Road markings with improved cold
impact and wear resistance that are
durable under wide range of conditions
have been patented in Europe
by 3M Innovative Properties.
The coatings are obtained from
easily-handled quick-drying compositions
that include c polyfunctional
ethylenically unsaturated polymer
(polyurethane, polyurea or
polyurethane urea), preferably containing
polycarbonate and/or polyester
segments and a segment derived
from polyol or secondary polyamide
chain extender. They also contain
(meth)acryloyl functional monomer.
An application process and marked
surfaces are claimed in this patent.