Patent ID: 7732506
Filing Date: 2010-06-08
Classification: C09D

Abstract:
1. A radiation-curable composition comprising: (a) at least one ortho-phthalate (meth)acrylate oligomer which is the reaction product of an ortho-phthalate modified polyester polyol with (meth)acrylic acid or a derivative thereof, wherein the ortho-phthalate modified polyester polyol is selected from the group consisting of (i) an ortho-phthalate polyester-ether polyol, and (ii) the reaction product of an ortho-phthalic acid-based material with diethylene glycol, a higher functional polyol having an average functionality of greater than two, and a long chain alkyl acid, ester or oil, wherein the reaction product has an average functionality of two; (b) optionally, at least one photoinitiator; and (c) optionally, at least one reactive diluent, wherein the composition maintains physical integrity when cured and then aged for 7 days under the conditions of 70% relative humidity, 77° C. black panel temperature, 55° C. chamber air temperature and a light intensity of 0.51 W/m 2 /nm at 340 nanometer wavelength passed through a daylight filter.