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公开(公告)号：MY136772A
公开(公告)日：2008-11-28
申请号：MYPI20040733
申请日：2004-03-03
Applicant: BASF AG
Inventor： STROEFER ECKHARD DR , GRUETZNER THOMAS , HASSE HANS PROF DR
IPC: C07C45/78 , C07C45/82 , C07C47/058
Abstract: METHOD OF STABILIZING HIGH-CONCENTRATIONN FORMALDEHYDE SOLUTIONS HAVING A CH₂O CONTENT OF > 70% BY WEIGHT AGAINTS PRECIPITATION OF SOLIDS, WHICH COMPRISES HEATING THE HIGH-CONCENTRATION FORMALDEHYDE SOLUTION AT A HEATING RATE OF AT LEAST 5°C/MIN TO A TEMPERATURE OF FROM 80°C TO 200°C IMMEDIATELY AFTER IT HAS BEEN PREPARED AND STORING IT AT A TEMPERATURE IN THIS RANGE.
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公开(公告)号：MY128445A
公开(公告)日：2007-02-28
申请号：MYPI20010185
申请日：2001-01-16
Applicant: BASF AG
Inventor： AUER HEINZ , BEBLING BERND DR , HAMMER HANS , HASSE HANS PROF DR , SAUER FRIEDRICH , VICARI MAXIMILIAN DR , WAGNER GERHARD DR , ADRIAN TILL DR
Abstract: THE INVENTION RELATES TO A PROCESS FOR THE PREPARATION OF ANHYDROUS OR SUBSTANTIALLY ANHYDROUS FORMIC ACID. THE PROCESS HAS THE SPECIAL FEATURE THAT A LIQUID OF THE GENERAL FORMULA I . WHERE THE RADICALS R AND R2 ARE: ALKYLL CYCLOALKYL, ARYL OR ARALKYL GROUPS, OR R’ AND R2 JOINTLY, TOGETHER WITH THE N ATOM, FORM A HETEROCYCLIC 5- OR 6-MEMBERED RING, AND ONLY ONE OF THE RADICALS IS AN ARY1 GROUP, AND WHERE R3 IS HYDROGEN OR A C1-C4-ALKYL GROUP, EMPLOYED AS EXTRACTANT IS ALSO EMPLOYED AS WASHING LIQUID FOR THE OFFGASES PRODUCED IN THE PROCESS.
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公开(公告)号：MY141052A
公开(公告)日：2010-02-25
申请号：MYPI20040732
申请日：2004-03-03
Applicant: BASF AG
Inventor： STROEFER ECKHARD DR , LANG NEVEN DR , STEINBRENNER ULRICH DR , HASSE HANS PROF DR , OTT MICHAEL , GRUETZNER THOMAS
IPC: C07C45/78 , C07C45/00 , C07C45/82 , C07C47/058
Abstract: PROCESS FOR PREPARING HIGH-CONCENTRATION GASEOUS FORMALDEHYDE HAVING A MOLAR CH2O:H2O RATIO OF >= O.6 FROM AN AQUEOUS FORMALDEHYDE SOLUTION BY EVAPORATION OF AT LEAST PART OF THE SOLUTION, IN WHICH THE AQUEOUS FORMALDEHYDE SOLUTION IS HEATED TO A VAPORIZATION TEMPERATURE T AND THE GAS PHASE FORMED IS TAKEN OFF, WHEREIN THE EVAPORATION TEMPERATURE T OBEYS THE RELATIONSHIP:
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公开(公告)号：MY131970A
公开(公告)日：2007-09-28
申请号：MYPI20010183
申请日：2001-01-16
Applicant: BASF AG
Inventor： AUER HEINZ , XDFLING BERND BE DR , HAMMER HANS , HASSE HANS PROF DR , SAUER FRIEDRICH , VICARI MAXIMILIAN DR , ADRIAN TILL DR
Abstract: THE INVENTION RELATES TO A PROCESS FOR OBTAINING ANHYDROUS OR SUBSTANTIALLY ANHYDROUS FORMIC ACID, IN WHICH FIRSTLY AQUEOUS FORMIC ACID IS PREPARED BY HYDROLYSIS OF METHYL FORMATE AND IS FREED FROM WATER IN THE SUBSEQUENT WORK-UP. THE PROCESS HAS THE SPECIAL FEATURE THAT STEAM, WHICH IS EMPLOYED FOR THE HYDROLYSIS OF METHYL FORMATE AND FOR HEATING A DISTILLATION COLUMN SERVING FOR WORK-UP, IS ALSO USED AS STRIPPING STEAM FOR WASTE-WATER STRIPPING. THE STRIPPED WASTE WATER IS PRODUCED DURING WORK-UP.
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公开(公告)号：AT253543T
公开(公告)日：2003-11-15
申请号：AT00111802
申请日：2000-06-06
Applicant: BASF AG
Inventor： STROEFER ECKHARD DR , SCHOLL STEPHAN DR , HASSE HANS PROF DR
IPC: B01D1/22 , C07B63/00 , C07C29/80 , C07C41/56 , C07C43/303 , C07C45/82 , C07C47/04 , C07C47/058
Abstract: A method for reacting a solution containing a mixture of at least two chemicals in chemical equilibrium with other chemical(s) involves: (a) separating the solution into at least two fractions, enriched in the various compounds relative to the equilibrium concentrations; and (b) reacting one fraction with the other reactant(s) before equilibrium is completely restored. A method for reacting a solution containing a mixture of at least two chemicals in chemical equilibrium with other chemical(s) involves: (1) separating the solution into at least two fractions, enriched in the various compounds relative to the equilibrium concentrations; and (2) reacting one fraction with the other reactant(s) before equilibrium is completely restored. Excluded is the reaction of a formaldehyde solution, containing polyoxymethylene glycols and optionally monomeric formaldehyde and/or methylene glycol, with aniline in presence of an acid catalyst.
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Patent Agency Ranking
公开(公告)号：MY142097A
公开(公告)日：2010-09-15
申请号：MYPI20024126
申请日：2002-11-05
Applicant: BASF AG
Inventor： STROFER ECKHARD DR , SOHN MARTIN DR , HASSE HANS PROF DR , SCHILLING KLEMENS
Abstract: IN AN AQUEOUS FORMALDEHYDE SOLUTION COMPRISING FORMALDEHYDE IN THE FORM OF MONOMERIC FORMALDEHYDE, METHYLENE GLYCOL AND POLYOXYMETHYLENE GLYCOLS IN A TOTAL CONCENTRATION X OF ≥65% BY WEIGHT, THE MEAN MOLAR MASS M OF THE POLYOXYMETHYLENE GLYCOLS IS, AS A FUNCTION OF THE FORMALDEHYDE CONCENTRATION, EQUAL TO OR LESS THAN THE VALUES GIVEN BY EQUATION I:. WHERE:
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公开(公告)号：MY137873A
公开(公告)日：2009-03-31
申请号：MYPI20045310
申请日：2004-12-22
Applicant: BASF AG
Inventor： SIEGERT MARKUS DR , LANG NEVEN DR , STROEFER ECKHARD DR , STAMMER ACHIM DR , FRIESE THORSTEN , HASSE HANS PROF DR
IPC: C07D323/06
Abstract: A process for removing trioxane from a use stream I of formaldehyde, trioxane and water, by a) providing a use stream I of formaldehyde as the main component and trioxane and water as the secondary components, b) mixing the use stream I with a recycle stream VII to obtain a feed stream Ia, c) distilling the use stream Ia in a first distillation stage to obtain a stream II of formaldehyde as the main component and water as the secondary component, and a stream III of trioxane as the main component and water and formaldehyde as the secondary components, d) distilling the stream III in a second distillation stage having a pressure higher than in the first distillation stage, to obtain a stream IV of trioxane and a stream V of trioxane as the main component and water and formaldehyde as the secondary components, e) distilling the stream V in a third distillation stage to obtain a stream VI of water and the recycle stream VII of trioxane as the main component and water and formaldehyde as the secondary components.
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公开(公告)号：MY136296A
公开(公告)日：2008-09-30
申请号：MYPI20010197
申请日：2001-01-17
Applicant: BASF AG
Inventor： AUER HEINZ , BEBLING BERND DR , HAMMER HANS , HASSE HANS PROF DR , SAUER FRIEDRICH , VICARI MAXIMILIAN DR , WAGNER GERHARD DR , ADRIAN TILL DR
Abstract: THE INVENTION RELATES TO A PROCESS FOR OBTAINING ANHYDROUS OR SUBSTANTIALLY ANHYDROUS FORMIC ACID IN WHICH, DURING THE WORK-UP, A COMPOUND OF THE GENERAL FORMULA 1 WHERE THE RADICALS R1 AND R2 ARE ALKYL,CYCLOALKYL, ARYL OR ARALKYL GROUPS, OR R1 AND R2 JOINTLY, TOGETHER WITH THE N ATOM, FROM A HETEROCYCLIC 5-OR 6-MEMBERED RING, AND ONLY ONE OF THE RADICALS IS AN ARYL GROUP, AND WHERE R3 IS HYDROGEN OR A C1-C4-ALKYL GROUP,IS EMPLOYED SIMULTANEOUSLY AS EXTRACTANT FOR FORMIC ACID AND AS ANTIFOAM FOR A DISTILLATION PROCESS.FIG.3
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公开(公告)号：MY128642A
公开(公告)日：2007-02-28
申请号：MYPI20010228
申请日：2001-01-18
Applicant: BASF AG
Inventor： AUER HEINZ , BESSLING BERND DR , HAMMER HANS , HASSE HANS PROF DR , SAUER FRIEDRICH , VICARI MAXIMILIAN DR , WAGNER GERHARD DR , ADRIAN TILL DR
IPC: C07C53/02 , C07C51/09 , C07C51/44 , C07C51/48 , C22C14/00 , C22C19/05 , C22C38/00 , C22C38/42 , C22C38/44
Abstract: THE INVENTION RELATES TO AN APPARATUS FOR THE PREPARATION OF ANHYDROUS OR SUBSTANTIALLY ANHYDROUS FOMIC ACID.THIS APPARATUS IS CONSTRUCTED OF SUBSTANTIALLY ZIRCONIUM - FREE MATERIALS .THE ANTICORROSION AGENT EMPLOYED IS A LIQUID OF THE GENERAL FORMUILA 1WHERE THE RADICALS R¹ AND R² ARE ALKYL,CYCLOALKYL, ARYL OR ARALKYL GROUPS, OR R¹ AND R² JOINTLY, TOGETHER WITH THE N ATOM, FROM A HETEROCYCLIC 5-OR 6-MEMBERED RING, AND ONLY ONE OF THE RADICALS IS AN ARYL GROUP, AND WHERE R³ IS HYDROGEN OR A C₁-C₄-ALKYL GROUP.(FIG 2)
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公开(公告)号：ES2209722T3
公开(公告)日：2004-07-01
申请号：ES00111802
申请日：2000-06-06
Applicant: BASF AG
Inventor： STRIFER ECKHARD DR , SCHOLL STEPHAN DR , HASSE HANS PROF DR
IPC: B01D1/22 , C07B63/00 , C07C29/80 , C07C41/56 , C07C43/303 , C07C45/82 , C07C47/04 , C07C47/058
Abstract: A method for reacting a solution containing a mixture of at least two chemicals in chemical equilibrium with other chemical(s) involves: (a) separating the solution into at least two fractions, enriched in the various compounds relative to the equilibrium concentrations; and (b) reacting one fraction with the other reactant(s) before equilibrium is completely restored. A method for reacting a solution containing a mixture of at least two chemicals in chemical equilibrium with other chemical(s) involves: (1) separating the solution into at least two fractions, enriched in the various compounds relative to the equilibrium concentrations; and (2) reacting one fraction with the other reactant(s) before equilibrium is completely restored. Excluded is the reaction of a formaldehyde solution, containing polyoxymethylene glycols and optionally monomeric formaldehyde and/or methylene glycol, with aniline in presence of an acid catalyst.
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