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公开(公告)号：JP2007145857A
公开(公告)日：2007-06-14
申请号：JP2007024607
申请日：2007-02-02
Applicant: Basf Ag , ビーエーエスエフ アクチェンゲゼルシャフトBASF Aktiengesellschaft
IPC: C07C67/54 , C07B61/00 , C07C27/02 , C07C67/08 , C07C67/327 , C07C67/475 , C07C67/60 , C07C69/54
CPC classification number: C07C67/327 , C07C67/08 , C07C67/60 , C07C69/54
Abstract: PROBLEM TO BE SOLVED: To provide a method for esterifying (meth)acrylic acid with an alkanol in the presence of an esterifying catalyst, capable of performing the esterification economically and simply.
SOLUTION: This method for esterifying (meth)acrylic acid is provided by separating unconverted starting materials and a formed (meth)acrylates by distillation to form a bottom product containing oxyesters, separating the bottom product, heating at 150-250°C in the presence of an acid, and adjusting pressure so as to directly evaporating cleaved products formed under the above condition from the oxyesters contained in the bottom product.
COPYRIGHT: (C)2007,JPO&INPITAbstract translation: 待解决的问题：提供一种在酯化催化剂存在下用烷醇酯化（甲基）丙烯酸的方法，其能够经济地和简单地进行酯化。 解决方案：通过蒸馏分离未转化的原料和形成的（甲基）丙烯酸酯，形成含有羟基酯的底部产物，分离底部产物，加热至150-250℃，提供该（甲基）丙烯酸酯化方法 在酸的存在下，调节压力，以直接蒸发在上述条件下形成的裂解产物从底部产物中含有的含氧酯。 版权所有（C）2007，JPO＆INPIT
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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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公开(公告)号：ES2130729T3
公开(公告)日：1999-07-01
申请号：ES96115455
申请日：1996-09-26
Applicant: BASF AG
Inventor： AICHINGER HEINRICH DR , FRIED MICHAEL DR , NESTLER GERHARD DR
Abstract: A process for the esterification of (meth)acrylic acid with an alkanol in presence of a catalyst, in which unreacted starting cpds. and the required ester are sepd. by distn. and a bottom prod. contg. an oxy-ester is obtd. The process involves taking off the bottom prod., sepn. of the oxy-ester by distn. and cleavage of the distillate in presence of acid (I) at elevated temp.
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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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Patent Agency Ranking
公开(公告)号：DE59505830D1
公开(公告)日：1999-06-10
申请号：DE59505830
申请日：1995-09-30
Applicant: BASF AG
Inventor： DOCKNER TONI DR , LERMER HELMUT DR , RAUH ULRICH , NESTLER GERHARD DR
Abstract: In the sepn. of a di(meth)acrylate (I) of a 4-6 C alkandiol (II) from a mixt. of (II), the mono(meth) acrylate (III) and (I) by extn. with an organic solvent (IV) in the presence of water, the mixt. contg. (I) is supplied to the middle of an extn. column and water and (V) are passed through the column in countercurrent. Also claimed is the prepn. (III), esp. butan-1,4-diol monoacrylate (IIIA).
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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：DE19827087A1
公开(公告)日：1999-02-25
申请号：DE19827087
申请日：1998-06-18
Applicant: BASF AG
Inventor： LEHNERT KLAUS , NESTLER GERHARD DR
IPC: C07C51/487 , C07C57/07 , C07C57/075 , C07D239/60 , C07D239/62
Abstract: 2,4,6-Trioxo- and 4,6-dioxo-2-thioxo-hexahydropyrimidine compound(s) (I) is used as reagent in the separation of (meth)acrylic acid (II) from mixtures with aldehydes by distillation or rectification. The pyrimidine compounds (I) are of the formula; X = oxygen (O) or S; R , R = H, phenyl or 1-10C alkyl.
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公开(公告)号：DK0706990T3
公开(公告)日：1999-02-08
申请号：DK95115503
申请日：1995-09-30
Applicant: BASF AG
Inventor： DOCKNER TONI DR , LERMER HELMUT DR , RAUH ULRICH , NESTLER GERHARD DR
Abstract: In the prepn. of a mono(meth)acrylate (I) of a 4-6 C alkandiol (II) from an aq. soln. contg. (I) and (II) by solvent extn., the organic solvent used for extn. is selected from esters (III) of 1-4 C alkanecarboxylic acids and 1-5 C alkanols, simple and mixed 4-8 C dialkyl ethers (IV) and mixts. of these. Also claimed is a method of prepn. and sepg. (I).
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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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