METHOD FOR THE MANUFACTURE OF POLYCARBONATE

The present invention relates to a method for the manufacture of a (co)polycarbonate comprising reacting tetrabromo bisphenol A and optionally one or more bisphenol comonomer(s) with phosgene wherein the tetrabromo bisphenol A contains an amount of tetrabromo bisphenol A dimer of at most 3.0 wt.% ba...

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Bibliographische Detailangaben
Hauptverfasser:	Schmidt, Chelsea, Kanjirathadathil, Thomas Paul, Konda, Shivakumar, Calveras, Jordi, Polasa, Indira Jyothi
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention relates to a method for the manufacture of a (co)polycarbonate comprising reacting tetrabromo bisphenol A and optionally one or more bisphenol comonomer(s) with phosgene wherein the tetrabromo bisphenol A contains an amount of tetrabromo bisphenol A dimer of at most 3.0 wt.% based on the weight of the tetrabromo bisphenol A, determined after heat treating the tetrabromo bisphenol A at a temperature of 260° C. for a period of 15 minutes.