Abstract: The present disclosure provides photocurable compositions suitable for three-dimensional printing comprising at least one highly crosslinkable acrylate monomer, at least one elastic urethane acrylate oligomer, and a photoinitiator package comprising bis(.cta.5-2,4-cyclopentadien-1-yl)-bis(2,6-difluoro-3-(1H-pyrrol-1-yl)-phenyl) titanium (Irgacure 784), Genomer 7302, and bis-acylphosphine oxide (BAPO).

Abstract: Described herein is a composition including one or more ethylenically unsaturated monomers and (a) one or more oligomers represented by Formula (I): wherein: A is derived from one or more poly hydroxyl group compounds having a number average molecular weight (Mn) from about 250 to about 3000 g/mol; D, X, and Y are independently urethane or carbamate linkages derived from one or more polyisocyanates; Q and Z are independently derived from one or more compounds having at least one ethylenically unsaturated group; n is an integer from 1 to 20; and m is an integer from 0 to 20; or (b) one or more commercial urethane acrylates; or (c) a combination of (a) and (b); wherein the composition is a 3D UV curable composition.