METHOD FOR PRODUCING A REINFORCED FIBER COMPOSITE

The invention relates to a method for producing a reinforced fiber composite which contains cellulosic fibers, the cellulose being present in the crystalline structure cellulose II, by bringing said fiber composite into contact with an aqueous solution of N-methylmorpholin-N-oxide (NMMO) at an eleva...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	FIRGO, HEINRICH, SCHLOSSNIKL, CHRISTIAN, AMBROSCH, SIEGFRIED, RUEF, HARTMUT, JURKOVIC, RAIMUND
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BRAIDING COTTON-WOOL FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR IMPREGNATING OR COATING OF PAPER KNITTING LACE-MAKING LAUNDERING MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL NON-WOVEN FABRICS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G TREATMENT OF TEXTILES OR THE LIKE TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS TRIMMINGS WADDING
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Beschreibung
Zusammenfassung:	The invention relates to a method for producing a reinforced fiber composite which contains cellulosic fibers, the cellulose being present in the crystalline structure cellulose II, by bringing said fiber composite into contact with an aqueous solution of N-methylmorpholin-N-oxide (NMMO) at an elevated temperature and subsequently washing said fiber composite. Said method is characterized in that the fiber composite is brought into contact with the aqueous solution in such a way that the reationship -947 + 0.30xlog(10)t + 0.046xT - 3.53xC + 645xlog(10)C where t is the time in minutes during which the fiber composite is kept in contact with the aqueous NMMO solution, T is the temperature of the aqueous NMMO solution in DEG C and C is the concentration of the NMMO in % mass in relation to the aqueous NMMO solution, gives a figure in the region of 0.30 and 1.70 on the condition that the temperature T is less than 130 DEG C and the concentration C lies in the region of 70 to 84 % mass.