METHOD FOR PRODUCING DIARYL CARBONATES

• Main Authors: DUEX ANDRE, RONGE GEORG, LEIBERICH RICARDA, KOEHLER KARL HEINZ, RISSE FRIEDHELM, SCHELLEN RALPH, VANDEN EYNDE JOHAN, BUCHALY CARSTEN, KRAEMER KORBINIAN, OOMS PIETER
• Format: Patent
• Language: English; Korean
• Published: 21.03.2014
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; ORGANIC CHEMISTRY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention relates to a method for producing a diaryl carbonate by reacting phosgene with molten monohydroxy aromatics in the presence of at least one catalyst and without adding an additional solvent. The invention is characterised in that the catalyst or catalysts from the recovery of the diaryl carbonate are fed back into the process.