C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
C01F 11/18 (2006.01) C08K 3/26 (2006.01) C08K 9/04 (2006.01) C09D 5/34 (2006.01) C09K 3/10 (2006.01)
Patent
CA 2346393
The invention concerns the selection of an ultrafine natural calcium carbonate, optionally treated with one or several fatty acids or one or several salts or mixtures thereof, and its use as rheology regulator for polymer compositions. The BET specific surface area according to ISO standard 4652 is 14 to 10 m<2>/g, and the oil absorption is higher than 16 measured according to the ISO 787-V standard (Rub-out method). The use of said ultrafine calcium carbonate enhances the conditions for mixing the constituents and manufacturing as well as the properties of the end product.
L'invention concerne la sélection d'un carbonate de calcium naturel broyé à une grande finesse, éventuellement traité avec un ou plusieurs acides gras ou un ou plusieurs de leurs sels ou leurs mélanges, et son utilisation comme régulateur de rhéologie pour les compositions polymériques. La surface spécifique est de 14 à 30 m2/g mesurée selon la méthode B.E.T. norme ISO 4652, et la prise d'huile est supérieure à 16 mesurée selon la norme ISO 787-V (Rub-out method). On améliore les conditions du mélange des constituants et de la fabrication, ainsi que les propriétés du produit final.
Blanchard Pierre
Gysau Detlef
Loman Henny (decede)
Trouve Patrick
Omya Development Ag
Pluss-Staufer Ag
Robic
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