Coating Compositions
AssigneeSun Chemical Corporation
InventorsShaun L. Herlihy, Stephen S. Standing, Robert S. Davidson
Life of this patent
Estimating the term…
Abstract
In a cationically curable composition comprising an epoxide, a cationic photoinitiator and a cyclic carbonate, we have found that the use of higher levels of cyclic carbonate than have been used hitherto can lead to much enhanced cure speed and post-cure.
Claims32
An energy-curable coating composition comprising an epoxide monomer or oligomer, a cationic photoinitiator and a cyclic carbonate, the cyclic carbonate being present in an amount of at least 12% by weight of the entire composition, provided that the composition does not comprise 57.1% 3,4-epoxy-cyclohexylmethyl-3′,4′-epoxycyclohexane carboxylate, 10.0% 3-ethyl-3-hydroxymethyl-oxetane, 15.0% pigment, 17.4% 10-biphenyl-4-yl-2-isopropyl-9-oxo-9H-thioxanthen-10-ium hexafluorophosphate as a 23% solution in propylene carbonate, and 0.5% levelling additive.
An energy-curable coating composition comprising an epoxide monomer or oligomer, a cationic photoinitiator and a cyclic carbonate other than propylene carbonate.
An energy-curable coating composition comprising an epoxide monomer or oligomer, a cationic photoinitiator and a cyclic carbonate, the cyclic carbonate being present in an amount of from 15% to 35% by weight of the entire composition.
Dependencies are inferred from the claim text.