Treatment of natural polymer based materials and the...

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B27K 3/34 (2006.01) B27K 5/00 (2006.01) D06M 13/325 (2006.01) D06M 13/50 (2006.01) D21H 25/02 (2006.01) D21H 25/04 (2006.01) D21H 25/06 (2006.01) D21H 17/07 (2006.01) D21H 17/56 (2006.01) D21H 23/30 (2006.01)

Patent

CA 2398973

A method for modifying a substrate containing a natural polymeric material to improve its interaction with other materials, the method comprising: A) Treating the substrate containing the natural polymeric material with a modifying agent selected from the group consisting of organo-functional coupling agents and multi-functional amine containing organic compounds; and B) optionally exposing the substrate containing natural polymeric material with one or more treatments selected from the group consisting of: i) subjecting the substrate to extraction with a solvent to reduce the content of extractable materials associated with the natural polymeric material prior to or during treatment with the modifying agent; ii) treatment with a physical field selected from static physical fields, high-frequency alternating physical fields and combinations of two or more thereof either prior to, during or after treatment with the modifying agent; and iii) oxidation of at least part of the natural polymeric material prior to or during treatment with the modifying agent.

L'invention concerne un procédé de modification d'un substrat contenant une matière polymère naturelle, afin d'améliorer son interaction avec d'autres matières, le procédé consistant A) à traiter le substrat contenant la matière polymère naturelle avec un agent de modification sélectionné dans le groupe constitué par des agents de couplage organo-fonctionnels et des composés organiques contenant des amines multi-fonctionnelles, B) à éventuellement exposer le substrat contenant la matière polymère naturelle à un ou à plusieurs traitements sélectionnés parmi les traitements consistant i) à soumettre le substrat à une extraction au moyen d'un solvant pour réduire le contenu de matières extractibles associées à la matière polymère naturelle avant ou pendant le traitement utilisant l'agent de modification ; ii) à appliquer un traitement à l'aide d'un champ physique sélectionné parmi des champs physiques statiques, des champs physiques alternés à haute fréquence et des combinaisons des deux avant, pendant ou après traitement utilisant l'agent de modification ; et iii) à oxyder au moins une partie de la matière polymère naturelle avant ou pendant le traitement utilisant l'agent de modification.

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