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公开(公告)号：CZ9900073A3
公开(公告)日：1999-05-12
申请号：CZ7399
申请日：1997-07-09
Applicant: BASF AG
Inventor： ECK BERND , MACHHAMMER OTTO , PROLL THEO , SCHLIEPHAKE VOLKER
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公开(公告)号：BRPI0414690A
公开(公告)日：2006-11-28
申请号：BRPI0414690
申请日：2004-09-18
Applicant: BASF AG
Inventor： FER FRANK H , HAREMZA SYLKE , WAGENBLAST GERHARD , SCHLIEPHAKE VOLKER , JOGER ULRICH
Abstract: Process for stabilizing polymerizable compounds to polymerization during working-up, storage and/or transport, in which at least one free radical scavenger which contains at least two glycine units is used, with the proviso that the free radical scavenger is not selected from ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), trans-1,2-cyclohexanediaminetetraacetic acid (CYDTA) and the alkali metal and alkaline earth metal salts thereof.
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公开(公告)号：BRPI0413297A
公开(公告)日：2006-10-10
申请号：BRPI0413297
申请日：2004-07-17
Applicant: BASF AG
Inventor： SCHLIEPHAKE VOLKER , HAMMON ULRICH , BECHER ROLF-DIETER , MUELLER-ENGEL KLAUS JOACHIM
Abstract: Process for operating a continuous heterogeneously catalyzed gas phase partial oxidation of at least one organic compound using compressed air as the oxygen source which is filtered before its compression.
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44.发明专利
公开(公告)号：AU2003219099A1
公开(公告)日：2003-12-12
申请号：AU2003219099
申请日：2003-03-26
Applicant: BASF AG
Inventor： HOFER FRANK , HAREMZA SYLKE , WAGENBLAST GERHARD , SCHLIEPHAKE VOLKER , JAGER ULRICH , SCHRODER JURGEN , KELLER HARALD , DIELEMAN CEDRIC
IPC: C07C51/50 , C07C67/62 , C07C45/86 , C07C253/32 , C07C57/075 , C07C69/54
Abstract: The invention relates to the use of aldoximes, ketoximes which are not derived from quinones, hydroxime acid esters, and N-acyl-hydroxylamine derivatives for stabilising ethylenically unsaturated compounds containing oxygen and/or nitrogen, such as (meth)acrylic acid (esters). Co-stabilisers, such as transition metal salts, phenols, quinones, or hydroquinones, N-oxyls, aromatic amines or phenylenediamines, urea derivatives, compounds containing phosphorus, compounds containing sulphur, and sulfonamides, can be used with the above-mentioned substances. Preferably, a gas containing oxygen, such as air, is present.
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公开(公告)号：AU2003218684A1
公开(公告)日：2003-09-22
申请号：AU2003218684
申请日：2003-03-04
Applicant: BASF AG
Inventor： DIEHL VOLKER , JAGER ULRICH , SCHRODER JURGEN , MULLER-ENGEL KLAUS JOACHIM , SCHLIEPHAKE VOLKER , HAMMON ULRICH
Abstract: In process for cleaning tray columns which are used for the purposes of rectifiying liquids comprising (meth)acrylic compounds, a basic liquid is conveyed downward through the tray column and a gas is passed through the column in countercurrent to the basic liquid at an average gas phase differential pressure over all trays of at least 0.5 mbar/tray.
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Patent Agency Ranking
公开(公告)号：ES2168664T3
公开(公告)日：2002-06-16
申请号：ES97938814
申请日：1997-07-09
Applicant: BASF AG
Inventor： ECK BERND , MACHHAMMER OTTO , PROLL THEO , SCHLIEPHAKE VOLKER , MULLER-ENGEL KLAUS JOACHIM
Abstract: A process for preparing acrylic acid or methacrylic acid comprises(a) preparing a gaseous product mixture having essentially the composition of a reaction mixture of the 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) condensing said product mixture,(c) crystallizing acrylic acid or methacrylic acid from the solution obtained in step (b), and(d) removing the resulting crystals from the mother liquor.
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公开(公告)号：DE59803651D1
公开(公告)日：2002-05-08
申请号：DE59803651
申请日：1998-09-09
Applicant: BASF AG
Inventor： ECK BERND , MACHHAMMER OTTO , PROLL THEO , SCHLIEPHAKE VOLKER , THIEL JOACHIM , BROELLOS KLAUS
Abstract: A process for preparing acrylic acid or methacrylic acid comprises preparing a gaseous product mixture having essentially the composition of a reaction mixture of the catalytic gas phase oxidation of C3-/C4-alkanes, -alkenes, -alkanols and/or -alkanals and/or precursors thereof to form acrylic acid or methacrylic acid. The product is removed from the gaseous product mixture by a process comprising the following steps:(a) condensing said gaseous product mixture,(b) crystallizing acrylic acid or methacrylic acid from the solution obtained in step (a),(c) removing the resulting crystals from the mother liquor, and(d) recycling at least a portion of said mother liquor from step (c) into step (a).
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公开(公告)号：DE59706057D1
公开(公告)日：2002-02-21
申请号：DE59706057
申请日：1997-07-09
Applicant: BASF AG
Inventor： ECK BERND , MACHHAMMER OTTO , PROLL THEO , SCHLIEPHAKE VOLKER , MUELLER-ENGEL JOACHIM
Abstract: A process for preparing acrylic acid or methacrylic acid comprises(a) preparing a gaseous product mixture having essentially the composition of a reaction mixture of the 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) condensing said product mixture,(c) crystallizing acrylic acid or methacrylic acid from the solution obtained in step (b), and(d) removing the resulting crystals from the mother liquor.
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公开(公告)号：CZ2001271A3
公开(公告)日：2001-06-13
申请号：CZ2001271
申请日：1999-07-21
Applicant: BASF AG
Inventor： ECK BERND , HEILEK JOERG , SCHLIEPHAKE VOLKER , PROLL THEO , BROELLOS KLAUS , MACHHAMMER OTTO , THIEL JOACHIM
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公开(公告)号：CZ20010271A3
公开(公告)日：2001-06-13
申请号：CZ20010271
申请日：1999-07-21
Applicant: BASF AG
Inventor： ECK BERND , HEILEK JOERG , SCHLIEPHAKE VOLKER , PROLL THEO , BROELLOS KLAUS , MACHHAMMER OTTO , THIEL JOACHIM
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