Titanium dioxide particles

Details Titanium dioxide particles Titanium dioxide particles

C - Chemistry, Metallurgy

09

C

C09C 1/36 (2006.01) A61K 8/11 (2006.01) A61K 8/29 (2006.01) A61Q 17/04 (2006.01) C01G 23/053 (2006.01) C08K 3/22 (2006.01) C08K 9/02 (2006.01) C09D 7/12 (2006.01)

Patent

CA 2253223

Anatase titanium dioxide particles no larger than 100 nm and coated with a layer of a metal oxide, hydroxide or oxohydroxide, said particles having a BET specific surface area of at least 70 m<2>/g and a density of around 2.2. A method for preparing said particles, and the use thereof as an anti-UV agent, in particular for preparing formulations for cosmetics, varnishes, paints and plastics, are also disclosed.

La présente invention concerne des particules de dioxyde de titane anatase de taille d'au plus 100 nm, lesdites particules étant recouvertes d'une couche d'un oxyde, hydroxyde ou oxohydroxyde métallique et présentant une surface spécifique BET d'au moins 70 m2/g et une densité de l'ordre de 2,2. L'invention concerne aussi le procédé de préparation de ces particules et leur utilisation en tant qu'agents anti-UV notamment pour la préparation de formulations pour cosmétiques, pour vernis, pour peintures et dans les plastiques.

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