Radiation curable composition with high temperature oil resistance

Abstract

The present invention relates to a radiation curable composition with high temperature oil resistance comprising (1) a(meth)acrylated urethane component comprising (a) the reaction product of hydroxyethyl(meth)acrylate and a monomeric or polymeric aromatic isocyanate, (b) hydroxyethyl(meth)acrylate, and optionally (c) a(meth)acylated prepolymer of a monomeric of polymeric aromatic isocyanate and at least one polycaprolactone polyol with a functionality.gtoreq.2 and a molecular weight in the range of about 500 to about 3,000 or (d) a(meth)acrylated prepolymer of a monomeric or polymeric aromatic isocyanate and at least one polyether polyol with a functionality.gtoreq.2 and a molecular weight in the range of about 90 to about 7,000, or a mixture of (c) and (d); (2) an aromatic multifunctional epoxy (meth)acrylate having a molecular weight of less than about 1000; (3) at least one free radical polymerizable monomer; and (4) a free radical photoinitiator, which composition exhibits at 25.degree. C. (i) a Tg greater than about 45.degree. C., (ii) an elongation of greater than about 3%, (iii) a tensile strength of greater than about 1300 psi and (iv) a shear storage modulus of greater than about 4300 psi.

Dependencies are inferred from the claim text.