C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 1/12 (2006.01) A24D 3/02 (2006.01) A24D 3/06 (2006.01) A24D 3/08 (2006.01) A24D 3/16 (2006.01) B01J 20/16 (2006.01) B01J 20/20 (2006.01) B01J 20/285 (2006.01) B01J 20/30 (2006.01) B01J 32/00 (2006.01) C08J 3/14 (2006.01) C08K 3/04 (2006.01) C08K 3/36 (2006.01) C08K 7/24 (2006.01)
Patent
CA 2663549
The invention relates to a composite material of high cohesive strength, formed from at least one polymer and from at least one compound that is chosen from mineral oxides, aluminosilicates and active carbon, said composite material possessing: a mean particle size of at least 100 mm, a pore volume (Vd1) formed by pores with a diameter of between 3.6 and 1000 nm, equal to at least 0.2 cm3/g, a cohesive strength such that its content of particles with a size of less than 100 mm, obtained after being subjected to an air pressure of 2 bar, is less than 1.5%, preferably 0.0%, by volume. The invention also relates to a method of preparing said composite material. It also relates to the use of this composite material as liquid support, catalyst support, additive, or for liquid or gas filtration, in particular in cigarette filters.
L'invention concerne un matériau composite de cohésion élevée, formé d'au moins un polymère et d'au moins un composé choisi parmi les oxydes minéraux, les silico-aluminates et le charbon actif, ledit matériau composite possédant : une taille médiane de particules d'au moins 100 µm, un volume poreux (Vd1 ), constitué par les pores de diamètre compris entre 3,6 et 1000 nm, d'au moins 0,2 cm3/g, une cohésion telle que son taux de particules de taille inférieure à 100 µm obtenu après une contrainte de pression d'air de 2 bars est inférieur à 1,5 %, de préférence égal à 0,0 %, en volume. Elle est également relative à un procédé de préparation de matériau composite. Elle concerne aussi l'utilisation de ce matériau composite comme support de liquide, support de catalyseur, additif ou pour la filtration liquide ou gazeuse, en particulier dans les filtres à cigarettes.
Eberhardt Robert
Perin Eric
Rhodia Operations
Robic
LandOfFree
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