Three component filtration material

Details Three component filtration material Three component filtration material

B - Operations, Transporting

01

D

B01D 24/00 (2006.01) B01D 39/02 (2006.01) B01D 39/14 (2006.01) B03C 3/00 (2006.01) B03C 3/14 (2006.01) B03C 3/36 (2006.01) B32B 7/00 (2006.01) D03D 9/00 (2006.01) D03D 15/00 (2006.01) D03D 19/00 (2006.01) D03D 25/00 (2006.01) D04H 3/00 (2006.01)

Patent

CA 2537762

A filter material comprising a blend of at least three types of fibers: (a) polypropylene fibers (b) polymethaphenylene isophtalamide fibers and (c) fibers of a third type selected from the group of acrylic and modacrylic. In a preferred embodiment, the blend contains about ten weight percent polymethaphenylene isophtalamide fibers, about 50 weight percent polyprophylene fibers and about 40 weight percent modacrylic fibers. Performance of the blend is superior to the prior art filtration materials, especially at the preferred compositions.

L'invention concerne un matériau filtre comprenant un mélange d'au moins trois types de fibres : (a) des fibres de polypropylène ; (b) des fibres d'isophtalamide polyméthaphénylène et (c) des fibres d'un troisième type, sélectionnées parmi le groupe constitué d'acrylique ou de modacrylique. Dans un mode de réalisation préféré, le mélange contient environ dix pour-cent en poids de fibres d'isophtalamide polyméthaphénylène, environ 50 pour-cent en poids de fibres de polypropylène et environ 40 pour-cent en poids de fibres de modacrylique. Les performances du mélange sont supérieures à celles des matériaux filtre classique, en particulier sur des compositions préférées.

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