US 12,313,970 B2
Photopolymerizable relief precursor having adjustable surface properties
Matthias Beyer, Weinheim (DE); Armin Becker, Großniedesheim (DE); Torben Wendland, Renningen (DE); Isabel Schlegel, Rastatt (DE); Peter J Fronczkiewicz, Lake Wylie, SC (US); and Anja Wundling, Rheinau (DE)
Assigned to XSYS GERMANY GMBH, Willstatt (DE)
Appl. No. 17/784,167
Filed by XSYS GERMANY GMBH, Willstatt (DE)
PCT Filed Dec. 14, 2020, PCT No. PCT/EP2020/086029
§ 371(c)(1), (2) Date Jun. 10, 2022,
PCT Pub. No. WO2021/116496, PCT Pub. Date Jun. 17, 2021.
Claims priority of application No. 19215470 (EP), filed on Dec. 12, 2019.
Prior Publication US 2023/0031598 A1, Feb. 2, 2023
Int. Cl. G03F 7/004 (2006.01); G03F 7/029 (2006.01); G03F 7/031 (2006.01); G03F 7/095 (2006.01); G03F 7/20 (2006.01)
CPC G03F 7/0048 (2013.01) [G03F 7/029 (2013.01); G03F 7/031 (2013.01); G03F 7/095 (2013.01); G03F 7/2024 (2013.01)] 25 Claims
OG exemplary drawing
 
1. Photopolymerisable relief precursor comprising:
(A) a dimensionally stable carrier,
(B) a photopolymerisable relief-forming layer at least containing
a crosslinkable elastomeric binder,
an ethylenically unsaturated monomer,
an additive, said additive being migration-capable, and surface-active, a photoinitiator activatable with UVA light, and
a photoinitiator activatable with UVC light;
wherein said additive is present in an amount of 0.1 to 10% by weight based on the weight of the photopolymerisable relief-forming layer;
wherein the photoinitiator activatable with UVA light is selected from the group consisting of benzil ketals, acylphosphine oxides, bisacylphosphine oxides, aminophenyl ketones, phenyloxime esters and mixtures thereof; and
wherein the photoinitiator activatable with UVC light is selected from the group consisting of hydroxyphenyl ketones, benzoyl formates, arylalkyl ketones, arylbenzyl ketones and mixtures thereof;
wherein the additive is a paraffin wax with a chain length of more than 15 C atoms or wherein the additive is a polysiloxane polyester acrylate.