Cellulose fibre

D - Textiles – Paper – 01 – F

Patent

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Details

D01F 2/00 (2006.01) C08J 5/18 (2006.01) C08L 1/02 (2006.01) D01F 2/02 (2006.01)

Patent

CA 2201608

A process is disclosed for producing a cellulose shaped body by the aminoxide process. A suspension of cellulose in an aqueous tertiary aminoxide is transformed into a spinnable solution, is extruded through a spinneret and the thus obtained shaped body passes through a spinning bath. The process has the following characteristics: (a) a suspension is used containing a substance capable of reacting with cellulose and of contributing functional groups that are more nucleophilic than the cellulose hydroxy groups; and/or (b) a cellulose is used that bears functional groups that are more nucleophilic than the cellulose hydroxy groups; and/or (c) a suspension is used containing a polymer that bears functional groups that are more nucleophilic than the cellulose hydroxy groups; and/or (d) a substance is added to the spinnable solution that can react with cellulose and contribute functional groups that are more nucleophilic than the cellulose hydroxy groups; and/or (e) a polymer is added to the spinnable solution that bears functional groups that are more nucleophilic than the cellulose hydroxy groups.

Méthode pour produire un corps mis en forme, en cellulose, par le procédé de l'aminoxyde. Une suspension de cellulose dans un aminoxyde tertiaire aqueux est transformé en une solution filable, extrudé à travers une filière, le corps ainsi mis en forme passant dans un bain de filage. Le procédé possède les caractéristiques suivantes : a) la suspension employée renferme une substance pouvant réagir avec la cellulose et apporter des groupes fonctionnels plus nucléophiles que les groupes hydroxy de la cellulose; et (ou) b) la cellulose utilisée porte des groupes fonctionnels plus nucléophiles que les groupes hydroxy de la cellulose; et (ou) c) la suspension employée contient un polymère qui porte des groupes fonctionnels plus nucléophiles que les groupes hydroxy de la cellulose; et (ou) d) une substance est ajoutée à la solution filable, qui peut réagir avec la cellulose et apporter des groupes fonctionnels plus nucléophiles que les groupes hydroxy de la cellulose; et (ou) e) un polymère est ajouté à la solution filable, lequel porte des groupes fonctionnels qui sont plus nucléophiles que les groupes hydroxy de la cellulose.

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