| 摘要 |
PROBLEM TO BE SOLVED: To obtain an antistatic PBT-based resin composition capable of exhibiting antistatic effect permanently, having little deposition of colored degenerated resin near the outlet of an extruder during molding and useful as an electronic material or the like by formulating a PBT-based resin, a specific polyether ester and the like at specific ratios. SOLUTION: This resin is formulated with (A) 100 pts.wt. of a PBT-based resin, (B) 5-30 pts.wt. of a polyether ester obtained by the polycondensation of (i) a 6-20C dicarboxylic acid and/or its ester, (ii) a poly(alkylene oxide)glycol having a number average molecular weight of 200-50,000 and (iii) a 2-10C glycol, and (C) 0.5-6 pts.wt. of a surfactant. A compound of the formula (Ar is a 6-12C trivalent aromatic group; R1 and R2 are each H or the like; M+ is a metal ion or the like) in an amount of 3-50 mol.% is formulated in the component (i). The compounding ratio of the component (ii) in the component B is 40-90 wt.%. The reduced viscosity (conc. of 1.2 g/dl) of the component B determined in a mixed solvent of phenol/tetrachloroethane (60/40 by weight) at 35 deg.C is 1.0-5.0.
|
