UV curable resins with high performance developed

UV curable resins based on glycidyl carbamate chemistry were synthesised. Quelle: Horst Gerlach

A team of researchers under the direction of Prof. Dean Webster (North Dakota State University) synthesised UV curable resins based on glycidyl carbamate chemistry. Glycidyl carbamate (GC) functional resins have been used to obtain crosslinked coatings with a wide range of properties using several crosslinking techniques such as epoxy-amine, self-crosslinking, and sol-gel. The coatings were cured in air using a fusion LC6B benchtop conveyer with an F300 UV lamp. The degree of conversion of acrylic double bonds during UV curing was determined using real time FTIR and showed that the resins had fast cure rates and high extents of conversion of acrylate groups. Hardness, flexibility, crosslink density, glass transition temperature are a function of resin composition. The type of polyisocyanates and the extent of modification in GC resins influenced the degree of conversion, crosslink density, and coating performance. The complete study will appear in "Progress in Organic Coatings", vol. 73, issue 1, January 2012, pp. 19-25.