Cellulose fibre

D - Textiles – Paper – 01 – F

Patent

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D01F 2/00 (2006.01) D06M 13/248 (2006.01) D06M 13/278 (2006.01)

Patent

CA 2202141

The invention relates to a process for producing cellulose fibres by the amine oxide process in which a solution of cellulose is spun in an aqueous tertiary amine oxide into fibres and the fibres are brought into contact with a cross- linking agent, in which said cross-linking agent is a sulphonium compound of formula (I) in which R1 is CH2CH2Z, alkyl, aryl, substituted alkyl or a heterocycle, Z is halogen, sulphato, thiosulphato, phosphato or hydroxy and Y- is an anion, and/or a sulphonium compound of formula (II) in which OW is the radical of a polybasic acid in salt or acid form and R2 is CH2CH2OW, alkyl, aryl, substituted alkyl or a heterocycle.

L'invention concerne un procédé pour produire des fibres cellulosiques selon le procédé à l'oxyde d'amine, dans lequel une solution de cellulose est filée dans un oxyde d'amine tertiaire aqueux pour donner des fibres et ces fibres sont amenées en contact avec un agent de réticulation. Ce procédé est caractérisé en ce que ledit agent de réticulation est un composé de sulfonium de formule (I) dans laquelle R¿1? est CH¿2?CH¿2?Z, alkyl, aryl, alkyl substitué ou un hétérocycle, Z est halogène, sulfato, thiosulfato, phosphato ou hydroxy, et Y?-¿ est un anion, et/ou un composé de sulfonium de formule (II) dans laquelle OW est le reste d'un acide polybasique sous forme de sel ou d'acide, et R¿2? est CH¿2?CH¿2?OW, alkyle, aryle, alkyle substitué, ou un hétérocycle.

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