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    102.
    发明专利
    未知

    公开(公告)号：DE50111897D1

    公开(公告)日：2007-03-08

    申请号：DE50111897

    申请日：2001-02-16

    Applicant: BASF AG

    Inventor： HERZOG REINHARD ,  NESTLER GERHARD ,  SCHROEDER JUERGEN

    IPC: C07C67/08 ,  C07B61/00 ,  C07C67/327 ,  C07C69/54 ,  C07C69/593

    Abstract: An ester of an alpha,beta-unsaturated carboxylic acid is prepared by reacting the carboxylic acid with a C6-C12-alkanol, cyclopentanol or cyclohexanol in the presence of an acidic esterification catalyst and of an entraining agent for removing the water of reaction formed in the esterification, by a process in which the entraining agent used is the olefin on which the alkanol is based.

    103.
    发明专利
    未知

    公开(公告)号：DE50304605D1

    公开(公告)日：2006-09-21

    申请号：DE50304605

    申请日：2003-10-06

    Applicant: BASF AG

    Inventor： THIEL JOACHIM ,  HAMMON ULRICH ,  BAUMANN DIETER ,  HEILEK JOERG ,  SCHROEDER JUERGEN ,  MUELLER-ENGEL KLAUS JOACHIM

    IPC: C07C51/44 ,  C07C57/04

    Abstract: In a process for preparing acrylic acid, an acrylic acid-containing product gas mixture obtained by catalytic gas phase partial oxidation of a C 3 precursor of acrylic acid, after direct cooling with a quench liquid, is fractionally condensed in a separating column provided with internals, rising into itself with sidestream takeoff of crude acrylic acid, and the acrylic acid oligomers which form are dissociated and the resulting dissociation gas is subjected to a countercurrent rectification before it is recycled.

    105.
    发明专利
    未知

    公开(公告)号：DE50303223D1

    公开(公告)日：2006-06-08

    申请号：DE50303223

    申请日：2003-07-30

    Applicant: BASF AG

    Inventor： DIEHL VOLKER ,  JAEGER ULRICH ,  SCHROEDER JUERGEN ,  THIEL JOACHIM

    IPC: B08B3/08 ,  B08B9/02 ,  C07C57/04

    Abstract: A process for cleaning apparatus in which (meth)acrylic acid-containing organic solvents have been treated and/or generated and contain fouling and/or polymer and residues of organic solvent, in which the apparatus contents are subjected to a steam distillation in the apparatus.

    107.
    发明专利
    未知

    公开(公告)号：BRPI0409007A

    公开(公告)日：2006-03-28

    申请号：BRPI0409007

    申请日：2004-04-02

    Applicant: BASF AG

    Inventor： POPP ANDREAS ,  DANIEL THOMAS ,  SCHROEDER JUERGEN ,  JAWOREK THOMAS ,  FUNK RUEDIGER ,  SCHWALM REINHOLD ,  WEISMANTEL MATTHIAS ,  RIEGEL ULRICH

    IPC: C08G65/32 ,  A61L15/60 ,  C07C69/00 ,  C08F20/00 ,  C08G63/00 ,  C08G65/26 ,  C08G65/28 ,  C08G65/332

    Abstract: The present invention relates to novel mixtures of (meth)acrylic esters of polyalkoxylated trimethylolpropane of the formula where AO is for each AO independently at each instance EO, PO or BO where EO is O-CH2-CH2- PO is independently at each instance O-CH2-CH(CH3)- or O-CH(CH3)-CH2- BO is independently at each instance O-CH2-CH(CH2-CH3)- or O-CH(CH2-CH3)-CH2- p1+p2+p3 is 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74 or 75, R1, R2 and R3 are independently H or CH3, a simplified process for preparing these ester mixtures and the use of reaction mixtures thus obtainable.

    Thermal separation between at least one gaseous and liquid stream, of which at least one comprises (meth)acrylic monomers, in a separating column whose surface is sprayed with polymerization inhibitor
    110.
    发明专利
    Thermal separation between at least one gaseous and liquid stream, of which at least one comprises (meth)acrylic monomers, in a separating column whose surface is sprayed with polymerization inhibitor 未知

    公开(公告)号：DE10317436A1

    公开(公告)日：2004-10-28

    申请号：DE10317436

    申请日：2003-04-15

    Applicant: BASF AG

    Inventor： DIEHL VOLKER ,  JAEGER ULRICH ,  HAMMON ULRICH ,  SCHROEDER JUERGEN ,  RISSEL STEFFEN

    IPC: B01D3/32 ,  C07C51/44 ,  C07C57/07 ,  B01D3/14 ,  C07C47/22

    Abstract: Thermal separating process between at least one gaseous and at least one liquid stream, of which at least one comprises (meth)acrylic monomers, in a separating column whose separating internals are mass transfer trays, in which the liquid stream comprises polymerization-inhibitor and used for spraying the surface of the separating column. Thermal separating process between at least one gaseous stream ascending in a separating column containing a sequence of mass transfer trays and a liquid stream descending in the separating column and comprising dissolved polymerization inhibitor, at least one of the streams comprising (meth)acrylic monomers, and the inner surface of the separating column being sprayed with the liquid stream descending in the separating column and comprising dissolved polymerization inhibitor, and the separating column having internals of whose surface at least parts are in the shadow region of the sprayed descending liquid stream, where parts of the surface of the internals which are in the shadow of the sprayed descending liquid stream are removed from the shadow region by being covered. An independent claim is also included for a separating column containing a sequence of mass transfer trays and installed as support elements, covered double-T supports and/or covered U-shaped supports.

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