AROMATIC POLYESTER RESIN COMPOSITION EXCELLENT IN RESISTANCE TO DIELECTRIC BREAKDOWN

摘要

PURPOSE: To obtain an arom. polyester resin compsn. excellent in resistances to dielectric breakdown and tracking by compounding an arom. polyester with a specific terpolymer and specific fillers each in a specified amt. ;CONSTITUTION: A polyester (e.g., polybutylene terephthalate) in an amount of 100 ptw.wt, is compounded with 3-80 pts.wt terpolymer obtd. from a monomer component comprising ethylene modified with a compd. represented by the formula (wherein R or a 1-6C alkyl; Ar is a 6-20C arom. hydrocarbon group having at least one hycidyloxy group; and (n) is 1-4), an α-olefin (e.g. propylene), and a nonconjugate dince (e.g. dicyclopentadine), 1-50 pts.wt. inorg. fibrous filler (e.g. glass fibers), and 1-5 pts.wt. inong. flaky filler (e.g. glass flakes), the sum of the filler being 60 pts.wt. or lower.;COPYRIGHT: (C)1996,JPO