Compositions for photoprotection

Details Compositions for photoprotection Compositions for photoprotection

A - Human Necessities

01

N

A01N 25/28 (2006.01) A01N 25/22 (2006.01) A01N 53/00 (2006.01) A01P 7/04 (2006.01) A61K 9/50 (2006.01)

Patent

CA 2662563

The present invention relates to a method for improving the lifetime of compounds that are prone to photo-degradation by containing the compounds in microcapsules, which have light protecting particles bonded chemically to the capsule walls. In particular, the present invention relates to a microcapsule comprising a biologically active compound inside the microcapsule and light protecting particles which are chemically bonded to the microcapsule wall material; to the use of such a microcapsule; to a process for preparing such a microcapsule; and to surface-modified light protecting particles and their use in such a microcapsule.

La présente invention concerne un procédé pour améliorer la durée de vie de composés subissant une photodégradation par le fait que les composés sont contenus dans des microcapsules, dont les parois contiennent des particules de protection contre la lumière. En particulier, la présente invention concerne une microcapsule renfermant un composé biologiquement actif et dont la paroi comporte des particules de protection contre la lumière chimiquement liées à la matière de la paroi ; l'utilisation d'une telle microcapsule ; un procédé pour préparer une telle microcapsule ; et des particules de protection contre la lumière modifiées en surface et leur utilisation dans une telle microcapsule.

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