Kontinuierliches Verfahren zur Herstellung von Schmelzpolycarbonat

Details

Veröffentlichungs-Nr.

EP2692766

Aktenzeichen

EP12382308

Anmeldetag

30. Juli 2012

Veröffentlichung

16. März 2016

Erteilung

16. März 2016

Rechtsraum

EP

IPC

C08G64/30

Abstract

A method for producing polycarbonate by melt polymerization can comprise: (a) adding acetone, diaryl carbonate, and dihydroxy compound to the melt polymerization unit, wherein the acetone is added to the melt polymerization unit as a mixture with the diaryl carbonate and/or the dihydroxy compound; (b) adding a catalyst to the melt polymerization unit, optionally without separating out acetone prior to the addition of the catalyst; and (c) operating the melt polymerization unit under conditions so that the dihydroxy compound reacts with the diaryl carbonate to produce polycarbonate with a desired specification, and a phenol byproduct.

Anmelder

Firmen

SABIC Global Technologies B.V.
SABIC Innovative Plastics IP B.V.

Land

🇳🇱 Niederlande

Fachgebiete