A photocurable composition comprising cationically curable compound, an acrylate-containing compound; a hydroxyl-containing compound; a cationic photoinitiator; and a free radical photoinitiator; wherein said composition has less than 0.54 equivalents of cationically curable groups, less than 0.10 equivalents...http://www.google.de/patents/US7718111?utm_source=gb-gplus-sharePatent US7718111 - Photocurable compositions for articles having stable tensile properties