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EP2235253B1 - Procédé de traitement de corps moulés cellulosiques - Google Patents

Procédé de traitement de corps moulés cellulosiques Download PDF

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Publication number
EP2235253B1
EP2235253B1 EP20090704213 EP09704213A EP2235253B1 EP 2235253 B1 EP2235253 B1 EP 2235253B1 EP 20090704213 EP20090704213 EP 20090704213 EP 09704213 A EP09704213 A EP 09704213A EP 2235253 B1 EP2235253 B1 EP 2235253B1
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EP
European Patent Office
Prior art keywords
chitosan
dispersion
process according
fibers
fibres
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EP20090704213
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German (de)
English (en)
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EP2235253A1 (fr
Inventor
Sigrid Redlinger
Werner Richardt
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Lenzing AG
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Lenzing AG
Chemiefaser Lenzing AG
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
    • D06M15/03—Polysaccharides or derivatives thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/08—Processes in which the treating agent is applied in powder or granular form
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31971—Of carbohydrate
    • Y10T428/31975—Of cellulosic next to another carbohydrate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2762—Coated or impregnated natural fiber fabric [e.g., cotton, wool, silk, linen, etc.]
    • Y10T442/277—Coated or impregnated cellulosic fiber fabric

Definitions

  • the invention relates to a process for the treatment of a cellulosic molding.
  • the invention relates to a method for modifying the properties of cellulosic moldings by means of chitosan.
  • Chitin and chitosan are natural, biodegradable, non-toxic, non-allergenic, bioactive and biocompatible polymers and similar in their structure to cellulose.
  • Chitin is derived from crustacean casing, a waste product of the crab and shrimp industry.
  • Chitosan is composed of poly (1,4) -2-amino-2-deoxy-beta-D-glucose and is obtained by deacetylation of chitin (poly (1,4) -2-acetamide-2-deoxy-beta-D Glucose).
  • chitin poly (1,4) -2-acetamide-2-deoxy-beta-D Glucose
  • solubility - chitin is insoluble in water, organic solvents, dilute acids and alkalis - chitosan, which is soluble in dilute acids, aqueous methanol and glycerine, is of far greater importance.
  • Fields of application for chitin and chitosan are in biotechnology for the immobilization of cells and enzymes, in medicine for wound treatment, in the food sector as food additive and preservative, in agriculture for seed conservation, in sewage systems as flocculants and chelating agents with heavy metals.
  • Chitosan fibers find their application in the medical field, for example as wound coverings and surgical suture threads due to the antibacterial properties and the growth inhibition on pathogenic germs.
  • Chitin or chitosan can be degraded enzymatically or hydrolytically by the body's own enzymes and are therefore absorbable fibers.
  • the effect of these natural polymers in wound healing consists in the gradual release of N-acetyl-glucosamine, the mucopolysaccharide organization of the collagen and the positive influence on tissue growth in the course of wound healing ( EP 0 077 098 . US 4309534 . JP81 / 112937 . JP84 / 116418 and many more).
  • viscose fibers with incorporated chitin / chitosan for example under the trade name Crabyon (Omikenshi Co.) and Chitopoly (Fuji Spinning Co.).
  • chitosan-incorporated viscose fibers for example under the trade name Crabyon (Omikenshi Co.) and Chitopoly (Fuji Spinning Co.).
  • These fibers are prepared, for example, by dispersing chitosan or acetylated chitosan in powder form having a particle size of less than 10 ⁇ m in an amount of from 0.5 to 2% by weight in water and adding the viscose spinning solution ( US 5,320,903 ). Then fibers are produced by the conventional viscose or polynosic process.
  • chitosan-incorporated viscose fibers have increased dye affinity, increased water retention, anti-fungicidal and odor-inhibiting properties, however also known for viscose fibers low wet strength. Since chitosan prevents the growth of bacteria harmful to the skin and eliminates allergic effects, eg chitopoly tissues are particularly suitable for dermatitis patients.
  • the fibers thus obtained contain the finest chitosan particles, since the chitosan is not soluble in the spinning mass.
  • chitosan In order to ensure the effect of the chitosan in the final product, moreover, an amount of at least about 10% by weight of chitosan must be incorporated into the fibers, since only then is sufficient chitosan on the fiber surface. The chitosan incorporated in the fibers is inaccessible and therefore ineffective.
  • lyocell fibers solvent-spun cellulose fibers made by the amine oxide process
  • chitin - cellulose fibers called “chitulose”
  • a solvent selected from dimethylimidazolines / LiCl, dichloroacetate / chlorohydrocarbon, dimethylacetamide / LiCl, N-methylpyrrolidone / LiCl and making yarns by the wet spinning process become.
  • NMMO is not mentioned.
  • the KR-A-2002036398 describes the incorporation of elaborately prepared chitosan derivatives with quaternary ammonium groups in fibers.
  • a dope-soluble chitosonium polymer (a salt of chitosan with an inorganic or organic acid) into the lyocell fiber by addition to the dope or a precursor thereof.
  • Nano-chitosans are understood to mean approximately spherical solids which have a mean diameter in the range from 10 to 300 nm and, due to the small particle diameter, are interposed between the fibrils.
  • the production of nano-chitosans takes place by spray-drying, evaparation or relaxation of supercritical solutions.
  • WO 01/32751 describes a process for the preparation of nanoparticulate chitosan for cosmetic and pharmaceutical preparations having particle diameters of 10 to 1000 nm, in which the pH of an aqueous acidic solution of chitosan in the presence of a surface modifier is raised so far that it comes to precipitation of the chitosan.
  • WO 91/00298 describes the preparation of microcrystalline chitosan dispersions and powders with particle diameters of 0.1 to 50 microns, in which one raises the pH of an aqueous acidic chitosan solution so far that it comes to the precipitation of the chitosan.
  • the WO 97/07266 describes the treatment of a lyocell fiber with a 0.5% acetic acid chitosan solution.
  • the object of the present invention is to provide a process for the treatment of cellulosic moldings which does not have the aforementioned problems of incorporation of chitosan into fibers and which is suitable for various types of cellulose fibers, never dried.
  • the chitosan is to be fixed in particular on the fiber surface of cellulose regenerated fibers (lyocell fibers, modal fibers, viscose fibers, polynosic fibers) preferably during the manufacturing process so that the chitosan is still present on the final product after a series of household washes ,
  • chitosan particles are present in the dispersion preferably in a particle size of from 0.1 to 1500 .mu.m, particularly preferably from 1 to 800 .mu.m.
  • the pH of the dispersion is preferably more than 7, particularly preferably 9 to 11.
  • chitin is intended to mean a ⁇ -1,4-linked polymer of 2-acetamido-2-deoxy-D-glucose having a degree of deacetylation of 0%
  • Chitosan is an at least partially deacetylated ⁇ -1,4-linked polymer of 2-acetamido-2-deoxy-D-glucose.
  • the method according to the invention has the advantage that an incorporated chitosan is not accessible in the interior of the shaped body. Only chitosan on the surface of the molding can come in contact with the skin and thus develop its positive effect. Therefore, in order to achieve the same amount of chitosan as impregnated on the surface of a molded article, much higher amounts of chitosan must be used in the incorporation.
  • Opposite in the WO 2004/007818 described method in the inventive method has the advantage that the impregnation described there with an acidic solution of a chitosonium polymer in the treatment of never-dried viscose, modal or Polynosicmaschinen with subsequent steaming does not work. There are only very low Chitosanauflagen achieved, and the implementation of this method is not possible without modification of existing plants.
  • inventive method is cheaper than that in the WO 2004/007818 described method, since preferably cheaper chitosan types can be used (see below).
  • the content of the chitosan particles in the dispersion is 0.001 to 10% by weight, preferably 0.1 to 2% by weight.
  • chitosan types which are soluble in an acid (for example lactic acid) and, when precipitated with alkali, give dispersions with chitosan particles having a particle size of 0.1 to 1500 ⁇ m, are suitable for carrying out the process according to the invention.
  • the solubility of a chitosan type in acids depends essentially on the degree of de-acetylation of the chitosan. If the de-acetylation is too low, the solubility will be worse.
  • relatively high molecular chitosan types having a viscosity of 1% strength solution in 1% strength acetic acid at 20 ° -25 ° C. of 200 mPa.s or more, measured with Brookfield Viscosimeter at 30 rpm
  • Higher molecular weight chitosans are generally less expensive.
  • the shaped body treated according to the invention is preferably in the form of fibers.
  • the fibers are lyocell fibers, modal fibers, polynosic fibers and / or viscose fibers.
  • Lyocell has been awarded by BISFA (The International Bureau for the Standardization of Man Made Fibers) and stands for cellulose fibers made from solutions of cellulose in an organic solvent. Prefers are used as solvents tertiary amine oxides, in particular N-methyl-morpholine-N-oxide (NMMO). A process for the production of Lyocell fibers is eg in the US-A 4,246,221 described.
  • BISFA The International Bureau for the Standardization of Man Made Fibers
  • NMMO N-methyl-morpholine-N-oxide
  • Viscose fibers are fibers obtained from an alkaline solution of cellulose xanthogenate (viscose) by precipitation and regeneration of the cellulose.
  • Modal fibers are cellulosic fibers that are characterized by high wet tensile strength and high wet modulus (the force needed to stretch a fiber when wet by 5%), as defined by BISFA.
  • the fibers are never in a dried form.
  • the fibers may be present in particular in the form of a non-woven fabric, as occurs during the production process of lyocell, viscose, modal and Polynosicstapelmaschinen as an intermediate.
  • This variant has the advantage that the treatment can be implemented without the necessity of apparative changes in an existing plant for the production of lyocell, viscose, modal or polynosic fibers. Treatment of never-dried viscose, modal or polynosic fibers with chitosan has not previously been described.
  • the fibers may have a residual moisture of 50% to 500% before treatment.
  • the molding After the treatment with the dispersion containing chitosan particles, the molding may be subjected to superheated steam treatment. As a result, an additional fixation of the chitosan on the surface of the molding can be achieved.
  • chitosan is preferably dissolved in an inorganic or organic acid (e.g., lactic acid), and then alkali is added to precipitate the chitosan.
  • an aqueous alkali hydroxide solution e.g. NaOH
  • the final pH is preferably 9 to 11.
  • the chitosan dispersion thus obtained may, for example, be used for continuous treatment with an initially moist, e.g. Pressing to a defined moisture of 50% to 500% adjusted cellulose Regeneratmaschinevlies be brought into contact.
  • the nonwoven may e.g. be soaked by spraying. For this, e.g. without the need for a conversion of existing production facilities in plants for the production of viscose fibers and modal fibers the so-called bleaching field can be used.
  • the web After impregnation, the web can be pressed to a defined moisture content of 50% - 500% and the squeezed treatment liquor can be returned to the impregnation circuit.
  • the fleece is either treated with superheated steam and then washed neutral or washed neutral without steam treatment, scavenged and dried.
  • the dispersion is prepared in situ by metering an acidic solution of chitosan into an alkaline treatment liquid, for example an oiling bath, and the molding is treated simultaneously with the treatment liquid and the dispersion formed in situ .
  • an alkaline treatment liquid for example an oiling bath
  • the acidic chitosan solution is metered, for example, into a fiber-conditioning bath which has a pH of> 7, the chitosan dispersion is generated in situ and the fiber is simultaneously impregnated with chitosan and then refined. Subsequently, the fiber can be dried without washing.
  • the shaped body is subjected to a treatment with a crosslinking agent before or after drying.
  • Suitable crosslinking agents are for example in the WO 99/19555 described. Such crosslinking agents are applied to the fiber in an alkaline medium. If, in a typical procedure, the fiber is brought into contact with the crosslinking agent in an alkaline medium, if necessary by means of superheated steam fixes the crosslinking agent and then applying an acidic solution of chitosan to the fiber, also due to the alkalinity of the fiber surface in situ formation of an alkaline Chitosan dispersion.
  • the alkaline chitosan dispersion can also be prepared in situ by applying an acidic chitosan solution to an alkaline or fiber surface alkaline due to alkaline pretreatment.
  • the present invention also relates to a shaped article obtainable by the method according to the invention.
  • the shaped body according to the invention can be present in particular in the form of fibers, preferably lyocell fibers, modal fibers, polynosic fibers and / or viscose fibers.
  • a characteristic of the moldings obtainable by the process according to the invention is that the surface of the mold has punctiform distributed chitosan particles.
  • the surface of the mold has punctiform distributed chitosan particles.
  • a film-like distribution of chitosan particles on the surface is detectable.
  • the present invention also relates to the use of a shaped article according to the invention as an antibacterial product, as an odor-inhibiting product, in nonwovens products and / or as filler fiber.
  • Preferred fields of application of chitosan-containing cellulose regenerate fibers according to the invention comprise textiles worn close to the body, such as, for example, mildly antibacterial, odor-inhibiting, skin-friendly properties. Underwear or socks, textiles for people with sensitive skin (atopic dermatitis), bed linen and home textiles.
  • the fiber of the invention can be used both alone and in blends with other fibers, such as e.g. Cotton, polyester fibers and unmodified cellulose fibers (e.g., lyocell fibers).
  • FIG. 1 shows the distribution of the chitosan particles on the surface of a lyocell fiber produced according to the invention.
  • FIG. 2 shows the distribution of chitosan on the surface of a lyocell fiber, which after the in WO 2004/007818 described method (application of an acidic solution of a chitosonium polymer) was prepared.
  • chitosan To prepare 500 ml of a 0.4% chitosan solution, 2 g of chitosan are made up to 497.6 g with distilled water, admixed with 2.4 g of lactic acid (81.2%), stirred until the chitosan is completely dissolved, and then with stirring adjusted to a pH of 11.0 with 5% NaOH solution. The result is an approximately 0.4% chitosan dispersion.
  • the determination of the chitosan particle size in the dispersion takes place by means of laser diffraction (measuring device Fa. Sympatec / Helos Quixel, wet dispersing system).
  • the determination of the chitosan coating on the fiber is carried out by measuring the N content (LECO FP 328 nitrogen analyzer) by annealing the sample.
  • a hot water treatment is carried out: boil the card sliver of the chitosan impregnated fibers at 80 to 90 ° C in the beaker (liquor ratio 1:20, after 20 min at 80 to 90 ° C water, after Reach the temperature again for 20 min.
  • Table 1 Chitosan Pad % Chitosan 85/200 / A1 % Chitosan TM2284 % Chitosan after hot water treatment 85/200 / A1 % Chitosan n.
  • chitosan To prepare 500 ml of a 0.2% chitosan solution, 1 g of chitosan are made up to 498.8 g with distilled water, 1.2 g of lactic acid (81.2%) are added, stirred until the chitosan is completely dissolved and then while stirring 5% with NaOH to a pH of 10.0. The result is an approximately 0.2% chitosan dispersion.
  • Knit stockings were made from the fibers and the permanence of the chitosan overlay was tested under high temperature polyester dyeing conditions ("HAT permanence").
  • chitosan To prepare 500 ml of a 0.2% chitosan solution, 1 g of chitosan are made up to 498.8 g with distilled water, 1.2 g of lactic acid (81.2%) are added, stirred until the chitosan is completely dissolved and then while stirring 5% with NaOH to a pH of 10.0. The result is an approximately 0.2% chitosan dispersion.
  • Knit stockings were made from the fibers and the permanence of the chitosan overlay was tested under high temperature polyester dyeing conditions ("HAT permanence").
  • chitosan To prepare 500 ml of a 0.6% chitosan solution, 3 g of chitosan are made up to 496.4 g with distilled water, 3.6 g of lactic acid (81.2%), stirred until the chitosan is completely dissolved and then with stirring 5% NaOH to a pH of 11.0. The result is an approximately 0.6% chitosan dispersion.
  • the fibers were subjected to a household wash in a washing machine (gentle cycle at 60 ° C, commercially available liquid detergent, dosage according to the manufacturer, fibers in laundry bags, wash after household washing once again by hand, dry). There were three washes done.
  • fibers of the genus Lyocell were produced with 1.7dtex 38 mm and never dried according to the invention with a dispersion of alkaline precipitated chitosan, type TM 2284 (0.2% by weight) in a liquor ratio of 1:20 to a target coverage of 0 , 6% by weight of chitosan impregnated, steamed, washed out, washed and dried.
  • yarns Nm 50 were spun and processed into a textile fabric (single jersey knit), which had 0.4% by weight chitosan coating. After 10 household washes, the chitosan content was still 0.3% by weight.
  • FIG. 1 shows a confocal microscopy image of a prepared according to Example 4 and fluorescein isothyocyanate-dyed fiber. The punctiform distribution of chitosan (bright spots) is clearly visible.
  • FIG. 2 shows the distribution of chitosan on the surface of a lyocell fiber, which after the in WO 2004/007818 described method (application of an acidic solution of a chitosonium polymer) was prepared.
  • the chitosan (bright areas) is distributed like a film on the surface.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Artificial Filaments (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

La présente invention concerne un procédé de traitement d'un corps moulé cellulosique, qui est caractérisé en ce que le corps moulé est mis en contact avec une dispersion alcaline contenant des particules non dissoutes de chitosane. Les particules de chitosane présentes dans la dispersion ont de préférence une granulométrie comprise entre 0,1 et 1500 μm, de préférence entre 1 et 800 μm.

Claims (14)

  1. Procédé pour le traitement d'un corps moulé cellulosique sous la forme de fibres, caractérisé en ce que le corps moulé est mis en contact avec une dispersion alcaline qui contient des particules de chitosane non dissoutes, les fibres sont des fibres de Lyocell, des fibres de Modal, des fibres de Polynosic et/ou des fibres de viscose, et les fibres ne sont jamais séchées.
  2. Procédé selon la revendication 1, caractérisé en ce que les particules de chitosane dans la dispersion se présentent avec une taille de particules de 0,1 à 1500 µm, de préférence de 1 à 800 µm.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la valeur du pH de la dispersion alcaline est supérieure à 7, et s'élève de préférence de 9 à 11.
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que la teneur en particules de chitosane dans la dispersion est de 0,001 à 10 % en poids, de préférence 0,1 à 2 % en poids.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que le chitosane employé pour la préparation de la dispersion présente, dans une solution à 1 % dans de l'acide acétique à 1 %, une viscosité de 200 mPa·s ou plus, vers 20 à 25° C.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que les fibres se présentent sous forme de non-tissé.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'avant le traitement les fibres présentent une humidité résiduelle de 50 % à 500 %.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que le corps moulé est soumis, après le traitement avec la dispersion, à un traitement avec de la vapeur chaude.
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que, pour la préparation de la dispersion, du chitosane est dissous dans un acide inorganique ou organique, et on ajoute ensuite de l'alcali pour faire précipiter le chitosane.
  10. Procédé selon la revendication 9, caractérisé en ce que la dispersion est préparée in situ par dosage d'une solution acide de chitosane dans un liquide de traitement alcalin, de préférence un bain d'avivage, et le corps moulé est simultanément traité avec le liquide de traitement et avec la dispersion qui en est issue in situ.
  11. Procédé selon la revendication 9, caractérisé en ce que la dispersion est préparée in situ par application d'une solution acide de chitosane sur une surface fibreuse alcaline en raison d'un traitement préalable alcalin.
  12. Corps moulé qui peut être obtenu par un procédé selon l'une des revendications 1 à 11.
  13. Corps moulé selon la revendication 12, caractérisé en ce que la surface du corps moulé comporte des particules de chitosane réparties de manière ponctuelle.
  14. Utilisation d'un corps moulé selon l'une des revendications 12 à 13 à titre de produit antibactérien, de produit désodorisant, dans des produits non-tissés et/ou à titre de fibres de remplissage.
EP20090704213 2008-01-22 2009-01-19 Procédé de traitement de corps moulés cellulosiques Active EP2235253B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0008208A AT506334B1 (de) 2008-01-22 2008-01-22 Verfahren zur behandlung cellulosischer formkörper
PCT/AT2009/000015 WO2009092121A1 (fr) 2008-01-22 2009-01-19 Procédé de traitement de corps moulés cellulosiques

Publications (2)

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EP2235253A1 EP2235253A1 (fr) 2010-10-06
EP2235253B1 true EP2235253B1 (fr) 2012-06-20

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US (1) US8524326B2 (fr)
EP (1) EP2235253B1 (fr)
JP (1) JP2011510183A (fr)
KR (1) KR101662678B1 (fr)
CN (1) CN101932767A (fr)
AT (1) AT506334B1 (fr)
ES (1) ES2392481T3 (fr)
TW (1) TWI401350B (fr)
WO (1) WO2009092121A1 (fr)

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
AT507386A1 (de) * 2008-09-22 2010-04-15 Chemiefaser Lenzing Ag Verfahren zur behandlung cellulosischer formkörper
AT509289B1 (de) * 2009-12-28 2014-06-15 Chemiefaser Lenzing Ag Funktionalisierter cellulosischer formkörper und verfahren zu seiner herstellung
EP2550383B1 (fr) 2010-03-25 2014-06-18 Lenzing Aktiengesellschaft Utilisation d'une fibre de cellulose
EP2368532A1 (fr) 2010-03-25 2011-09-28 Ganzoni & Cie AG Textiles de compression contenant des fibres revêtues de chitosan
EP2540263A1 (fr) 2011-06-29 2013-01-02 Sigvaris Inc. Vêtements à compression graduée
US8899277B2 (en) * 2012-08-03 2014-12-02 Shin Era Technology Co., Ltd. Manufacturing method of medical textiles woven from chitosan containing high wet modulus rayon fibre
CN113882027A (zh) * 2021-11-02 2022-01-04 冯建国 基于甲壳素的产品制备方法、产品与结构

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ES2392481T3 (es) 2012-12-11
CN101932767A (zh) 2010-12-29
JP2011510183A (ja) 2011-03-31
TW200932993A (en) 2009-08-01
AT506334A1 (de) 2009-08-15
US8524326B2 (en) 2013-09-03
KR20100109964A (ko) 2010-10-11
EP2235253A1 (fr) 2010-10-06
AT506334B1 (de) 2010-12-15
WO2009092121A1 (fr) 2009-07-30
US20100297408A1 (en) 2010-11-25
TWI401350B (zh) 2013-07-11
KR101662678B1 (ko) 2016-10-05

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