Compositions and methods incorporating photocatalysts

Details Compositions and methods incorporating photocatalysts Compositions and methods incorporating photocatalysts

C - Chemistry, Metallurgy

09

D

C09D 183/04 (2006.01) A61K 8/18 (2006.01) C08J 7/04 (2006.01) C09D 129/04 (2006.01) C09D 139/06 (2006.01) C09D 167/04 (2006.01) C09D 183/06 (2006.01) C09D 183/08 (2006.01) C11D 1/00 (2006.01) D06M 15/643 (2006.01)

Patent

CA 2759043

The present invention includes compositions comprising an active material having groups capable of covalent attachment to a substrate in the presence of an acid or a base, a photocatalyst capable of generating an acid or a base upon exposure to light, and a vehicle. Also included herein is a method for treating a substrate with these compositions. The method includes the steps of applying at least one active material having functional groups to the substrate, applying a photocatalyst to the substrate, and exposing the photocatalyst and the at least one active material to light for forming covalent attachments between the functional groups and constituent groups on the substrate. The compositions and methods described herein are useful in consumer care and personal care product applications.

La présente invention concerne des compositions comprenant un matériau actif ayant des groupes capables de liaison covalente à un substrat en présence d'un acide ou une base, un photocatalyseur capable de générer un acide ou une base après exposition à la lumière, et un véhicule. La présente invention concerne en outre un procédé pour traiter un substrat avec ces compositions. Le procédé comprend les étapes d'application d'au moins un matériau actif ayant des groupes fonctionnels sur le substrat, d'application d'un photocatalyseur sur le substrat, et d'exposition du photocatalyseur et de l'au moins un matériau actif à la lumière pour former des liaisons covalentes entre les groupes fonctionnels et les groupes constituants sur le substrat. Les compositions et procédés présentement décrits sont utiles dans des applications de produit d'article de soin de consommation et de soin personnel.

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