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handle: 10261/176904 , 10261/176901
[ES] Película de material polimérico con propiedades termo-fotocrómicas para regulación del color de superficies acristaladas y materiales plásticos. La invención se refiere a una película de material polimérico con propiedades termo-fotocrómicas que comprende cápsulas de tamaño micrométrico y/o nanométrico embebidas y depositadas de forma homogéneamente dispersa en su estructura, dichas cápsulas estando formadas por una pared sólida de un polímero diferente al polímero de la película que contiene en su interior una dispersión de al menos un compuesto fotocrómico del tipo-T que es seleccionado dentro del grupo compuesto por espiropiranos, espiroxacinas, cromenos y cualquier combinación de los mismos, en un material líquido de cambio de fase de tipo ácido no volátil que interacciona con el fotocromo en función de la temperatura. Esta película, gracias a sus propiedades, tiene múltiples utilidades como material de recubrimiento de superficies a las que se desea conferir las propiedades fotocrómicas de cambio de color, como son pizarras, pantallas de dispositivos, superficies publicitarias, vehículos y superficies de cristal o de plástico en general.
[EN] The invention relates to a film made of a polymeric material having thermo-photochromic properties, comprising micrometre and/or nanometre-sized capsules that are embedded and deposited such that they are homogeneously dispersed in the structure thereof, with said capsules being formed by a solid wall made of a polymer that is different to the polymer of the film, containing a dispersion inside made of at least one T-type photochromic compound selected within the group comprising spiropyrans, spirooxazines, chromenes and any combination thereof, in a phase changing liquid material of the non-volatile acid type which interacts with the photochrom according to the temperature. As a result of its properties, this film has multiple uses as a material for coating surfaces to be provided with the colour-changing photochromic properties, such as whiteboards, device screens, advertising surfaces, vehicles and glass or plastic surfaces in general.
Fundació Institut Català de Nanociència i Nanotecnologia, Consejo Superior de Investigaciones Científicas (España), Futurechromes S.L.
B1 Patente sin examen previo
Peer reviewed
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