CH112329A - Process for the preparation of a tanning agent. - Google Patents
Process for the preparation of a tanning agent.Info
- Publication number
- CH112329A CH112329A CH112329DA CH112329A CH 112329 A CH112329 A CH 112329A CH 112329D A CH112329D A CH 112329DA CH 112329 A CH112329 A CH 112329A
- Authority
- CH
- Switzerland
- Prior art keywords
- sep
- tanning agent
- tanning
- preparation
- sulfur
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 claims description 3
- QWIWYBUPJLCBSE-UHFFFAOYSA-N 3-chloro-2-nitrobenzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC(Cl)=C1[N+]([O-])=O QWIWYBUPJLCBSE-UHFFFAOYSA-N 0.000 claims description 3
- 229930003836 cresol Natural products 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 2
- 229920000159 gelatin Polymers 0.000 claims description 2
- 235000019322 gelatine Nutrition 0.000 claims description 2
- 159000000014 iron salts Chemical class 0.000 claims description 2
- 239000001828 Gelatine Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- NGDNCZPCIZNCQS-UHFFFAOYSA-N ctk3j8699 Chemical compound Cl=S NGDNCZPCIZNCQS-UHFFFAOYSA-N 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- BVIXQDLJPVABSR-UHFFFAOYSA-M ClC=1C(=C(C=CC=1)S(=O)(=O)[O-])[N+](=O)[O-].[Na+] Chemical compound ClC=1C(=C(C=CC=1)S(=O)(=O)[O-])[N+](=O)[O-].[Na+] BVIXQDLJPVABSR-UHFFFAOYSA-M 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- ICGLOTCMOYCOTB-UHFFFAOYSA-N [Cl].[Zn] Chemical compound [Cl].[Zn] ICGLOTCMOYCOTB-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Description
Verfahren zur Darstellung eines Gerbstoffes. Es wurde in weiterer Ausarbeitung des Verfahrens gemäss Hauptpatent gefunden. dass ein Gerbstoff mit wertvollen Eigen schaften entsteht, wenn man Kresol mit Schwefel und Chlornitrobenzolsulfosäure um setzt. Man behandelt zweckmässig .das Kre- sol mit Schwefel oder Schwefel abgebenden Mitteln, wie Chlorschwefel, und setzt das er haltene Produkt mit Chlornitrobenzolsulfo- sä.ure um. Es kann von Vorteil sein, die Umsetzung unter Druck vorzunehmen.
Der Gerbstoff stellt eine homogene, bräunlich gefärbte, sirupartige Lösung dar, ist leicht löslich in Wasser und Alkalien, fällt Gela tine aus ihrer Lösung und gibt charakte ristische Färbungen mit Eisensalzen.
<I>Beispiel:</I> 70 Teile Kres.ol werden mit 20 Teilen Schwefel, bezw. der äquivalenten Menge eines Schwefel abspaltenden Körpers. wie Chlorschwefel, in Gegenwart oder Abwesen heit eines Katalysators, z. B. 3 Teilen Chlor zink, und zweckmässig in Gegenwart eines Lösungsmittels, wie Benzol oder Tetrachlor- kohlenstoff, in bekannter Weise zu einem harzartigen Körper kondensiert. Dieser wird in der zur Lösung erforderlichen Menge wäs serigem Alkali (verdünnter Natronlauge) ge löst.
In die Lösung bringt man unter gutem Rühren 120 Teile chlornitrobenzolsulfosaures Natrium ein und erwärmt, nachdem alles ge löst ist, die Masse langsam bis zum schwa chen Sie-den. Die Siedetemperatur wird so lange eingehalten, bis eine Probe nach Ver dünnen mit Wasser auf Zusatz von Säure keinen Niederschlag mehr ausscheidet. Die erhaltene wässerige Lösung kann zur Trockne eingedampft oder auch als solche nach erfor derlicher Verdünnung und Einstellung auf die erwünschte Acidität zum Gerben verwen det werden. Man erzielt eine rasche Durch gerbung. Die erhaltenen Leder zeichnen sich durch helle Farbe, vollen Griff und hohe Reissfestigkeit aus.
Die Gerbung kann natür lich auch ausgeführt werden in Gegenwart anderer vegetabilischer oder künstlicher GeTb- stoffe.
Process for the preparation of a tanning agent. It was found in a further elaboration of the process according to the main patent. that a tanning agent with valuable properties is created when cresol is reacted with sulfur and chloronitrobenzenesulfonic acid. The cresol is expediently treated with sulfur or sulfur-releasing agents, such as chlorosulphur, and the product obtained is reacted with chloronitrobenzenesulfonic acid. It can be advantageous to carry out the implementation under pressure.
The tanning agent is a homogeneous, brownish, syrupy solution, is easily soluble in water and alkalis, gelatin falls out of its solution and gives characteristic colorations with iron salts.
<I> Example: </I> 70 parts of Kres.ol are mixed with 20 parts of sulfur, resp. the equivalent amount of a sulfur-releasing body. such as chlorosulfur, in the presence or absence of a catalyst unit, e.g. B. 3 parts of chlorine zinc, and conveniently in the presence of a solvent such as benzene or carbon tetrachloride, condensed in a known manner to form a resinous body. This is dissolved in the amount of aqueous alkali (dilute sodium hydroxide solution) required for the solution.
120 parts of sodium chloronitrobenzenesulfonate are introduced into the solution while stirring well and, after everything has been dissolved, the mass is slowly heated until it is weak. The boiling temperature is maintained until a sample no longer separates out after dilution with water and the addition of acid. The aqueous solution obtained can be evaporated to dryness or used as such for tanning after the necessary dilution and adjustment to the desired acidity. A quick tanning is achieved. The leathers obtained are distinguished by their light color, full handle and high tear strength.
The tanning can of course also be carried out in the presence of other vegetable or artificial tanning agents.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE107632X | 1923-02-07 | ||
| CH112329T | 1924-09-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH112329A true CH112329A (en) | 1925-10-16 |
Family
ID=25708017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH112329D CH112329A (en) | 1923-02-07 | 1924-09-15 | Process for the preparation of a tanning agent. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH112329A (en) |
-
1924
- 1924-09-15 CH CH112329D patent/CH112329A/en unknown
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