EP 1343748 A1 20030917 - METHOD FOR PRODUCING HIGHER (METH)ACRYLIC ACID ESTERS
Title (en)
METHOD FOR PRODUCING HIGHER (METH)ACRYLIC ACID ESTERS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON HÖHEREN (METH)ACRYLSÄUREESTERN
Title (fr)
PROCEDE DE PRODUCTION D'ESTERS D'ACIDE (METH)ACRYLIQUE SUPERIEURS
Publication
Application
Priority
- DE 10063175 A 20001218
- EP 0114902 W 20011217
Abstract (en)
[origin: WO0250014A1] The invention relates to a method for producing (meth)acrylic acid esters by transesterification of the (meth)acrylic acid with a higher alkanol in the presence of an acid catalyst, at least one polymerization inhibitor and one organic solvent that forms an azeotropic mixture with water. The reaction mixture is heated to the boiling point of the mixture in a reactor that comprises a distillation unit with a column and a condenser. The content of the reactor is recirculated via an external evaporator and heated to the boiling point, and the azeotropic mixture is distilled off. The organic solvent forms a reflux and at least a part of the solvent reflux is recirculated between the reactor and the evaporator. The inventive method allows for the production of higher (meth)acrylic acid esters in a reactor with a circulation evaporator without using copper salts as the polymerization inhibitors.
IPC 1-7
IPC 8 full level
C07C 67/08 (2006.01)
CPC (source: EP US)
C07C 67/08 (2013.01 - EP US)
Citation (search report)
See references of WO 0250014A1
Designated contracting state (EPC)
BE DE FR GB
DOCDB simple family (publication)
WO 0250014 A1 20020627; DE 10063175 A1 20020620; EP 1343748 A1 20030917; US 2004024241 A1 20040205; US 6818791 B2 20041116
DOCDB simple family (application)
EP 0114902 W 20011217; DE 10063175 A 20001218; EP 01994797 A 20011217; US 45043803 A 20030618