方法的方法
公开(公告)号：US06518374B1
公开(公告)日：2003-02-11
申请号：US09926417
申请日：2001-10-29
申请人： Heinrich Aichinger , Gerhard Nestler , Jürgen Schröder
发明人： Heinrich Aichinger , Gerhard Nestler , Jürgen Schröder
IPC分类号： C08F238
CPC分类号： C08F2/42
摘要： Free radical polymerizations immediately terminated by a process comprising the addition of an inhibitor solution which contains phenothiazine and at least 50% (w/w) N-alkylpyrrolidone to a system undergoing free radical polymerization, wherein the inhibitor solution also contains p-methoxyphenol (MEHQ).
摘要翻译：通过包括向含有吩噻嗪和至少50％（w / w）N-烷基吡咯烷酮的抑制剂溶液加入到经历自由基聚合的体系中的方法立即终止自由基聚合，其中抑制剂溶液还含有对甲氧基苯酚（MEHQ ）。

5. 发明授权

US06498272B1 Method for producing acrylic acid 有权
标题翻译：制备丙烯酸的方法
公开(公告)号：US06498272B1
公开(公告)日：2002-12-24
申请号：US09914533
申请日：2001-08-30
申请人： Jürgen Schröder , Gerhard Nestler , Klaus Joachim Müller-Engel
发明人： Jürgen Schröder , Gerhard Nestler , Klaus Joachim Müller-Engel
IPC分类号： C07C5142
CPC分类号： C07C51/487 , B01D3/225 , C07C51/43 , C07C51/44 , C07C51/50 , C07C57/04
摘要： In a process for the preparation of acrylic acid, a product gas mixture obtained by catalytic gas-phase oxidation of a C3-precursor of acrylic acid and containing acrylic acid is directly cooled with a quench liquid and then subjected to fractional condensation in a separation column provided with baffles, said product gas mixture ascending into itself and a crude acrylic acid being removed via a side take-off, and the acrylic acid oligomers formed are cleaved and recycled.
摘要翻译：在制备丙烯酸的方法中，通过丙烯酸的C3-前体和含丙烯酸的催化气相氧化获得的产物气体混合物用骤冷液直接冷却，然后在分离塔中进行分级冷凝设置有挡板，所述产物气体混合物自身上升，粗丙烯酸通过侧移除去，形成的丙烯酸低聚物被切割和再循环。

6. 发明授权

US06455732B1 Method for storing and/or transporting pure acrylic acid 失效
标题翻译：储存和/或运输纯丙烯酸的方法
公开(公告)号：US06455732B1
公开(公告)日：2002-09-24
申请号：US09556527
申请日：2000-04-21
申请人： Heinrich Aichinger , Klaus Joachim Müller-Engel , Gerhard Nestler , Jürgen Schröder
发明人： Heinrich Aichinger , Klaus Joachim Müller-Engel , Gerhard Nestler , Jürgen Schröder
IPC分类号： C07C5702
CPC分类号： C07C51/42 , C07C57/04
摘要： Pure acrylic acid is stored and/or transported by a process in which the pure acrylic acid is stored and/or transported as liquid aqueous solution at ≦15° C.
摘要翻译：纯丙烯酸通过其中纯丙烯酸在<= 15℃下作为液体水溶液储存和/或运输的方法储存和/或运输。

7. 发明授权

US06875888B2 Method for the production of esters of unsaturated carboxylic acids 有权
标题翻译：不饱和羧酸酯的制备方法
公开(公告)号：US06875888B2
公开(公告)日：2005-04-05
申请号：US10276318
申请日：2001-05-28
申请人： Gerhard Nestler , Jürgen Schröder
发明人： Gerhard Nestler , Jürgen Schröder
IPC分类号： C07C57/075 , C07C67/03 , C07C213/06 , C07C219/08 , C07D211/94 , C07C61/08 , C07D211/36 , C07D295/00
CPC分类号： C07D211/94 , C07C67/03 , C07C213/06 , C07C69/54 , C07C219/08
摘要： In a process for preparing an ester of an unsaturated carboxylic acid by reacting an ester of the unsaturated carboxylic acid and a C1-C4-alkanol with an alcohol R3OH, where R3 is a C4-C20-alkyl radical, a C5-C7-cycloalkyl radical, a phenyl-C1-C4-alkyl radical or a C2-C12-alkyl radical substituted by at least one NR5R5 group or by from 1 to 3 hydroxyl groups or C1-C4-alkoxyl groups or interrupted by one or more oxygen atoms, where the radicals R5 are, independently of one another, C1-C6-alkyl or together with the nitrogen atom form a 5- to 7-membered heterocyclic ring which may contain a further nitrogen or oxygen atom, in the presence of a transesterification catalyst, the transesterification catalyst used is at least one metal alkanolate containing at least one OR1 group, where R1 is a 2,2,6,6-tetraalkyl-1-oxylpiperidin-4-yl radical.
摘要翻译：在通过使不饱和羧酸和C 1 -C 4 - 链烷醇的酯与醇R 3 OH反应制备不饱和羧酸的酯的方法中，其中R 3是C 4 -C 20烷基 C 5 -C 7环烷基，苯基-C 1 -C 4烷基或被至少一个NR 5 R 5基团取代的C 2 -C 12烷基或1-3个羟基或C 1 -C 3烷基 -C 1-4烷氧基或被一个或多个氧原子间隔，其中基团R 5彼此独立地为C 1 -C 6 - 烷基或与氮原子一起形成5-至7-元杂环，其中可以含有另外的氮或氧原子，在酯交换催化剂存在下，所用的酯交换催化剂是至少一种含有至少一个OR 1基团的链烷醇化物，其中R 1是2,2,6， 6-四烷基-1-氧基哌啶-4-基。

8. 发明授权

US06818791B2 Method for producing higher (meth)acrylic acid esters 失效
公开(公告)号：US06818791B2
公开(公告)日：2004-11-16
申请号：US10450438
申请日：2003-06-18
申请人： Friedrich-Georg Martin , Gerhard Nestler , Jürgen Schröder
发明人： Friedrich-Georg Martin , Gerhard Nestler , Jürgen Schröder
IPC分类号： C07C6952
CPC分类号： C07C67/08 , C07C69/54
摘要： The invention relates to a method for producing (meth)acrylic acid esters by transesterification of the (meth)acrylic acid with a higher alkanol in the presence of an acid catalyst, at least one polymerization inhibitor and one organic solvent that forms an azeotropic mixture with water. The reaction mixture is heated to the boiling point of the mixture in a reactor that comprises a distillation unit with a column and a condenser. The content of the reactor is recirculated via an external evaporator and heated to the boiling point, and the azeotropic mixture is distilled off. The organic solvent forms a reflux and at least a part of the solvent reflux is recirculated between the reactor and the evaporator. The inventive method allows for the production of higher (meth)acrylic acid esters in a reactor with a circulation evaporator without using copper salts as the polymerization inhibitors.

9. 发明授权

US06646155B2 Method for producing esters of &agr;, &bgr;-unsaturated carboxylic acids 有权
标题翻译：制备α，β-不饱和羧酸酯的方法
公开(公告)号：US06646155B2
公开(公告)日：2003-11-11
申请号：US10181966
申请日：2002-08-05
申请人： Reinhard Herzog , Gerhard Nestler , Jürgen Schröder
发明人： Reinhard Herzog , Gerhard Nestler , Jürgen Schröder
IPC分类号： C07C6702
CPC分类号： C07C67/08 , C07C67/327 , Y02P20/582 , C07C69/54
摘要： An ester of an &agr;,&bgr;-unsaturated carboxylic acid is prepared by reacting the carboxylic acid with a C6-C12-alkanol, cyclopentanol or cyclohexanol in the presence of an acidic esterification catalyst and of an entraining agent for removing the water of reaction formed in the esterification, by a process in which the entraining agent used is the olefin on which the alkanol is based.
摘要翻译：通过在酸性酯化催化剂存在下使羧酸与C 6 -C 12烷醇，环戊醇或环己醇反应制备α，β-不饱和羧酸的酯，以及用于除去在通过使用的夹带剂是链烷醇所基于的烯烃的方法进行酯化。

10. 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。

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