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EP0849365B1 - Agent pour la préparation du cuir - Google Patents

Agent pour la préparation du cuir Download PDF

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Publication number
EP0849365B1
EP0849365B1 EP97810974A EP97810974A EP0849365B1 EP 0849365 B1 EP0849365 B1 EP 0849365B1 EP 97810974 A EP97810974 A EP 97810974A EP 97810974 A EP97810974 A EP 97810974A EP 0849365 B1 EP0849365 B1 EP 0849365B1
Authority
EP
European Patent Office
Prior art keywords
agent
composition according
weight
retanning
fatliquoring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97810974A
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German (de)
English (en)
Other versions
EP0849365A1 (fr
Inventor
Reiner Komforth
Alain Lauton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TFL Ledertechnik GmbH and Co KG
Original Assignee
TFL Ledertechnik GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE1996153549 external-priority patent/DE19653549A1/de
Priority claimed from DE1997146445 external-priority patent/DE19746445A1/de
Application filed by TFL Ledertechnik GmbH and Co KG filed Critical TFL Ledertechnik GmbH and Co KG
Publication of EP0849365A1 publication Critical patent/EP0849365A1/fr
Application granted granted Critical
Publication of EP0849365B1 publication Critical patent/EP0849365B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00—Tanning; Compositions for tanning
    • C14C3/02—Chemical tanning
    • C14C3/28—Multi-step processes
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00—Tanning; Compositions for tanning
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
    • C14C9/02—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes using fatty or oily materials, e.g. fat liquoring

Definitions

  • the present invention relates to new agents for simultaneous retanning and oiling of pre-tanned leather or furs, processes for making these agents and the Use of these agents for the production of leather or furs.
  • the pre-tanned hides are usually neutralized, then retanned, greased and, if necessary, subsequently colored and even further equipped.
  • the operations that start with neutralization are often in separate baths or carried out in succession in a bath, but can also in a bath take place at the same time.
  • the products used are usually individually in solid or liquid form used because it is difficult to mix homogeneous manufacture.
  • the fatliquors are almost exclusively liquid or at least wax-like and can be mixed with the solid components, e.g. the neutralizing agents and retanning agents, do not process into mixtures according to previously known methods, in which for a sufficiently long time and also at different temperatures a homogeneous distribution of the components and sufficient storage stability are guaranteed.
  • the agents according to the invention when used, synergistic effect. You can namely the amount of retanning and Significantly reduce fatliquoring compared to a method in which this Chemicals are used individually, although the usual retanning and greasing agents be used. In particular, the fat emulsification when using the Improved agents according to the invention and one arrives with smaller amounts Fatty substances.
  • the agents according to the invention are excellent Storage stability and are frost-resistant, if it is solid agents.
  • the transport and Storage effort compared to the use of special funds for each individual Treatment step can be significantly reduced and handling becomes significant simplified. They also save up to 60% water and time facilitate the reproducibility of the quality of the leather obtained. Furthermore, through the use of the agents according to the invention the penetration and distribution of the Chemicals in the leather are accelerated and / or improved. This leads e.g. to a better coloring of the leather. In addition, other important properties of the Leather, such as behavior towards water, fogging behavior, adhesive strength of dressing films, stretch and strength properties as well as the mass per unit area beneficially influenced.
  • the agents according to the invention are preferably in such a form that they are usual stirring in water from 10 to 60 ° C are homogeneously distributable to form Suspensions or dispersions that are stable for the duration of the leather treatment.
  • usual stirring in here is simple stirring using in Leather stirrers used to understand.
  • the agents according to the invention are preferably in such a form that they the addition to water form micelles containing retanning agents and fatliquoring agents.
  • the particles preferably 50% of the particles have one. Size under 15 ⁇ m.
  • agents according to the invention which are particularly preferred are: the addition to water form micelles in which 90% of the particles have a size below 40 ⁇ m.
  • the agents according to the invention are suitable for the treatment of for wet dressing prepared so-called semi-finished product, i.e. pre-tanned leather, e.g. Wetblue and Wetwhite.
  • the retanning agents can be of natural or synthetic origin. In consideration for example, come the connections commonly used today, for example vegetable tannins, aromatic syntans, resin tannins, Reactive tanning agents, mineral and polymeric tanning agents.
  • Suitable vegetable tannins are e.g. Tannins made from mimosa, quebracho, oak, Chestnut or spruce bark can be obtained. Vegetable are particularly suitable Tannins that contain pyrogallol or pyrocatechin (pyrocatechol).
  • Aromatic syntane e.g. consider such connections through Condensation of sulfonated aromatic compounds alone or together with further, mostly unsulfonated aromatic compounds with formaldehyde and / or Urea are available.
  • Aromatic compounds suitable for this are, for example: naphthalene, diphenyl, terphenyl, Phenols, cresols, 4,4'-dihydroxidiphenyl sulfone, ⁇ -naphthol, dihydroxybenzenes, resorcinol, 2,2'-bis (hydroxyphenyl) propane and diaryl ethers such as diphenyl ether and ditolyl ether which optionally sulfonated in a manner known per se.
  • condensation products are in the form of the free acids, preferably in the form of the Sulfonic acids, or as salts, especially ammonium, lithium, potassium or in particular Sodium salts.
  • condensation products are known, for example from Ullmann's Encyclopedia of Industrial Chemistry Vol. 16, (4), 138 to 140 (1979) or can be prepared by the processes described in the references given there.
  • Resin tanning agents e.g. the cationic condensation products containing nitrogen organic compounds, e.g. Urea, thiourea, dicyandiamide or melamine, with formaldehyde or other simple oxo compounds.
  • nitrogen organic compounds e.g. Urea, thiourea, dicyandiamide or melamine
  • Suitable resin tanning agents are the anionic compounds that are obtained if one condenses products of nitrogenous organic compounds, e.g. Urea, thiourea, dicyandiamide or melamine, with formaldehyde or others simple oxo compounds and anionic compounds such as e.g. phenols, Alkali salts of aromatic sulfonic acids, sulfonamides, lignin sulfonates, sulfite or Hydrogen sulfite condenses.
  • nitrogenous organic compounds e.g. Urea, thiourea, dicyandiamide or melamine
  • formaldehyde or others simple oxo compounds such as e.g. phenols, Alkali salts of aromatic sulfonic acids, sulfonamides, lignin sulfonates, sulfite or Hydrogen sulfite condenses.
  • Particularly preferred resin tanning agents are the condensation products of urea Formaldehyde and dicyandiamide-based resin tanning agents.
  • Suitable reactive tanning agents are e.g. Mono-, di- and polyaldehydes, in particular Glutaraldehyde, multifunctional isocyanates, alkyl sulfochlorides, higher molecular weight Alkyl sulfonates and monomeric vinyl and acrylic derivatives and their polymers.
  • chromium, aluminum, iron or come as mineral retanning agents Zirconium salts for example chromium (III) chloride or sulfate, chromium alum, optionally basic aluminum chloride or sulfate, iron (III) chloride or sulfate, Zirconium oxychloride and zirconium sulfate.
  • the polymeric retanning agents are e.g. polyacrylates, copolymers, containing acrylates, polyurethanes or polybutadienes.
  • Vegetable tanning agents are preferably used as tanning agents in the agents according to the invention, aromatic syntans or reactive tanning agents used.
  • These fatliquoring agents are preferably by sulfation, sulfitation or formation of Modified sulfonic acids so that they are soluble or emulsifiable in water.
  • lubricants are preferably used as aqueous solutions or emulsions used.
  • the agents for producing leather according to the invention can each have a single agent Contain neutralizers, a retanning agent and a fatliquor, but they can also contain mixtures of two and more of these components. This is even normally the case because these connections are rarely Pure substances, but technical mixtures of numerous, more or less similar connections.
  • Leather treatment agents contain further additives, e.g. Neutralizing agents, carriers, Dyes, impregnating agents, dressing agents and dressing aids.
  • Suitable neutralizing agents for the inventive Agents are, for example, alkali salts of weak inorganic or organic Acids, aromatic sulfonic acids or aliphatic mono- or dicarboxylic acids. It is preferably sodium or potassium bicarbonate, formate or acetate, around oxalic acid, malonic acid, adipic acid or condensed sulfonated phenols. Sodium bicarbonate, sodium formate, acetic acid, adipic acid or are particularly suitable sulfonated diphenyl sulfones.
  • Suitable carriers are e.g. Sodium chloride, Glauber's salt, sodium formate, protein powder, Starch, kaolin, polysaccharides, glucose or gelatin.
  • Suitable dyes are the leather dyes usually used, for example natural dyes, also synthetic dyes, such as e.g. anionic Dyes, metal complex dyes, direct dyes, cationic dyes or Sulfur dyes. Pigments are also included among dyes, i.e. largely in water to understand insoluble dyes.
  • the impregnating agents are also those in the leather industry known means used, e.g. to means of protection against water, organic Solvents or oils or against dirt, means to improve the Resistance to abrasion, abrasion or other mechanical injuries, Means for improving the temperature resistance or light fastness and Flammability reduction or anti-static.
  • Suitable dressing agents are e.g. Primers such as polyacrylates, butadiene copolymers or polyurethanes, or finishing agents, such as casein, nitrocellulose or Polyurethane formulations.
  • preparation aids come the well-known and used in practice into question, for example penetrators, primers and fillers, anti-adhesive agents, Thickening and stabilizing agents, plasticizers, matting agents, grip agents and Fixative.
  • agents according to the invention are also possible in the form of solutions, dispersions or emulsions in a suitable solvent, preferably in water, use.
  • the percentages relate to the total weight of the funds Leather treatment.
  • the agents according to the invention are produced in a manner known per se and Way, for example by adding a retanning agent, a fatliquor and if necessary, other additives are mixed undiluted.
  • a retanning agent and fatliquor and any further ones that may be present Select additives so that the agents obtained when added to the minimum 8 times the amount of water at 10 to 60 ° C give homogeneous mixtures.
  • retanning agents are preferably used Additions as solutions or suspensions or dispersions, mixes them and then dries.
  • water preferably serves as Solvents, but there are also organic solvents, for example one or polyhydric alcohols or hydrocarbons.
  • Drying is done in the usual way, but should normally be done under conditions be carried out in which the homogeneous distribution of the constituents of the mixtures preserved. If all components are readily soluble in water or easily emulsifiable or are dispersible, the type of drying does not matter.
  • It is preferably dried by spray drying at about 80 to 140 ° C, especially at 100 to 120 ° C.
  • a first Carrier material for example sodium chloride, Glauber's salt, sodium formate, protein powder or starch to spray and dry at the same time or subsequently.
  • the agents according to the invention are obtained in the form of powder or Granules in this form for the preparation of aqueous liquors for leather production can be used.
  • the funds are not dusting, can be easily homogenized in Distribute water and remain free-flowing even after long storage, even with Temperatures up to approx. 40 ° C. If you don't have a carrier material or as such a non-salt one Used compound, the agents according to the invention can be salt-free or produce low in salt, which during further processing, e.g. with simultaneous or subsequent dyeing is often advantageous and relieves the environment.
  • the agents according to the invention are suitable for producing various types of leather, for example for full-grain, slightly or heavily retanned leather or suede from Goat, sheep, beef or pork. With these means, leather is for everyone Usable uses, such as shoe, furniture, car, clothing and Bag leather.
  • the agents according to the invention are also suitable for retanning and oiling of fur, whereby the hair is largely unaffected.
  • the leather can be produced in all machines customary for wet finishing be carried out, for example barrel, Dosamat, tanning machine or mixer.
  • the production takes place e.g. by using pre-tanned leather such as Wetblue or Wetwhite at 10 - 50 ° C in 50 - 300% water, based on the weight of the substrate, presents, then adds 5 - 30% of the agent according to the invention and this during 30 - Allows to act for 180 minutes at the stated temperature with circulation. Subsequently if necessary, 1-3% formic acid is added in two parts over 15 minutes and continue treatment for 40-60 minutes. Then let the fleet run off, rinses with 100 - 300% water for 5 - 10 minutes, drains the washing solution and completes in the usual way.
  • pre-tanned leather such as Wetblue or Wetwhite at 10 - 50 ° C in 50 - 300% water, based on the weight of the substrate, presents, then adds 5 - 30% of the agent according to the invention and this during 30 - Allows to act for 180 minutes at the stated temperature with circulation. Subsequently if necessary, 1-3% formic acid is added in two parts over
  • Example 1 The following components are mixed at room temperature to form a homogeneous mixture:
  • a neutralizing agent approximately 12.5 Parts of a neutralizing agent (approx. 35% aqueous solution of a mixture of aromatic sulfonic acids with aliphatic dicarboxylic acids), 12.5 Parts of a penetration aid (approx. 50% aqueous solution of a condensation product of aromatic sulfonic acids), 10.0 Parts of a retanning agent (approx. 50% aqueous solution of a mixture of a vegetable tanning agent and a tanning condensation product of aromatic sulfones), 15.0 Parts of a retanning agent (approx. 55% aqueous solution of a condensation product of phenolsulfonic acid and aromatic hydroxysulfones), 47.5 Parts of a fatliquor (approx. 50% aqueous solution of a fatliquor based on sulfited natural and synthetic fats) and 2.5 Parts of a stabilizer for the fatliquor (sulfated fatty alcohol).
  • This mixture is spray dried at normal pressure and 110 ° C. You get a powder which is suitable for wet dressing wetblue and wetwhite, especially for Manufacture of furniture and car upholstery leather and shoe leather.
  • Example 2 The following components are mixed at room temperature to form a homogeneous mixture:
  • a neutralizing agent approximately 12.5 Parts of a neutralizing agent (approx. 35% aqueous solution of a mixture of aromatic sulfonic acids with aliphatic dicarboxylic acids), 12.5 Parts of a penetration aid (approx. 50% aqueous solution of a condensation product of aromatic sulfonic acids), 10.0 Parts of a retanning agent (approx. 30% aqueous solution of an acrylate copolymer), 15.0 Parts of a retanning agent (approx. 55% aqueous solution of a condensation product of aromatic hydroxysulfones and sulfonic acids), 47.5 Parts of a fatliquor (approx. 50% aqueous solution of a fatliquor based on sulfited natural and synthetic fats) and 2.5 Parts of a stabilizer for the fatliquor (sulfated fatty alcohol).
  • This mixture is spray dried at normal pressure and 110 ° C. You get a powder which is suitable for wet dressing wetblue and wetwhite, especially for Manufacture of furniture and car upholstery leather and shoe leather.
  • Example 3 The following components are mixed at room temperature to form a homogeneous mixture:
  • a retanning agent approximately 50% aqueous solution of a condensation product of sulfones and sulfonic acids of cyclic compounds
  • 20.0 Parts of a retanning agent approximately 50% aqueous solution of a mixture of a vegetable tanning agent and a tanning condensation product of aromatic sulfones
  • 20.0 Parts of a liquid melamine resin 12.0 Parts of a retanning agent (approx. 30% aqueous solution of an acrylate copolymer)
  • a fatliquor approximatelyx. 50% aqueous solution of a fatliquor based on sulfited natural and synthetic fats.
  • This mixture is spray dried at normal pressure and 110 ° C. You get a powder which is suitable for wet dressing wetblue and wetwhite, especially for Manufacture of upper leather.
  • the leather obtained is significantly softer than leather produced in a conventional manner, the neutralization, retanning and oiling in each case individually be carried out one after the other. It also has better tear resistance and lower fogging values at lower manufacturing costs.
  • Example 5 The following components are mixed at room temperature to form a homogeneous mixture:
  • a neutralizing agent approximately 35% aqueous solution of a mixture of aromatic sulfonic acids with aliphatic dicarboxylic acids
  • a penetration aid approximately 50% aqueous solution of a condensation product of aromatic sulfonic acids
  • 10.0 Parts of a retanning agent approximately 50% aqueous solution of a mixture of a vegetable tanning agent and a tanning condensation product of aromatic sulfones
  • 15.0 Parts of a retanning agent approximately 47.5 Parts of a fatliquor (approx.
  • aqueous solution of a fatliquor based on sulfited natural and synthetic fats 50% aqueous solution of a fatliquor based on sulfited natural and synthetic fats), 2.5 Parts of a stabilizer for the fatliquor (sulfated fatty alcohol), 32.0 Portions of an aqueous dye formulation containing 40% by weight of the black dye C.I. Acid Black 210 and 4.0 Parts of an aqueous dye formulation containing about 50% by weight of carbon black.
  • This mixture is spray dried at normal pressure and 110 ° C.
  • Example 4 Works as described in example 4, but uses instead of the agent according to Example 1 20% of the mixture described above, so no matter black dyed leather, which shows a significantly better coloring than on conventional Leather made wisely, in the manufacture of which neutralization, retanning, Greasing and coloring are carried out one after the other.
  • Example 6 The following components are mixed at room temperature to form a homogeneous mixture:
  • a vegetable tannin 15.0 Parts of a retanning agent (approx. 50% aqueous solution of a tanning condensation product of aromatic sulfones), 5.5 Parts of a retanning agent (approx. 40% aqueous solution of an acrylate copolymer), 26.5 Parts of a neutralizing agent (approx. 50% aqueous solution of a mixture of aromatic sulfonic acids with aliphatic dicarboxylic acids), 5.5 Parts of a penetration aid (approx. 40% aqueous solution of a condensation product of aromatic sulfonic acids), 30.5 Parts of a fatliquor (approx. 50% aqueous solution of a fatliquor based on sulfited natural and synthetic fats), 13.0 Parts of a carrier (Glauber's salt).
  • a retanning agent approximately 50% aqueous solution of a tanning condensation product of aromatic sulfones
  • This mixture is spray dried at normal pressure and 110 ° C. You get a powder which is suitable for wet dressing of wetblue and wet white, especially for Manufacture of upper leather.
  • a piece of Wetblue (beef) 1.9 mm folded in a barrel in 30% water at 30 ° is added, and 15% of the agent according to Example 6 is added and treated at 30 ° for 30 minutes. Then add 3% of the black powder dye CIAcid Black 210 and treat for 90 minutes at 30 °.
  • the leather obtained is significantly softer than leather produced in a conventional manner, the neutralization, retanning and oiling in each case individually be carried out one after the other.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Medicinal Preparation (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Claims (27)

  1. Produits pour la préparation de cuir ou de fourrures, caractérisé en ce qu'ils contiennent
    a) de 10 à 80 % en masse d'un produit de retannage,
    b) de 5 à 50 % en masse d'une nourriture et
    c) de 0 à 55 % en masse d'autres additifs, et
    les produits sont répartissables de façon homogène dans une quantité au moins 8 fois d'eau d'une température de 10 à 60°C.
  2. Produits selon la revendication 1, caractérisés en ce qu'ils sont répartissables de façon homogène par mélange usuel dans l'eau à une température de 10 à 60°C.
  3. Produits selon l'une des revendications 1 ou 2, caractérisés en ce qu'ils forment des micelles par ajout d'eau, renfermant des produits de retannage et la nourriture.
  4. Produits selon l'une des revendications 1 à 3, caractérisés en ce qu'ils forment par délayage une dispersion ou une suspension dans laquelle 50 % des particules possèdent une granulométrie inférieure à 15 µm.
  5. Produits selon l'une des revendications 1 à 3, caractérisés en ce qu'ils forment par délayage une dispersion ou une suspension dans laquelle 90 % des particules possèdent une granulométrie inférieure à 40 µm.
  6. Produits selon l'une des revendications 1 à 5, caractérisés en ce qu'ils sont solides à une température inférieure à 40°C.
  7. Produits selon l'une des revendications 1 à 6, caractérisés en ce qu'ils contiennent en tant qu'autre additif un agent de neutralisation.
  8. Produits selon la revendication 7, caractérisés en ce qu'ils contiennent en tant qu'agent de neutralisation des sels alcalins d'acides inorganiques ou organiques faibles, d'acides sulfoniques aromatiques ou d'acides mono- ou dicarboxyliques aliphatiques.
  9. Produits selon la revendication 8, caractérisés en ce qu'ils contiennent en tant qu'agent de neutralisation l'acétate, le formiate ou le bicarbonate de sodium ou de potassium, l'acide oxalique, l'acide malonique, l'acide adipique ou un phénol sulfoné condensé.
  10. Produits selon la revendication 9, caractérisés en ce qu'ils contiennent en tant qu'agent de neutralisation le bicarbonate de sodium, le formiate de sodium, l'acide acétique, l'acide adipique ou une diphénylsulfone sulfonée.
  11. Produits selon l'une des revendications 1 à 10, caractérisés en ce qu'ils contiennent en tant que produit de retannage un produit de tannage végétal, un syntane aromatique, un produit de tannage résineux, ou un produit de tannage réactif ou un produit de tannage minéral ou polymère.
  12. Produits selon la revendication 11, caractérisés en ce qu'ils contiennent en tant que produit de retannage un produit de tannage végétal, un syntane aromatique ou produit de tannage réactif.
  13. Produits selon l'une des revendications 1 à 12, caractérisés en ce qu'ils contiennent en tant que nourriture
    a) une nourriture à base de graisses animales,
    b) une nourriture à base de graisses végétales,
    c) une nourriture synthétique ou
    d) une huile minérale.
  14. Produits selon la revendication 13, caractérisés en ce qu'on utilise une nourriture qui est modifiée par sulfatation, sulfitation ou formation d'acides sulfoniques, de sorte qu'elle soit soluble ou émulsionnable ou dans l'eau.
  15. Produits selon l'une des revendications 1 à 14, caractérisés en ce qu'ils contiennent en tant qu'un autre additif un véhicule, un colorant, un agent d'imprégnation, un produit de finissage ou un adjuvant de finissage.
  16. Produits selon la revendication 15, caractérisés en ce qu'ils contiennent en tant que véhicule le chlorure de sodium, le sel de Glauber, le formiate de sodium, la poudre de protéines ou l'amidon.
  17. Produits selon l'une des revendications 1 à 16, caractérisés en ce qu'ils contiennent en tant qu'autre additif un colorant.
  18. Produits selon la revendication 17, caractérisés en ce qu'ils contiennent en tant que colorant un colorant naturel, un colorant synthétique anionique ou à complexe métallique, un colorant direct ou au soufre ou un pigment.
  19. Produits selon l'une des revendications 1 à 18, renfermant
    a) de 10 à 60 % en masse d'un produit de retannage,
    b) de 10 à 45 % en masse d'un produit de nourriture,
    c) de 10 à 40 % en masse d'un agent neutralisant et
    d) de 0 à 40 % en masse d'autres additifs.
  20. Produits solides selon la revendication 19, renfermant
    a) de 20 à 60 % en masse d'un produit de retannage,
    b) de 10 à 40 % en masse d'un produit de nourriture,
    c) de 10 à 25 % en masse d'un agent neutralisant et
    d) de 2 à 35 % en masse d'autres additifs.
  21. Procédé pour la préparation de produits selon l'une des revendications 1 à 20, caractérisés en ce qu'on mélange sans dilution un produit de retannage, une nourriture et éventuellement d'autres additifs.
  22. Procédé pour la préparation des produits solides selon l'une des revendications 1 à 20, caractérisé en ce qu'on utilise un produit de retannage, une nourriture et éventuellement d'autres additifs sous forme de solutions ou suspensions, respectivement dispersions, on les mélange et ensuite on sèche.
  23. Procédé selon la revendication 22, caractérisé en ce qu'on soumet la solution, la suspension ou la dispersion, après mélange, à un traitement aux ultrasons.
  24. Procédé selon l'une des revendications 22 ou 23, caractérisé en ce qu'on met en oeuvre le procédé de séchage de façon telle que l'on sèche la solution, la suspension ou la dispersion sans ségrégation.
  25. Procédé selon l'une des revendications 22 à 24, caractérisé en ce qu'on met en oeuvre le procédé de séchage par séchage par pulvérisation.
  26. Procédé pour la préparation de cuir ou de fourrures, caractérisé en ce qu'on traite le cuir ou les fourrures prétannés dans un bain aqueux avec un agent selon l'une des revendications 1 à 20.
  27. Procédé selon la revendication 26, caractérisé en ce qu'on traite le cuir ou les fourrures prétannés dans un bain aqueux, qui contient des micelles, renfermant un produit de retannage et une nourriture.
EP97810974A 1996-12-20 1997-12-11 Agent pour la préparation du cuir Expired - Lifetime EP0849365B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE1996153549 DE19653549A1 (de) 1996-12-20 1996-12-20 Mittel zur Herstellung von Leder
DE19653549 1996-12-20
DE1997146445 DE19746445A1 (de) 1997-10-21 1997-10-21 Mittel zur Herstellung von Leder
DE19746445 1997-10-21

Publications (2)

Publication Number Publication Date
EP0849365A1 EP0849365A1 (fr) 1998-06-24
EP0849365B1 true EP0849365B1 (fr) 2003-08-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97810974A Expired - Lifetime EP0849365B1 (fr) 1996-12-20 1997-12-11 Agent pour la préparation du cuir

Country Status (11)

Country Link
US (1) US6033590A (fr)
EP (1) EP0849365B1 (fr)
JP (1) JPH10195500A (fr)
KR (1) KR19980064329A (fr)
AR (1) AR010810A1 (fr)
AT (1) ATE247719T1 (fr)
AU (1) AU733894B2 (fr)
BR (1) BR9705614A (fr)
DE (1) DE59710609D1 (fr)
PL (1) PL323618A1 (fr)
TR (1) TR199701669A1 (fr)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19917736A1 (de) * 1999-04-20 2000-10-26 Zschimmer & Schwarz Gmbh & Co Mittel zur Ausrüstung von Leder
DE10105345A1 (de) * 2000-07-14 2002-01-24 Arconia Gmbh Chur Tierhaarprodukt und Verfahren zur Bearbeitung, insbesondere Reinigung von Tierhaarprodukten
EP1517999A1 (fr) * 2002-06-28 2005-03-30 TFL Ledertechnik GmbH Procede et auxiliaires de traitement de cuir tanne de maniere organique
DE10237259A1 (de) * 2002-08-14 2004-02-26 Basf Ag Formulierung für den Einsatz in der Chromfrei- oder Chromgerbung
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AU733894B2 (en) 2001-05-31
US6033590A (en) 2000-03-07
MX9710304A (es) 1998-08-30
EP0849365A1 (fr) 1998-06-24
BR9705614A (pt) 1999-03-09
DE59710609D1 (de) 2003-09-25
PL323618A1 (en) 1998-06-22
AU4851397A (en) 1998-06-25
JPH10195500A (ja) 1998-07-28
KR19980064329A (ko) 1998-10-07
AR010810A1 (es) 2000-07-12
TR199701669A1 (xx) 2001-10-22

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