DEVICE AND METHOD FOR DEGASSING SOLVENT-CONTAINING POLYCARBONATE SOLUTIONS

Device and method for degassing solvent-containing polvcarbonate solutionsAbstractThe invention relates to an apparatus and a process for devolatilizing solvent-containingpolycarbonate solutions. By employing the inventive apparatus, polycarbonates with low residual values of volatile constituents a...

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Bibliographic Details
Main Authors KOENIG, THOMAS, VANDEN EYNDE, JOHAN, VAES, JOHAN, DE VOS, STEFAAN, KOHLGRUEBER, KLEMENS
Format Patent
LanguageEnglish
Published 29.12.2011
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
PERFORMING OPERATIONS
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Summary:Device and method for degassing solvent-containing polvcarbonate solutionsAbstractThe invention relates to an apparatus and a process for devolatilizing solvent-containingpolycarbonate solutions. By employing the inventive apparatus, polycarbonates with low residual values of volatile constituents are produced from solvent-containing polymer melts, which improved optical properties, especially yellowness index, with the aid of an apparatus combination of a flash devolatilizer and a vented extruder.Figure 3
Bibliography:Application Number: SG20110080348