EP4033027B1 - Verfahren zur herstellung eines biobasierten und veganen kunstledermaterials - Google Patents

Verfahren zur herstellung eines biobasierten und veganen kunstledermaterials Download PDF

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Publication number
EP4033027B1
EP4033027B1 EP21216040.2A EP21216040A EP4033027B1 EP 4033027 B1 EP4033027 B1 EP 4033027B1 EP 21216040 A EP21216040 A EP 21216040A EP 4033027 B1 EP4033027 B1 EP 4033027B1
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Prior art keywords
polyurethane
coagulate
tannins
drying
process according
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English (en)
French (fr)
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EP4033027A1 (de
EP4033027C0 (de
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Paolo Montanelli
Nico Spinelli
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Colonna SpA
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Colonna SpA
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0065—Organic pigments, e.g. dyes, brighteners
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • D06N3/145—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes two or more layers of polyurethanes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
    • D06N3/009—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin by spraying components on the web
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/04—Vegetal fibres
    • D06N2201/042—Cellulose fibres, e.g. cotton
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2203/00—Macromolecular materials of the coating layers
    • D06N2203/06—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N2203/068—Polyurethanes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/10—Properties of the materials having mechanical properties
    • D06N2209/103—Resistant to mechanical forces, e.g. shock, impact, puncture, flexion, shear, compression, tear
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/16—Properties of the materials having other properties
    • D06N2209/1642—Hardnes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2211/00—Specially adapted uses
    • D06N2211/12—Decorative or sun protection articles
    • D06N2211/28—Artificial leather

Definitions

  • the present invention generally relates to the field of the treatment of materials, and more precisely, it refers to a process with reduced environmental impact for the production of a bio-based and vegan imitation leather material, i.e. a material derived completely or at least partially from renewable sources and free of materials of animal origin.
  • the invention also relates to the material obtainable with this process, which is printable to provide the appearance of natural leather and characterized by improved mechanical strength and durability, useful for ensuring high quality performance in a wide range of applications.
  • the physical and mechanical characteristics required from the material are particularly stringent.
  • the material must guarantee sufficient strength and resistance to be able to be sewn, for example, or in any case joined to portions of the same or a different material, to make the finished product in the form of a bag, shoe, belt, and the like.
  • the bio-based raw materials In order to aspire to obtain a material with these characteristics, the bio-based raw materials must obviously be selected with appropriate sustainability characteristics and be subjected to specific, suitable treatments. In their turn, these treatments must guarantee the desired ecology not only of the final product following the treatment, but also of the process itself and of the reagents and solvents used to carry it out.
  • the environmental sustainability of industrial production is a new fundamental request to be aligned with for all kinds of production, with a view to oppose against the environmental degradation and the destruction of natural ecosystems, as well as to respect even the most stringent environmental regulations and to guarantee the health of workers in all stages of the production chain.
  • Document KR 2018 0126735 discloses a process for the manufacture of a faux leather material, bio-based and vegan, with reduced environmental impact and free from treatments with metal salts, comprising the step of applying a polyurethane adhesive agent to a polyurethane from renewable sources. It does not use a polyurethane coagulate treated in a drum with synthetic tannins.
  • the production process of this invention provides for a limited use of chemicals and water, in significantly lower amount than that found in the treatment of animal hides.
  • the process of this invention is free from chromium or other metal treatments, and all chemicals used are compliant with MRSL ( Manufacturing Restricted Substance List ) ZDHC ( Zero Discharge of Hazardous Chemicals ) that limits the use of hazardous chemicals in manufacture processes.
  • a bio-based faux leather material obtainable by this process, its use as replacement material for the animal leather and an article made with it, as respectively defined in the related independent claims annexed herein.
  • the Applicant has found that by treating a bio-based polyurethane coagulate with synthetic tannins in water and applying a polyurethane adhesive to the surface thus treated, the coagulate acquires characteristics of high mechanical resistance, improved with respect to the starting product, and a much greater stability and durability over time, also providing a soft and flexible surface which, following printing, is completely analogous to that of natural leather.
  • bio-based means "completely or at least partially derived from renewable sources”.
  • bio-based polyurethane coagulate is meant herein a product obtained by coagulation of polyurethane obtained from renewable sources on a fabric or on non-woven fabric support.
  • preferred starting materials are polyurethane coagulates prepared by direct coating of the support with polyurethane in water.
  • the support of the present polyurethane coagulate can be made, for example, with a fabric made of natural and / or artificial fibres on which polyurethane has been applied by coagulation.
  • these natural and / or artificial fibres are selected from linen, cotton, hemp, viscose, and blends thereof.
  • viscose is preferred, classifiable as an artificial fibre since it is of natural origin from cellulose, but obtained by chemical and mechanical processing of the cellulose.
  • FSC Form Stewardship Council
  • the polyurethane coagulate is a bio-based polyurethane coagulate on a viscose fabric, consisting essentially of polyurethane obtained from renewable sources and viscose, for instance consisting of approximately 30% of viscose and approximately 70% of polyurethane.
  • synthetic tannins tannic acid derivatives of synthetic origin that are substitution tannins with a reduced environmental impact, selected for example from phenolic, arylsulphonic, hydroxyarylsulphonic, dihydroxydiphenylsulfonic derivatives, and their mixtures or condensation products thereof.
  • synthetic tannins preferably refers to arylsulphonic and hydroxyarylsulphonic derivatives, and more preferably, it refers to condensation products by a methylene bond between arylsulphonic and hydroxyarylsulphonic acids.
  • the process for the manufacture of a faux leather material from renewable sources and not of animal origin of this invention, free from treatments with chrome and other metals and having reduced environmental impact, comprises the steps of:
  • the wetting of the coagulate with water in step i) of this process is carried out for the time necessary to completely and uniformly wet the coagulate tissue, for example for a time of about 30 minutes.
  • the amount of water used is about 200 litres per 10 meters of treated coagulate having a width of about 1.5 meters, a much lower quantity than that usually used in tanning treatments.
  • the temperature in this step is preferably the room temperature and no other additives are added to water, such as surfactants, in order to create a process with a reduced environmental impact in all its aspects and in the various steps.
  • step ii) of treatment with synthetic tannins can be carried out without draining the water from the drum, but simply adding the powdered tannins into the drum at the end of the wetting.
  • these tannins are added in an amount equal to about 6 % by weight with respect to the dry weight of the coagulate to be treated, and leaving the material in the bath for about 30 minutes.
  • the pH of this step ii) is brought to a pH of between 5 and 6, preferably to a pH of approximately 5.2.
  • the present process can optionally comprise a dyeing phase which can be advantageously carried out in the same drum, without discharging the aqueous solution coming from step ii), by adding one or more dyeing agents, preferably selected from azo dyes.
  • dyeing agents preferably selected from azo dyes.
  • one or more fixing operations are carried out by addition of a fixative agent, typically formic acid.
  • a fixative agent typically formic acid. This treatment causes a lowering of the pH, which assists the fixing of the treatment products inside the material.
  • step iii) of this process the drying of the material can be carried out with any drying method suitable for the purpose, in the conditions that any person skilled in this field could identify on the sole basis of their ordinary knowledge.
  • the panels of the material discharged from the drum after the step of treatment with tannins or after the colouring step, if present are dried at room temperature by winding in the appropriate machinery. In this way, about 90% of the water is removed from the material, without heating, as is usually the case for drying these materials.
  • the panels of the material can be subjected to forced drying, for example at a temperature of about 45°C.
  • forced drying method can for example be achieved as in the traditional drying of animal hides by means of a catenary, i.e. placing the material to be dried suspended in air, hanged on special chains to allow it to disperse the last residual moisture present inside the material.
  • a polyurethane adhesive agent is applied onto the material by spray application or, preferably, by means of a roller, until a uniform layer is formed on the material.
  • the polyurethane adhesive agent is an aliphatic polyurethane adhesive.
  • the agents of this family have in fact been identified by the inventors as the best performing products to achieve the desired and necessary adhesion of the finishing layers that will be subsequently applied.
  • the present process before and/or after the application of the polyurethane adhesive agent, provides for the application on the dry material, by spray and/or roller, of an anti-dusting agent, selected for example among the water-based acrylic/polyurethanic agents commonly used in the finishing processes of the tanning industry.
  • an anti-dusting agent selected for example among the water-based acrylic/polyurethanic agents commonly used in the finishing processes of the tanning industry.
  • the present process may also comprise one or more finishing steps by using chemical or mechanical means, to obtain the desired visual or tactile effect; and/or a step of printing the material according to a desired pattern, for example by means of engraving plates or printing machines for leather.
  • Both the one or more finishing steps and the printing step can be carried out according to the methods and with the machinery and reagents commonly used in the treatment of animal hides.
  • the inventors have been able to verify that these finishing and/or printing steps carried out on the material of the invention, first treated with tannins and with the polyurethane adhesive, result in a particularly attractive finished product similar to the appearance and touch of animal hides.
  • bio-based imitation leather material obtained with the process described above which is also subject of this invention, can be used as a replacement for animal hides in any sector, to decorate or make clothing and accessories items, including bags and footwear, but also to cover design objects and furniture, or the interior of cars.
  • the advantages linked to the present invention are manifold.
  • the material resulting from the production process of this invention is particularly attractive once it is printed and soft to the touch, completely similar to animal leather while not having any animal derivation and therefore being a vegan material.
  • all steps of the invention process are moreover carried out in conditions of reduced environmental impact, using non-toxic and not harmful reagents and solvents, under environmentally sustainable temperature and energy consumption conditions.
  • the present process does not use the metal salts, chromium salts in particular, typical of the traditional tanning processes, giving rise to a finished material that can be metal-free and chrome-free.
  • the material obtainable with the process of this invention has acquired much better mechanical properties than those of the starting coagulate so much so that with the material of this invention it has been possible to make complex items such as bags and shoes, by sewing parts of material, cut according to patterns.
  • this process has the surprising effect of improving their functional and performance characteristics, giving rise to a highly performing finished material from a physical and mechanical point of view, extremely durable and stable over time, even as regards colours. Thanks to these characteristics, the material thus obtained can be used successfully not only in the fashion sector, in particular to create and/or decorate clothing and leather goods, but also in the furniture and design sector, and in any other related sector.
  • a further advantage of the process of this invention lies in its simplicity, cheapness and in the fact that each process step it can be carried out using pre-existing machinery and systems used up to now for the tanning treatments of animal hides.
  • powdered synthetic tannins were added to the drum, i.e. condensation product with a methylene bond of arylsulphonic and hydroxyarylsulphonic acids in a measure of 16% by weight on the weight of the starting coagulate panels to be treated.
  • the material was kept in this treatment bath for approximately 30 minutes at a pH of the solution of approximately 5.2.
  • An azo dye in an amount of 20% by weight was then added and the material was kept in this dyeing bath for about 30 minutes.
  • formic acid was added in three portions for fixing the previous treatments, in a first phase of 4 hours 12% of formic acid was added, in a second phase of 30 minutes 4% of formic acid and in a third step of a further 30 minutes 4% formic acid.
  • the material thus treated was extracted from the drum and dried at room temperature by winding in a special machine generally used in leather tanning, then the panels obtained from this first drying were hanged in the catenary and subjected to forced drying at 45°C.
  • a layer of aliphatic polyurethane adhesive in solvent was rolled onto the dry material, which allows the treated base to melt in subsequent finishing applications.
  • Multiple finishing coating layers of water-based acrylic polyurethane were then applied with a roller and spray machine, before passing the material to print a pattern on a hot plate press.
  • the material thus obtained appeared soft to the touch, with an appearance completely similar to that of a leather tanned from animal leather. Furthermore, this material showed better mechanical resistance performances, evaluated by the inventors in particular as resistance to bending in the following experimental tests.
  • Example 1 The same starting polyurethane and viscose coagulate of Example 1 above, not treated with the process of the invention, was subjected to the same mechanical resistance tests described above, in particular to bending resistance tests using a "Bally" flexometer according to the same procedures standard of the aforementioned standard mentioned above.
  • the material not treated with the process of this invention therefore does not have the necessary mechanical strength for use in a similar way to animal hides, and it does not even possess suitable visual and tactile characteristics, as it can also be seen from the images in the figures.

Claims (15)

  1. Verfahren zur Herstellung eines Kunstledermaterials, biobasiert und vegan, mit reduzierter Umweltbelastung und frei von Behandlungen mit Metallsalzen, enthaltend die Schritte:
    i) Benetzen eines Polyurethankoagulats aus erneuerbaren Quellen mit Wasser in einer Trommel;
    ii) Behandeln des Koagulats mit synthetischen Tanninen durch deren Zugabe in die Trommel;
    iii) Trocknen und Aufbringen durch Sprühen und/oder Rollen eines Polyurethanhaftmittels.
  2. Verfahren nach Anspruch 1, ferner enthaltend einen Färbeschritt mit Azofarbstoffen zwischen dem Schritt ii) des Behandelns mit Tanninen und dem Schritt iii) des Trocknens.
  3. Verfahren nach einem der Ansprüche 1 oder 2, ferner enthaltend einen Fixierungsschritt bei saurem pH-Wert zwischen dem Schritt ii) der Behandlung mit Tanninen und dem Schritt iii) des Trocknens oder, falls vorhanden, unmittelbar nach dem Färbeschritt.
  4. Verfahren nach einem der vorangehenden Ansprüche, wobei das Polyurethankoagulat ein Gewebe aus natürlichen und/oder künstlichen Fasern ist, auf das Polyurethan aus erneuerbaren Quellen durch Koagulation aufgebracht wurde.
  5. Verfahren nach Anspruch 4, wobei die natürlichen und/oder künstlichen Fasern ausgewählt sind aus Leinen, Baumwolle, Hanf, Viskose und Mischungen davon.
  6. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Polyurethankoagulat im Wesentlichen aus Viskose und Polyurethan aus erneuerbaren Quellen besteht.
  7. Verfahren nach einem der vorhergehenden Ansprüche, wobei die synthetischen Tannine Substitutionstannine mit verringerter Umweltbelastung sind, ausgewählt aus Phenol-, Arylsulfon-, Hydroxyarylsulfon-, Dihydroxydiphenylsulfon-Verbindungen, Mischungen davon und Kondensationsprodukten davon.
  8. Verfahren nach Anspruch 7, wobei die synthetischen Tannine Kondensationsprodukte durch Methylenbindung von Arylsulfon- und Hydroxyarylsulfonsäuren sind.
  9. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Polyurethanhaftmittel ein aliphatisches Polyurethanhaftmittel ist.
  10. Verfahren nach einem der vorangehenden Ansprüche, ferner enthaltend das Auftragen eines Antistaubmittels durch Sprühen und/oder Rollen auf das Material nach dem Trocknen und vor und/oder nach dem Auftragen des Polyurethanhaftmittels.
  11. Verfahren nach Anspruch 10, wobei das Antistaubmittel aus Acryl/Polyurethan-Mitteln ausgewählt ist.
  12. Verfahren nach einem der vorangehenden Ansprüche, ferner enthaltend Veredelungs- und/oder Bedruckungsschritte des Materials, das aus dem Schritt iii) des Trocknens und Aufbringens eines Haftmittels stammt.
  13. Kunstledermaterial, biobasiert und vegan, erhältlich durch das Herstellungsverfahren der Ansprüche 1 - 12, wobei das Material ein Polyurethankoagulat ist, das aus erneuerbaren Quellen stammt, behandelt durch das Verfahren und mit den taktilen und visuellen Eigenschaften des Tierleders und verbesserter Haltbarkeit, Farbechtheit und mechanischer Beständigkeit in Bezug auf das Ausgangs-Polyurethan-Koagulat.
  14. Verwendung eines Kunstledermaterials nach Anspruch 13 als Ersatzmaterial für Tierleder.
  15. Artikel, der vollständig oder teilweise aus dem Kunstledermaterial nach Anspruch 13 hergestellt ist.
EP21216040.2A 2020-12-22 2021-12-20 Verfahren zur herstellung eines biobasierten und veganen kunstledermaterials Active EP4033027B1 (de)

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Application Number Priority Date Filing Date Title
RS20231257A RS65042B1 (sr) 2020-12-22 2021-12-20 Postupak za proizvodnju bio-zasnovanog i veganskog materijala sintetičke kože

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IT102020000031787A IT202000031787A1 (it) 2020-12-22 2020-12-22 Processo per la produzione di un materiale similpelle bio-based e vegan

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EP4033027A1 EP4033027A1 (de) 2022-07-27
EP4033027B1 true EP4033027B1 (de) 2023-10-04
EP4033027C0 EP4033027C0 (de) 2023-10-04

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EP (1) EP4033027B1 (de)
ES (1) ES2967297T3 (de)
HU (1) HUE064815T2 (de)
IT (1) IT202000031787A1 (de)
MA (1) MA58260B1 (de)
PL (1) PL4033027T3 (de)
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Publication number Priority date Publication date Assignee Title
JPS59150133A (ja) * 1983-02-10 1984-08-28 東レ株式会社 皮革状ヤ−ン
KR102406170B1 (ko) * 2017-05-18 2022-06-07 현대자동차주식회사 자동차 내장재용 친환경 인조피혁 및 그 제조방법

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EP4033027A1 (de) 2022-07-27
ES2967297T3 (es) 2024-04-29
CN114717855A (zh) 2022-07-08
HUE064815T2 (hu) 2024-04-28
PL4033027T3 (pl) 2024-03-11
IT202000031787A1 (it) 2022-06-22
RS65042B1 (sr) 2024-02-29
EP4033027C0 (de) 2023-10-04

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