Layer composite consisting of a photopolymer film and an adhesive layer

US9261778B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Marc-Stephan Weiser · Leverkusen, DE
• Sascha Tadjbach · Bensberg, DE
• Ute Flemm · Solingen, DE
• Dennis Hönel · Wichterich, DE
• Friedrich-Karl Bruder · Krefeld, DE
• Thomas Fäcke · Leverkusen, DE
• Thomas Rölle · Leverkusen, DE
• Horst Berneth · Leverkusen, DE

Key dates

• Filing date: Dec 27, 2012
• Grant date: Feb 16, 2016
• Expiry date: Dec 27, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2848
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a layer composite comprising an exposed photopolymer film and an adhesive layer which is connected to the photopolymer film at least in certain regions, wherein the photopolymer film comprises crosslinked polyurethane matrix polymers A), crosslinked writing monomers B) and a monomeric fluoroethane additive C), wherein the adhesive layer is in the form of a diffusion barrier for the fluoroethane additive C). The invention also relates to the use of the layer composite for producing chip cards, ID documents or 3D images, as a product protective label, as a label, in banknotes in the form of a strip or window or as holographically optical elements in displays.