A method for incorporating a UV light absorbing compound into a polyester
prepared using direct esterification of reactants selected from a
dicarboxylic acid and a diol. The method comprises reacting the reactants
in an esterifying reactor under conditions sufficient to form an
esterified product including at least one of an ester, an oligomer, or
mixture having an ester and a mixture of low molecular weight polyester;
polymerizing the esterified product in a polycondensation reactor to form
a polyester; and adding the UV absorbing compound to the esterified
products when at least 50% of the carboxy groups initially present in the
reactants have been esterified to obtain a yield of UV absorbing compound
incorporated into the polyester of greater than 25%. Articles utilizing
the UV protected polyester prepared by the method of the invention are
additionally disclosed.