Covestro Deutschland Ag

Bayer Materialscience Ag

Bundesdruckerei Gmbh

Aicuris Gmbh + Co. Kg.

Thomas Roelle

Friedrich-Karl Bruder

Thomas Fäcke

Dennis Hönel

Marc-Stephan Weiser

Horst Berneth

Wieland Hovestadt

Christian Diedrich

Dieter Lang

Rudolf Schohe-Loop

Jörg Hofmann

Klaus Lorenz

Serguei Kostromine

Kai Thede

Sebastian Dörr

Rainer Hagen

Kerstin Henninger

Holger Zimmermann

Marcus Bauser

Chantal Fuerstner

Günther Walze

Werner Hoheisel

Olga Kulikovska

Daniela Paulsen

Michael Knebel

Andre Leopold

Johannes Koebberling

David Brueckner

Richard Meisenheimer

Nicolas Stoeckel

Karl Vetterle

Enrico Orselli

Christel Manecke

Lena Nault

Michael Stasiak

Dennis Hoenel

Therese Klobutowski

Dennis HÖNEL

François Deuber

Photopolymer compositions include a) matrix polymers, b) writing monomers, c) at least one photoinitiator system, d) optionally at least one non-photopolymerisable component, e) optionally catalysts, radical stabilisers, solvents, additives and other auxiliary and/or additional materials. The at least one photoinitiator system c) consists of at least one colouring agent and at least one coinitiator. At least one of the colouring agents has a structure according to formula (II), and the at least one coinitiator has a calculated oxidation potential (E); determined according to the formula (1).

Photopolymer compositions for thermostable photopolymers in the visible spectral range

The invention relates to a protective layer comprising a photopolymer layer B and an at least partly cured protective layer C, to a process for producing the layer construction according to the invention, to a kit of parts, to the use of an at least partly cured protective layer C for protection of a photopolymer layer B and to optical displays and security documents comprising the layer construction according to the invention.

Protective layer for photopolymer

A method for integrating a hologram into the body of a security document that has a laminated body. The method includes: providing a holographic film having a backing substrate layer and a photo layer; providing additional substrate layers; carrying out a laminating process in order to form the laminated body, the holographic film together with the additional substrate layers being collated to form a substrate layer stack and being combined, together with the additional substrate layers, in a high-pressure, high-temperature laminating method to form the laminated body. There is also described a corresponding security document body.

Method for integrating a hologram into a security document body and security document body

The invention relates to a method for selecting compounds which can be used as additives in photopolymer formulations for producing light holographic media, and to photopolymer formulations which contain at least one softener which are selected according to the claimed method. The invention also relates to the use of photopolymer formulations for producing holographic media.

Selection method for additives in photopolymers

The invention relates to an illumination device for illuminating at least one light modulator system of a liquid crystal display, the device comprising at least one waveguide substrate for guiding at least one targeted light beam that can be coupled into the waveguide substrate. The waveguide substrate is at least in optical contact with at least one holographic optical decoupling substrate comprising a plurality of decoupling regions and a decoupling region is at least designed to decouple part of the targeted light beam in the form of a plurality of sub-beams in the direction of the light modulator system. At least one diffuser module is provided, said diffuser module being designed in such a way that at least the outermost sub-beams of two neighboring decoupling regions are at least adjacent to one another before exiting the diffuser module.

Illumination device for a liquid crystal display

The invention relates to a photopolymer formulation comprising a polyol component, a polyisocyanate component, a writing monomer, and a photoinitiator, containing a coinitiator and a dye having the formula F An, where F stands for a cationic dye and An&#x2033; stands for an anion, wherein the dye having the formula F An comprises a water absorption of =5%. The invention further relates to a holographic medium, in particular in the form of a film, containing a photopolymer formulation according to the invention, to the use of such a medium for recording holograms, and to a special dye that can be used in the photopolymer formulation according to the invention.

Photopolymer formulations for producing holographic media having highly crosslinked matrix polymers

The invention relates to photopolymer formulations based on a polymeric network as a matrix and at least one photopolymerizable monomer dissolved therein and to a method for the production of holographic media from such photopolymers and to the use thereof.

Photopolymer formulations having a low crosslinking density

The subject matter of the invention is a method for producing illuminated, holographic media comprising a photopolymer formulation having the adjustable mechanical modulus GUV. A further subject matter of the invention is an illuminated, holographic medium that can be obtained by means of the method according to the invention.

[object Object]

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.

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

Urethane acrylates of the general Formula (I), corresponding salts, solvates or solvates of a salt thereof: wherein R, R, R, Rand Reach independently represent a substituent selected from the group consisting of hydrogen, halogens, C-alkyls, trifluoromethyl, C-alkylthios, C-alkylselenos, C-alkyltelluros, and nitro groups, with the proviso that at least one of R, R, R, Rand Ris not hydrogen; Rand Reach independently represent a substituent selected from the group consisting of hydrogen and C-alkyls; and A represents a saturated or unsaturated or linear or branched C-alkyl radical or a polyalkylene oxide radical having 2-6 ethylene oxide or propylene oxide units; processes for producing and methods of using the same.

Phenyl isocyanate-based urethane acrylates, processes for producing and methods of using the same

The invention relates to substituted quinolones and to processes for their preparation as well as to their use for the production of medicaments for the treatment and/or prophylaxis of diseases, especially for use as antiviral agents, particularly against cytomegaloviruses.

Substituted quinolones

Growing community of inventors

Leverkusen, Germany

Thomas Roelle