Patent ID: 6121369
Filing Date: 2000-09-19
Classification: C08G,C08K,H05K

Abstract:
A liquid crystalline polyester molding composition comprising:(i) a liquid crystal polyester consisting essentially of about 1.5 to 25 mole percent terephthalic acid (T) residues, about 6.5 to 37 mole percent 2,6-naphthalenedicarboxylic acid (N) resides, about 16 to 42 mole percent hydroquinone (HQ) residues, and about 17 to 67 mole percent p-hydroxybenzoic acid (PHB) residues; wherein the total mole percent of T, N, HQ and PHB residues is equal to 100; and(ii) about 0.1 to 5 weight percent, based on the total weight of the liquid crystalline polyester molding composition, carbon black;provided that articles having a thickness of less than 1.5 mm molded from the molding composition which also contains at least 20 weight percent glass fiber exhibit a flammability classification of 94V -O as determined by the UL-94 20 mm Vertical Burning Test (ASTM D 3801).