| 摘要 |
PROBLEM TO BE SOLVED: To provide a pellet that is suitable for the production of gas-permeable porous moldings, and to provide a production method for said pellet.SOLUTION: The porous moldings pellet is composed of a mixture comprising polybutylene terephthalate resin, pentaerythritol, and polyhydric alcohol, and is produced by melt blending and extruding said mixture at 200 to 235°C, and pelletizing the same; the mixing ratio preferably is polybutylene terephthalate resin by 15 to 40 pts.wt., pentaerythritol by 60 to 85 pts.wt., and polyhydric alcohol by 0.25 to 3 pts.wt.; the porous moldings can be obtained by injection molding the pellet according to the present invention and thereafter eluting the pore-forming component to make it porous. |
