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公开(公告)号：WO03042151A8
公开(公告)日：2004-06-24
申请号：PCT/EP0212491
申请日：2002-11-08
Applicant: BASF AG , WARTINI ALEXANDER , DERNBACH MATTHIAS , SCHROEDER JUERGEN , MARTIN FRIEDRICH-GEORG , SIRCH TILMAN
Inventor： WARTINI ALEXANDER , DERNBACH MATTHIAS , SCHROEDER JUERGEN , MARTIN FRIEDRICH-GEORG , SIRCH TILMAN
Abstract: The invention relates to a method for producing (meth) acrylic acid esters of polyhydric alcohols by reacting (meth) acrylic acid and the corresponding polyhydric alcohols in the presence of at least one acid catalyst and, optionally, of at least one polymerization inhibitor and, optionally, in the presence of a solvent, whereby the polyhydric alcohol that is used has a content of bound formaldehyde of less than 500 ppm.
Abstract translation: 一种通过（甲基）丙烯酸的反应制备的多元醇的（甲基）丙烯酸酯和在至少一种酸性催化剂的存在下，相应的多元醇和任选的至少一种聚合抑制剂和任选地在溶剂的存在下，其中使用的多元醇具有的结合的内容的处理 包括下500ppm的甲醛。
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公开(公告)号：BR9810471A
公开(公告)日：2000-09-19
申请号：BR9810471
申请日：1998-06-26
Applicant: BASF AG
Inventor： HENNIG GUNNAR , SCHRAUT ARMIN , MARTIN FRIEDRICH-GEORG , ULBRICH MICHAEL-DIETER , BAUR KARL GERHARD , THIESSEN FRITZ
Abstract: The invention relates to a method for producing alkyl(meth)acrylate by continuous reaction of an aqueous solution containing (meth)acrylic acid obtained directly from gas-phase oxidation by reacting with a straight-chain or branched alkanol with 1 to 6 C atoms or a mixture of two or more thereof in the presence of an esterification catalyst. The inventive method is characterized in that alkanol is introduced into aqueous solution containing (meth)acrylic acid in the form of a gas.
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公开(公告)号：CZ82899A3
公开(公告)日：1999-06-16
申请号：CZ82899
申请日：1997-09-18
Applicant: BASF AG
Inventor： MARTIN FRIEDRICH-GEORG , SCHRAUT ARMIN , WEKERLE JOSEF
Abstract: In the preparation of esters of acrylic or methacrylic acid by esterification with alcohols, the interfering deposits formed on the apparatus parts by relatively high molecular weight by-products can be avoided, removed or lessened by allowing a liquid partly or wholly consisting of the alcohol used for the esterification to act on the deposits, fouled apparatus parts or on the surfaces of the apparatus parts on which deposits are easily formed, with preference being given to wetting the deposits or surfaces using suitable nozzles or cleaning sprayers.
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公开(公告)号：AU8801698A
公开(公告)日：1999-01-19
申请号：AU8801698
申请日：1998-06-26
Applicant: BASF AG
Inventor： HENNIG GUNNAR , SCHRAUT ARMIN , MARTIN FRIEDRICH-GEORG , ULBRICH MICHAEL-DIETER , BAUR KARL GERHARD , THIESSEN FRITZ
Abstract: The invention relates to a method for producing alkyl(meth)acrylate by continuous reaction of an aqueous solution containing (meth)acrylic acid obtained directly from gas-phase oxidation by reacting with a straight-chain or branched alkanol with 1 to 6 C atoms or a mixture of two or more thereof in the presence of an esterification catalyst. The inventive method is characterized in that alkanol is introduced into aqueous solution containing (meth)acrylic acid in the form of a gas.
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公开(公告)号：DE19709471A1
公开(公告)日：1998-09-10
申请号：DE19709471
申请日：1997-03-07
Applicant: BASF AG
Inventor： SCHRAUT ARMIM DR , ULBRICH MICHAEL-DIETER , MARTIN FRIEDRICH-GEORG
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Patent Agency Ranking
公开(公告)号：DE59707073D1
公开(公告)日：2002-05-23
申请号：DE59707073
申请日：1997-09-18
Applicant: BASF AG
Inventor： MARTIN FRIEDRICH-GEORG , SCHRAUT ARMIN , WEKERLE JOSEF
Abstract: In the preparation of esters of acrylic or methacrylic acid by esterification with alcohols, the interfering deposits formed on the apparatus parts by relatively high molecular weight by-products can be avoided, removed or lessened by allowing a liquid partly or wholly consisting of the alcohol used for the esterification to act on the deposits, fouled apparatus parts or on the surfaces of the apparatus parts on which deposits are easily formed, with preference being given to wetting the deposits or surfaces using suitable nozzles or cleaning sprayers.
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公开(公告)号：DE19836367A1
公开(公告)日：2000-02-17
申请号：DE19836367
申请日：1998-08-11
Applicant: BASF AG
Inventor： HENNIG GUNNAR , BAUR KARL GERHARD , MARTIN FRIEDRICH-GEORG
IPC: C07C51/487 , C07C57/075 , C07C51/50 , C07C67/08 , C08G63/00
Abstract: A method for complexing 2-6C carboxylic acids (I) involves bringing an acid phase containing (I) into contact with a phase containing amine(s) with boiling point(s) higher than that of (I) as complexing agent(s), to give a complex with a b.pt. higher than that of some of the components in the acid phase. Independent claims are also included for: (i) a method for isolating (I) by treating a gaseous carboxylic acid phase with a liquid complexing phase as above, in which (a) at least some of the components other than (I) in the acid phase are separated as residual gas by heating the complex to a separation temperature at which the complex is still liquid and (b) at least part of the acid (I) is separated as gas in a temperature range within which the complex undergoes cleavage and the complexing phase is liquid; (ii) a process for the production of carboxylate esters by esterification of acids (I) isolated by the above method.
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公开(公告)号：BR9712060A
公开(公告)日：1999-08-24
申请号：BR9712060
申请日：1997-09-18
Applicant: BASF AG
Inventor： MARTIN FRIEDRICH-GEORG
Abstract: In the preparation of esters of acrylic or methacrylic acid by esterification with alcohols, the interfering deposits formed on the apparatus parts by relatively high molecular weight by-products can be avoided, removed or lessened by allowing a liquid partly or wholly consisting of the alcohol used for the esterification to act on the deposits, fouled apparatus parts or on the surfaces of the apparatus parts on which deposits are easily formed, with preference being given to wetting the deposits or surfaces using suitable nozzles or cleaning sprayers.
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公开(公告)号：CA2282492A1
公开(公告)日：1998-09-17
申请号：CA2282492
申请日：1998-03-05
Applicant: BASF AG
Inventor： ULBRICH MICHAEL-DIETER , SCHRAUT ARMIN , MARTIN FRIEDRICH-GEORG
Abstract: The invention relates to a method for extracting an aqueous solution containing (meth)acrylic acid. Said solution is brought into contact with a solution containing at least one extracting agent which can be converted into (meth)acrylic acid and forms a miscibility gap with the aqueous solution to produce an organic phase containing (meth)acrylic acid and extraction agent and an aqueous phase.
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公开(公告)号：AU4383597A
公开(公告)日：1998-04-14
申请号：AU4383597
申请日：1997-09-09
Applicant: BASF AG
Inventor： ARNOLD HEIKO , MARTIN FRIEDRICH-GEORG , PETERSEN HERMANN
IPC: B01J23/16 , B01J27/04 , B01J27/057 , B01J27/199 , C07B61/00 , C07C51/235 , C07C51/25 , C07C57/055
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