EP3216916A1 - Procede d'amelioration du cuir - Google Patents

Procede d'amelioration du cuir Download PDF

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Publication number
EP3216916A1
EP3216916A1 EP16159622.6A EP16159622A EP3216916A1 EP 3216916 A1 EP3216916 A1 EP 3216916A1 EP 16159622 A EP16159622 A EP 16159622A EP 3216916 A1 EP3216916 A1 EP 3216916A1
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EP
European Patent Office
Prior art keywords
coat
solution
minutes
water
leather
Prior art date
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Granted
Application number
EP16159622.6A
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German (de)
English (en)
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EP3216916B1 (fr
Inventor
Uwe Holubeck
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Holupelli Consult GmbH
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Holupelli Consult GmbH
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Priority to DK16159622.6T priority Critical patent/DK3216916T3/en
Priority to EP16159622.6A priority patent/EP3216916B1/fr
Priority to ES16159622T priority patent/ES2702480T3/es
Priority to PL16159622T priority patent/PL3216916T3/pl
Priority to PCT/EP2017/055503 priority patent/WO2017153505A1/fr
Priority to CN201780015861.9A priority patent/CN109072546A/zh
Publication of EP3216916A1 publication Critical patent/EP3216916A1/fr
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Publication of EP3216916B1 publication Critical patent/EP3216916B1/fr
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    • 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
    • C14C3/08—Chemical tanning by organic agents
    • C14C3/22—Chemical tanning by organic agents using polymerisation products
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/44—Mechanical treatment of leather surfaces
    • C14B1/54—Ironing
    • 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
    • C14C11/00—Surface finishing of leather
    • C14C11/003—Surface finishing of leather using macromolecular compounds
    • 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
    • C14C11/00—Surface finishing of leather
    • C14C11/003—Surface finishing of leather using macromolecular compounds
    • C14C11/006—Surface finishing of leather using macromolecular compounds using polymeric products of isocyanates (or isothiocyanates) with compounds having active hydrogen
    • 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
    • C14C13/00—Manufacture of special kinds or leather, e.g. vellum
    • 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
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
    • D06P1/5207—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • D06P1/525—Polymers of unsaturated carboxylic acids or functional derivatives thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
    • D06P1/5264—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
    • D06P1/5285—Polyurethanes; Polyurea; Polyguanides
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/02—Material containing basic nitrogen
    • D06P3/04—Material containing basic nitrogen containing amide groups
    • D06P3/32—Material containing basic nitrogen containing amide groups leather skins
    • D06P3/3293—Material containing basic nitrogen containing amide groups leather skins mineral dyeing

Definitions

  • the invention relates to measures for the treatment and refinement of leather.
  • a process for the production of leather shrinkage comprising the following steps: a) washing at least one chromium-tanned coat (Chromwetblue) in a washing solution, b) neutralizing the treated coat in a neutralization solution, c) pre-lubricating the coat, d F) dyeing the coat in a dyeing solution, e) fatliquoring by addition of a fatliquoring mixture, f) fixation by addition of formic acid, g) final clay adjustment, h) fixation, i) washing of the coat, j) drying of the coat, k) application of a coat Binder mixture solution, l) application of an aqueous emulsion varnish, m) ironing and cleats of the coat, n) stroking of the coat with continuous supply of moisture, o) dehairing of the coat, p) conditioning of the coat and further reduction of the moisture content and q
  • tannins can be pasted to further increase the astringent with HCOOH formic acid to enhance the effect of shrinkage.
  • glutaraldehyde which is not made more astringent with acid, but where the nakedness must be set alkaline to experience intense shrinkage.
  • concentrations in percent by weight relate to the shaved weight of the coat to be treated.
  • the term "about” is to be understood as meaning that the concentrations can deviate from the stated value by +/- 15%, preferably +/- 10% or preferably +/- 5%. However, particularly preferably, the concentrations correspond exactly to the values mentioned. This interpretation applies accordingly to quantities, times or temperatures.
  • Chromwetblue also a plurality of leathers, i. to understand two, three or more Chromwetblues, which are treated by the method according to the invention.
  • steps of the moist treatment ie steps a) to i) are preferably carried out in mobile vessels and preferably in rotatable vessels. Particularly preferred for this wood barrels are suitable.
  • the skins can be left in the same vessel for carrying out the individual process steps or transferred to a different vessel in each case.
  • the drying steps used in the process can be carried out using vacuum drying techniques, hanging drying or drying tunnels. Walk and stretch treatments are preferably carried out by means of rolling machines.
  • step k) and fixation solution in step q) is preferably carried out by means of a rotary sprayer.
  • step k) the application is carried out 2 to 3 times, wherein the binder mixture solution is applied in an amount of about 10-15 g per square foot. Subsequently, a filming by means of continuous dry tunnel at about 80 ° preferably takes place. The steps are preferably repeated 3 times.
  • step q it is preferable to apply the fixing solution in an amount of 10 mg per square foot.
  • Ironing steps are preferably carried out by means of a continuous ironing machine at about 80 ° C.
  • the tunnel is preferably carried out with a continuous roller machine.
  • nonionic surfactant refers to a surfactant which contains no dissociable functional groups and does not separate into ions in aqueous solution.
  • Nonionic surfactants generally consist of a non-polar and a polar part.
  • the nonpolar part is usually a fatty alcohol (preferred chain length between C12 and C18) or octyl- or nonylphenols.
  • polar groups may serve a hydroxy group or an ether group, which are contained, for example, in polyethylene glycol or monosaccharides.
  • a “nonionic surfactant” in the context of the invention is particularly preferably a polyalkylene glycol ether (fatty alcohol ethoxylates (FAEO), fatty alcohol propoxylates (FAPO), alkyl glucosides, alkyl polyglucosides (APG), octylphenol ethoxylates or nonylphenol ethoxylates.
  • FEO fatty alcohol ethoxylates
  • FPO fatty alcohol propoxylates
  • alkyl glucosides alkyl polyglucosides
  • APG alkyl polyglucosides
  • octylphenol ethoxylates or nonylphenol ethoxylates octylphenol ethoxylates or nonylphenol ethoxylates.
  • polymer tanning agent in the context of the invention, a tanning agent is referred to, which consists of macromolecules, so-called constitutional repetitive units or repeating units.
  • Acrylates and polyurethanes for example, can be used as base bodies for tanning-active, artificially produced polymers.
  • Aldehydes, isocyanates, isothiocyanates and succinimide esters can be used as reactive groups.
  • a polymer tanning agent in the context of the invention preferably consists of a condensate of aliphatic aldehydes and one or more compounds selected from the group consisting of urea, dicyandiamide, melamine and guanidine, particularly preferably a condensation product of dicyandiamide and formaldehyde.
  • Retanning is the post-treatment of pre-tanned, often chrome-tanned leather.
  • the retanning preferably serves to emphasize special features of the type of leather, for example the optimization of color, grain fineness, grain firmness, softness, fullness, shape retention, weight of the leather, behavior against water (hydrophobicity) or the fixation of tannins.
  • Suitable retanning agents may be synthetic or natural substances, for example mineral tanning agents such as chromium, aluminum or zirconium, synthetic retanning agents such as naphthalene-phenol condensates, fats or aldehydes.
  • a "retanning agent" within the meaning of the invention is preferably a synthetic retanning agent, for example a naphthalene-phenol condensation product.
  • anionic dyes also called acid dyes
  • dyes are called having one or more acid residues, usually sulfonic acid residues, and raise from aqueous medium directly onto the fiber.
  • Anionic dyes are preferably used for dyeing polyamide fibers and wool on which they undergo electrovalent bonds with the amino group.
  • Anionic dyes typically have azo, nitro or anthraquinone chromophores.
  • Representative of the anionic dyes are, for example, naphthol yellow S and the patent blue dyes.
  • An "anionic dye” within the meaning of the invention is preferably an anionic dye of the acidic substantive dye type, more preferably Congo red or benzopurpurin.
  • a "finely divided polyurethane dispersion” is preferably a free-flowing two-phase system consisting of water and a polymer, ie a dispersed plastic which belongs to the class of polyurethanes, for example isocyanates, polyols and polyamines, and optionally further components.
  • the polyurethane particles are typically present in a stable dispersion and are spherical formations in a size range between about 30 nm and 1000 nm, thereby providing a milky white appearance of the dispersion.
  • the size distribution can have both a maximum (monomodal) and two maxima (bimodal). Below 50 nm particle size, the dispersion appears increasingly transparent, above 1000 nm, the particles tend to settle.
  • the proportion by weight of the polyurethane solid in the dispersion is usually between 30% to 60%.
  • the so-called LD value light transmission value of the dispersion
  • the LD value is preferably measured by measuring the dispersion in 0.01% (w / w) aqueous solution in a 2.5 cm edge length cuvette with 546 nm wavelength light and measuring the permeability of water among the compares the above conditions. The permeability of water is given as 100%. The finer the dispersion, the higher the LD value measured by the method described above.
  • Preferred finely divided dispersions are also disclosed in U.S. Patent Nos. 4,135,399 and 5,648,842 Laid-open applications EP 0 257 412 A1 .
  • WO 2010/139654 A2
  • a "modified polyurethane / acrylate copolymer emulsion" in the context of the invention is preferably an emulsion of a polyurethane-acrylate copolymer having chemical modifications.
  • acrylate copolymer when a copolymer is referred to as acrylate copolymer, this is to be understood as meaning copolymers which have been copolymerized from acrylic acid or its derivatives. Included within the term acrylate within the meaning of the invention are also acrylamides, acrylic esters such as acrylic acetates, etc., but also copolymers in which the acrylate is the predominantly present polymer.
  • copolymers are copolymers derived from acrylic acid or methacrylic acid and derivatives thereof, such as amides and esters, in particular acrylic acid, acrylamides and acrylic esters. They may optionally contain basic comonomers, such as primary, secondary, tertiary or quaternary amino substituents, e.g.
  • Quaternization products of dimethylaminoethylmethacrylate or diallyldimethylammonium acrylic acid moieties ; hydrophobic substituents, such as long-chain alkyl groups having 10 to 30, preferably 12 to 24 carbon atoms, acidic substituents, such as sulfonate, phosphate and carboxyl groups or hydroxyl groups, such as vinyl alcohol.
  • Copolymers of vinylpyrrolidone / acrylate or dialkylaminoalkyl methacrylate are also suitable.
  • Polyurethanes also include polyurethane polyvinyl pyrrolidones, polyester polyurethanes, polyether polyurethanes and polyureas.
  • the polyurethane may be, for example, an aliphatic, cycloaliphatic or aromatic polyurethane, polyurea / urethane or polyurea copolymer.
  • Polyurethanes may also be prepared from straight or branched polyesters or alkyd compounds that have mobile hydrogen.
  • Chromwetblue tanned intermediate with a chromium oxide content of at least 1.5%) is used here.
  • Chromium tanning to produce chromium blues typically employs chromium (III) salts (chromium hydroxide). Corresponding methods are known in the art.
  • the dyeing is achieved at 50% water 20 ° C with 1.0% ammonia and anionic dyes, preferably acid-substantive dyes over 60 minutes at about 12 U / min and 60 ° in the same medium with the addition of 100% water C and 4.5% fat mixture of long-chain paraffins about 45% active ingredient content and sulfited oils about 55% active ingredient content in a ratio of 1: 1 greased for 40 minutes and by adding 3.5% formic acid 85% over 60 minutes fixed.
  • the final tone adjustment of the color is carried out in a fresh bath with 200% water at 50 ° C and an addition of anionic dyes of the acidic noun type during 60 minutes and is fixed by the addition of 0.5-1.0% formic acid 85% over 20 minutes and completed.
  • the final pH is between 3.5 and 3.6.
  • the drying is initiated by an intensive wilting and stretching by means of commercial rolling machines. There is a predrying using vacuum technology at 60 ° C for 3 minutes and drying in a drying tunnel for 8 hours at 50 ° C. By intensively rewetting the leather matrix to> 50% water content, reconditioning of the fiber is achieved. This is followed by re-drying of the leather matrix to less than 15% water content by means of vacuum technology at 60 ° C. for 1-2 minutes and hanging drying for at least 8 hours at 40 ° C.
  • the intensive softening of the fiber is carried out by means of a commercial continuous roller machine with pen tools and is preparatory operation for the surface coating (dressing).
  • the finish consists of a mixture of finely divided polymers about 40% active ingredient content and finely divided polyurethane dispersions about 30% active ingredient content (modified polyurethane / acrylate copolymer emulsion), which receive their color by the addition of inorganic pigment dispersions.
  • 400 parts of binder mixture are mixed with 100 parts of inorganic pigments and 350 to 400 parts of water.
  • the binder mixture is applied 2-3 times (10 to 15 g / square foot of leather) by means of a commercially available rotary sprayer on the leather surface and then filmed with a continuous ironing machine with 80 ° C. This operation is repeated 3 times.
  • an aqueous polyurethane-based emulsion varnish with about 25% (w / w) active substance content of about 10 g / square foot of leather, the dressing film is adjusted medium hard.
  • the ironing machine is then ironed at approx. 80 ° C.
  • an intensive fiber loosening is achieved, which represents a preliminary work for the subsequent walking in the Walk barrel.
  • the working process Walken is decisive for the expression of the wholegrain grain and the resulting leather surface (shrink optics).
  • Final setting of the shrinkage scars is achieved by applying 2-isocyanate crosslinked, aqueous, finely divided polyurethene dispersions (about 30%) in a mixing ratio of 30 parts binder in 100 parts water with an application rate of at least 10 mg / square foot of leather using a commercial grade Rotary sprayer achieved.
  • the leather shrinkage has a coat thickness of 2 to 3 mm, preferably 2.3 to 2.5 mm.
  • step a) is carried out at about 40 ° C. for about 30 minutes.
  • step b) is carried out at about 40 ° C. for about 150 min and a final pH greater than pH 6.0 in the solution is achieved.
  • the incubation time for the incubation of the coat in step c) with about 0.5% (w / w) solution of a fatty acid ester about 60 minutes, with about 2% (w / w) solution of a polymer tanning agent for about 40 minutes and with the about 20% (w / w) solution of a retanning agent for 60 minutes.
  • step e) is carried out for about 40 minutes.
  • step f Preference is given to an embodiment of the process according to the invention "wherein the fixation in step f) is carried out for about 60 minutes.
  • step g) is carried out for about 60 minutes at about 50 ° C.
  • step h Preference is given to an embodiment of the process according to the invention "wherein the fixation in step h) is carried out for about 20 minutes and a final pH value between 3.5 and 3.6 in the solution is achieved.
  • step i) is carried out for about 10 minutes at about 20 ° C.
  • drying in step j) comprises a step of wiping and stretching the coat, predrying for about 3 minutes using vacuum at about 60 ° C, and for about 8 hours (h ) is dried at about 50 ° C.
  • step n) for about 2 hours and the dehumidifying in step o) for about 6 to 8 hours in a rotating vessel at 18 rpm for about 10 minutes at about 20 ° C be performed.
  • step p an embodiment of the process according to the invention is preferred "wherein the air conditioning in step p) is carried out for about 2 hours at about 40 ° C.
  • the invention also relates to a leather shrink, which is obtainable by the method according to the invention described above and preferably has a coat thickness of 2 to 3 mm, preferably 2.3 to 2.5 mm.
  • Chromwetblue (tanned intermediate with a chromium oxide content of at least 1.5%) was used.
  • the dyeing was achieved at 50% water 20 ° C with 1.5% ammonia and acid-substantive dye for 60 minutes at about 12 U / min and in the same medium with the addition of 100% water 60 ° C and 4.5 55% active ingredient content and sulfited oils approx. 55% active ingredient content in a ratio of 1: 1 over 40 minutes greased and fixed by addition of 3.5% formic acid 85% over 60 minutes.
  • the final tone adjustment of the color was done in a fresh bath with 200% water at 50 ° C and an addition of anionic dyes of the acidic noun type for 60 minutes and was fixed by the addition of 0.5-1.0% formic acid 85% over 20 minutes and completed.
  • the final pH is between 3.5 and 3.6.
  • the drying was initiated by intensive wilting and stretching by means of commercial roller machines. Pre-drying was carried out using the vacuum technique at 60 ° C. for 3 minutes and desiccation in the drying tunnel for 8 hours at 50 ° C. By intensively rewetting the leather matrix to> 50% water content, reconditioning of the fiber was achieved. This was followed by a re-drying of the leather matrix to less than 15% water content by means of Vakuumtechink at 60 ° C for 1-2 minutes and hanging drying for at least 8 hours at 40 ° C. The intensive softening of the fiber was carried out by means of a commercial continuous rolling machine with pen tools and is preparatory operation for the surface coating (dressing).
  • the finish consisted of a mixture of finely divided polymers about 40% active ingredient content and finely divided polyurethane dispersions about 30% active ingredient content (Modified polyurethane / acrylate copolymer emulsion), which their coloring by the addition of obtained inorganic pigment dispersions.
  • 400 parts of binder mixture were mixed with 100 parts of inorganic pigments and 350-400 parts of water.
  • the binder mixture is applied to the leather surface 2-3 times (10-15gr / square foot of leather) by means of a commercial rotary sprayer and then filmed with a continuous ironing machine at 80 ° C. This operation was repeated 3 times.
  • the dressing film was adjusted medium hard.
  • the ironing machine was ironed at about 80 ° C. Through a repeated tunneling by means of the continuous roller machine, an intensive fiber loosening was achieved, which represents a preparatory work for the subsequent walking in the barrel barrel.
  • the working process Walken is decisive for the expression of the wholegrain grain and the resulting leather surface (shrink optics).
  • the final fixation of the shrinkage scars was achieved by applying 2-isocyanate crosslinked, aqueous, finely divided polyurethane dispersions (about 30%) in a mixing ratio of 30 parts binder in 100 parts water with an application amount of at least 10 mg / square foot of leather by means of a commercial Rotary sprayer achieved.
  • the calfskin shrinkage thus obtained shows predominantly a homogeneous surface as in Fig. 2A shown.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
EP16159622.6A 2016-03-10 2016-03-10 Procede d'amelioration du cuir Active EP3216916B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DK16159622.6T DK3216916T3 (en) 2016-03-10 2016-03-10 PROCEDURE FOR REFINING LEATHER
EP16159622.6A EP3216916B1 (fr) 2016-03-10 2016-03-10 Procede d'amelioration du cuir
ES16159622T ES2702480T3 (es) 2016-03-10 2016-03-10 Procedimiento para el mejoramiento de cuero
PL16159622T PL3216916T3 (pl) 2016-03-10 2016-03-10 Sposób uszlachetniania skóry wyprawionej
PCT/EP2017/055503 WO2017153505A1 (fr) 2016-03-10 2017-03-09 Procédé d'ennoblissement du cuir
CN201780015861.9A CN109072546A (zh) 2016-03-10 2017-03-09 用于精制皮革的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16159622.6A EP3216916B1 (fr) 2016-03-10 2016-03-10 Procede d'amelioration du cuir

Publications (2)

Publication Number Publication Date
EP3216916A1 true EP3216916A1 (fr) 2017-09-13
EP3216916B1 EP3216916B1 (fr) 2018-09-26

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EP16159622.6A Active EP3216916B1 (fr) 2016-03-10 2016-03-10 Procede d'amelioration du cuir

Country Status (6)

Country Link
EP (1) EP3216916B1 (fr)
CN (1) CN109072546A (fr)
DK (1) DK3216916T3 (fr)
ES (1) ES2702480T3 (fr)
PL (1) PL3216916T3 (fr)
WO (1) WO2017153505A1 (fr)

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CN112725545A (zh) * 2020-12-10 2021-04-30 兴业皮革科技股份有限公司 一种仿油磨砂革的涂饰加工工艺
CN114231669B (zh) * 2021-09-28 2023-10-24 柏德皮革(中国)有限公司 一种紧实皮革坯革工艺
CN116144845A (zh) * 2022-09-08 2023-05-23 绍兴海滨皮革有限公司 高色牢度水性三防皮革及其制备工艺
CN116004930B (zh) * 2023-02-27 2024-01-05 峰安皮业股份有限公司 一种环保耐磨pu牛二层皮革的制作工艺

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE617015C (de) 1932-09-30 1935-08-10 Geigy Ag J R Verfahren zur Darstellung von gerbend wirkenden Kondensationsprodukten aus Dioxydiphenylsulfonen
DE1053517B (de) 1957-02-02 1959-03-26 Bayer Ag Verfahren zur Herstellung von Sulfogruppen enthaltenden Kondensationsprodukten aus Phenolen und Formaldehyd
DE1150488B (de) 1958-03-22 1963-06-20 Bayer Ag Verfahren zur Herstellung von Schrumpfleder
DE1257353B (de) 1965-03-26 1967-12-28 Bayer Ag Verfahren zum Gerben
DE2843233A1 (de) 1978-10-04 1980-04-10 Basf Ag Gerbstoff und dessen anwendung
EP0257412A1 (fr) 1986-08-14 1988-03-02 BASF Aktiengesellschaft Agent de collage pour papier à base de dispersions aqueuses de fines particules
EP0265657A1 (fr) 1986-09-25 1988-05-04 Hoechst Aktiengesellschaft Procédé de tannage du cuir
WO2008022936A2 (fr) * 2006-08-22 2008-02-28 Lanxess Deutschland Gmbh Cuir corroyé
WO2010139654A2 (fr) 2009-06-04 2010-12-09 Basf Se Formes galéniques se dissociant par voie orale et contenant des principes actifs à goût masqué
CN104762422A (zh) * 2015-03-17 2015-07-08 峰安皮业股份有限公司 一种植鞣缩纹头层皮的制作方法

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE617015C (de) 1932-09-30 1935-08-10 Geigy Ag J R Verfahren zur Darstellung von gerbend wirkenden Kondensationsprodukten aus Dioxydiphenylsulfonen
DE1053517B (de) 1957-02-02 1959-03-26 Bayer Ag Verfahren zur Herstellung von Sulfogruppen enthaltenden Kondensationsprodukten aus Phenolen und Formaldehyd
DE1150488B (de) 1958-03-22 1963-06-20 Bayer Ag Verfahren zur Herstellung von Schrumpfleder
DE1257353B (de) 1965-03-26 1967-12-28 Bayer Ag Verfahren zum Gerben
DE2843233A1 (de) 1978-10-04 1980-04-10 Basf Ag Gerbstoff und dessen anwendung
EP0257412A1 (fr) 1986-08-14 1988-03-02 BASF Aktiengesellschaft Agent de collage pour papier à base de dispersions aqueuses de fines particules
EP0265657A1 (fr) 1986-09-25 1988-05-04 Hoechst Aktiengesellschaft Procédé de tannage du cuir
WO2008022936A2 (fr) * 2006-08-22 2008-02-28 Lanxess Deutschland Gmbh Cuir corroyé
WO2010139654A2 (fr) 2009-06-04 2010-12-09 Basf Se Formes galéniques se dissociant par voie orale et contenant des principes actifs à goût masqué
CN104762422A (zh) * 2015-03-17 2015-07-08 峰安皮业股份有限公司 一种植鞣缩纹头层皮的制作方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Handbuch der Gerbereichemie und Lederfabrikation", 1955, SPRINGER VERLAG
DATABASE WPI Week 201613, Derwent World Patents Index; AN 2015-53174D, XP002758882 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114540557A (zh) * 2021-12-14 2022-05-27 浙江中辉裘革科技有限公司 一种羊皮仿琥珀毛革生产工艺

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DK3216916T3 (en) 2019-01-21
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WO2017153505A1 (fr) 2017-09-14
ES2702480T3 (es) 2019-03-01
PL3216916T3 (pl) 2019-03-29

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