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公开(公告)号：DE10226179A1
公开(公告)日：2003-12-24
申请号：DE10226179
申请日：2002-06-12
Applicant: BASF AG
Inventor： STEIN BERND , BESTE YORK ALEXANDER
Abstract: A method for the production of (meth)acrylate esters (I) by reacting (meth)acrylic acid (II) with alcohols (III) in presence of zeolite(s), in which the zeolite has pore openings of 4-8 Å and a silica/(aluminum, boron or iron oxide) mol ratio of 12-40, and the reaction is carried out at 90-170[deg]C and 0-20 bar with a mol ratio of (III):(II) = 0.6-1.4. An independent claim is also included for a method for the production of (I) from (II) and (III) in presence of acid catalysts, in which the ether formed during esterification undergoes reverse cleavage on a heterogeneous acid catalyst.
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公开(公告)号：DE10336555A1
公开(公告)日：2005-02-24
申请号：DE10336555
申请日：2003-08-05
Applicant: BASF AG
Inventor： BESTE YORK ALEXANDER , SCHOENMAKERS HARTMUT , ARLT WOLFGANG , SEILER MATTHIAS , JORK CARSTEN
Abstract: An extraction-rectification process produces a low-volatile sump fraction and ionic fluid, in a reaction in which the ionic fraction is used as an entrainer. The sump fraction is discharged to an evaporator stage operated at a pressure of less than 500 mbar, thereby separating most of the low-volatile fraction from the ionic fluid. The low-volatile content in the ionic fluid falls to less than 5% wt. Alternatively, the discharging sump fraction is surrendered to a stripper where it is exposed to an inert gas or super-heated steam at ambient pressure or less than 900 mbar. The ionic fluid is surrendered to a further stripper where it is exposed to an inert gas or super-heated steam at ambient pressure or less than 500 mbar. The inert gas is dry air. The ionic fluid yield is returned to the extraction-rectification column. An independent claim is included for a process to separate mixtures of polar and non-polar substances that form azeotropes, or have a narrow boiling point range.
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公开(公告)号：DE10313207A1
公开(公告)日：2004-10-07
申请号：DE10313207
申请日：2003-03-25
Applicant: BASF AG
Inventor： BESTE YORK ALEXANDER , CIPRIAN JUERGEN , MAURER STEPHAN
Abstract: A mixture containing ionic liquid and a substance is purified by separating the present substance by adsorptive separation processes.
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公开(公告)号：BRPI0413017A
公开(公告)日：2006-10-17
申请号：BRPI0413017
申请日：2004-07-15
Applicant: BASF AG
Inventor： BESTE YORK ALEXANDER , SCHOENMAKERS HARTMUT
Abstract: A process for separating azeotropic or close-boiling mixtures by means of an extractive rectification in which an ionic liquid is used as entrainer, wherein a high boiling bottom product is taken off from the column in vapor form via a side offtake.
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Patent Agency Ranking
公开(公告)号：BRPI0413168A
公开(公告)日：2006-10-03
申请号：BRPI0413168
申请日：2004-07-15
Applicant: BASF AG
Inventor： BESTE YORK ALEXANDER , SCHOENMAKERS HARTMUT , ARLT WOLFGANG , SEILER MATHIAS , JORK CARSTEN
Abstract: An extraction-rectification process produces a low-volatile sump fraction and ionic fluid, in a reaction in which the ionic fraction is used as an entrainer. The sump fraction is discharged to an evaporator stage operated at a pressure of less than 500 mbar, thereby separating most of the low-volatile fraction from the ionic fluid. The low-volatile content in the ionic fluid falls to less than 5% wt. Alternatively, the discharging sump fraction is surrendered to a stripper where it is exposed to an inert gas or super-heated steam at ambient pressure or less than 900 mbar. The ionic fluid is surrendered to a further stripper where it is exposed to an inert gas or super-heated steam at ambient pressure or less than 500 mbar. The inert gas is dry air. The ionic fluid yield is returned to the extraction-rectification column. An independent claim is included for a process to separate mixtures of polar and non-polar substances that form azeotropes, or have a narrow boiling point range.
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公开(公告)号：BRPI0518482A2
公开(公告)日：2008-11-18
申请号：BRPI0518482
申请日：2005-11-21
Applicant: BASF AG
Inventor： BESTE YORK ALEXANDER , EGGERSMANN MARKUS , SCHOENMAKERS HARTMUT
Abstract: Processes for chemical reaction and separation in a column comprising, (a) providing one or more reactants to a column; and (b) carrying out at least partially superimposed reactive distillation and extractive distillation on the one or more reactants in the column to form a reaction product mixture comprising at least two components and separate at least one of the components; wherein an ionic liquid is present in the column.
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公开(公告)号：DE10317435A1
公开(公告)日：2004-02-26
申请号：DE10317435
申请日：2003-04-15
Applicant: BASF AG
Inventor： BESTE YORK ALEXANDER , STEIN BERND
Abstract: A method for the production of (meth)acrylate esters (I) by reacting (meth)acrylic acid (II) with alcohol(s) on a heterogeneous catalyst, in which (a) the amount of water in the sump of the azeotropic column is less than 0.5 wt. ppm and/or (b) the amount of (II) in the sump is not more than 60 wt% and/or (c) the catalyst is pretreated with a stabiliser-containing solution.
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公开(公告)号：DE102004056672A1
公开(公告)日：2006-06-01
申请号：DE102004056672
申请日：2004-11-24
Applicant: BASF AG
Inventor： BESTE YORK ALEXANDER , EGGERSMANN MARKUS , SCHOENMAKERS HARTMUT
Abstract: Processes for chemical reaction and separation in a column comprising, (a) providing one or more reactants to a column; and (b) carrying out at least partially superimposed reactive distillation and extractive distillation on the one or more reactants in the column to form a reaction product mixture comprising at least two components and separate at least one of the components; wherein an ionic liquid is present in the column.
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公开(公告)号：DE10336556A1
公开(公告)日：2005-03-10
申请号：DE10336556
申请日：2003-08-05
Applicant: BASF AG
Inventor： BESTE YORK ALEXANDER , SCHOENMAKERS HARTMUT
Abstract: A process for separating azeotropic or close-boiling mixtures by means of an extractive rectification in which an ionic liquid is used as entrainer, wherein a high boiling bottom product is taken off from the column in vapor form via a side offtake.
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