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公开(公告)号：CZ302195A3
公开(公告)日：1996-06-12
申请号：CZ302195
申请日：1995-11-16
Applicant: BASF AG
Inventor： HERBST HOLGER DR , NESTLER GERHARD DR , DARLINGZON JERRY , MARTAN HANS DR
IPC: C07C57/075 , C07C51/44 , C07C57/055 , C07C57/07
Abstract: In a process for purifying crude (meth)acrylic acid, the crude (meth)acrylic acid is worked up by distillation after addition of an organic carboxylic acid hydrazide and, if desired, an organic sulfonic acid.
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公开(公告)号：DE4335172A1
公开(公告)日：1995-04-20
申请号：DE4335172
申请日：1993-10-15
Applicant: BASF AG
Inventor： DOCKNER TONI DR , NESTLER GERHARD DR , HERBST HOLGER DR , LERMER HELMUT DR , MARTAN HANS DR , VOGEL HERBERT DR , EXNER HERBERT DR
IPC: C07C57/04 , C07C51/487 , C07C57/055 , C07C57/07 , C07C57/075 , C07C51/64
Abstract: A process for the purification of crude (meth)acrylic acid in which the crude (meth)acrylic acid is worked up by distillation after addition of a primary amine compound and of an organic sulphonic acid.
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公开(公告)号：DE4414082A1
公开(公告)日：1994-11-03
申请号：DE4414082
申请日：1994-04-22
Applicant: BASF AG
Inventor： HUEBINGER WOLFGANG DR , DUPUIS JACQUES DR , HERBST HOLGER DR , NESTLER GERHARD DR , WICKEL STEFAN DR
Abstract: Isoperibolar calorimeter for measuring the reaction heats of chemical reactions and for determining the time of the reaction start by measuring the temperatures in a reaction vessel and a surrounding thermal bath and recording them on a data-acquisition device, characterised in that a thermometric probe is inserted, centred in a through-bored plug, into the reaction vessel which holds the reaction medium, and this reaction vessel is lowered with the reaction medium and the thermometric probe into the thermal bath, and use of the isoperibolar calorimeter for quality testing, for receptor development and for activity (efficacy) of inhibitors.
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公开(公告)号：MY125609A
公开(公告)日：2006-08-30
申请号：MYPI9605184
申请日：1996-12-10
Applicant: BASF AG
Inventor： DONATH CALVIN F , NESTLER GERHARD DR , AICHINGER HEINRICH DR , HERBST HOLGER DR , DARLINGTON JERRY W , HEIMANN JOHN C , MCGLONE NICOLE E
IPC: B01J27/04 , C07C67/08 , B01J27/16 , C07B61/00 , C07C27/02 , C07C57/04 , C07C67/03 , C07C67/54 , C07C67/60 , C07C69/54
Abstract: IN A PROCESS FOR ESTERIFYING (METH)ACRYLIC ACID WITH AN ALKANOL IN THE PRESENCE OF AN ESTERIFICATION CATALYST IN WHICH UNREACTED STARTING COMPOUNDS AND THE (METH)ACRYLIC ESTER FORMED ARE SEPARATED OFF BY DISTILLATION AND A BOTTOM PRODUCT CONTAINING OXY ESTERS IS OBTAINED, THE BOTTOM PRODUCT IS SEPARATED OFF AND EITHER THE BOTTOM PRODUCT IS DIRECTLY ADMIXED WITH (METH)ACRYLIC ACID AND THE OXY ESTERS PRESENT IN THE BOTTOM PRODUCT ARE THEN DISSOCIATED AT AN ELEVATED TEMPERATURE IN THE PRESENCE OF ACID CATALYSTS DIFFERENT FROM (METH)ACRYLIC ACID, OR THE OXY ESTERS ARE FIRST SEPARATED BY DISTILLATION FROM THE BOTTOM PRODUCT, THE DISTILLATE IS ADMIXED WITH (METH)ACRYLIC ACID AND IS THEN DISSOCIATED AT AN ELEVATED TEMPERATURE IN THE PRESENCE OF ACID CATALYSTS DIFFERENT FROM (METH)ACRYLIC ACID.
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公开(公告)号：MY118758A
公开(公告)日：2005-01-31
申请号：MYPI9605168
申请日：1996-12-09
Applicant: BASF AG
Inventor： DONATH CALVIN F , NESTLER GERHARD DR , AICHINGER HEINRICH DR , HERBST HOLGER DR , DARLINGTON JERRY W , HEIMANN JOHN C , MCGLONE NICOLE E
IPC: B01J27/16 , C07C67/60 , B01J31/02 , C07B61/00 , C07C27/02 , C07C57/04 , C07C67/03 , C07C67/08 , C07C67/54 , C07C69/54
Abstract: IN A PROCESS FOR ESTERIFYING (METH)ACRYLIC ACID WITH AN ALKANOL IN THE PRESENCE OF AN ESTERIFICATION CATALYST IN WHICH UNREACTED STARTING COMPOUNDS AND THE (METH)ACRYLIC ESTER FORMED ARE SEPARATED OFF BY DISTILLATION AND A BOTTOM PRODUCT CONTAINING OXY ESTERS IS OBTAINED, THE BOTTOM PRODUCT IS SEPARATED OFF AND EITHER THE BOTTOM PRODUCT IS DIRECTLY ADMIXED WITH OLIGOMERIC (METH)ACRYLIC ACID AND THE OXY ESTERS PRESENT IN THE BOTTOM PRODUCT ARE DISSOCIATED AT AN ELEVATED TEMPERATURE IN THE PRESENCE OF ACID CATALYSTS DIFFERENT FROM OLIGOMERIC (METH)ACRYLIC ACID, OR THE OXY ESTERS ARE FIRST SEPARATED BY DISTILLATION FROM THE BOTTOM PRODUCT, THE DISTILLATE IS ADMIXED WITH OLIGOMERIC (METH)ACRYLIC ACID AND IS DISSOCIATED AT AN ELEVATED TEMPERATURE IN THE PRESENCE OF ACID CATALYSTS DIFFERENT FROM OLIGOMERIC (METH)ACRYLIC ACID.
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Patent Agency Ranking
公开(公告)号：CZ285212B6
公开(公告)日：1999-06-16
申请号：CZ247694
申请日：1994-10-07
Applicant: BASF AG
Inventor： DOCKNER TONI DR , NESTLER GERHARD DR , HERBST HOLGER DR , LERMER HELMUT DR , MARTAN HANS DR , VOGEL HERBERT DR , EXNER HERBERT DR
IPC: C07C57/04 , C07C51/487 , C07C57/055 , C07C57/07 , C07C57/075
Abstract: A process for the purification of crude (meth)acrylic acid in which the crude (meth)acrylic acid is worked up by distillation after addition of a primary amine compound and of an organic sulphonic acid.
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公开(公告)号：DE19746690A1
公开(公告)日：1999-04-29
申请号：DE19746690
申请日：1997-10-22
Applicant: BASF AG
Inventor： HERBST HOLGER DR , NESTLER GERHARD DR , HAMMON ULRICH DR , DAMS ALBRECHT DR
IPC: C07C51/44 , C07C57/055 , C07C57/07 , C07C57/075
Abstract: In the recovery of (meth)acrylic acid from a mixture containing a higher boiling solvent by distillation in a column connected with evaporators, the column is an enhancer column, the mixture is fed to evaporators and (meth)acrylic acid is discharged at the side of the column.
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公开(公告)号：ES2117349T3
公开(公告)日：1998-08-01
申请号：ES95117892
申请日：1995-11-14
Applicant: BASF AG
Inventor： HERBST HOLGER DR , NESTLER GERHARD DR , DARLINGTON JERRY , MARTAN HANS DR
IPC: C07C57/075 , C07C51/44 , C07C57/055 , C07C57/07 , C07C57/04 , C07C51/50 , C07C51/487
Abstract: In a process for purifying crude (meth)acrylic acid, the crude (meth)acrylic acid is worked up by distillation after addition of an organic carboxylic acid hydrazide and, if desired, an organic sulfonic acid.
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公开(公告)号：DE19701737A1
公开(公告)日：1998-07-23
申请号：DE19701737
申请日：1997-01-20
Applicant: BASF AG
Inventor： AICHINGER HEINRICH DR , FRIED MICHAEL DR , NESTLER GERHARD DR , HERBST HOLGER DR
Abstract: The invention concerns a process for the esterification of (meth)acrylic acid with an alkanol, oxyesters formed as a by-product of esterification being cleaved in turn in an acid-catalysed manner by the addition of monomeric and/or oligomeric (meth)acrylic acid and water.
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公开(公告)号：CZ9602701A3
公开(公告)日：1997-06-11
申请号：CZ270196
申请日：1996-09-16
Applicant: BASF AG
IPC: C07C27/02 , C07C67/08 , C07C67/327 , C07C67/60 , C07C69/54
CPC classification number: C07C67/327 , C07C67/08 , C07C67/60 , C07C69/54
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