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公开(公告)号：CZ273496A3
公开(公告)日：1998-05-13
申请号：CZ273496
申请日：1996-09-18
Applicant: BASF AG
Inventor： BAUR KARL GERHARD DR , ANNEN ULRICH DR , EXNER HERBERT DR , FRIED MICHAEL DR , RAUH ULRICH
IPC: C07C67/08 , C07C67/327 , C07C69/54
Abstract: A process for the prodn. of (1-4C alkyl) (meth)acrylate esters (AM/AE) from esters of formula (I) and opt. esters of formula (II), in which R = H or Me; R , R = 1-4C alkyl; n = 0 or more. The process comprises reaction in the liq. phase under reduced pressure in presence of acid, with continuous removal of cleavage prods. Also claimed is a process for the prodn. of (AM/AE) by the acid-catalysed esterification of 1-4C alkanols with (meth)acrylic acid, in which by-prods. (I) and (II) are sepd. from the prod. mixt. and subjected to the above cleavage process, and the cleavage prods. are continuously removed and returned to the esterification process.
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Patent Agency Ranking
公开(公告)号：ES2137607T3
公开(公告)日：1999-12-16
申请号：ES96115456
申请日：1996-09-26
Applicant: BASF AG
Inventor： BAUR KARL GERHARD DR , ANNEN ULRICH DR , EXNER HERBERT DR , FRIED MICHAEL DR , RAUH ULRICH
IPC: C07C67/08 , C07C67/327 , C07C69/54
Abstract: A process for the prodn. of (1-4C alkyl) (meth)acrylate esters (AM/AE) from esters of formula (I) and opt. esters of formula (II), in which R = H or Me; R , R = 1-4C alkyl; n = 0 or more. The process comprises reaction in the liq. phase under reduced pressure in presence of acid, with continuous removal of cleavage prods. Also claimed is a process for the prodn. of (AM/AE) by the acid-catalysed esterification of 1-4C alkanols with (meth)acrylic acid, in which by-prods. (I) and (II) are sepd. from the prod. mixt. and subjected to the above cleavage process, and the cleavage prods. are continuously removed and returned to the esterification process.
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公开(公告)号：DE19749859A1
公开(公告)日：1998-07-30
申请号：DE19749859
申请日：1997-11-11
Applicant: BASF AG
Inventor： FRIED MICHAEL DR , NESTLER GERHARD DR
Abstract: The invention relates to a device for feeding a fluid into a container comprising a delivery device which leads into the inner space (5) of the container (1), is closed with a rupture disk (18), and is connected to a delivery line for the fluid. In order to increase the operational safety and to avoid an over application of pressure on the rupture disk, the delivery device is designed as a telescopic tube (4) which can telescope into the inner space (5) of the container (1) by means of the pressure of the fluid and is mounted above the highest filling level of the container (1).
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公开(公告)号：DE19648746A1
公开(公告)日：1998-05-28
申请号：DE19648746
申请日：1996-11-25
Applicant: BASF AG
Inventor： AICHINGER HEINRICH DR , FRIED MICHAEL DR , NESTLER GERHARD DR
Abstract: Method for producing (meth)acrylic acid esters by reacting (meth)acrylic acid with a C4-C12-alkanol in the presence of sulfuric acid or sulfuric acid mono C4-C12-alkyl ester as a catalyst, wherein A) the reaction is carried out in an esterification unit comprising a first reactor and at least one other reactor, B) the first reactor is loaded with a mixture of (meth)acrylic acid, C4-C12-alkanol and a catalyst, said mixture containing no more than 5 wt.% of water in relation to the sum of the starting materials, C) esterification is carried out in the first reactor without removing ester, alkanol or water until (meth)acrylic acid reaction of at least 40 % is obtained, as long as the mixture remains single phase, and D) esterification is continued in at least one other reactor in which the water formed is removed by distillation.
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公开(公告)号：CZ9602700A3
公开(公告)日：1998-05-13
申请号：CZ270096
申请日：1996-09-16
Applicant: BASF AG
Inventor： AICHINGER HEINRICH DR , FRIED MICHAEL DR , NESTLER GERHARD DR
CPC classification number: C07C67/327 , C07C67/08 , C07C67/60 , C07C69/54
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公开(公告)号：DE3062897D1
公开(公告)日：1983-06-01
申请号：DE3062897
申请日：1980-09-23
Applicant: BASF AG
Inventor： FRIED MICHAEL DR , ZUERN LUDWIG DR , WEILBACHER MANFRED DR , WEBER REINHOLD
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