Patent ID: 9505873
Filing Date: 2016-11-29
CPC Classification: C07C,C07F,C08G,G03F,G03H,G11B

Claim Text:
1. A photopolymer formulation comprising a three-dimensionally crosslinked organic polymer A) or the precursors thereof as a matrix, a compound B) comprising groups that react with ethylenically unsaturated compounds via polymerization under the action of actinic radiation and is present in solution or dispersion in said matrix, and C) at least one photoinitiator, wherein the network density of said three-dimensionally crosslinked organic polymer, expressed as the average molecular weight M C of the segments bridging two polymer strands, is at least 2685 g/mol, wherein the ratio Q of the molecular weight M C to the number average molecular weight M Mo of B) is greater than 3.30, wherein a cured composition prepared from the photopolymer formulation has a plateau modulus G 0 of greater than 0.05 MPa and less than 1.0 MPa, wherein the plateau modulus G 0 is determined by measuring the curing of the matrix in an oscillation rheometer as follows: plate spacing 250 μm, oscillation measuring mode at a constant angular frequency ω temperature 50° C., normal force regulation set at 0 Newton recording of the storage modulus G′ over the measuring time for at least 2 hours or until a constant value of G