公开(公告)号：AT520734T

公开(公告)日：2011-09-15

申请号：AT07857378

申请日：2007-12-11

Applicant: BASF SE

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

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

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：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：DE102008043810A1

公开(公告)日：2009-05-28

申请号：DE102008043810

申请日：2008-11-18

Applicant: BASF SE

Inventor： BERGMANN HERMANN ,  HOEFER FRANK ,  HAREMZA SYLKE

IPC: C07C69/54 ,  C07C67/02

Abstract: A method for the production of (meth)acrylate esters of prenol and isoprenol, involves the esterification of phenol or isoprenol with (meth)acrylic acid (S) or their transesterification with a (meth)acrylate ester (D), in presence of catalyst(s) (K) selected from inorganic salts (K1), metal acetylacetonates (K2) and tert. nitrogen bases (K3).