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公开(公告)号：DE102005015637A1
公开(公告)日：2006-10-12
申请号：DE102005015637
申请日：2005-04-05
Applicant: BASF AG
Inventor： HEILEK JOERG , MUELLER-ENGEL KLAUS JOACHIM , ADAMI CHRISTOPH , DIETERLE MARTIN
Abstract: Process for removing methacrolein from liquid phase (comprising acrylic acid as a main constituent and target product, and methacrolein as a secondary component) by crystallization, where the acrylic acid is accumulated in the crystals formed and methacrolein in the remaining mother liquor.
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公开(公告)号：DE102005009887A1
公开(公告)日：2006-09-07
申请号：DE102005009887
申请日：2005-03-01
Applicant: BASF AG
Inventor： HEILEK JOERG , MUELLER-ENGEL KLAUS JOACHIM , ADAMI CHRISTOPH , DIETERLE MARTIN
Abstract: Separation of a methracrolein from an acrylic acid, comprises crystallizing and separating the acrylic acid, and leaving the methacrolein in a liquid phase of the mother liquor.
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公开(公告)号：DE102004058907A1
公开(公告)日：2006-06-08
申请号：DE102004058907
申请日：2004-12-07
Applicant: BASF AG
Inventor： FIENE MARTIN , RUST HARALD , MASSONNE KLEMENS , STEGMANN VEIT , HUTTENLOCH OLIVER , HEILEK JOERG
IPC: B01D9/02
Abstract: The invention relates to a process for purifying an ionic liquid, which comprises the steps (a) partial crystallization of the ionic liquid from its melt and (b) separation of the crystals from the residual melt.
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公开(公告)号：MY122594A
公开(公告)日：2006-04-29
申请号：MYPI20002548
申请日：2000-06-07
Applicant: BASF AG
Inventor： ECK BERND , HEILEK JOERG , BAUMANN DIETER , SCHLIEPHAKE VOLKER DR
Abstract: ACRYLIC ACID OR METHACRYLIC ACID IS PURIFIED BY CRYSTALLIZATION TO OBTAIN CRYSTALS AND A MOTHER LIQUOR, BY A PROCESS IN WHICH THE CRYLTALS 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 ARCYLIC ACID OR METHACRYLIC ACID COMPRISES THE ABOVEMENTIONED PURIFICATION PROCESS.
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公开(公告)号：DE10232812A1
公开(公告)日：2004-02-05
申请号：DE10232812
申请日：2002-07-19
Applicant: BASF AG
Inventor： GROPP STEFAN , MUELLER PATRIC , HEILEK JOERG , WEIGL HAGEN
IPC: C07C51/43 , C07B63/00 , C07B41/08 , C07C59/10 , C07C59/105
Abstract: A process for the purification of polymethylolalkanoic acids or monomethylolalkanoic acids comprises oxidation of the corresponding alkanal using an aqueous solution of hydrogen peroxide, crystallization followed by a solid-liquid separation whereby following the solid-liquid separation the mother liquor associated with the resulting crystallizate is diluted with a solvent or solvent mixture. A process for the purification of polymethylolalkanoic acids or monomethylolalkanoic acids of formula (1) comprises oxidation of the corresponding alkanal of formula (2) using an aqueous solution of hydrogen peroxide, crystallization followed by a solid-liquid separation whereby following the solid-liquid separation the mother liquor (M1), associated with the resulting crystallizate (FK1) is diluted with a solvent or solvent mixture (L1) such that the dilute mother liquor (M1) is separated to yield the crystallizate (FK2).
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Patent Agency Ranking
公开(公告)号：DE10223058A1
公开(公告)日：2003-12-11
申请号：DE10223058
申请日：2002-05-24
Applicant: BASF AG
Inventor： HAMMON ULRICH , BAUMANN DIETER , HEILEK JOERG , MUELLER-ENGEL KLAUS JOACHIM , ECK BERND
IPC: B01D9/00 , C07C7/14 , C07C57/07 , C07D207/26 , C07D207/267 , C08G69/24 , C08L39/06
Abstract: Process for the separation of crystals from suspension in a mother liquor comprises addition of the suspension to a wash column having a wall enveloping a process chamber. The wall is of metal and the face away from the process chamber is heated along at least the length of the purified melt zone. A process for the separation of crystals from suspension in a mother liquor comprises: (a) addition of the suspension to a wash column having a wall enveloping a process chamber, (b) feeding of the suspension to the process chamber to form a bed of crystals in the chamber and (c) conveying of the bed of crystals in the process chamber by means of gravity with a counter current flow of a purified melt of the crystals to form a wash front such that the bed of crystals is partitioned into a mother liquor zone and a purified melt zone. The wall is of metal and is heated on the face away from the process chamber along at least the length of the purified melt zone.
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公开(公告)号：DE19926082A1
公开(公告)日：2000-12-14
申请号：DE19926082
申请日：1999-06-08
Applicant: BASF AG
Inventor： ECK BERND , HEILEK JOERG , BAUMANN DIETER , SCHLIEPHAKE VOLKER
Abstract: The invention relates to a method of purifying and producing acrylic acid or methacrylic acid by crystallization. As a result of the crystallization, a crystallized product and a mother liquor is obtained and the crystallized product is washed at a temperature of 15 to 40 DEG C with a wash solution that contains the acid. The invention further relates to a method of producing acrylic acid or methacrylic acid that comprises the above-mentioned purification method.
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公开(公告)号：DE19832962A1
公开(公告)日：2000-01-27
申请号：DE19832962
申请日：1998-07-22
Applicant: BASF AG
Inventor： ECK BERND , HEILEK JOERG , SCHLIEPHAKE VOLKER
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公开(公告)号：DE19718088A1
公开(公告)日：1998-11-05
申请号：DE19718088
申请日：1997-04-29
Applicant: BASF AG
Inventor： ECK BERND , HEILEK JOERG
Abstract: - Crystallisation of a material (I) to be recovered involves (i) evaporation of a fluid (II) from a melt or solution containing (I), (II) and optionally other components; and (ii) condensation or absorption of (II) vapour in a liquid material to form a liquid mixture, in which (I) and (II) are selected from (a) inorganic salts and salts of organic compounds and their solvates, preferably hydrates, in water and/or organic solvents; (b) organic components in a mixture of organic compounds and/or water with close boiling points, where the difference in concentrations of the gas and liquid phases in equilibrium at the crystallisation pressure and temperature is
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公开(公告)号：DE19703651A1
公开(公告)日：1998-08-06
申请号：DE19703651
申请日：1997-01-31
Applicant: BASF AG
Inventor： FRITZ GERHARD DR , WACHE HARRO DR , ECK BERND , HEILEK JOERG , GRUENENWALD THOMAS , GRAUENHORST KARL RAINER
IPC: A61K31/415 , A61K31/495 , A61P31/04 , C07D233/28 , C07D233/54 , C07D233/58 , C07D233/60 , C07D233/62 , C07D233/64 , C07D233/92 , C07D405/06 , C07D409/12 , C07D521/00 , A01N43/50
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