Method for producing a holographic film

US8771903B2 · kind B2 · utility

Assignee

• Bayer MaterialScience AG · DE

Inventors

• Dennis Hönel · Wichterich, DE
• Marc-Stephan Weiser · Leverkusen, DE
• Friedrich-Karl Bruder · Krefeld, DE
• Thomas Rölle · Leverkusen, DE
• Thomas Fäcke · Leverkusen, DE

Key dates

• Filing date: Nov 2, 2010
• Grant date: Jul 8, 2014
• Expiry date: Apr 18, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G03H2260/54
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a method for producing holographic films, in which a photopolymer formulation is provided which comprises as constituents matrix polymers, writing monomers, a photoinitiatior system, optionally a non-photopolymerizable component and optionally catalysts, radical stabilizers, solvents, additives and other auxiliaries and/or additives. The photopolymer formulation is applied in a planar manner and in the form of a film on a support film and the photopolymer formulation is dried on the support film at a temperature 60<T<120 DEG C, wherein only compounds are selected as components for the photopolymer formulation, the TGA 95 values of which are >100 DEG C and are above the temperature T by at least 30 DEG C, and a photopolymer formulation having a plateau module of =0.030 MPa is used.