ERHÖHEN DES MOLEKULARGEWICHTES VON POLYESTER UND FÜR DIESES VERFAHREN GEEIGNETE VORMISCHUNG

摘要

An increase in the molecular weight of polyester and recycled polyester can be achieved by blending said polyester with a difunctional epoxy resin and a sterically hindered hydroxyphenylalkylphosphonic acid ester or half-ester and heating the blend to above the melting point (glass transition temperature) of the polyester.