A - Human Necessities – 24 – D
Patent
A - Human Necessities
24
D
A24D 3/10 (2006.01) A24D 3/08 (2006.01) A24D 3/16 (2006.01) B01J 20/06 (2006.01) B01J 20/08 (2006.01) B01J 20/10 (2006.01) B01J 20/16 (2006.01) B01J 20/20 (2006.01) B01J 20/26 (2006.01) B01J 20/28 (2006.01)
Patent
CA 2716876
The invention relates to a highly cohesive composite material, formed of at least one polymer and at least one compound chosen from mineral oxides, silicoaluminates and activated carbon, said composite material having: - a number median particle size of at least 150 µm, - a pore volume (Vd1), constituted of pores of diameter between 3.6 and 1000 nm, of at least 0.4 cm3/ g, and - a cohesion index CI N, equal to the ratio (number median particle size after an air pressure stress of 4 bar)/(number median particle size without air pressure stress (0 bar)), greater than 0.40. It also relates to a method for preparing the composite material. It also relates to the use of this composite material as a liquid support, catalyst support, additive or for liquid or gas filtration, in particular in cigarette filters.
Linvention concerne un matériau composite hautement cohésif, formé dau moins un polymère et dau moins un composé choisi parmi des oxydes minéraux, des silicoaluminates et le charbon actif, ledit matériau composite ayant : - une taille de particule médiane en nombre dau moins 150 µm, - un volume de pore (Vd1) constitué de pores de diamètre entre 3,6 et 1 000 nm, dau moins 0,4 cm3/g, et un indice de cohésion CIN, égal au rapport (taille de particule médiane en nombre après une contrainte de pression dair de 4 bars)/(taille de particule médiane en nombre sans contrainte de pression dair (0 bar)), supérieur à 0,40. Elle concerne également un procédé de préparation du matériau composite. Elle concerne également lutilisation de ce matériau composite comme support liquide, support de catalyseur, additif ou pour filtration de liquide ou de gaz, en particulier dans les filtres de cigarette.
Habeck Carsten
Hummel Andreas
Lapersonne Philippe
Viot Jean-Francois
Rhodia Operations
Robic
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