DE688738C - Process for the aftertreatment of fully tanned leathers - Google Patents
Process for the aftertreatment of fully tanned leathersInfo
- Publication number
- DE688738C DE688738C DE1937R0098846 DER0098846D DE688738C DE 688738 C DE688738 C DE 688738C DE 1937R0098846 DE1937R0098846 DE 1937R0098846 DE R0098846 D DER0098846 D DE R0098846D DE 688738 C DE688738 C DE 688738C
- Authority
- DE
- Germany
- Prior art keywords
- water
- oxalic acid
- aftertreatment
- tanning
- tanned leathers
- 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
Links
- 238000000034 method Methods 0.000 title claims description 7
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 30
- 235000006408 oxalic acid Nutrition 0.000 claims description 10
- 239000001913 cellulose Substances 0.000 claims description 6
- 229920002678 cellulose Polymers 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 235000021317 phosphate Nutrition 0.000 claims description 3
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 3
- 239000003925 fat Substances 0.000 claims description 2
- 239000008103 glucose Substances 0.000 claims description 2
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims 1
- 239000010985 leather Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 3
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 229910001463 metal phosphate Inorganic materials 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 235000018553 tannin Nutrition 0.000 description 2
- 229920001864 tannin Polymers 0.000 description 2
- 239000001648 tannin Substances 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 229940116007 ferrous phosphate Drugs 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910000155 iron(II) phosphate Inorganic materials 0.000 description 1
- SDEKDNPYZOERBP-UHFFFAOYSA-H iron(ii) phosphate Chemical compound [Fe+2].[Fe+2].[Fe+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O SDEKDNPYZOERBP-UHFFFAOYSA-H 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000037390 scarring Effects 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000001632 sodium acetate Substances 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
- C14C3/04—Mineral tanning
-
- 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
- C14C3/28—Multi-step processes
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)
Description
Verfahren zum Nachbehandeln von fertiggegerbten Ledern In dem Hauptpatent 660 770 ist ein Gerbverfahren mit in Oxalsäure gelösten wasserunlöslichen Phosphaten von Metallen, deren Verbindungen gerbend wirken, unter Schutz gestellt. U. a. wird dort geschildert, daß man besonders gute Ergebnisse erzielen kann, wann man Blößen mit pflanzlichen Gerbstoffen oder Sulfitcelluloseextrakt vorgerbt und dann mit Aluminiumphosphat in oxalsaurer Lösung fertiggerbt. Man erhält .auf diese Weise Leder mit sehr gutem Schnitt und-hohem Stand, in dem der ungebundene Pflanzengerbstoff oder sonstige Vorgerbstoff weitgehend fixiert ist.Process for the aftertreatment of fully tanned leathers In the main patent 660 770 a tanning process with water-insoluble phosphates of metals, the compounds of which have a tanning effect, dissolved in oxalic acid, is protected. I.a. it is described there that one can achieve particularly good results when pelts are pretanned with vegetable tanning agents or sulfite cellulose extract and then finish-tanned with aluminum phosphate in an oxalic acid solution. In this way, leather with a very good cut and a high level of stability is obtained, in which the unbound vegetable tanning agent or other pretanning agent is largely fixed.
Im Hauptpatent ist ferner beschrieben, daß man auch bei fertiggegerbten Ledern verschiedener Gerbung durch Nachbehandlung mit in Oxalsäure gelösten wasserunlöslichen, gerbend wirkenden Metallphosphaten besondere Effekte erzielen kann.In the main patent it is also described that one can also use finished tanned Leathers of different tanning by post-treatment with water-insoluble, dissolved in oxalic acid, tanning metal phosphates can achieve special effects.
Es hat sich bei der weiteren Ausarbeitung des Verfahrens zum Nachgerben fertiggegerbter Leder als günstig erwiesen, Gerbstofflösungen zu verwenden, die neben den in Oxalsäure gelösten wasserunlöslichen, gerbend wirkenden Metallphosphaten noch Stoffe, die die Elastizität des Narbens erhöhen, wie Traubenzucker, Sulfi.tcelluloseextrakt und wasserlösliche Fette, enthalten.It has been used in further elaboration of the retanning process Ready-tanned leather proved to be beneficial to use tanning solutions that in addition to the water-insoluble, tanning metal phosphates dissolved in oxalic acid nor substances that increase the elasticity of the grain, such as grape sugar, sulfite cellulose extract and water soluble fats.
An die Imprägnierung mit der oxalsauren .Lösung des wasserunlöslichen Metallphosphats und des Stoffes zur Erhöhung der Elastizität . des Narbens kann gegebenenfalls auch noch eine Imprägnierung mit bekannten Imprägniermitteln, z. B. kolloider Kieselsäure, angeschlossen werden.The impregnation with the oxalic acid solution of the water-insoluble Metal phosphate and the substance to increase elasticity. of scarring can possibly also another impregnation with known impregnation agents, z. B. colloidal silica, can be connected.
Das beanspruchte Verfahren hat den. großen Vorteil, daß dadurch die Luftdurchlässigkeit des Leders nicht beeinträchtigt wird und daß die Wasserdichtigkeit :erhöht wird.The claimed method has the. great advantage that thereby the The air permeability of the leather is not impaired and that the water tightness : is increased.
In den $eispielen befinden sich einige Ausführungsformen des Verfahrens. Beispiel i i oo kg neutralisiertes und abgelüftetes Chromleder werden mit einer Lösung aus 14,51 Wasser, 5, 5 kg Aluminiumphosphat (wasserfrei), 4,o kg Oxalsäure (krist.) und 6,okg Sulfitcelluloseextrakt mit 440l0 Gerbstoff im Faß i Stunde lang gewalkt, bis die gesamte Brühe aufgenommen ist. Über Nacht werden die Leder auf dem Bock gelagert, dann zur @ Fixierung mit einer Lösung .aus i o kg Natriumacetat und i o 1 Wasser nachbehandelt. Beispiel 2 i oo kg feuchtes und abgelüftetes lohgares oder Sulfitcelluloseunterleder werden mit einer Lösung aus 7,31 Wasser, 2,7 kg Aluminiumphosphat (wasserfrei), 2,okg;Oxalsäure (krist.) und 3,okg Sulfitcelluloseextrakt mit 44% Gerbstoff so lange gewalkt, bis die gesamte Brühe aufgenommen ist. Über Nacht werden die Leder auf dem Bock gelagert, dann auf dem Narben leicht abgeölt und getrocknet. ' Beispiel 3 Trocknes Chromsohlleder wird in einer Lösung von i 7 Teilen. Ferriphosphat ( i o0 o/oig ), 18 Teilen Oxalsäure, 36 Teilen Wasser von 6o° C, 18 Teilen Ammoniaklösung (i o % ig) und i i Teilen Traubenzucker 2 Stunden eingetaucht, über Nacht auf dem Bock gelagert, dann auf.beiden Seiten abgeölt, getrocknet und wie üblich zugerichtet.Some embodiments of the method are shown in the examples. EXAMPLE II Oo kg of neutralized and flashed chrome leather are drummed for one hour with a solution of 14.5 l of water, 5.5 kg of aluminum phosphate (anhydrous), 4.0 kg of oxalic acid (crystalline) and 6.0 kg of sulfite cellulose extract with 440 l0 tannin until all of the broth is absorbed. The leathers are stored on the trestle overnight and then post-treated with a solution of 10 kg of sodium acetate and 10 1 of water for fixation. EXAMPLE 2 100 kg of moist and ventilated tan or sulphite cellulose lower leather are treated with a solution of 7.31 of water, 2.7 kg of aluminum phosphate (anhydrous), 2, okg; oxalic acid (crystalline) and 3, okg of sulphite cellulose extract with 44% tannin Milled until all of the broth is absorbed. The leathers are stored on the trestle overnight, then lightly oiled on the grain and dried. 'Example 3 Dry chrome sole leather is in a solution of i 7 parts. Ferrous phosphate (10% strength ), 18 parts of oxalic acid, 36 parts of water at 60 ° C, 18 parts of ammonia solution (10%) and ii parts of glucose immersed for 2 hours, stored on the trestle overnight, then oiled on both sides , dried and prepared as usual.
Claims (1)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER97684D DE660770C (en) | 1936-10-24 | 1936-10-25 | Process for tanning animal hide |
| DE1937R0098846 DE688738C (en) | 1936-10-24 | 1937-03-13 | Process for the aftertreatment of fully tanned leathers |
| BE423179D BE423179A (en) | 1936-10-24 | 1937-08-18 | TANNING PROCESS |
| FR825842D FR825842A (en) | 1936-10-24 | 1937-08-23 | Tanning process |
| US168051A US2115880A (en) | 1936-10-24 | 1937-10-08 | Tanning process |
| GB27609/37A GB503551A (en) | 1936-10-24 | 1937-10-11 | Improvements in or relating to the treatment of hides or skins |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2115880X | 1936-10-24 | ||
| DE825842X | 1936-10-24 | ||
| DE423179X | 1936-10-24 | ||
| DE503551X | 1936-10-24 | ||
| DER97684D DE660770C (en) | 1936-10-24 | 1936-10-25 | Process for tanning animal hide |
| DE1937R0098846 DE688738C (en) | 1936-10-24 | 1937-03-13 | Process for the aftertreatment of fully tanned leathers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE688738C true DE688738C (en) | 1940-02-29 |
Family
ID=60293631
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DER97684D Expired DE660770C (en) | 1936-10-24 | 1936-10-25 | Process for tanning animal hide |
| DE1937R0098846 Expired DE688738C (en) | 1936-10-24 | 1937-03-13 | Process for the aftertreatment of fully tanned leathers |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DER97684D Expired DE660770C (en) | 1936-10-24 | 1936-10-25 | Process for tanning animal hide |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2115880A (en) |
| BE (1) | BE423179A (en) |
| DE (2) | DE660770C (en) |
| FR (1) | FR825842A (en) |
| GB (1) | GB503551A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2630701B2 (en) * | 1991-10-21 | 1997-07-16 | 陸郎 野津 | Turbine rotor blades for symmetric blade turbines |
-
1936
- 1936-10-25 DE DER97684D patent/DE660770C/en not_active Expired
-
1937
- 1937-03-13 DE DE1937R0098846 patent/DE688738C/en not_active Expired
- 1937-08-18 BE BE423179D patent/BE423179A/en unknown
- 1937-08-23 FR FR825842D patent/FR825842A/en not_active Expired
- 1937-10-08 US US168051A patent/US2115880A/en not_active Expired - Lifetime
- 1937-10-11 GB GB27609/37A patent/GB503551A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2115880A (en) | 1938-05-03 |
| BE423179A (en) | 1937-09-30 |
| FR825842A (en) | 1938-03-15 |
| GB503551A (en) | 1939-04-11 |
| DE660770C (en) | 1938-06-02 |
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