Naphthyl acrylates as writing monomers for photopolymers

US10241402B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Thomas Rölle · Leverkusen, DE
• Horst Berneth · Leverkusen, DE
• Friedrich-Karl Bruder · Krefeld, DE
• Dennis Hönel · Wichterich, DE
• Serguei Kostromine · Rheinbach, DE
• Thomas Fäcke · Leverkusen, DE

Key dates

• Filing date: Dec 9, 2015
• Grant date: Mar 26, 2019
• Expiry date: Dec 9, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G03H2260/12
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention relates to naphthyl urethane acrylates particularly useful as writing monomers in photopolymer formulations for holographic media. The invention further relates to a photopolymer formulation comprising matrix polymers, writing monomers and photoinitiators, wherein the writing monomers comprise a naphthyl urethane acrylate according to the invention, to a holographic medium comprising matrix polymers, writing monomers and photoinitiators, wherein the writing monomers comprise a naphthyl urethane acrylate according to the invention, and also to a display comprising a holographic medium according to the invention.