Asphalt-containing organic fibers

Details Asphalt-containing organic fibers Asphalt-containing organic fibers

D - Textiles, Paper

01

F

D01F 9/00 (2006.01) C08L 95/00 (2006.01) D01D 5/18 (2006.01)

Patent

CA 2260159

Asphalt/polymer fibers (22) include, by weight, 30 % to 85 % polymeric material and 15 % to 70 % asphaltic material, where the polymeric material has a melt flow index of no more than about 35 grams/10 minutes. Preferably, the combination of polymeric material and asphaltic material has a melt flow index of from 80 grams/10 minutes to 800 grams/10 minutes. The asphaltic material is preferably asphalt having a softening point of from 82 ~C to 177 ~C. The polymeric material is preferably a polymer selected from polypropylene, polyethylene, polystyrene, polyesters, ethylene copolymers, acrylates, methacrylates, and mixtures of these polymers. The organic fibers of asphalt/polymer may be intermingled with mineral reinforcing fibers (52) and formed into products such as mats (34).

Des fibres de polymère/asphalte contiennent, en poids, 30 à 85 % de matière polymère et 15 à 70 % de matière asphaltique, la matière polymère présentant un indice de fusion d'au plus 35 grammes/10 minutes. La combinaison de matière polymère et de matière asphaltique présente, de préférence, un indice de fusion compris entre 80 grammes/10 minutes et 800 grammes/10 minutes. La matière asphaltique est de préférence de l'asphalte présentant un point de ramollissement compris entre 82 ·C et 177 ·C. La matière polymère est de préférence un polymère choisi parmi polypropylène, polyéthylène, polystyrène, polyesters, copolymères éthyliques, acrylates, méthacrylates et des mélanges de ceux-ci. Les fibres organiques d'asphalte/polymère peuvent être enchevêtrées avec des fibres de renfort minérales et utilisées pour former des produits tels que des mats.

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