DEGUSSA PATENTS RADIATION
CURABLE POWDER COATING
Patent No. U.S. 6,861,465 B
Degussa has received a patent for a
radiation curable powder coating composition.
It is comprised of a binder of at
least one amorphous urethane acrylate
having a glass transition temperature of
at least 35°C and a melting point of 50
to 120°C; and an auxiliary. The amorphous
urethane acrylate is obtained by
reacting at least one amorphous hydroxyl-
containing polyester having a glass
transition temperature of 35-80°C; at
least one polyisocyanate; and at least
one compound containing at least one
alcohol group and at least one polymerizable
acrylate group.