A new polyester resin for #beta#-hydroxyalkylamide powder coatings

摘要

A carboxyl terminated polyester resin of novel molecular composition has been developed for use in powder coatings containing #beta#-hydroxyalkylamide (HAA) type hardeners. The design of this new polyester having sterically hindered carboxyl end groups enables the formulation of powder coatings that exhibit outstanding flow out without sacrificing other properties such as acid rain resistance or colour stability on overbake.