Herstellung von aromatischen Dihydroxyverbindungen durch Alkoholyse von flammhemmerhaltigen Polycarbonatzusammensetzungen

Details

Veröffentlichungs-Nr.

EP2746249

Aktenzeichen

EP12382521

Anmeldetag

21. Dezember 2012

Veröffentlichung

7. Juni 2017

Erteilung

7. Juni 2017

Rechtsraum

EP

IPC

C07C68/06C07C69/96C07C39/16C07C37/055C08J11/24C08G64/30C08L69/00

Abstract

The disclosure provides a method for recovering a dihydroxy aromatic compound and a dialkyl carbonate from a polycarbonate-containing composition comprising a polycarbonate and a phosphorus-containing flame retardant. The method comprises heating the composition in the presence of an alcohol and a transesterification catalyst having non-neutralizable groups at a temperature of 70°C to 200°C and a pressure of 50 mbar to 40 bar for a time sufficient to depolymerize the polycarbonate producing a dihydroxy aromatic compound and a dialkyl carbonate.

Anmelder

Firma

Saudi Basic Industries Corporation

Land

🇸🇦 Saudi-Arabien

Fachgebiete