EP0497238A1 - Procédé de teinture du cuir - Google Patents

Procédé de teinture du cuir Download PDF

Info

Publication number
EP0497238A1
EP0497238A1 EP92101257A EP92101257A EP0497238A1 EP 0497238 A1 EP0497238 A1 EP 0497238A1 EP 92101257 A EP92101257 A EP 92101257A EP 92101257 A EP92101257 A EP 92101257A EP 0497238 A1 EP0497238 A1 EP 0497238A1
Authority
EP
European Patent Office
Prior art keywords
leather
weight
dyeing
dyes
water
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.)
Granted
Application number
EP92101257A
Other languages
German (de)
English (en)
Other versions
EP0497238B1 (fr
Inventor
Peter Weinheimer
Norbert Armbrecht
Lothar Dr. Schlösser
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.)
Hoechst AG
Original Assignee
Hoechst AG
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
Application filed by Hoechst AG filed Critical Hoechst AG
Publication of EP0497238A1 publication Critical patent/EP0497238A1/fr
Application granted granted Critical
Publication of EP0497238B1 publication Critical patent/EP0497238B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • D06P3/3206—Material containing basic nitrogen containing amide groups leather skins using acid dyes
    • 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
    • D06P3/3246—Material containing basic nitrogen containing amide groups leather skins using vat, sulfur or indigo dyes

Definitions

  • the invention relates to a method for dyeing leather by the exhaust method.
  • pigments and sulfur dyes play a subordinate role in leather dyeing after the exhaust process.
  • pigments and sulfur dyes play a subordinate role in leather dyeing after the exhaust process.
  • pigments and sulfur dyes play a subordinate role in leather dyeing after the exhaust process.
  • pigments and sulfur dyes play a subordinate role in leather dyeing after the exhaust process.
  • pigments and sulfur dyes play a subordinate role in leather dyeing after the exhaust process.
  • pigments and sulfur dyes play a subordinate role in leather dyeing after the exhaust process.
  • pigments and sulfur dyes play a subordinate role in leather dyeing after the exhaust process.
  • pigments and sulfur dyes play a subordinate role in leather dyeing after the exhaust process.
  • pigments and sulfur dyes play a subordinate role in leather dyeing after the exhaust process.
  • pigments and sulfur dyes play a subordinate role in leather dyeing after the exhaust process.
  • pigments and sulfur dyes play a subordinate role in leather dyeing after the exhaust process.
  • the invention thus relates to a process for dyeing leather by the exhaust process, which is characterized in that a pigment dispersion, the color bodies of which are not dispersed sulfur dyes, and an aqueous solution of water-soluble sulfur dyes are allowed to act on the leather pretreated in the customary manner.
  • the usual pretreatment of the leather before dyeing includes e.g. B. tanning and neutralization.
  • the surprising advantage of the combined use of pigment dispersions and water-soluble sulfur dyes is a synergistic effect: the color in the cross-section succeeds with good coverage of the surface of the leather, and a color depth and brilliance are particularly evident, which in no case also results from the use of the individual coloring components can be achieved with a high amount of use.
  • the light fastness and sweat fastness achieved are higher than those that can be achieved by the previously customary methods.
  • the aqueous pigment dispersions used in the liquor usually have the following composition: 10-60% by weight, preferably 20-40% by weight of pigment, 2 to 30% by weight, preferably 4 to 12% by weight of dispersant, 0-30% by weight, preferably 5-12% by weight of solvent, 0 - 5% by weight, preferably 0.1 - 1% by weight of preservative, 30-70% by weight, preferably 35-55% by weight of water.
  • the pigment consists of water-insoluble inorganic or organic material and comprises e.g. B. all common white, black and colored pigments, such as titanium dioxide, zinc oxide, barium sulfate, silicon dioxide, chrome oxide green, cobalt blue, ultramarine blue, iron blue, sienna brown, iron black, carbon black, azo pigments, lacquered azo pigments, phthalocyanine pigments, dioxazine pigments, pigment pigments, perylene pigment pigments, Triphenylmethane pigments, thioindigo pigments and polymethine pigments.
  • the average grain size of the pigment is usually 20 to 1,000, in particular 100 to 500 nm.
  • Suitable dispersants are compounds which have a molecular weight of 400 to 10,000 g / mol, preferably 500 to 5,000 g / mol, and which continue to be suitable are able to reduce the surface tension of the water due to their surface-active properties and contain surfactant structural elements in their molecules, such as polyether functions, carboxyl functions, sulfonic acid groups, amino functions or quaternary ammonium functions.
  • Suitable dispersants are in particular alkylphenol oxyethylates (EP-A-0 065 751), polyether polyamines (EP-A-0 025 998) and oxyalkylation products, e.g. B. oxalkylated reaction products of glycidyl ethers with alkylamines (EP-A-0 017 189).
  • Polar organic compounds for example organic compounds carrying OH groups and / or ethers, are suitable as solvents.
  • Suitable preservatives are, for example, quaternary ammonium salts such as didecyldimethylammonium chloride, phenols such as 4-chloro-3-methylphenol or ortho-phenylphenol and heterocyclic compounds such as octylisothiazolin-3-one, isothiazoline, 1,2-benzisothiazolin-3-one and methyl benzimidazolylcarbamate.
  • quaternary ammonium salts such as didecyldimethylammonium chloride
  • phenols such as 4-chloro-3-methylphenol or ortho-phenylphenol
  • heterocyclic compounds such as octylisothiazolin-3-one, isothiazoline, 1,2-benzisothiazolin-3-one and methyl benzimidazolylcarbamate.
  • the commercially available water-soluble dyes are suitable as sulfur dyes, as are described, for example, in Melliand Textile Reports 12/1973, pages 1314 to 1327. These dyes include water-soluble pigments and Bunte salts (thiosulfuric acid derivatives).
  • the pigment dispersion and the sulfur dye are applied either together in a liquor or separately in two successive steps, the order of the application being not critical.
  • the sulfur dye can also consist of a mixture of different sulfur dyes, if appropriate a dye mixture of one or more sulfur dyes and one or more other water-soluble or water-dispersible dyes is used, the dye mixture optionally additionally containing the pigment dispersion.
  • Other water-soluble dyes that can be combined with the water-soluble sulfur dye are acid dyes and direct dyes, e.g. B. sulfo group-containing azo dyes, metal complex dyes, nitro and nitroso dyes, carbonyl dyes, polymethine dye, phthalocyanine dyes and reactive dyes. These dyes have an anionic charge character.
  • the leather prepared and pretreated in the usual way is dyed with the sulfur dye, optionally in the presence of the pigment dispersion and / or other water-soluble dyes customary in leather dyeing, by the exhaust process.
  • the dyeing liquor is an aqueous solution which - based on the shaved weight of the leather - 20 to 400, in particular 50 to 200% water, 0.5 to 8, in particular 1.5 to 6%, sulfur dye and optionally 0.1 to 6, in particular Contains 0.1 to 3% of the pigment dispersion and / or 0.1 to 6, in particular 0.1 to 4%, further water-soluble dye.
  • the temperature of this aqueous solution is 20 to 100, in particular 30 to 60 ° C.
  • the entire staining time depends depends on the type of leather to be dyed and is 20 to 300, in particular 30 to 120 minutes.
  • Customary additives are added to the liquor before, during and / or after dyeing. This is e.g. B. aids that promote the penetration of dyes and pigments that lead to a uniform application, so-called leveling agents, and reinforce the fixation of the dyes and pigments on the leather surface.
  • Other common additives are wetting agents, color deepening agents and greasing agents.
  • the entire dyeing process is ended by lowering the pH of the dyeing liquor, preferably with formic acid.
  • the formic acid is allowed to act in the usual way for 10 to 60 minutes.
  • the leather is finished in a manner known per se.
  • Either the leather is pigmented with the pigment dispersion according to the invention after the dyeing process, and this aftertreatment can include simultaneous dyeing with water-soluble sulfur dye.
  • this aftertreatment can include simultaneous dyeing with water-soluble sulfur dye.
  • the final steps are retanning and then the so-called pot dyeing of the leather and fixing with conventional aids.
  • the same or different colors and / or pigments can be used for pot coloring.
  • the dyeing process according to the invention is for all types of leather, for. B. mineral tanned or vegetable tanned grain, suede, suede or nubuck leather of beef, goat, sheep or pork.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coloring (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
EP92101257A 1991-01-30 1992-01-27 Procédé de teinture du cuir Expired - Lifetime EP0497238B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4102670 1991-01-30
DE4102670 1991-01-30

Publications (2)

Publication Number Publication Date
EP0497238A1 true EP0497238A1 (fr) 1992-08-05
EP0497238B1 EP0497238B1 (fr) 1995-08-23

Family

ID=6423974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92101257A Expired - Lifetime EP0497238B1 (fr) 1991-01-30 1992-01-27 Procédé de teinture du cuir

Country Status (9)

Country Link
US (1) US5240463A (fr)
EP (1) EP0497238B1 (fr)
JP (1) JPH04316685A (fr)
KR (1) KR920014987A (fr)
AR (1) AR245797A1 (fr)
BR (1) BR9200272A (fr)
DE (1) DE59203324D1 (fr)
ES (1) ES2077886T3 (fr)
TW (1) TW223668B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5240466A (en) * 1991-02-23 1993-08-31 Casella Aktiengesellschaft Dyeing leather with water-insoluble sulphur dyes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2804138B1 (fr) * 2000-01-20 2002-03-29 Jerome Maini Procede de traitement d'un cuir, et cuir ainsi obtenu

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2170229A (en) * 1985-01-30 1986-07-30 Sandoz Ltd Dyeing leather
EP0377409A2 (fr) * 1989-01-02 1990-07-11 Ciba-Geigy Ag Procédé de teinture du cuir

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2913176A1 (de) * 1979-04-02 1980-10-23 Hoechst Ag Dispergiermittel, verfahren zu deren herstellung und deren verwendung
ES8105696A1 (es) * 1979-09-25 1981-06-01 Hoechst Ag Procedimiento para la preparacion de polieterpoliaminas
DE3120697A1 (de) * 1981-05-23 1982-12-09 Hoechst Ag, 6000 Frankfurt Anionische verbindungen auf basis modifizierter novolack-oxalkylate, ihre herstellung und ihre verwendung als schaumfreie grenzflaechenaktive mittel
DE4105772A1 (de) * 1991-02-23 1992-08-27 Cassella Ag Verfahren zum faerben von leder mit wasserunloeslichen schwefelfarbstoffen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2170229A (en) * 1985-01-30 1986-07-30 Sandoz Ltd Dyeing leather
EP0377409A2 (fr) * 1989-01-02 1990-07-11 Ciba-Geigy Ag Procédé de teinture du cuir

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MELLIAND TEXTILBERICHTE. Nr. 12, 1973, HEIDELBERG DE Seiten 1314 - 1327; HEID ET AL.: '100 Jahre Schwefelfarbstoffe.' *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5240466A (en) * 1991-02-23 1993-08-31 Casella Aktiengesellschaft Dyeing leather with water-insoluble sulphur dyes

Also Published As

Publication number Publication date
US5240463A (en) 1993-08-31
BR9200272A (pt) 1992-10-06
DE59203324D1 (de) 1995-09-28
EP0497238B1 (fr) 1995-08-23
KR920014987A (ko) 1992-08-26
JPH04316685A (ja) 1992-11-09
TW223668B (fr) 1994-05-11
AR245797A1 (es) 1994-02-28
ES2077886T3 (es) 1995-12-01

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