Excellent tracking index as well as flame-resistant properties are achieved
with other desirable characteristics of LCPs in a resin composition
consisting essentially of: a) a wholly aromatic polyester which is melt
processible and which displays anisotropy in the molten state; b) a
non-conductive filler material having a diameter of less than about 3 m,
with said non-conductive filler material being present in an amount
sufficient to increase the comparative tracking index (CTI) rating of said
composition to above 220 volts and render the composition non-burning.
Optionally, an extraordinarily small amount of non-volatile fluorescent
brightener can be added to the resin composition. In combination with the
non-conductive filler, the fluorescent brightener is found to surprisingly
and significantly improves the flame-retardant property of the resin. Such
compositions are advantageously employed in electrical and electronic
apparatuses.
