ULTRA-HIGH PURITY POLYCARBONATES HAVING GOOD INHERENT COLOR AND THERMAL RESISTANCE AND A DEVICE AND A METHOD FOR PRODUCING THE SAME

The invention relates to polycarbonates with extremely low residual levels of volatile constituents and thermal degradation products, and also improved optical properties, especially Yellowness Index (YI) and good thermal stability, from solvent-containing polymer melts. The invention further relate...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	KIRCHHOFF JOERG, KOHLGRUEBER KLEMENS, VANDER EYNDE JOHAN, RECHNER JOHANN, RUYTINX BERT, KOENIG THOMAS, BIERDEL MICHAEL, VAESJOHAN, BRUYNSEELS FRANK
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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