CH190907A - Process for the production of a tanning substance. - Google Patents
Process for the production of a tanning substance.Info
- Publication number
- CH190907A CH190907A CH190907DA CH190907A CH 190907 A CH190907 A CH 190907A CH 190907D A CH190907D A CH 190907DA CH 190907 A CH190907 A CH 190907A
- Authority
- CH
- Switzerland
- Prior art keywords
- formaldehyde
- ammonia
- production
- sulfonic acid
- tanning
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 7
- 239000000126 substance Substances 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 36
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 12
- 229910021529 ammonia Inorganic materials 0.000 claims description 6
- SLABEOONBHLKSD-UHFFFAOYSA-N O=S1(=O)C(C=C2)=CC=C2OOC2=CC=C1C=C2 Chemical compound O=S1(=O)C(C=C2)=CC=C2OOC2=CC=C1C=C2 SLABEOONBHLKSD-UHFFFAOYSA-N 0.000 claims description 5
- -1 methylene sulfonic acid Chemical compound 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000004312 hexamethylene tetramine Substances 0.000 claims description 2
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 2
- 101100495769 Caenorhabditis elegans che-1 gene Proteins 0.000 claims 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims 1
- 239000003513 alkali Substances 0.000 claims 1
- 239000007859 condensation product Substances 0.000 claims 1
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 4
- DETXZQGDWUJKMO-UHFFFAOYSA-N 2-hydroxymethanesulfonic acid Chemical compound OCS(O)(=O)=O DETXZQGDWUJKMO-UHFFFAOYSA-N 0.000 description 2
- BZOVBIIWPDQIHF-UHFFFAOYSA-N 3-hydroxy-2-methylbenzenesulfonic acid Chemical compound CC1=C(O)C=CC=C1S(O)(=O)=O BZOVBIIWPDQIHF-UHFFFAOYSA-N 0.000 description 2
- 235000010265 sodium sulphite Nutrition 0.000 description 2
- 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 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 229930003836 cresol Natural products 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229960004011 methenamine Drugs 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006277 sulfonation reaction Methods 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 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
- C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
- C08G8/28—Chemically modified polycondensates
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Description
Verfahren zur Herstellung eines gerbend wirkenden Stoffes. In dem Patent Nr. 179459 ist ein Ver fahren zur Herstellung eines gerbend wirken den Stoffes beschrieben, bei dem man die durch Sulfonierung von Rohkresol erhältliche Kresolsulfonsäure, Ammoniak und Formal dehyd in Gegenwart stickstofffreier alkalischer Mittel aufeinander einwirken lässt.
Es wurde nun gefunden, dass man auch einen sehr wertvollen Gerbstoff erhält, wenn man bei dem Verfahren des Hauptpatentes an Stelle der dort genannten Kresolsulfon- säure die durch Einwirkung von Alkalisulfit und Formaldehyd auf 4,4'-Dioxydiphenylsul- fon erhältliche Methylensulfonsäure des 4,4'- Dioxydiphenylsulfons verwendet.
Die Herstellung dieses Gerbstoffes ge schieht praktisch entsprechend den Angaben des Hauptpatentes. Man kann auch hier zuerst Ammoniak und Formaldehyd zu Hexa- methylentetramin umsetzen und letzteres auf die Oxysulfonsäure zur Einwirkung bringen: Desgleichen kann man hier auch Formal- dehyd verwenden, der aus Formaldehyd lie fernden Stoffen während der Reaktion selbst erhalten wird, z.
B. aus Formaldehydbisulfit. <I>Beispiel:</I> In eine Lösung, die man durch Einwir kung von Natriumsulfit und 30 o/oigem For maldehyd auf 300 Teile 4,4'-Dioxydiphenyl- sulfon erhält und die in der Hauptsache .aus einer alkalischen Lösung der Methylensulfon- säure des Dioxydiphenylsulfons und über schüssigem, nicht umgesetztem Natriumsulfit besteht, trägt man 85 Teile 30 %igen For maldehyd und 40 Teile 25 o/oiges Ammoniak ein.
Das Reaktionsgemisch wird 24 Stunden lang am Rückflusskühler gekocht, dann ab gekühlt und durch Zusatz von konzentrierter Schwefelsäure auf den gewünschten Säure grad eingestellt. Man erhält so den Gerb stoff in Form einer schwach bräunlichen Paste. Er liefert beim Gerben weisse, gut gefüllte, lichtechte Leder.
Process for the production of a tanning substance. In the patent no. 179459 a process for the production of a tanning act the substance is described, in which the cresol sulfonic acid, ammonia and formaldehyde obtained by sulfonation of raw cresol can interact in the presence of nitrogen-free alkaline agents.
It has now been found that a very valuable tanning agent is also obtained if, in the process of the main patent, instead of the cresol sulfonic acid mentioned there, the methylene sulfonic acid of the 4, which is obtained by the action of alkali metal sulfite and formaldehyde on 4,4'-dioxydiphenyl sulfone, 4'-Dioxydiphenylsulfons used.
The production of this tanning agent happens practically according to the information in the main patent. Here, too, ammonia and formaldehyde can first be converted to hexamethylene tetramine and the latter can act on the oxysulfonic acid. Formaldehyde can also be used here, which is obtained from the formaldehyde-releasing substances during the reaction itself, e.g.
B. from formaldehyde bisulfite. <I> Example: </I> In a solution which is obtained by the action of sodium sulfite and 30% formaldehyde in 300 parts of 4,4'-dioxydiphenyl sulfone and which is mainly .from an alkaline solution of the There is methylene sulfonic acid of the dioxydiphenyl sulfone and excess, unreacted sodium sulfite, 85 parts of 30% strength formaldehyde and 40 parts of 25% ammonia are entered.
The reaction mixture is boiled for 24 hours on the reflux condenser, then cooled and adjusted to the desired degree of acidity by adding concentrated sulfuric acid. The tanning material is thus obtained in the form of a slightly brownish paste. When tanning, it delivers white, well-filled, lightfast leather.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH179459T | 1936-04-22 | ||
| CH190907T | 1936-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH190907A true CH190907A (en) | 1937-05-15 |
Family
ID=25720318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH190907D CH190907A (en) | 1936-04-22 | 1936-04-22 | Process for the production of a tanning substance. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH190907A (en) |
-
1936
- 1936-04-22 CH CH190907D patent/CH190907A/en unknown
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