Patent application number | Description | Published |
20140038084 | PHOTOPOLYMER FORMULATION FOR PRODUCING HOLOGRAPHIC MEDIA - The invention relates to a photopolymer formulation, comprising at least one polyol component, a polyisocyanate component, a write monomer, a photoinitiator, and a catalyst, wherein the photopolymer formulation has an activation temperature >8300 K. The invention further relates to a method for producing a holographic medium, to a holographic medium that can be obtained according to the method according to the invention, and to the use of a holographic medium according to the invention for producing a hologram. | 02-06-2014 |
20140295328 | CHAIN TRANSFER REAGENTS IN POLYURETHANE-BASED PHOTOPOLYMER FORMULATIONS - The present invention relates to photopolymer formulations comprising: matrix polymers (A), obtainable by reacting at least one polyisocyanate component (a) and one isocyanate-reactive component (b); a writing monomer (B); a photoinitiator (C); a catalyst (D); and a chain transfer reagent (E). A holographic medium that contains a photopolymer formulation according to the invention or can be obtained by using it, the use of a photopolymer formulation according to the invention for manufacturing holographic media, and a method for producing a holographic medium by using a photopolymer formulation according to the invention are also subject matter of the invention. | 10-02-2014 |
20140295329 | HOLOGRAPHIC MEDIUM HAVING A PROTECTIVE LAYER - This invention relates to a holographic medium comprising a protective layer and a photopolymer film which is bonded to the protective layer and contains polyurethane matrix polymers, acrylate writing monomers and photoinitiators, wherein the protective layer is impermeable to the constituents of the photopolymer film, is optically clear and is transparent to electromagnetic radiation having a wavelength in the range of from 350 to 800 nm. The invention further provides the use of a holographic medium according to the invention in the production of holograms, and a process for the production of a holographic medium according to the invention. | 10-02-2014 |
20150017353 | LAYER COMPOSITE CONSISTING OF A PHOTOPOLYMER FILM AND AN ADHESIVE LAYER - The present invention relates to a layer composite comprising an exposed photopolymer film and an adhesive layer which is connected to the photopolymer film at least in certain regions, wherein the photopolymer film comprises crosslinked polyurethane matrix polymers A), crosslinked writing monomers B) and a monomeric fluoroethane additive C), wherein the adhesive layer is in the form of a diffusion barrier for the fluoroethane additive C). The invention also relates to the use of the layer composite for producing chip cards, ID documents or 3D images, as a product protective label, as a label, in banknotes in the form of a strip or window or as holographically optical elements in displays. | 01-15-2015 |
20150118601 | NOVEL PHOTOINITIATORS FOR PHOTOPOLYMERS - The present invention relates to novel photopolymer formulation comprising a polyol component, a polyisocyanate component, a writing monomer and a photoinitiator comprising a dye of formula (I). | 04-30-2015 |
20150125784 | PHOTOPOLYMER FORMULATIONS HAVING THE ADJUSTABLE MECHANICAL MODULUS GUV - 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. | 05-07-2015 |
20150192725 | LIGHT GUIDE COMPRISING DECOUPLING ELEMENTS - The invention relates to a planar light distribution module for a display, comprising a light guide plate through which light coupled in via at least one side face can propagate by means of total reflection, and at least one planar out-coupling device ( | 07-09-2015 |
20150205034 | LIGHT GUIDE PLATE COMPRISING DECOUPLING ELEMENTS - The invention relates to a planar light distribution module for a display, comprising a light guide plate through which light coupled in via at least one side face can propagate by means of total reflection, and at least one out-coupling device ( | 07-23-2015 |