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公开(公告)号：DE19627847A1
公开(公告)日：1998-01-15
申请号：DE19627847
申请日：1996-07-10
Applicant: BASF AG
Inventor： ECK BERND , MACHHAMMER OTTO DR , PROLL THEO DR , SCHLIEPHAKE VOLKER DR
Abstract: Disclosed is a method of preparing acrylic acid or methacrylic acid by: (a) preparing a gaseous product mixture having essentially the composition of a reaction mixture of catalytic gas-phase oxidation of C3/C4 alkanes, alkenes, alkanols and/or alkanals and/or precursors thereof to form acrylic acid or methacrylic acid, characterized by (b) condensation of the product mixture, (c) crystallization of the acrylic acid or methacrylic acid from the solution obtained in stage (b), and (d) extraction of the resulting crystals from the mother liquor.
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公开(公告)号：CA2250806A1
公开(公告)日：1998-01-15
申请号：CA2250806
申请日：1997-06-24
Applicant: BASF AG
Inventor： MUELLER-ENGEL KLAUS JOACHIM , NESTLER GERHARD , ECK BERND , LEHNERT KLAUS
IPC: C07C57/04 , C07C51/43 , C07C57/07 , C07C57/075
Abstract: The invention concerns a process for purifying by crystallization crude acrylic acid containing dibenzo-1,4-thiazine, the diacrylic acid content of the crude acrylic acid being set at a higher value before crystallization.
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公开(公告)号：CZ303896B6
公开(公告)日：2013-06-12
申请号：CZ20023376
申请日：2001-04-04
Applicant: BASF AG
Inventor： ECK BERND , BAUMANN DIETER , HEILEK JOERG , MUELLER-ENGEL KLAUS JOACHIM
Abstract: Zpusob cistení taveniny surové kyseliny akrylové, pri kterém se tato surová kyselina mení za pusobení nízkých teplot na suspenzi surové kyseliny akrylové, sestávající se z krystalu kyseliny akrylové a zbytkové taveniny, pricemz krystaly kyseliny akrylové v této suspenzi se zbavují ulpívající zbytkové taveniny na promývací kolone. Krystaly cistsí kyseliny akrylové v suspenzi surové kyseliny akrylové se vytvárejí za prítomnosti vody. Promývací kolona vyuzívá nucený transport krystalu kyseliny akrylové a jako promývací kapalina se pouzívá tavenina krystalu kyseliny akrylové, vycistených na promývací kolone.
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公开(公告)号：CZ298792B6
公开(公告)日：2008-01-30
申请号：CZ2000885
申请日：1998-09-09
Applicant: BASF AG
Inventor： ECK BERND , MACHHAMMER OTTO , PROLL THEO , SCHLIEPHAKE VOLKER , THIEL JOACHIM , BROELLOS KLAUS
Abstract: Zpusob výroby kyseliny akrylové nebo metakrylové výrobou plynné smesi produktu, která má v podstatesložení reakcní smesi z katalytické oxidace v plynné fázi alkanu, alkenu, alkanolu a/nebo alkanalu se 3 nebo 4 uhlíkovými atomy a/nebo jejich predstupnu na kyselinu akrylovou, prípadne kyselinu metakrylovou. Oddelení kyseliny akrylové nebo metakrylové z plynné smesi produktu se pritom provádí zpusobem, který obsahuje následující kroky: a) kondenzace plynné smesi produktu, b) krystalizace kyseliny akrylové nebo kyseliny metakrylové z roztoku získaného ve stupni a), c) oddelení získaných krystalu z matecného louhu stupne b) a d) zpetné uvedení nejméne cásti matecného louhu ze stupne c) do stupne a).
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Patent Agency Ranking
公开(公告)号：SA1862B1
公开(公告)日：2007-07-31
申请号：SA01220077
申请日：2001-04-24
Applicant: BASF AG
Inventor： ECK BERND , BAUMANN DIETER , HEILEK JORG , -ENGEL KLAUS JOACHIM MULLER
IPC: C07C51/42
Abstract: الملخص: يتعلقالاختراعالحاليبعملية process لتنقية purification مادةذائبة melt منحمض acrylic خام،فيهاتحولالمادةالذائبةلحمض acrylic الخام،تحتتأثيردرجاتحرارةمنخفضة،إلىمعلقحمض acrylic خاميتكونمنبلوراتحمض acrylic ومادةذائبةمتخلفة،وتصبحبلوراتحمض acrylic فيمعلق- acrylic الخامخاليةمنمادةذائبةمتخلفةمتبقيةفيعمودغسيل،يتمإنتاجبلوراتحمض acrylic منمعلقحمض acrylic الخامفيوجودالماء،ويكونعمودالغسيلهوعمودغسيلبهانتقالمدفوعلبلورات- acrylic ويكونسائلالغسيلالمستخدمهوالمادةالذائبةمنبلوراتحمض acrylic المنقاةفيعمودالغسيل.
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公开(公告)号：DE50210277D1
公开(公告)日：2007-07-19
申请号：DE50210277
申请日：2002-05-02
Applicant: BASF AG
Inventor： HAMMON ULRICH , ECK BERND , BAUMANN DIETER , HEILEK JOERG , MUELLER-ENGEL KLAUS JOACHIM
IPC: C07C51/43 , C07C51/47 , C07C57/04 , C07C57/07 , C07D207/26 , C07D207/267
Abstract: The invention relates to a method for purifying a raw melt of at least one monomer by crystallization, wherein suspension crystallization is initially used and the resulting remaining melt or the suspension crystals that have been molten once again and separated are subjected to a mechanical separation operation before undergoing subsequent purification by crystallization.
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公开(公告)号：AU2006303219A1
公开(公告)日：2007-04-26
申请号：AU2006303219
申请日：2006-10-19
Applicant: BASF AG
Inventor： ANDERS JOACHIM-THIERRY , MELDER JOHANN-PETER , CLAUSEN IVEN , LICHTFERS UTE , BRETTSCHNEIDER OLE , ECK BERND , ASPRION NORBERT
IPC: B01D53/14
Abstract: A description is given of an absorption medium for removing carbon dioxide from gas streams which comprises aqueous solution of an amine of the formula I HNR2 (I) where one or both radicals R are and the other radical R is hydrogen. The absorption medium is distinguished by particular oxidation resistance.
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公开(公告)号：DE50101261D1
公开(公告)日：2004-02-05
申请号：DE50101261
申请日：2001-01-24
Applicant: BASF AG
Inventor： DE DECKER EMILE , BASTIAENSEN ERIK , BAUMANN DIETER , ECK BERND , HEILEK JOERG
Abstract: Purification of (meth)acrylic acid by crystallisation is carried out using a combination of >=2 different dynamic crystallisation processes.
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公开(公告)号：DE50004737D1
公开(公告)日：2004-01-22
申请号：DE50004737
申请日：2000-05-31
Applicant: BASF AG
Inventor： ECK BERND , HEILEK JOERG , BAUMANN DIETER , SCHLIEPHAKE VOLKER
Abstract: Acrylic acid or methacrylic acid is purified by crystallization to obtain crystals and a mother liquor, by a process in which the crystals are washed with a wash liquid containing the acid and having a temperature from 15 to 40° C. Furthermore, a process for the preparation of acrylic acid or methacrylic acid comprises the abovementioned purification process.
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