EP0497238B1 - Procédé de teinture du cuir - Google Patents

Procédé de teinture du cuir Download PDF

Info

Publication number
EP0497238B1
EP0497238B1 EP92101257A EP92101257A EP0497238B1 EP 0497238 B1 EP0497238 B1 EP 0497238B1 EP 92101257 A EP92101257 A EP 92101257A EP 92101257 A EP92101257 A EP 92101257A EP 0497238 B1 EP0497238 B1 EP 0497238B1
Authority
EP
European Patent Office
Prior art keywords
weight
dyes
leather
water
sulfur
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
EP92101257A
Other languages
German (de)
English (en)
Other versions
EP0497238A1 (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 using 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 using the methods previously used.
  • 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, 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, for example, 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 colored salts (thiosulfuric acid derivatives).
  • the pigment dispersion and the sulfur dye are applied either together in one 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, contains 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 left to act in the usual way for 10 to 60 minutes.
  • the leather is finished in a manner known per se.
  • the leather is pigmented with the pigment dispersion according to the invention, 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 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 from cattle, goat, sheep or pork.
  • Upper leather The percentages are percentages by weight, based on the shaved weight. The process is described from the tanning step. 2. Upper leather: The percentages are percentages by weight, based on the shaved weight. The process is described from the tanning step 3. Furniture leather: The percentages relate to the dry weight.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coloring (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Claims (7)

  1. Procédé pour la teinture du cuir selon le procédé d'épuisement caractérisé en ce qu'on fait agir sur le cuir une dispersion pigmentaire dont les corps colorants ne sont pas des colorants au soufre dispersés et une solution aqueuse de colorants au soufre en une étape ou successivement.
  2. Procédé selon la revendication 1, caractérisé en ce que le colorant au soufre se compose du mélange de différents colorants au soufre.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'on utilise un ou plusieurs colorants au soufre et un ou plusieurs autres colorants hydrosolubles, ou bien dispersables dans l'eau.
  4. Procédé selon la revendication 3, caractérisé en ce qu'on utilise en tant que colorants hydrosolubles des colorants acides et des colorants directs.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce qu'on fait agir sur le cuir une dispersion pigmentaire de composition suivante :
       de 10 à 60, de préférence de 20 à 40 % en poids de pigment,
       de 2 à 30, de préférence de 4 à 12 % en poids d'agent dispersant,
       de 0 à 30, de préférence de 5 à 12 % en poids de solvant,
       de 0 à 5, de préférence de 0,1 à 1 % en poids d'agent conservateur, et
       de 30 à 70, de préférence de 35 à 55 % en poids d'eau.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce qu'on fait agir sur le cuir un bain aqueux, qui contient, par rapport au poids décharné du cuir,
    de 20 à 400, de préférence de 50 à 200 % en poids d'eau, de 0,5 à 8, de préférence de 1,5 à 6 % en poids de colorant au soufre, et éventuellement de 0,1 à 6, de préférence de 0,1 à 3 % en poids de la dispersion pigmentaire et/ou
    de 0,1 à 6, de préférence de 0,1 à 4 % en poids d'autres colorants hydrosolubles.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que la durée de teinture est de 20 à 300, de préférence de 30 à 120 minutes.
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 EP0497238A1 (fr) 1992-08-05
EP0497238B1 true 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)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4105772A1 (de) * 1991-02-23 1992-08-27 Cassella Ag Verfahren zum faerben von leder mit wasserunloeslichen schwefelfarbstoffen
FR2804138B1 (fr) * 2000-01-20 2002-03-29 Jerome Maini Procede de traitement d'un cuir, et cuir ainsi obtenu

Family Cites Families (6)

* 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
CH671052A5 (fr) * 1985-01-30 1989-07-31 Sandoz Ag
EP0377409B1 (fr) * 1989-01-02 1995-03-08 Ciba SC Holding AG Procédé de teinture du cuir
DE4105772A1 (de) * 1991-02-23 1992-08-27 Cassella Ag Verfahren zum faerben von leder mit wasserunloeslichen schwefelfarbstoffen

Also Published As

Publication number Publication date
AR245797A1 (es) 1994-02-28
KR920014987A (ko) 1992-08-26
BR9200272A (pt) 1992-10-06
JPH04316685A (ja) 1992-11-09
ES2077886T3 (es) 1995-12-01
EP0497238A1 (fr) 1992-08-05
TW223668B (fr) 1994-05-11
DE59203324D1 (de) 1995-09-28
US5240463A (en) 1993-08-31

Similar Documents

Publication Publication Date Title
EP0501197A1 (fr) Procédé de teinture pour cuir aves des colorants au soufre insolubles dans l'eau
EP0350803B1 (fr) Procédé de pigmentation du cuir à partir d'un bain
EP0497238B1 (fr) Procédé de teinture du cuir
CH671052A5 (fr)
EP0013369B1 (fr) Procédé de teinture de cuir à fleur
EP0564404B1 (fr) Procédé de teinture du cuir avec des mélanges de colorants
EP0577556B1 (fr) Procédé pour teindre du cuir par trichromie avec des mélanges de colorants
EP0558450B1 (fr) Procédé pour teindre du cuir avec des mélanges de colorants
DE1719383A1 (de) Verfahren zum Faerben von Gemischen aus Elastomer- und Polyamidfasern
DE2154458C3 (de) Verfahren zum Färben von Polypeptidfasern und dafür geeignete Gemische
DE685744C (de) Verfahren zum Fixieren von Gerbstoffen im Leder
EP0243788B1 (fr) Agent de traitement du cuir
DE2638236A1 (de) Verfahren zum faerben von leder durch gleichzeitige anwendung saurer und basischer farbstoffe
DE1444215A1 (de) Verfahren und Zusammensetzung zum Faerben von Polyamidfasern
DE3720845A1 (de) Lederfaerbeverfahren
DE3539475A1 (de) Verfahren zum faerben von wollstueckware
DE970200C (de) Verfahren zur Herstellung von Leder
CH666297A5 (de) Verfahren zum faerben von leder.
EP0414117A2 (fr) Procédé de pigmentation du cuir par bain
AT166455B (de) Verfahren zum Färben von tierischen Haarfasern
DE584541C (de) Verfahren zur Veredlung von vegetabilischen Gerbstoffextrakten
DE714789C (de) Verfahren zum Faerben von animalisierten Fasern oder Gebilden aus regenerierter Cellulose oder aus Cellulosederivaten oder von Mischungen daraus, die Wolle enthalten koennen, mit sauren Wollfarbstoffen
CH276173A (de) Zeichenhilfsgerät.
DE3001301A1 (de) Verfahren zum vorbereiten von anionisch gegerbtem oder nachgegerbtem leder
DE2502563C3 (de) Verfahren zum Entfetten und anschließendem Färben sowie gegebenenfalls Rückfetten von gegerbten Naturfellen und Pelzen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR IT NL PT SE

17P Request for examination filed

Effective date: 19921120

17Q First examination report despatched

Effective date: 19941011

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR IT NL PT SE

REF Corresponds to:

Ref document number: 59203324

Country of ref document: DE

Date of ref document: 19950928

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 19951020

Year of fee payment: 5

ITF It: translation for a ep patent filed

Owner name: ING. C. GREGORJ S.P.A.

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2077886

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19951216

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19951221

Year of fee payment: 5

SC4A Pt: translation is available

Free format text: 951009 AVAILABILITY OF NATIONAL TRANSLATION

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19951230

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19960118

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960316

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19970128

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19970128

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Effective date: 19970731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19970801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19970930

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19970801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19971001

EUG Se: european patent has lapsed

Ref document number: 92101257.1

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 19970731

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19991201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050127