Liquid crystalline polyester compositions containing carbon black

Disclosed are liquid crystalline polyester molding compositions which are capable of being molded into an article having a thickness of less than 1.5 mm and a flammability classification of 94V-O as determined by the UL-94 20 mm Vertical Burning Test (ASTM D 3801) which are comprised of (i) certain...

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Bibliographische Detailangaben
Hauptverfasser:	STACK, GARY MICHAEL, WALKER, JR., THEODORE ROOSEVELT
Format:	Patent
Sprache:	eng
Schlagworte:	CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PRINTED CIRCUITS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	Disclosed are liquid crystalline polyester molding compositions which are capable of being molded into an article having a thickness of less than 1.5 mm and a flammability classification of 94V-O as determined by the UL-94 20 mm Vertical Burning Test (ASTM D 3801) which are comprised of (i) certain all-aromatic, liquid crystal polyester consisting essentially of terephthalic acid residues, 2,6-naphthalenedicarboxylic acid residues, hydroquinone residues, and p-hydroxybenzoic acid residues; and (ii) about 0.1 to 10 weight percent, based on the total weight of the liquid crystalline polyester molding composition, carbon black. These liquid crystalline polyester molding compositions also may contain glass fiber. The disclosed molding compositions are particularly useful for manufacturing circuit boards and electrical connectors for use in various electronic devices.