CH201010A - Process for the preparation of tanning agents. - Google Patents
Process for the preparation of tanning agents.Info
- Publication number
- CH201010A CH201010A CH201010DA CH201010A CH 201010 A CH201010 A CH 201010A CH 201010D A CH201010D A CH 201010DA CH 201010 A CH201010 A CH 201010A
- Authority
- CH
- Switzerland
- Prior art keywords
- water
- soluble
- products
- tanning agents
- natural resins
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 14
- 238000002360 preparation method Methods 0.000 title description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 13
- 239000000025 natural resin Substances 0.000 claims description 10
- 235000013824 polyphenols Nutrition 0.000 claims description 10
- 239000000047 product Substances 0.000 claims description 8
- 239000003792 electrolyte Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 5
- 230000032050 esterification Effects 0.000 claims description 4
- 238000005886 esterification reaction Methods 0.000 claims description 4
- 150000001299 aldehydes Chemical class 0.000 claims description 2
- 239000007859 condensation product Substances 0.000 claims description 2
- 235000018553 tannin Nutrition 0.000 claims description 2
- 229920001864 tannin Polymers 0.000 claims description 2
- 239000001648 tannin Substances 0.000 claims description 2
- 239000007795 chemical reaction product Substances 0.000 claims 5
- 150000001491 aromatic compounds Chemical class 0.000 claims 1
- -1 aromatic sulfonic acids Chemical class 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229920005989 resin Polymers 0.000 description 10
- 239000011347 resin Substances 0.000 description 10
- 235000010633 broth Nutrition 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 150000003460 sulfonic acids Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QPUYECUOLPXSFR-UHFFFAOYSA-N 1-methylnaphthalene Chemical compound C1=CC=C2C(C)=CC=CC2=C1 QPUYECUOLPXSFR-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 235000017343 Quebracho blanco Nutrition 0.000 description 2
- 241000065615 Schinopsis balansae Species 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 239000012084 conversion product Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- BMRVLXHIZWDOOK-UHFFFAOYSA-N 2-butylnaphthalene-1-sulfonic acid Chemical compound C1=CC=CC2=C(S(O)(=O)=O)C(CCCC)=CC=C21 BMRVLXHIZWDOOK-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 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
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 241000218657 Picea Species 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- NGDNCZPCIZNCQS-UHFFFAOYSA-N ctk3j8699 Chemical compound Cl=S NGDNCZPCIZNCQS-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000012456 homogeneous solution Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 238000001935 peptisation Methods 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001180 sulfating effect Effects 0.000 description 1
- 230000019635 sulfation Effects 0.000 description 1
- 238000005670 sulfation reaction Methods 0.000 description 1
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
- C14C3/18—Chemical tanning by organic agents using polycondensation products or precursors thereof
- C14C3/20—Chemical tanning by organic agents using polycondensation products or precursors thereof sulfonated
-
- 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)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Phenolic Resins Or Amino Resins (AREA)
- Coloring (AREA)
Description
Verfahren zur Darstellung von Gerbstoffen. In der Schweizer Patentschrift Nr.19815'0 ist ein Verfahren zur Darstellung von Gerb stoffen aus Umwandlungsprodukten aus einem Naturharz, einem phenolischen Körper und einem Sulfierungsmittel beschrieben, das dadurch gekennzeichnet ist, dass man die rohen, sulfierten, wasserlöslichen Umwand lungsprodukte von anhaftenden Elektrolyten trennt. Dadurch werden diese an sich sehr elektrolytempfindlichen und daher als Gerb stoffe wenig geeigneten Harzsulfosäuren zu wertvollen Gerbstoffen.
Eine restlose Ent fernung des Elektrolyten ist möglich, jedoch unter technischen Bedingungen schwierig durchzuführen. Anderseits bleibt bei nicht restloser Entfernung der Elektrolyten immer noch eine gewisse Schwerlöslichkeit zurück, die zuweilen stören kann.
Es wurde nun gefunden, dass man eine weitgehende Unempfindlichkeit gegen noch vorhandene Elektrolyte dadurch erreichen kann, dass man die durch Sulfierung von Harzphenolgemischen oder von Harzphenol estern erhaltenen Produkte mit synthetisch hergestellten Gerbstoffen mischt. Als solche Gerbstoffe haben iusbesondere alle Sulfo- säuren der durch Verkettung mehrerer aro matischer Kerne erhaltenen, höher molekula ren Verbindungen zu gelten.
Dies sind also die Sulfosäuren der aus aromatischen Kör pern (Phenolen, Naphtalin, Anilin usw.) und brückenbildenden Mitteln, wie Aldehyden, Schwefel, Chlorschwefel, erhaltenen Kon densationsprodukte. Hierbei kann die Ein führung der Sulfogruppe direkt oder durch Veresterung, Peptisation usw. erfolgen.
Durch dieses Verfahren der Vermischung mit den verschiedenartigsten synthetischen Gerbstoffen erzielt man nicht nur den Vor teil, dass man die Salzempfindlichkeit der eingangs geschilderten Gerbstoffe wesentlich verringert, sondern es ist mit Hilfe dieses Verfahrens auch möglich, ganz allgemein die Eigenschaften der genannten Gerbstoffe weitgehend zu variieren, wodurch die An wendungsmöglichkeit der an sich verhältnis mässig eng umgrenzte Eigenschaften aufwei senden Harzgerbstoffe wesentlich erweitert wird.
Beispiele: 1. 100 Gewichtsteile eines Harzsulfie- rungsproduktes aus deutschem Fichtenharz und Phenol, das nach Beispiel 1 der Schwei zer Patentschrift Nr. 198153 hergestellt wurde, werden in 200 Gewichtsteilen Wasser bei 50 gelöst.
Die Lösung wird mit 100 Ge wichtsteilen eines Gerbstoffes vermischt, den man durch Sulfierung von 81,5 Gewichtstei- len a-Methylnaphtalin mit 110 Gewichtstei len Schwefelsäure (100%ig) und Hinein- peptisieren von 70 Gewichtsteilen eines flüs sigen Harzes aus 2 Mol Phenol mit 1 Mol Paraformaldehyd durch alkalische Kondensa tion erhalten hat.
Die Flüssigkeit wird bei <B>50'</B> so lange verrührt, bis sie vollkommen homogen ist und durch Zugabe von Natron lauge auf einen pH-Wert von annähernd 3 gebracht. Die Salzempfindlichkeit der Lö sung ist hier weitgehend zurückgedrängt. Mit dieser Kombination wird Kalbsblösse dadurch ausgegerbt, dass man diese in einer Grube mit Brühen von 0,5 B6 beginnend behan delt. Man erhält dann ein Leder von heller Farbe, glatten Narben und sehr gutem Stand.
2. 400 Gewichtsteile Harzester aus ame rikanischem Kolophonium und Trikresol durch Veresterung bis zur Säurezahl 20 her gestellt, werden mit. 10%igem Oleum sul- fiert, durch einen Auswaschprozess gemäss der Schweizer Patentschrift Nr. 198153 weit gehend elektrolytfrei gewaschen, getrocknet und gemahlen.
200 Gewichtsteile dieses Pul vers werden allmählich in 500 Gewichtsteile einer 215 % igen Gerbstofflösung gegeben,
die hergestellt wurde durch - ähnlich wie im ersten Beispiel beschriebenes - Hinein- peptisieren eines Phenolformaldehydharzes in Butylnaphthalinsulfosäure. Mit diesem Gerb stoff werden Ptinäsblössen im Fass ausgegerbt. Die Brühenstärke beginnt mit 1 Bö und wird während der Gerbung auf 5 BA ver stärkt.
3. 120 Gewichtsteile der Harzsulfosäure gemäss Beispiel 5 der Schweizer Patentschrift Nr. 198153 aus 120 Gewichtsteilen flüssigem schwedischem Harz und 46 Gewichtsteilen ss-Naphtol hergestellt, werden in 200 Teilen Wasser gelöst und mit Ameisensäure deut lich sauer gestellt. In die Lösung werden 50 Teile einer synthetischen G erbsulfosäure eingerührt, die man durch Einwirkung von Formaldehyd auf Naphtalinsulfosäure erhal ten hat.
Die homogene Lösung wird zur Trockne verdampft und pulverisiert. Mit einer Mischung aus beispielsweise 50 Ge wichtsteilen Quebracho (kaltlöslich, fest) und 50 Gewichtsteilen des eben beschriebenen Gerbstoffpulvers wird durch Auflösen in Wasser eine Brühe von<B>10'</B> B6 hergestellt. In dieser Brühe werden Rindleder ausge gerbt, die im Farbengang bereits durchge gerbt sind. Die Leder erhalten mit dieser Mischung ausser hellerer Farbe einen festeren Stand und grössere Fülle als mit Quebracho allein.
Process for the preparation of tanning agents. In Swiss patent specification No. 19815'0, a method for the preparation of tanning materials from conversion products from a natural resin, a phenolic body and a sulfonating agent is described, which is characterized in that the crude, sulfated, water-soluble conversion products are separated from adhering electrolytes . As a result, these resin sulfonic acids, which are inherently very sensitive to electrolytes and are therefore not very suitable as tanning agents, become valuable tanning agents.
Complete removal of the electrolyte is possible, but difficult to carry out under technical conditions. On the other hand, if the electrolytes are not completely removed, a certain degree of poor solubility still remains, which can sometimes be disruptive.
It has now been found that a substantial degree of insensitivity to electrolytes still present can be achieved by mixing the products obtained by sulphonation of resin phenol mixtures or resin phenol esters with synthetically produced tanning agents. In particular, all sulfonic acids of the higher molecular compounds obtained by linking several aromatic nuclei are to be considered as such tanning agents.
So these are the sulfonic acids of the condensation products obtained from aromatic bodies (phenols, naphthalene, aniline, etc.) and bridging agents such as aldehydes, sulfur, chlorosulfur. The sulfo group can be introduced here directly or by esterification, peptization, etc.
This process of mixing with a wide variety of synthetic tanning agents not only has the advantage that the salt sensitivity of the tanning agents described above is significantly reduced, but with the aid of this method it is also possible to vary the properties of the tanning agents mentioned largely in general, whereby the application of the relatively narrowly defined properties aufwei send resin tanning agents is significantly expanded.
Examples: 1. 100 parts by weight of a resin sulfation product made from German spruce resin and phenol, which was produced according to Example 1 of Swiss Patent No. 198153, are dissolved in 200 parts by weight of water at 50%.
The solution is mixed with 100 parts by weight of a tannin obtained by sulfating 81.5 parts by weight of α-methylnaphthalene with 110 parts by weight of sulfuric acid (100%) and peptizing 70 parts by weight of a liquid resin from 2 moles of phenol with 1 mole of paraformaldehyde by alkaline condensation.
The liquid is stirred at <B> 50 '</B> until it is completely homogeneous and brought to a pH value of approximately 3 by adding sodium hydroxide solution. The salt sensitivity of the solution is largely suppressed here. With this combination, veal pelts are tanned out by treating them in a pit with broths starting at 0.5 B6. A leather of light color, smooth grain and very good standing is then obtained.
2. 400 parts by weight of resin esters made from American rosin and tricresol by esterification up to an acid number of 20 are made with. 10% oleum sulphurised, washed largely free of electrolytes by a washing process according to Swiss patent specification No. 198153, dried and ground.
200 parts by weight of this powder are gradually added to 500 parts by weight of a 215% tanning solution,
which was produced by peptizing a phenol-formaldehyde resin in butylnaphthalene sulfonic acid, similar to that described in the first example. This tanning material is used to tanned Ptinäsblössen in the barrel. The broth strength starts with 1 gust and is strengthened to 5 BA during the tanning process.
3. 120 parts by weight of the resin sulfonic acid according to Example 5 of Swiss Patent No. 198153 prepared from 120 parts by weight of liquid Swedish resin and 46 parts by weight of s-naphthol, are dissolved in 200 parts of water and made significantly acidic with formic acid. 50 parts of a synthetic G erbsulfonic acid are stirred into the solution, which was obtained by the action of formaldehyde on naphthalene sulfonic acid.
The homogeneous solution is evaporated to dryness and pulverized. With a mixture of, for example, 50 parts by weight of quebracho (cold-soluble, solid) and 50 parts by weight of the tanning powder just described, a broth of <B> 10 '</B> B6 is produced by dissolving in water. Cowhides that have already been tanned through in the color process are tanned in this broth. With this mixture, the leathers get a firmer stand and greater fullness than with quebracho alone.
Claims (1)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE817847X | 1936-02-14 | ||
| DE201010X | 1936-02-14 | ||
| DE2136997X | 1936-02-14 | ||
| DE490296X | 1936-02-14 | ||
| DE1936I0054331 DE698980C (en) | 1936-02-14 | 1936-02-15 | Method of tanning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH201010A true CH201010A (en) | 1938-11-15 |
Family
ID=60293621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH201010D CH201010A (en) | 1936-02-14 | 1937-02-06 | Process for the preparation of tanning agents. |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2136997A (en) |
| CH (1) | CH201010A (en) |
| DE (1) | DE698980C (en) |
| FR (1) | FR817847A (en) |
| GB (1) | GB490296A (en) |
-
1936
- 1936-02-15 DE DE1936I0054331 patent/DE698980C/en not_active Expired
-
1937
- 1937-02-06 CH CH201010D patent/CH201010A/en unknown
- 1937-02-10 US US125154A patent/US2136997A/en not_active Expired - Lifetime
- 1937-02-15 FR FR817847D patent/FR817847A/en not_active Expired
- 1937-02-15 GB GB4463/37A patent/GB490296A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2136997A (en) | 1938-11-15 |
| DE698980C (en) | 1940-11-20 |
| FR817847A (en) | 1937-09-11 |
| GB490296A (en) | 1938-08-12 |
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