C - Chemistry – Metallurgy – 01 – G
Patent
C - Chemistry, Metallurgy
01
G
C01G 23/053 (2006.01) A61K 8/11 (2006.01) A61K 8/19 (2006.01) A61K 8/25 (2006.01) A61K 8/29 (2006.01) A61Q 17/04 (2006.01) C09C 1/36 (2006.01) C09D 5/32 (2006.01)
Patent
CA 2259281
The invention concerns titanium dioxide particles coated at least partially: with a first layer of at least a cerium and/or iron compound, and a second layer of at least a metal oxide, hydroxide or oxohydroxide, the said particles having a BET specific surface area of at least 70 m?2¿/g and a density of 2.5. The invention also concerns a method for preparing these particles and their use as anti-UV agent.
La présente invention concerne des particules de dioxyde de titane recouvertes au moins partiellement: d'une première couche d'au moins un composé du cérium et/ou du fer; et d'une deuxième couche d'au moins un oxyde, hydroxyde ou oxohydroxyde métallique, lesdites particules présentant une surface spécifique BET d'au moins 70 m2/g et une densité de l'ordre de 2,5. Elle concerne également un procédé de préparation de ces particules et leur utilisation en tant qu'agent anti-UV.
Chopin Thierry
Dupuis Dominique
Pacaud Bernard
Rhodia Chimie
Robic
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