Cellulose fibers and their use in reducing voc emissions

Details Cellulose fibers and their use in reducing voc emissions Cellulose fibers and their use in reducing voc emissions

C - Chemistry, Metallurgy

08

L

C08L 97/02 (2006.01) B01D 53/00 (2006.01) B29C 35/00 (2006.01) B29C 70/02 (2006.01) C08F 2/44 (2006.01) C08L 101/00 (2006.01)

Patent

CA 2446227

Cellulosic materials are used for reducing VOC emission during polymer processing. The cellulosic material is prepared from any of several agricultural by-products including cotton burrs, cotton stalks, corn stalks, flax, hemp, wood flour, and many other plant materials. In one aspect, the present involves the use of the cellulosic material to absorb VOCs during the curing of thermoset resins when VOCs are released during the polymerization process. The cellulosic material is added directly to the wet resin surface during cure or to the liquid resin prior to processing. In the latter case, cotton burrs and other cellulosic materials having a lignin content of from about 5 to about 10% allow the cellulosic material to be incorporated into the resin with beneficial results. The cellulosic material is also used in filter elements or adsorption beds to reduce VOC emission during polymerization of both thermoplastic and thermoset resins.

Cette invention concerne l'emploi de matériaux cellulosiques en tant qu'agents permettant de réduire les émissions de carbone organique volatile pendant la préparation de polymères. Le matériau cellulosique est obtenu à partir de l'un quelconque de multiples sous-produits agricoles tels que capsules de coton, les pédoncules de coton, pédoncules de maïs, lin, chanvre ou farine de bois. Selon un mode de réalisation, on utilise un matériau cellulosique pour absorber les émissions de carbone organique volatile pendant la prise de résines thermodurcissables lors de la libération desdites émissions pendant le processus de polymérisation. Le matériau cellulosique est ajouté directement sur la surface de la résine humide pendant la prise ou dans la résine liquide avant traitement. L'incorporation dans la résine de capsules de coton et autres matériaux cellulosiques présentant une teneur en matière ligneuse comprise entre 5 et 10 % environ donne des résultats utiles. Ce matériau cellulosique s'utilise également dans des éléments filtrants ou des lits d'adsorption pour réduire les émissions de carbone organique volatile pendant la polymérisation de résines tant thermoplastiques que thermodurcissables.

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