THERMOSET POLYESTER BMC FORMULA FOR DIRECT METALLIZED FORWARD LIGHTING REFLECTOR

A thermoset bulk molding compound useful for making automotive components such as headlamps, as well as other articles of manufacture are described. The composition incorporates moisture absorbing components such as molecular sieves to absorb water present in the compound before molding, thus reduci...

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Bibliographische Detailangaben
Hauptverfasser:	RIDDLE, JODY D, DANIELSON, JEFFERY SCOTT
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS HEATING LIGHTING MAKING GRANULES OR PREFORMS MECHANICAL ENGINEERING METALLURGY NON-PORTABLE LIGHTING DEVICES ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SYSTEMS THEREOF THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A thermoset bulk molding compound useful for making automotive components such as headlamps, as well as other articles of manufacture are described. The composition incorporates moisture absorbing components such as molecular sieves to absorb water present in the compound before molding, thus reducing or eliminating mold defects while retaining the physical properties needed for automotive applications. This results in an as-molded composition with a gloss measured at 60° of greater than 85 GU that can be, without the necessity of a base coat, metallized directly and have reflector quality and durability. The metallized molded components can undergo additional steps such as applying protective sealant layers, as required by the automotive application. The removal of water before molding and the direct metallization reduces the production time of the molded articles.