EP0991783A1 - Use of 2-mercapto-pyridine-n-oxide - Google Patents

Use of 2-mercapto-pyridine-n-oxide

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Publication number
EP0991783A1
EP0991783A1 EP98930776A EP98930776A EP0991783A1 EP 0991783 A1 EP0991783 A1 EP 0991783A1 EP 98930776 A EP98930776 A EP 98930776A EP 98930776 A EP98930776 A EP 98930776A EP 0991783 A1 EP0991783 A1 EP 0991783A1
Authority
EP
European Patent Office
Prior art keywords
leather
mercapto
pyridine
oxide
animal hides
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
EP98930776A
Other languages
German (de)
French (fr)
Other versions
EP0991783B1 (en
Inventor
Otto Exner
Heinz-Joachim Rother
Martin Kugler
Hartmut Rehbein
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.)
Lanxess Deutschland GmbH
Original Assignee
Bayer AG
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Publication of EP0991783A1 publication Critical patent/EP0991783A1/en
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Publication of EP0991783B1 publication Critical patent/EP0991783B1/en
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
    • C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
    • 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
    • C14C1/00—Chemical treatment prior to tanning
    • C14C1/02—Curing raw hides

Definitions

  • the present application relates to the use of 2-mercapto-pyridine-N-oxide and / or a metal complex thereof for the preservation of animal hides and
  • the application therefore relates to the use of 2-mercapto-pyridine-N-oxide and / or its salts and / or metal complexes in the preservation of animal hides and leather.
  • 2-Mercapto-pyridine-N-oxide is preferably used in combination with at least one further active ingredient suitable for protecting animal hides and leather.
  • Other active ingredients for a combination with 2-mercapto-pyridine-N-oxide are, in particular, mercaptobenzothiazole, methylene bisthiocyanate, thiocyanatomethylthiobenzothiazole (TCMTB), octylisothiazolinone, N-cyclohexylbenzo-thiophene-2-carboxamide-s, s-dioxide and preferably phenolic compounds in question.
  • phenolic active substances there are preferably phenol derivatives such as tribromophenol, trichlorophenol, tetrachlorophenol, nitrophenol, 3-methyl-4-chlorophenol, 3,5-dimethyl-4-chlorophenol, phenoxyethanol, dichlorophen, o-phenylphenol, m-phenyl phenol, p-phenylphenol, 2-benzyl-4-chlorophenol, 2,4-dichloro-3,5-dimethylphenol, 4-chlorothymol, chlorophene, triclosan, fentichlor and their ammonium, alkali and alkaline earth metal salts and mixtures thereof.
  • phenol derivatives such as tribromophenol, trichlorophenol, tetrachlorophenol, nitrophenol, 3-methyl-4-chlorophenol, 3,5-dimethyl-4-chlorophenol, phenoxyethanol, dichlorophen, o-phenylphenol, m-phenyl phenol, p-
  • Preferred 2-mercapto-pyridine-N-oxide salts and metal complexes are the sodium, potassium salts and copper and zinc complexes.
  • Combinations of 3,5-dimethyl-4-chlorophenol, 2-benzyl-4-chlorophenol, p-chloro-m-cresol (CMK) and / or o-phenylphenol (OPP) as phenolic constituents and 2-mercapto are preferred -pyridine-N-oxide and / or its alkali and alkaline earth metal salts and its metal complexes.
  • Particularly preferred combinations are the combinations of OPP and / or CMK with 2-mercapto-pyridine-N-oxide and / or with its salts and complexes mentioned above.
  • the mixing ratio of 2-mercapto-pyridine-N-oxide is generally 1 part by weight to 5 to 200, preferably 10 to 100, in particular 12 to 50 parts by weight of the further active substances or active substance mixtures.
  • the ratio of the other active substances, in particular the phenolic compounds, to one another can be varied widely and can easily be determined by conventional experiments. With a mixture of e.g. The ratio of OPP and CMK is preferably 1: 1 to 1: 5.
  • the above-mentioned active ingredient or the mixtures of the active ingredients are generally used in the form of formulations.
  • the application concentration is preferably 0.1 to 1% of active ingredient or mixture of active ingredients, based on the hides or leather to be protected.
  • the agents formed in the formulation preferably contain 10 to 50% of the active ingredient or mixture of active ingredients.
  • the agents generally contain 10 to 30% of alkali and / or alkaline earth metal hydroxides as further constituents; 1 to 20% ionic and / or non-ionic emulsifiers; 5 to 30% organic solvents such as in particular glycols, ketones, glycol ethers, alcohols such as ethanol, methanol, 1,2-propanediol, n-propanol, 2-propanol and 0-0.5% aromas and fragrances. The rest is 100% water.
  • the active ingredient or the active ingredient mixtures and the agents which can be produced therefrom are used according to the invention in accordance with generally customary application methods in leather production for protecting animal hides against attack and damage by microorganisms. It is of particular interest that representatives of the species Aspergillus niger, Aspergillus repens, Hormoconis resinae, Penicillium glaucum and Trichoderma viride, Penicillium species such as P. citrinum or
  • Agaf plates are contaminated with conidia of the species Aspergillus niger, Aspergillus repens, Penicillium glaucum, Trichoderma viride and Hormoconis resinae. Subsequently, moist chrome leather (wet blue) treated with mixture I, II and mixture III is applied and incubated for 28 days at 95% relative atmospheric humidity and 20 to 30 ° C.
  • Formulation III 30 parts by weight of p-chloro-m-cresol 1.2 parts by weight of 2-mercapto-pyridine-N-oxide - Na salt

Abstract

The present application relates to the use of 2-mercapto-pyridine N-oxide and/or its alkali metal and alkaline earth metal salts and its metal complexes for the preservation of animal skins and leather.

Description

Verwendung von 2-Mercapto-pyridin-N-oxidUse of 2-mercapto-pyridine-N-oxide
Die vorliegende Anmeldung betrifft die Verwendung von 2-Mercapto-pyridin-N-oxid und/oder einem Metallkomplex hiervon zur Konservierung von tierischen Häuten undThe present application relates to the use of 2-mercapto-pyridine-N-oxide and / or a metal complex thereof for the preservation of animal hides and
Leder.Leather.
2-Mercapto-pyridin-N-oxid sowie seine Verwendung als Konservierungsmittel für Kosmetika ist bekannt (Microbicedes for the Protecting of Materials, Baulens; 1993 Chepron & Hall, S. 294-300).2-mercapto-pyridine-N-oxide and its use as a preservative for cosmetics are known (Microbicedes for the Protecting of Materials, Baulens; 1993 Chepron & Hall, pp. 294-300).
Es wurde nun überraschenderweise gefunden, daß 2-Mercapto-pyridin-N-oxid, seine Salz und Metallkomplexe einen ausgezeichneten und dauerhaften Schutz der tierischen Häute und Leder vor mikrobiellen Befall während der Herstellung und deren Lagerung ermöglicht.It has now surprisingly been found that 2-mercapto-pyridine-N-oxide, its salt and metal complexes enable excellent and long-term protection of the animal hides and leather against microbial attack during manufacture and their storage.
Gegenstand der Anmeldung ist daher die Verwendung von 2-Mercapto-pyridin-N- oxid und/oder seiner Salze und/oder Metallkomplexe bei der Konservierung von tierischen Häuten und Leder.The application therefore relates to the use of 2-mercapto-pyridine-N-oxide and / or its salts and / or metal complexes in the preservation of animal hides and leather.
Bevorzugt wird 2-Mercapto-pyridin-N-oxid in Kombination mit mindestens einem weiteren für den Schutz von tierischen Häuten und Leder geeigneten Wirkstoff verwendet. Als weitere Wirkstoffe für eine Kombination mit 2-Mercapto-pyridin-N- oxid kommen insbesondere Mercaptobenzothiazol, Methylenbisthiocyanat, Thio- cyanatomethylthiobenzothiazol (TCMTB), Octylisothiazolinon, N-Cyclohexylbenzo- thiophen-2-carboxamid-s,s-dioxid und bevorzugt phenolische Verbindungen in Frage.2-Mercapto-pyridine-N-oxide is preferably used in combination with at least one further active ingredient suitable for protecting animal hides and leather. Other active ingredients for a combination with 2-mercapto-pyridine-N-oxide are, in particular, mercaptobenzothiazole, methylene bisthiocyanate, thiocyanatomethylthiobenzothiazole (TCMTB), octylisothiazolinone, N-cyclohexylbenzo-thiophene-2-carboxamide-s, s-dioxide and preferably phenolic compounds in question.
Diese Kombinationen zeigen hervorragende und sich synergistisch ergänzende Eigenschaften und sind ebenfalls Gegenstand der Anmeldung.These combinations show excellent and synergistically complementary properties and are also the subject of the application.
Als phenolische Wirkstoffe kommen vorzugsweise Phenolderivate wie Tribrom- phenol, Trichlorphenol, Tetrachlorphenol, Nitrophenol, 3-Methyl-4-chlorphenol, 3,5- Dimethyl-4-chlorphenol, Phenoxyethanol, Dichlorophen, o-Phenylphenol, m-Phenyl- phenol, p-Phenylphenol, 2-Benzyl-4-chlorphenol, 2,4-Dichlor-3,5-dimethylphenol, 4- Chlorthymol, Chlorophen, Triclosan, Fentichlor sowie deren Ammonium-, Alkali- und Erdalkalisalze sowie deren Gemische in Frage.As phenolic active substances there are preferably phenol derivatives such as tribromophenol, trichlorophenol, tetrachlorophenol, nitrophenol, 3-methyl-4-chlorophenol, 3,5-dimethyl-4-chlorophenol, phenoxyethanol, dichlorophen, o-phenylphenol, m-phenyl phenol, p-phenylphenol, 2-benzyl-4-chlorophenol, 2,4-dichloro-3,5-dimethylphenol, 4-chlorothymol, chlorophene, triclosan, fentichlor and their ammonium, alkali and alkaline earth metal salts and mixtures thereof.
Bevorzugte 2-Mercapto-pyridin-N-oxid-Salze und Metallkomplexe, sind die Natrium-, Kaliumsalze sowie Kupfer- und Zinkkomplexe.Preferred 2-mercapto-pyridine-N-oxide salts and metal complexes are the sodium, potassium salts and copper and zinc complexes.
Bevorzugt sind Kombinationen von 3,5-Dimethyl-4-chlorphenol, 2-Benzyl-4-chlor- phenol, p-Chlor-m-kresol (CMK) und/oder o-Phenylphenol (OPP) als phenolische Bestandteile und 2-Mercapto-pyridin-N-oxid und/oder seine Alkali- und Erdalkalisalze sowie seine Metallkomplexe.Combinations of 3,5-dimethyl-4-chlorophenol, 2-benzyl-4-chlorophenol, p-chloro-m-cresol (CMK) and / or o-phenylphenol (OPP) as phenolic constituents and 2-mercapto are preferred -pyridine-N-oxide and / or its alkali and alkaline earth metal salts and its metal complexes.
Besonders bevorzugte Kombinationen sind die Kombinationen von OPP und/oder CMK mit 2-Mercapto-pyridin-N-oxid und/oder mit seinen oben erwähnten Salzen und Komplexen.Particularly preferred combinations are the combinations of OPP and / or CMK with 2-mercapto-pyridine-N-oxide and / or with its salts and complexes mentioned above.
Insbesondere werden Mischungen enthaltend CMK und 2-Mercapto-pyridin-N-oxid - Na-Salz und gegebenenfalls OPP und deren erfindungsgemäße Verwendung bevorzugt.Mixtures containing CMK and 2-mercapto-pyridine-N-oxide - Na salt and optionally OPP and their use according to the invention are particularly preferred.
Die Mischungsverhältnisse von 2-Mercapto-pyridin-N-oxid beträgt im allgemeinen 1 Gew. -Teil zu 5 bis 200, vorzugsweise 10 bis 100, insbesondere 12 bis 50, Gew - Teile der weiteren Wirkstoffe bzw. Wirkstoffmischungen.The mixing ratio of 2-mercapto-pyridine-N-oxide is generally 1 part by weight to 5 to 200, preferably 10 to 100, in particular 12 to 50 parts by weight of the further active substances or active substance mixtures.
Das Verhältnis der weiteren Wirkstoffe insbesondere der phenolischen Verbindungen untereinander kann breit variiert werden und ist durch übliche Versuche leicht bestimmbar. Bei einer Mischung von z.B. OPP und CMK liegt das Verhältnis vorzugsweise bei 1: 1 bis 1 :5.The ratio of the other active substances, in particular the phenolic compounds, to one another can be varied widely and can easily be determined by conventional experiments. With a mixture of e.g. The ratio of OPP and CMK is preferably 1: 1 to 1: 5.
Der obengenannte Wirkstoff bzw. die Mischungen der Wirkstoffe werden im allgemeinen in Form von Formulierungen eingesetzt. Dabei beträgt die Anwendungskonzentration vorzugsweise 0, 1 bis 1 % Wirkstoff bzw. Wirkstoffmischung bezogen auf die zu schützenden Häute bzw. Leder. Die bei der Formulierung entstehenden Mittel enthalten den Wirkstoff bzw. die Wirkstoffmischung vorzugsweise zu 10 bis 50 %. Als weitere Bestandteile enthalten im allgemeinen die Mittel 10 bis 30 % Alkali- und/oder Erdalkalihydroxide; 1 bis 20 % ionische und/oder nicht- ionische Emulgatoren; 5 bis 30 % organische Lösemittel wie insbesondere Glykole, Ketone, Glykolether, Alkohole wie Ethanol, Methanol, 1,2-Propandiol, n-Propanol, 2-Propanol sowie 0-0,5 % Aroma- und Duftstoffe. Der Rest zu 100 % ist Wasser.The above-mentioned active ingredient or the mixtures of the active ingredients are generally used in the form of formulations. The application concentration is preferably 0.1 to 1% of active ingredient or mixture of active ingredients, based on the hides or leather to be protected. The agents formed in the formulation preferably contain 10 to 50% of the active ingredient or mixture of active ingredients. The agents generally contain 10 to 30% of alkali and / or alkaline earth metal hydroxides as further constituents; 1 to 20% ionic and / or non-ionic emulsifiers; 5 to 30% organic solvents such as in particular glycols, ketones, glycol ethers, alcohols such as ethanol, methanol, 1,2-propanediol, n-propanol, 2-propanol and 0-0.5% aromas and fragrances. The rest is 100% water.
Der Wirkstoff bzw. die Wirkstoffmischungen und die daraus herstellbaren Mittel werden erfindungsgemäß nach allgemein üblichen Anwendungsmethoden bei der Lederherstellung zum Schutz von tierischen Häuten gegen Angriff und Beschädigung durch Mikroorganismen verwendet. Dabei ist von besonderem Interesse, daß Vertreter der Species Aspergillus niger, Aspergillus repens, Hormoconis resinae, Penicillium glaucum und Trichoderma viride, Penicillium- Arten wie P. citrinum oderThe active ingredient or the active ingredient mixtures and the agents which can be produced therefrom are used according to the invention in accordance with generally customary application methods in leather production for protecting animal hides against attack and damage by microorganisms. It is of particular interest that representatives of the species Aspergillus niger, Aspergillus repens, Hormoconis resinae, Penicillium glaucum and Trichoderma viride, Penicillium species such as P. citrinum or
P. glaucum, Paecilomyces variotii, Cladosporium-Arten wie Mucor-Arten wie Mucor mucedo, Rhizopus-Arten wie Rhizopus oryzae, Rhizopus rouxii vollständig und dauerhaft unterdrückt werden.P. glaucum, Paecilomyces variotii, Cladosporium species such as Mucor species such as Mucor mucedo, Rhizopus species such as Rhizopus oryzae, Rhizopus rouxii are completely and permanently suppressed.
Die nachfolgenden Beispiele dienen zur Erläuterung der Erfindung und sind nicht auf diese beschränkt. The following examples serve to illustrate the invention and are not restricted to it.
Beispiel 1example 1
Agafplatten werden mit Konidien der Species Aspergillus niger, Aspergillus repens, Penicillium glaucum, Trichoderma viride und Hormoconis resinae kontaminiert. Anschließend werden mit Mischung I, II und Mischung III behandelte feuchte Chromleder (wet blue) aufgelegt und 28 Tage bei 95 % relativer Luftfeuchtigkeit und 20 bis 30°C inkubiert.Agaf plates are contaminated with conidia of the species Aspergillus niger, Aspergillus repens, Penicillium glaucum, Trichoderma viride and Hormoconis resinae. Subsequently, moist chrome leather (wet blue) treated with mixture I, II and mixture III is applied and incubated for 28 days at 95% relative atmospheric humidity and 20 to 30 ° C.
Mischung I Mischung IIMixture I Mixture II
30 Gew. -Teile p-Chlor-m-kresol 30 Gew.-Teile p-Chlor-m-kresol 13 Gew. -Teile o-Phenylphenol 13 Gew.-Teile o-Phenylphenol30 parts by weight of p-chloro-m-cresol 30 parts by weight of p-chloro-m-cresol 13 parts by weight of o-phenylphenol 13 parts by weight of o-phenylphenol
1,2 Gew.-Teile 2-Mercapto-pyridin- N-oxid - Na-Salz1.2 parts by weight of 2-mercapto-pyridine-N-oxide - Na salt
Mischung IIIMixture III
37 Gew. -Teile p-Chlor-m-kresol37 parts by weight of p-chloro-m-cresol
1,2 Gew.-Teile 2-Mercapto-pyridin-N-oxid Na-Salz1.2 parts by weight of 2-mercapto-pyridine-N-oxide Na salt
Die mit der Mischung I konservierten wet blues zeigen schon nach 10 Tagen Inkubationszeit Schimmelwachstum auf den Prüfkörpern. Im Fall von Mischung II und III wird nach 28 Tagen Inkubationszeit kein Befall festgestellt. The wet blues preserved with mixture I show mold growth on the test specimens after only 10 days of incubation. In the case of mixtures II and III, no infection is found after 28 days of incubation.
Beispiel 2Example 2
Formulierung IFormulation I
27 Gew.-Teile p-Chlor-m-kresol27 parts by weight of p-chloro-m-cresol
12 Gew.-Teile o-Phenylphenol12 parts by weight of o-phenylphenol
1,2 Gew.-Teile 2-Mercapto-pyridin-N-oxid - Na-Salz1.2 parts by weight of 2-mercapto-pyridine-N-oxide - Na salt
12 Gew.-Teile NaOH12 parts by weight of NaOH
14,2 Gew.-Teile 1,2-Propandiol14.2 parts by weight of 1,2-propanediol
Rest zu 100 Gew.-Teile WasserRemainder to 100 parts by weight of water
Formulierung IIFormulation II
37 Gew.-Teile p-Chlor-m-kresol 1,2 Gew.-Teile 2-Mercapto-pyridin-N-oxid - Na-Salz 10,5 Gew.-Teile NaOH 14 Gew.-Teile 1,2-Propandiol37 parts by weight of p-chloro-m-cresol 1.2 parts by weight of 2-mercapto-pyridine-N-oxide - Na salt 10.5 parts by weight of NaOH 14 parts by weight of 1,2-propanediol
Rest zu 100 Gew.-Teile WasserRemainder to 100 parts by weight of water
Formulierung III 30 Gew.-Teile p-Chlor-m-kresol 1,2 Gew.-Teile 2-Mercapto-pyridin-N-oxid - Na-SalzFormulation III 30 parts by weight of p-chloro-m-cresol 1.2 parts by weight of 2-mercapto-pyridine-N-oxide - Na salt
8,5 Gew.-Teile NaOH 14 Gew.-Teile 1,2-Propandiol Rest zu 100 Gew.-Teile Wasser. 8.5 parts by weight of NaOH 14 parts by weight of 1,2-propanediol remainder to 100 parts by weight of water.

Claims

Patentansprüche claims
1. Verwendung von 2-Mercapto-pyridin-N-oxid und/oder seiner Salze und/oder seiner Metallkomplexe bei der Konservierung von tierischen Häuten und Leder.1. Use of 2-mercapto-pyridine-N-oxide and / or its salts and / or its metal complexes in the preservation of animal hides and leather.
2. Verfahren zum Schutz von tierischen Häuten und Leder vor mikrobiellen Befall, dadurch gekennzeichnet, daß man tierische Häute oder Leder mit 2- Mercapto-pyridin-N-oxid versetzt oder auf tierische Häute oder Leder einwirken läßt.2. A process for protecting animal hides and leather from microbial attack, characterized in that animal hides or leather are mixed with 2-mercapto-pyridine-N-oxide or are allowed to act on animal hides or leather.
3. Mittel enthaltend 2-Mercapto-pyridin-N-oxid sowie mindestens einen weiteren für den Schutz von tierischen Häuten und Leder geeigneten Wirkstoff3. Agent containing 2-mercapto-pyridine-N-oxide and at least one other active ingredient suitable for protecting animal hides and leather
4. Mittel gemäß Anspruch 3, enthaltend als zusätzlichen Wirkstoff mindestens eine der Verbindungen Mercaptobenzothiazol, Methylenbisthiocyanat, Thio- cyanatomethylthiobenzothiazol, Octylisothiazolinon, N-Cyclohexylbenzothio- phen-2-carboxamid-s,s-dioxid und/oder eine phenolische Verbindung.4. Composition according to claim 3, containing as an additional active ingredient at least one of the compounds mercaptobenzothiazole, methylene bisthiocyanate, thio-cyanatomethylthiobenzothiazol, octylisothiazolinone, N-cyclohexylbenzothiophene-2-carboxamide-s, s-dioxide and / or a phenolic compound.
5. Mittel gemäß Anspruch 4, enthaltend als phenolische Verbindung Tribrom- phenol, Trichlorphenol, Tetrachlorphenol, Nitrophenol, 3-Methyl-4-chlorphe- nol, 3,5-Dimethyl-4-chlorphenol, Phenoxyethanol, Dichlorophen, o-Phenylphenol, m-Phenylphenol, p-Phenylphenol, 2-Benzyl-4-chlorphenol, 2,4-Di- chlor-3,5-dimethylphenol, 4-Chlorthymol, Chlorophen, Triclosan, Fentichlor sowie deren Ammonium-, Alkali- und Erdalkalisalze sowie deren Gemische.5. Composition according to claim 4, containing as a phenolic compound tribromophenol, trichlorophenol, tetrachlorophenol, nitrophenol, 3-methyl-4-chlorophenol, 3,5-dimethyl-4-chlorophenol, phenoxyethanol, dichlorophen, o-phenylphenol, m -Phenylphenol, p-phenylphenol, 2-benzyl-4-chlorophenol, 2,4-dichloro-3,5-dimethylphenol, 4-chlorothymol, chlorophene, triclosan, fentichlor and their ammonium, alkali and alkaline earth metal salts and mixtures thereof .
6. Mittel gemäß Anspruch 5, enthaltend o-Phenylphenol und/oder p-Chlor-meta- kresol.6. Composition according to claim 5, containing o-phenylphenol and / or p-chloro-meta-cresol.
7. Mittel gemäß mindestens einen der Ansprüche 3 bis 6 enthaltend neben 2-7. Composition according to at least one of claims 3 to 6 containing in addition to 2-
Mercapto-pyridin-N-oxid, mindestens einen weiteren für den Schutz von tierischen Häuten und Leder geeigneten Wirkstoff, Alkali- und/oder Erdalkali- hydroxide, ionische und/oder nicht-ionische Emulgatoren, Lösungsmittel und gegebenenfalls Aroma- und Duftstoffe.Mercapto-pyridine-N-oxide, at least one further active ingredient suitable for protecting animal hides and leather, alkali and / or alkaline earth hydroxides, ionic and / or non-ionic emulsifiers, solvents and optionally flavorings and fragrances.
8. Verwendung von Mitteln nach den Ansprüchen 3 bis 7 bei der und zur Verarbeitung von tierischen Häuten.8. Use of agents according to claims 3 to 7 in and for the processing of animal hides.
9. Tierische Häute, Leder und Produkte die bei der Lederherstellung anfallen oder eingesetzt werden, enthaltend 2-Mercapto-pyridin-N-oxid. 9. Animal hides, leather and products that are produced or used in leather production, containing 2-mercapto-pyridine-N-oxide.
EP98930776A 1997-06-13 1998-06-02 Use of a composition containing 2-mercaptopyridine-N-oxide Expired - Lifetime EP0991783B1 (en)

Applications Claiming Priority (3)

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DE19725017A DE19725017A1 (en) 1997-06-13 1997-06-13 Use of 2-mercapto-pyridine-N-oxide
DE19725017 1997-06-13
PCT/EP1998/003260 WO1998056959A1 (en) 1997-06-13 1998-06-02 Use of 2-mercapto-pyridine-n-oxide

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EP0991783B1 EP0991783B1 (en) 2010-03-03

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US6479521B2 (en) 2002-11-12
NO996130L (en) 1999-12-10
CA2661724A1 (en) 1998-12-17
NZ501646A (en) 2001-09-28
CZ299251B6 (en) 2008-05-28
CA2661724C (en) 2013-05-28
PL194833B1 (en) 2007-07-31
US20020147227A1 (en) 2002-10-10
DE59814438D1 (en) 2010-04-15
CA2293555A1 (en) 1998-12-17
BR9810518A (en) 2000-09-19
CN1218051C (en) 2005-09-07
CA2293555C (en) 2007-05-15
EP0991783B1 (en) 2010-03-03
KR20010013214A (en) 2001-02-26
TR199902951T2 (en) 2000-08-21
WO1998056959A1 (en) 1998-12-17
ES2340228T3 (en) 2010-05-31
ATE459731T1 (en) 2010-03-15
CZ9904457A3 (en) 2001-06-13
AU735238B2 (en) 2001-07-05
DK0991783T3 (en) 2010-06-14
AU8109098A (en) 1998-12-30
MXPA99011362A (en) 2004-09-01
PL337159A1 (en) 2000-07-31
NO996130D0 (en) 1999-12-10
DE19725017A1 (en) 1998-12-17
JP2002504166A (en) 2002-02-05
KR100524094B1 (en) 2005-10-26
PT991783E (en) 2010-04-27
CN1260840A (en) 2000-07-19
ID23533A (en) 2000-04-27

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