Special polyether-based polyurethane formulations for the production of holographic media

US8361678B2 · kind B2 · utility

Assignee

• Bayer MaterialScience AG · DE

Inventors

• Marc-Stephan Weiser · Leverkusen, DE
• Thomas Roelle · Leverkusen, DE
• Friedrich-Karl Bruder · Krefeld, DE
• Thomas Fäcke · Leverkusen, DE
• Dennis Hönel · Wichterich, DE
• Klaus Lorenz · Worms, DE
• Jörg Hofmann · Krefeld, DE

Key dates

• Filing date: Sep 29, 2009
• Grant date: Jan 29, 2013
• Expiry date: Dec 2, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G11B7/245
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to novel polyurethane compositions which are advantageous for the production of holographic media, inter alia for data storage, but also for optical applications of different types.