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    PROCESS FOR PREPARING ALKYL ESTERS OF (METH) ACRYLIC ACID
    11.
    发明专利
    PROCESS FOR PREPARING ALKYL ESTERS OF (METH) ACRYLIC ACID 未知

    公开(公告)号：MY157865A

    公开(公告)日：2016-07-29

    申请号：MYPI20060849

    申请日：2006-02-28

    Applicant: BASF AG

    Inventor： HABECK THORSTEN DR ,  RAUH ULRICH ,  FRIESE THORSTEN DR ,  MARTAN HANS DR

    IPC: C07C67/54

    Abstract: A PROCESS IS DESCRIBED FOR CONTINUOUSLY PREPARING ALKYL ESTERS OF (METH)ACRYLIC ACID BY REACTING (METH)ACRYLIC ACID AND ALKANOLS HAVING FROM 1 TO 5 CARBON ATOMS IN HOMOGENEOUS, LIQUID, SOLVENT-FREE PHASE AT ELEVATED TEMPERATURE AND IN THE PRESENCE OF AN ACIDIC ESTERIFICATION CATALYST, IN WHICH - THE (METH) ACRYLIC ACID, THE ALKANOL AND THE ACIDIC ESTERIFICATION CATALYST ARE FED TO A REACTION ZONE (5, 6), - A REACTION MIXTURE (21) IS DISCHARGED FROM THE REACTION ZONE (5: 6). AND IS INTRODUCED INTO A RECTIFICATION UNIT I AND SEPARATED BY ADDITION OF WATER INTO A TOP STREAM (23), COMPRISING THE ALKYL ESTER OF (METH)ACRYLIC ACID, AND A BOTTOM STREAM (22), AND - A SUBSTREAM OF THE BOTTOM STREAM (22) FROM THE RECTIFICATION UNIT I IS FED TO A RESIDUE DISSOCIATION UNIT IV, WHICH COMPRISES A DISSOCIATING BOILER (61). AND IS SEPARATED THEREIN INTO A TOP STREAM (29), WHICH IS RECYCLED INTO THE RECTIFICATION UNIT I AND A BOTTOM STREAM (40). WHICH IS REMOVED FROM THE SYSTEM, WHEREIN THE RESIDUE DISSOCIATION UNIT IV, AS WELL AS THE DISSOCIATING BOILER (61), FURTHER COMPRISES A RECTIFICATION COLUMN (62), THE WATER CONTENT OF THE LIQUID OBTAINED AT THE BOTTOMMOST STAGE THEREOF BEING LESS THAN 0.1% BY WEIGHT.

    12.
    发明专利
    未知

    公开(公告)号：DE59804554D1

    公开(公告)日：2002-08-01

    申请号：DE59804554

    申请日：1998-04-22

    Applicant: BASF AG

    Inventor： SCHLIEPHAKE DR ,  HAMMON DR ,  RAUH ULRICH ,  SCHRAUT DR

    IPC: B01J8/06 ,  B01J19/00

    Abstract: Reactor arrangement comprises at least two tubular reactors filled with solid particles, at least one reactor containing a temperature measuring device. The novelty is that the tubular reactors are arranged so that the ratio of the composition of the solid particles to the free cross-sectional surfaces of each reactor as well as the pressure loss, measured by passing an inert gas proportionally transversal to the free cross-sectional, are equal over each tubular reactor. Also claimed is a process for treating fluid compositions with the production and consumption of thermal energy using the above reactor arrangement.

    13.
    发明专利
    未知

    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.

    Preparation of alkyl esters of (meth) acrylic acid
    14.
    发明专利
    Preparation of alkyl esters of (meth) acrylic acid 未知

    公开(公告)号：SG50766A1

    公开(公告)日：1998-07-20

    申请号：SG1996010697

    申请日：1996-09-27

    Applicant: BASF AG

    Inventor： BAUR KARL GERHARD ,  ANNEN ULRICH ,  EXNER HERBERT ,  FRIED MICHAEL ,  RAUH ULRICH

    IPC: C07C67/327 ,  C07C69/54 ,  C07C67/08

    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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