专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 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。

2. 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。

3. 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。

4. 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。

5. 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。

6. 发明授权

US06518452B1 Process for stabilizing (METH)acrylic acid esters against unwanted radical polymerization 有权
标题翻译：稳定（METH）丙烯酸酯以防止不必要的自由基聚合的方法
公开(公告)号：US06518452B1
公开(公告)日：2003-02-11
申请号：US09485192
申请日：2000-02-07
申请人： Heinrich Aichinger , Holger Herbst , Gerhard Nestler
发明人： Heinrich Aichinger , Holger Herbst , Gerhard Nestler
IPC分类号： C07C6952
CPC分类号： C09K15/30 , C07C67/62 , C09K15/18 , C07C69/54
摘要： A method is described of stabilizing (meth)acrylic esters against unwanted free-radical polymerization, in which the mixture to be stabilized has added to it a polymerization inhibitor mixture comprising at least one nitroxyl radical and/or at least one organic compound having at least one nitroso group, and at least one p-phenylenediamine.
摘要翻译：描述了稳定（甲基）丙烯酸酯以防止不需要的自由基聚合的方法，其中要稳定的混合物加入其中包含至少一个硝酰基和/或至少一种有机化合物的聚合抑制剂混合物，其至少具有至少一个亚硝基和至少一个对苯二胺。

7. 发明授权

US5945560A Continuous preparation of alkyl esters of (meth) acrylic acid 失效
标题翻译：连续制备（甲基）丙烯酸的烷基酯
公开(公告)号：US5945560A
公开(公告)日：1999-08-31
申请号：US791054
申请日：1997-01-28
申请人： Gabriele Iffland , Albrecht Dams , Alexander Weck , Heinrich Aichinger , Holger Herbst , Gerhard Nestler , Herbert Exner
发明人： Gabriele Iffland , Albrecht Dams , Alexander Weck , Heinrich Aichinger , Holger Herbst , Gerhard Nestler , Herbert Exner
IPC分类号： B01J27/02 , B01J31/02 , C07B41/12 , C07B61/00 , C07C67/08 , C07C67/54 , C07C69/54 , C07C69/52
CPC分类号： C07C67/08 , C07C67/54
摘要： In a process and an apparatus for the continuous preparation of alkyl esters of (meth)acrylic acid by reacting (meth)acrylic acid with alkanols having from 1 to 5 carbon atoms in a homogeneous, liquid, solvent-free phase at elevated temperature and in the presence of an acid esterification catalyst, in which the (meth)acrylic acid, the alkanol and the catalyst are fed to a reaction zone, the water formed is removed by rectification during a residence time as constituent of a mixture comprising alkanol in a rectification unit superposed on the reaction zone, the distillate thus obtained is separated into an organic phase comprising alkanol and an aqueous phase comprising water, the organic phase is returned to the rectification unit, the reaction mixture is discharged from the reaction zone and conveyed into a distillative separation zone comprising further rectification units and in the latter the alkyl (meth)acrylate formed is separated off.
摘要翻译：在（甲基）丙烯酸的烷基酯连续制备方法和装置中，通过使（甲基）丙烯酸与具有1至5个碳原子的链烷醇在高温和均相，液体，无溶剂相中将（甲基）丙烯酸，链烷醇和催化剂进料到反应区中的酸酯化催化剂的存在，在停留时间内通过精馏除去形成的水，作为在精馏中的链烷醇的混合物的组分单元重叠在反应区上，将由此获得的馏出物分离成包含链烷醇和含水水相的有机相，将有机相返回至精馏单元，将反应混合物从反应区排出并输送至蒸馏分离区包含进一步的精馏单元，后者分离形成的（甲基）丙烯酸烷基酯。

8. 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 ）。

9. 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。

10. 发明授权

US5883288A Continuous preparation of alkyl esters of (meth)acrylic acid 失效
标题翻译：连续制备（甲基）丙烯酸的烷基酯
公开(公告)号：US5883288A
公开(公告)日：1999-03-16
申请号：US791052
申请日：1997-01-28
申请人： Gabriele Iffland , Albrecht Dams , Alexander Weck , Heinrich Aichinger , Holger Herbst , Gerhard Nestler , Herbert Exner , Willi Schmidt , Matthias Geisendorfer , Toni Dockner
发明人： Gabriele Iffland , Albrecht Dams , Alexander Weck , Heinrich Aichinger , Holger Herbst , Gerhard Nestler , Herbert Exner , Willi Schmidt , Matthias Geisendorfer , Toni Dockner
IPC分类号： B01J27/02 , B01J31/02 , C07B61/00 , C07C67/08 , C07C67/54 , C07C69/54 , C07C69/52
CPC分类号： C07C67/08
摘要： In the process for the continuous preparation of alkyl esters of (meth)acrylic acid by reacting (meth)acrylic acid with monohydric alkanols having from 1 to 8 carbon atoms in the presence of an acid esterification catalyst in a reaction zone, there is discharged from the reaction zone a product mixture which comprises the alkyl (meth)acrylate formed, the catalyst and the by-products formed during the course of the esterification having boiling points higher than that of the alkyl (meth)acrylate, and from which the alkyl (meth)acrylate is separated by distillation in a separation zone. The product mixture discharged from the reaction zone is fed to a rectification unit (I), in this unit the product mixture discharged is separated by rectification into at least one product (I) comprising the alkyl ester of (meth)acrylic acid and a product (II) comprising the catalyst, the product (I) is fed to a further rectification unit (II) and in this the alkyl ester of (meth)acrylic acid is separated off by rectification.
摘要翻译：在反应区酸性酯化催化剂存在下，使（甲基）丙烯酸与具有1〜8个碳原子的一元链烷醇反应连续制备（甲基）丙烯酸烷基酯的方法中，所述反应区包含形成的（甲基）丙烯酸烷基酯，在酯化过程中形成的催化剂和副产物的沸点高于（甲基）丙烯酸烷基酯的产物混合物，并且烷基（甲基）丙烯酸酯在分离区中蒸馏分离。将从反应区排出的产物混合物供给到精馏单元（I），在该单元中，排出的产物混合物通过精馏分离成至少一种包含（甲基）丙烯酸的烷基酯的产物（I）和产物（II），将产物（I）进料到另一精馏单元（II）中，通过精馏分离（甲基）丙烯酸的烷基酯。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式