Abstract: 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 Kn+, 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.

Abstract: 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 Kn+, 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.

Abstract: The invention relates to a process for preparing triaryl organoborates proceeding from organoboronic esters in the presence of an n-valent cation 1/n Kn+, 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.

Abstract: The invention relates to a scaled holographic medium comprising a layer construction B?-C1?-C2?, 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.

Abstract: 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.

Abstract: 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.

Abstract: The invention relates to a process for preparing triaryl organoborates proceeding from organoboronic esters in the presence of an n-valent cation 1/n Kn+, 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.

Abstract: 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.

Abstract: Provided herein is a process for preparing triaryl organoborates of the formula 1/n Kn+R34B?—R1 (IV), where one equivalent of organoboronic ester of the formula B—R1(OR2)(OR3) (I) is initially charged together with 1/n equivalents of salt Kn+ nX? (II) and 3 equivalents of metal M in a solvent or a solvent mixture S1, 3 equivalents of a haloaromatic R4—Y (III) are added, an auxiliary L and optionally a second organic solvent or solvent mixture S2 is added and the compound 1/n Kn+ R34B?—R1 (IV) is separated off with the organic phase, and to the use of these substances as co-initiator in photopolymer formulations.

Abstract: To simplify the production of a security element 300 with a first security feature 310 and a second security feature 320, the following method is proposed: (a) Provision of a light-sensitive film 200, which comprises at least one carrier layer 210 and in surface-to-surface contact with this a light-sensitive function layer 220; (b) Exposure of the light-sensitive film 200 at least area by area, with the formation of a pattern in the light-sensitive function layer 220, wherein the security element (300) is formed with a first security feature (310); (b?) Optional fixing of the exposed light-sensitive film; and (c) Printing of the carrier layer 210 and, as appropriate, of the protective layer 230, wherein a second security feature 320 is produced.

Abstract: 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 Kn+ to obtain organoborates of the formula 1/n Kn+R34B?—R1 (IV), where one equivalent of organoboronic ester of the formula B—R1(OR2)(OR3) (I) is initially charged together with 1/n equivalents of salt Kn+ nX? (II) and 3 equivalents of metal M in a solvent or a solvent mixture, 3 equivalents of a haloaromatic R4—Y (III) are added, and optionally a second organic solvent water is added and the compound 1/n Kn+ R24B?—R1 (IV) is separated off with the organic phase, and to the use of these substances as co-initiator in photopolymer formulations.

Abstract: The invention relates to a sealed holographic medium comprising a layer construction containing a photopolymer layer and a sealing layer, to a process for producing the sealed holographic medium, to a kit of parts, to a layer construction for sealing and to the use thereof.

Abstract: The invention relates to a scaled holographic medium comprising a layer construction B?-C1?-C2?, 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.

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

Abstract: 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.

Abstract: The invention relates to an indirect lighting arrangement (2, 2.1, 2.2, 2.3, 2.4, 2.5) comprising at least one cylindrical waveguide (4). At least one end (12.1, 12.2) of the cylindrical waveguide (4) is designed to couple light from a first light source (1) into the cylindrical waveguide (4), and the lateral surface (10) of the cylindrical wave guide (4) has a coupling section (6) which is designed to optically couple the cylindrical waveguide (4) to an arrangeable plate-shaped waveguide (16). At least the coupling section (6) has at least one holographic optical element (8) which is designed to emit light from the cylindrical waveguide (4) into the arrangeable plate-shaped waveguide (16).

Abstract: The invention relates to a process for preparing triaryl organoborates proceeding from alkyl or cycloalkyl boronates in the presence of an n-valent cation 1/n Kn+ and to the use of these substances as co-initiator in photopolymer formulations.

Abstract: 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.

Abstract: 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.

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.