POLYESTER SYNTHESIS

摘要

The present disclosure provides methods for modifying polymeric resin
materials after
polymerization to make fine adjustments in the chemical or physical properties
of the resin, or in
modifying the structure of the polymer chains. The resulting resins may be
useful in forming
toner particles. In embodiments, a polymeric resin may have epoxy groups added
to its
backbone to increase its melting point. The resulting polymer, sometimes
referred to herein as
an epoxidized polymer, may, in turn, be reacted with wax-like components, to
increase the
compatibility of the polyester with waxes utilized in forming toner particles.
In other
embodiments, the resulting epoxidized polymer may be reacted with components
possessing
carboxylic acid groups to adjust the acid value and weight average molecular
weight of the resin.