| 摘要 |
PURPOSE:To improve the compatibility of a polyester resin with a polystyrene resin by compounding the two resins with a specific thermoplastic polymer having a high affinity with them. CONSTITUTION:100 pts.wt. resin component comprising 95-5wt.% polyester resin and 5-95wt.% polystyrene resin is compounded with 0.1-10 pts.wt. thermoplastic resin which is prepd. by reacting 80-20 pts.wt. polyester resin, 20-80 pts.wt. modified polystyrene resin having at least one kind of group selected from the group consisting of hydroxyl, carboxylic anhydride, epoxy, and oxazolidone groups, and an inorg. nitrate in an amt. of 0.001-5 pts.wt.(based on 100 pts.wt. the sum of the polyester resin and the modified polystyrene resin) at 220-300 deg.C for 0.5-8hr in a molten state. |
