Covestro Deutschland Ag

Bayer Materialscience Ag

Bayer Intellectual Property Gmbh

Lg Display Co., Ltd.

Covestro Intellectual Property Gmbh & Co. Kg

Bayer Aktiengesellschaft

Bayer Pharma Aktiengesellschaft

Bayer Healthcare Aktiengesellschaft

Bayer Schering Pharma Aktiengellschaft

Bundesdruckerei Gmbh

Thomas Rölle

Friedrich-Karl Bruder

Dennis Hönel

Thomas Fäcke

Marc-Stephan Weiser

Horst Berneth

Rainer Hagen

Günther Walze

Johannes-Peter Stasch

Karl-Heinz Schlemmer

Frank Wunder

Wahed Ahmed Moradi

Michael Hahn

Stephan Bartel

Andreas Knorr

Serguei Kostromine

Eva-Maria Becker

Hyungseok Bang

Jürgen Kintrup

Rüdiger Fischer

Gerhard Hessler

Karl Ziegelbauer

Dieter Lang

Manfred Paeschke

Sebastian Dörr

Masaomi Tajimi

Jörg Hofmann

Wieland Hovestadt

Guensik Lee

Markus Albers

Joachim Petzoldt

Georgios Tziovaras

Klaus Münter

Werner Hoheisel

Kevin Bacon

Olga Kulikovska

Dirk Dijkstra

Michael Knebel

Heejin Im

Dennis Honel

Ute Flemm

Christian Diedrich

Hiromi Okigami

Haruki Hasegawa

Thomas Lehmann

Thomas Peter Facke

Kevin B Bacon

Pantea Nazaran

Roland Künzel

André Leopold

Ganugapati Satyanarayana

Nicolas Stöckel

Sumana Roychowdhury

Koichi Kawamura

Karl Vetterle

Sascha Tadjbach

Enrico Orselli

Gerhard Müller

Anup Krishnnan Appukuttan Pillai

Michael Stasiak

Benjamin Herzberg

Heinz-Guenter Auweiler

Guiseppe Chiovetta

Therese Klobutowski

Daniel Hentschel

Ravindra Mahadev Patil

Heinz-Günter Auweiler

Kathrin Klünder

Thomas Peter FÄCKE

Giuseppe Chiovetta

Dennis HÖNEL

The invention relates to a process for preparing triaryl organo borates proceeding from organoboronic esters in the presence of an n-valent cation 1/n K, comprising the anhydrous workup of the reaction mixture and the use of the triaryl organoborates obtained as co-initiator in photopolymer formulations, holographic media and holograms.

Method for producing triarylorganoborates

The invention relates to a process for preparing triaryl organoborates proceeding from organoboronic esters in the presence of an n-valent cation 1/n K, comprising the anhydrous workup of the reaction mixture and the use of the triaryl organoborates obtained as co-initiator in photopolymer formulations, holographic media and holograms.

The invention relates to a scaled holographic medium comprising a layer construction B'-C1&#x2032;-C2&#x2032;, to a process for producing the sealed holographic medium, to a kit of parts, to a layer construction comprising a protective layer and a substrate layer and to the use thereof.

System consisting of two UV-curing dry-transfer coating layers for the protection of a hologram in a photopolymer film composite

The invention relates to a layer construction comprising a curable protective layer C and a photopolymer layer B, to a method for producing such a layer construction, to a method for producing a hologram using such a layer construction, to a sealed holographic medium and to the use of such a layer construction for producing a hologram.

Film structure containing a photopolymer layer for holographic exposure and a coating layer of high resistance

The invention relates to a process for the preparation of triaryl-organo borates from boronic ester and the use of these substances in photo initiator systems, photopolymer compositions comprising such photo initiator systems, a holographic medium comprising said photopolymer composition and the respective hologram.

Process for the manufacturing of triaryl-organo borates

Provided herein is a process for preparing triaryl organoborates of the formula 1/n KRB&#x2014;R(IV), where one equivalent of organoboronic ester of the formula B&#x2014;R(OR)(OR) (I) is initially charged together with 1/n equivalents of salt KnX(II) and 3 equivalents of metal M in a solvent or a solvent mixture S1, 3 equivalents of a haloaromatic R&#x2014;Y (III) are added, an auxiliary L and optionally a second organic solvent or solvent mixture S2 is added and the compound 1/n KRB&#x2014;R(IV) is separated off with the organic phase, and to the use of these substances as co-initiator in photopolymer formulations.

Provided herein is a process for preparing triaryl organoborates proceeding from alkyl or cycloalkyl boronates in the presence of an n-valent cation 1/n Kto obtain organoborates of the formula 1/n KRB&#x2014;R(IV), where one equivalent of organoboronic ester of the formula B&#x2014;R(OR)(OR) (I) is initially charged together with 1/n equivalents of salt KnX(II) and 3 equivalents of metal M in a solvent or a solvent mixture, 3 equivalents of a haloaromatic R&#x2014;Y (III) are added, and optionally a second organic solvent water is added and the compound 1/n KRB&#x2014;R(IV) is separated off with the organic phase, and to the use of these substances as co-initiator in photopolymer formulations.

Process for the production of triaryl organoborates

The invention relates to a method for producing a holographic optical element by providing a recording stack comprising at least one recording element laminated on at least one supporting element, irradiating at least a part of the recording stack with at least one recording beam in an irradiating step, wherein during the irradiating step, the recording stack bends, providing a bending deviation threshold for the recording stack, and adjusting at least one first process parameter such that an expected maximum bending deviation of the recording stack does not exceed the bending deviation threshold, wherein the at least one first process parameter influences the bending behaviour of the recording stack during the irradiating step.

Method for producing a holographic optical element

The invention relates to an indirect lighting arrangement () comprising at least one cylindrical waveguide (). At least one end () of the cylindrical waveguide () is designed to couple light from a first light source () into the cylindrical waveguide (), and the lateral surface () of the cylindrical wave guide () has a coupling section () which is designed to optically couple the cylindrical waveguide () to an arrangeable plate-shaped waveguide (). At least the coupling section () has at least one holographic optical element () which is designed to emit light from the cylindrical waveguide () into the arrangeable plate-shaped waveguide ().

Indirect lighting arrangement, and method for producing an indirect lighting arrangement

The invention relates to novel compounds which are especially suitable for use as writing monomers in holographic media. The invention further provides a photopolymer and a holographic medium comprising the inventive compounds, and an optical display, a security document and a holographic optical element comprising an inventive holographic medium.

Moisture-stable holographic media

The present invention provides aromatic 4,6-bis-trichloromethyl-s-triazin-2-yl compounds of formula (I), a process for producing para-disubstituted benzonitriles as precursor to give compounds of formula (I) and a process for the production thereof.

Substituted triazines and a method for producing same

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.

Naphthyl acrylates as writing monomers for photopolymers

The invention relates to a method for producing a holographic optical element by providing a recording stack comprising at least one recording element laminated on at least one supporting element, irradiating at least a part of the recording stack with at least one recording beam in an irradiating step, wherein during the irradiating step, the recording stack bends, providing a bending deviation threshold for the recording stack, and adjusting at least one first process parameter such that an expected maximum bending deviation of the recording stack does not exceed the bending deviation threshold, wherein the at least one first process parameter influences the bending behavior of the recording stack during the irradiating step.

The invention relates to a photopolymer formulation comprising a component reactive toward isocyanates, a polyisocyanate component, a writing monomer and a photoinitiator containing at least one dye and a coinitiator, characterized in that the coinitiator contains at least one substance of the formula (Ia)  The invention further provides a process for preparing the specific coinitiators and the coinitiators obtainable by this process, and additionally a process for producing a holographic medium using the specific coinitiators, and a holographic medium obtainable using the inventive photopolymer formulation. The invention further relates to a laminate structure comprising an inventive holographic medium and likewise specific borates suitable as coinitiators.

Photopolymer formulation for production of holographic media comprising borates with low TG

The invention relates to a photopolymer formulation comprising specific aromatic glycol ethers as writing monomers, matrix polymers and a photoinitiator. The invention further provides an unexposed holographic medium obtainable using an inventive photopolymer formulation, and an exposed holographic medium obtainable by exposing a hologram into an inventive unexposed holographic medium. The invention likewise provides a visual display comprising an inventive exposed holographic medium, for the use of an inventive exposed holographic medium for production of chip cards, identification documents, 3D images, product protection labels, labels, banknotes or holographic optical elements, and specific aromatic glycol ethers.

Aromatic glycol ethers as writing monomers in holographic photopolymer formulations

Growing community of inventors

Leverkusen, Germany

Thomas Rölle