Patent ID: 6749976
Filing Date: 2004-06-15
Classification: B33Y,G03F

Abstract:
A photosensitive composition comprising:(a) an epoxide containing material; (b) an aliphatic polyfunctional (meth)acrylate; (c) a hydroxyl-containing material selected from the group consisting of aliphatic polycarbonate diols and polytetrahydrofuran polyether polyols; (d) at least one cationic photoinitiator; (e) at least one free-radical photoinitiator; and (f) an aromatic or cycloaliphatic acrylic material; wherein said composition, after full cure by exposure to actinic radiation and optionally heat, has: (i) a tensile modulus in the range of 1000 to 1600 N/mm2; and (ii) an average elongation at break of at least 10%.