Patent ID: 6287748
Filing Date: 2001-09-11
Classification: B33Y,G03F

Abstract:
A photosensitive composition comprising:(a) from about 20 to 37.00% by weight of an epoxide-containing material;(b) about 5-40% by weight of acrylic material selected from aromatic acrylic material, cycloaliphatic material, or combinations thereof;(c) about 5-50% by weight of a reactive hydroxyl-containing material;(d) at least one cationic photoinitiator; and(e) at least one free-radical photoinitiator;wherein said composition, after cure by exposure to actinic radiation and optionally heat, has the following properties:(i) a tensile break before yield stress or a tensile yield stress greater than 13 N/mm.sup.2 ;(ii) a tensile modulus in the range of about 180 to about 850 N/mm.sup.2 ;(iii) a tensile break elongation before yield or a tensile yield elongation greater than 6%; and(iv) a notched Izod impact strength greater than 50 J/m.