ZUSATZSTOFFHALTIGES FORMHARZ UND VERFAHREN ZU IHRER HERSTELLUNG

摘要

An additive-containing molded polyester resin in which the additive hardly oozes out or volatilizes off and can retain its performance for long and the polyester resin is inhibited from suffering a decrease in molecular weight and hence from impairing properties of the composition; and a process for producing the additive-containing molded resin. The process comprises using an extruder (1) or the like to heat and melt a polyester resin (5) and mold the melt into a given shape, during which an additive (6) having two or more functional groups of at least one kind selected among hydroxyl, carboxyl, and amino groups and ester bonds is added to react the additive (6) with polymer molecules of the molten polyester resin (5). Thus, an additive-containing molded resin (50) is obtained in which the additive (6) has been bonded to polymer molecules through ester or amide bonds.