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Filtros solares para proteger de la radiación solar

Authors: Cohen, Levy David; Avnir, David;

Filtros solares para proteger de la radiación solar

Abstract

La invención se refiere a materiales sol-gel dopados de filtro solare, útiles para proteger los tejidos del organismo como la piel, las uñas, el cabello y otras superficies. Las matrices sol-gel son transparentes a la radiación UV más allá de 250 nm y los agentes de filtro solar dopados son filtros solares químicos o físicos capaces de absorber la radiación UV más allá de 250 nm. Cualquier molécula, fracción o partícula puede utilizarse en la presente invención. Las matrices sol-gel pueden ser partículas de cualquier forma, de un diámetro comprendido entre 0,01 y 100 micras, capas finas o revestimientos delgados, o presentarse en forma de monolito. La invención se refiere también a un procedimiento que permite preparar materiales sol-gel dopados de filtro solar, según el cual se polimeriza por condensación al menos un monómero elegido entre los alcoxidos metálicos, los alcoxidos semimetálicos, los ésteres metálicos, los ésteres semimetálicos y los monómeros de fórmula (M(R)n(P)m, en la que M es un elemento metálico o semimetálico, r es un substituyente hidrolizable, n un número enetero comprendido entre 2 y 6, P un substituyente no polimerizable o una fracción o un derivado de filtro solar, y m es un número entero comprendido entre 0 y 6, en presencia de al menos un principio activo de filtro solar, para atrapar los principios de filtro en el interior de la matriz sol-gel formado.

Traducción de Patente Europea E98900657 (fecha de solicitud, 15/01/1998).-- Prioridad: IL1997011697120022.-- Titulares: Yissum Research Development Company of the Hebrew University of Jerusalem, Consejo Superior de Investigaciones Científicas (CSIC).

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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