4,5-Epoxycyclohexane-1,2-dicarboxylic acid diglycidyl
ether cyclic
carbonate (EDDC) was synthesized by chemical addition of carbon dioxide
with 4,5-epoxycyclohexane-1,2-dicarboxylic acid diglycidylester (EDD)
and then cross-linked with isophorondiamine (IPDA) and amino-modified
poly(dimethylsiloxane) (AMPDMS) to prepare a unique fluorine-free
antismudge nonisocyanate polyurethane coating (NIPU). Notably, the
specific surface energy of NIPU was affected dramatically by the AMPDMS
component. When its content was 1.0 wt %, the NIPU demonstrated more
than 98% optical transmittance with a surface roughness of about 0.401
nm. Moreover, the NIPU coatings exhibited remarkable repellency toward
different liquids, such as pump oil, corn oil, water, milk, cola,
orange juice, fingerprint solution, and so on, where the CaCO3 powders could slide down with water, and no liquid droplets
or CaCO3 powder remained on the coating surface. When applied
to different substrate surfaces including glass, tinplate, and ceramics,
the NIPU coatings still demonstrated strong antigraffiti performance.
Therefore, the NIPU possessed excellent easy-to-clean, antismudge
property and wear resistance, showing great application prospects.