Process for making an oriented polyester article having improved hydrolytic stability

摘要

Process for making an oriented polyester article with improved hydrolytic stability involves blending a polyester resin with (a) polyalkylene glycol which may be alkoxy end capped and (b) optionally a further compound of glycidyl ether carbodiimide, keteneimines, aziridines or isocyanate, heating to form a melt and forming the melt into an oriented article.