ABUSIVELY MOLDED ARTICLE INCLUDING UV-STABLE POLYCARBONATE

A molded article includes a polycarbonate resin, an ultraviolet (UV) absorbing component, a heat stabilizer component and an acid stabilizer component. The polycarbonate resin is produced by an interfacial polymerization process and has an end-cap level of at least about 98%, and includes a ratio of...

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Main Authors EGGENHUISEN, Tamara Marijke, VAN DE GRAMPEL, Robert Dirk, FERNANDEZ, Ignacio Vic, ASSINK, Roland Sebastian, BROEKAART, Eduardus Ludovicus Louisa, DEL AGUA HERNANDEZ, David
Format Patent
LanguageEnglish
Published 19.12.2019
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
METALLURGY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
ORGANIC MACROMOLECULAR COMPOUNDS
PHYSICS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Summary:A molded article includes a polycarbonate resin, an ultraviolet (UV) absorbing component, a heat stabilizer component and an acid stabilizer component. The polycarbonate resin is produced by an interfacial polymerization process and has an end-cap level of at least about 98%, and includes a ratio of bound UV absorbing component to free UV absorbing component of less than about 1.0 when molded under abusive molding conditions. The polycarbonate resin may include high purity polycarbonate. The acid stabilizer component may include a sulfonic acid ester. Methods of forming molded articles are also described.
Bibliography:Application Number: US201616061427