公开(公告)号：DE102010001228A1

公开(公告)日：2011-02-17

申请号：DE102010001228

申请日：2010-01-26

Applicant: BASF SE

Inventor： BLUM TILL ,  ZUROWSKI PETER ,  RISSEL STEFFEN ,  HAREMZA SYLKE ,  FRIESE THORSTEN ,  JAEGER ULRICH ,  SCHLIEPHAKE VOLKER ,  MUELLER-ENGEL KLAUS JOACHIM ,  HAMMON ULRICH ,  HOEFER FRANK

IPC: C07C57/07 ,  C07C57/05

Abstract: Ein Verfahren der Abtrennung einer rohen Acrylsäure aus einem Glyoxal als Nebenprodukt enthaltenden Produktgasgemisch einer heterogen katalysierten partiellen Gasphasenoxidation wenigstens einer C-Vorläuferverbindung, das die Absorption der Acrylsäure in einem hochsiedenden Absorptionsmittel sowie die rektifikative Aufarbeitung des resultierenden Absorbats umfasst, und bei dem von aus dem Sumpfraum der Absorptionskolonne entnommener Sumpfflüssigkeit in einer Destillationseinheit darin enthaltenes Absorptionsmittel abdestilliert und in die Absorption rückgeführt wird, bevor dabei verbliebene Schwersieder ausgeschleust werden, und bei dem durch Beschränkung der Schwersiederverweilzeit in der Destillationseinheit der Glyoxalgehalt der rohen Acrylsäure vermindert wird.

公开(公告)号：BRPI0721107B1

公开(公告)日：2017-01-24

申请号：BRPI0721107

申请日：2007-12-11

Applicant: BASF SE

Inventor： HÖFER FRANK ,  LIPOWSKY GUNTER ,  MÜLLER-ENGEL KLAUS JOACHIM ,  ZUROWSKI PETER ,  RISSEL STEFFEN ,  HAREMZA SYLKE ,  JÄGER ULRICH ,  SCHLIEPHAKE VOLKER

IPC: C08K5/17 ,  C08F220/00 ,  F28D1/00

公开(公告)号：BR112012014487A2

公开(公告)日：2016-08-16

申请号：BR112012014487

申请日：2010-12-13

Applicant: BASF SE

Inventor： LIPOWSKY GUNTER ,  RISSEL STEFFEN ,  HAREMZA SYLKE ,  JÄGER ULRICH ,  SCHLIEPHAKE VOLKER

IPC: C07C57/075 ,  C07C67/62 ,  C07C69/54

Abstract: ''processo para inibir polimerização de ácido (met) acrílico e/ou ésteres (met)acrílicos''. é descrito um processo para inibir polimerização de ácido (met)acrílico e/ou ésteres (met)acrílicos introduzindo um gás oxigenoso no ácido (met)acrílico e/ou no éster do ácido (met)acrílico, em que o ácido (met)acrílico e/ou o éster do ácido (met)acrílico tem um grau de pureza de pelo menos 95% e está no estado líquido.

公开(公告)号：ZA201205143B

公开(公告)日：2013-09-25

申请号：ZA201205143

申请日：2012-07-11

Applicant: BASF SE

Inventor： LIPOWSKY GUNTER ,  RISSEL STEFFEN ,  SCHLIEPHAKE VOLKER ,  JAGER ULRICH ,  HAREMZA SYLKE

IPC: C07C20060101

Abstract: A process for inhibiting polymerization of (meth)acrylic acid and/or (meth)acrylic esters by introducing an oxygenous gas into the (meth)acrylic acid and/or the (meth)acrylic ester, in which the (meth)acrylic acid and/or the (meth)acrylic ester has a degree of purity of at least 95% and is in the liquid state.

公开(公告)号：SG181585A1

公开(公告)日：2012-07-30

申请号：SG2012042263

申请日：2010-12-13

Applicant: BASF SE

Inventor： LIPOWSKY GUNTER ,  RISSEL STEFFEN ,  SCHLIEPHAKE VOLKER ,  JAEGER ULRICH ,  HAREMZA SYLKE

Abstract: Method for inhibiting the polymerization of (meth)arcylic acid and/or (meth)acrylic acidestersAbstractA process for inhibiting polymerization of (meth)acrylic acid and/or (meth)acrylic estersby introducing an oxygenous gas into the (meth)acrylic acid and/or the (meth)acrylicester, in whith the (meth)acrylic acid and/lof the (meth)acryk ester has a degree of purity of at least 95% and is in the Ilquid state,.No suitable figure

公开(公告)号：ZA200905039B

公开(公告)日：2010-09-29

申请号：ZA200905039

申请日：2009-07-20

Applicant: BASF SE

Inventor： LIPOWSKY GUNTER ,  SCHLIEPHAKE VOLKER ,  RISSEL STEFFEN ,  JAEGER ULRICH ,  HOEFER FRANK ,  HAREMZA SYLKE ,  MUELLER-ENGEL KLAUS JOACHIM ,  ZUROWSKI PETER

IPC: C08F20060101 ,  C08K20060101 ,  F28D20060101

Abstract: Process for transferring heat to a liquid mixture comprising at least one (meth)acrylic monomer with the aid of an indirect heat exchanger comprises introducing the liquid mixture simultaneously into the primary side of the heat exchanger by a liquid heat carrier and secondary side of the heat exchanger, where: the liquid mixture comprising at least one (meth)acrylic monomer contains at least one added active compound other than (meth)acrylic monomers from tertiary amine or salts formed from a tertiary amine and Bronsted acid, and quaternary ammonium compounds. Process for transferring heat to a liquid mixture comprising at least one (meth)acrylic monomer with the aid of an indirect heat exchanger comprises introducing the liquid mixture simultaneously into the primary side of the heat exchanger by a liquid heat carrier and secondary side of the heat exchanger, where: the liquid mixture comprising at least one (meth)acrylic monomer contains at least one added active compound other than (meth)acrylic monomers from tertiary amine or salts formed from a tertiary amine and Bronsted acid, and quaternary ammonium compounds, with proviso that none of the tertiary and quaternary nitrogen atoms in the active compound bears a phenyl group, but at least partly contains an alkyl group.

公开(公告)号：DE102008040799A1

公开(公告)日：2008-12-11

申请号：DE102008040799

申请日：2008-07-28

Applicant: BASF SE

Inventor： BLUM TILL ,  ZUROWSKI PETER ,  RISSEL STEFFEN ,  HAREMZA SYLKE ,  FRIESE THORSTEN ,  JAEGER ULRICH ,  SCHLIEPHAKE VOLKER ,  MUELLER-ENGEL KLAUS JOACHIM ,  HAMMON ULRICH ,  HEILEK JOERG

IPC: C07C57/04 ,  C07C51/16 ,  C07C51/44 ,  C07C57/07

Abstract: Separating a three carbon precursor compound of the acrylic acid as main component containing acrylic acid and glyoxal as byproduct in a product mixture of a heterogeneously catalyzed partial gas phase oxidation, comprises producing a liquid phase containing at least 70 wt.% of acrylic acid and at least 200 mol.ppm of glyoxal, crystallatively separating the glyoxal from the acrylic acid and concentrating the acrylic acid in the formed crystallisate and the glyoxal in the remaining mother liquor during the crystallization.