PL1181B1 - A method of making a tannin surrogate. - Google Patents
A method of making a tannin surrogate. Download PDFInfo
- Publication number
- PL1181B1 PL1181B1 PL1181A PL118121A PL1181B1 PL 1181 B1 PL1181 B1 PL 1181B1 PL 1181 A PL1181 A PL 1181A PL 118121 A PL118121 A PL 118121A PL 1181 B1 PL1181 B1 PL 1181B1
- Authority
- PL
- Poland
- Prior art keywords
- tannin
- tar
- surrogate
- tanning
- making
- Prior art date
Links
- 229920001864 tannin Polymers 0.000 title claims description 5
- 239000001648 tannin Substances 0.000 title claims description 5
- 235000018553 tannin Nutrition 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 title description 3
- 238000000034 method Methods 0.000 claims description 6
- 235000013311 vegetables Nutrition 0.000 claims description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical class OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 8
- 239000011269 tar Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 5
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 4
- 150000002989 phenols Chemical class 0.000 description 4
- 235000010265 sodium sulphite Nutrition 0.000 description 4
- 239000010985 leather Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 229940037003 alum Drugs 0.000 description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical class [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 2
- 235000010633 broth Nutrition 0.000 description 2
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 240000000731 Fagus sylvatica Species 0.000 description 1
- 235000010099 Fagus sylvatica Nutrition 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 241000779819 Syncarpia glomulifera Species 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- 229910000366 copper(II) sulfate Inorganic materials 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001739 pinus spp. Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000011273 tar residue Substances 0.000 description 1
- 229940036248 turpentine Drugs 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000011276 wood tar Substances 0.000 description 1
Description
Przedmiotem wynalazku jest sposób wyrobu surogatu garbnika, nadajacego sie do fabrykacji skóry. Garbnik ten stosuje sie w fabrykacji jako taki, lub tez w mieszaninie z uzywanemi dotych¬ czas roslinnemi ekstraktami garbarskiemi, bez zmiany dotychczasowego sposobu pracy.Znanem jest zastosowanie smoly wszel¬ kiego rodzaju do garbowania, stosujac ja, jako taka w polaczeniu z sola ku¬ chenna (patent niemiecki Jsfs 99341), lub tez jako mieszanine smoly z terpentyna i innemi srodkami rozcienczajacemi lub rozpuszczaj acemi (pat. niemiecki JSfe 135844) Wedlug nowego sposobu nie uzywa sie smoly, jako takiej, lecz otrzymuje sie wyciag smoly przez traktowanie wodnemi roztworami soli, szczególnie roztworem siarczanu sodowego. W roz¬ tworze tym rozpuszczaja sie materje majace wartosc dla garbowania, pod¬ czas gdy fenole smoly, które jeszcze zawieraja rosoly garbarskie otrzymy¬ wane wedlug poprzednich patentów, nie sa rozpuszczane. Duza zawartosc fenoli nadaje rosolowi garbarskiemu szkodliwe wlasnosci barwienia skóry zbyt ciemno.Nie mozna bylo przewidziec, ze fe¬ nole te nie rozpuszczaja sie w lugu siarczynu sodowego, chociaz roztwór siarczynu sodowego reaguje zasadowo, a w zasadach fenole sa rozpuszczalne.Roztwór czesci skladowych smoly w roztworze siarczynu sodowego mozebyc bezposrednio uzyty do garbowania; mozna jednak polepszyc plyn garbu¬ jacy przez dodanie alunu lub innych podobnie dzialajacych soli kwasnych, jak siarczan glinu, alun chromowy i t. p. oraz przez dodanie siarczanu miedziowego lub podobnie dzialajacych soli metali ciezkich.Mozliwem jest * takze dodawanie do smoly tych materjalów, jak siarczany glinu i miedzi przed jej przerobieniem; w ten sposób otrzymuje sie takze roztwór, któ¬ ry w razie potrzeby moze byc równiez uzyty do garbowania skóry. ' Rezultat jest jednakowoz znacznie mniej zada- walniajacy, niz w tym wypadku, gdy te ciala zostana dodane dopiero po przeróbce smoly. Mozna takze prze¬ prowadzic dzialanie garbujace jedynie tylko przez jeden z przytoczonych siar¬ czanów. Jednak przy uzyciu tylko siar¬ czanu miedziowego dzialanie garbujace jest znacznie slabsze i skóra jest mniej pelna, niz przy uzyciu siarczanu glino¬ wego lub jednego z siarczanów lub alu¬ nów. Przez dodanie siarczanów glinu i innych—przeciwnie poprawia sie plyn w ten sposób, ze daje rezultaty podob¬ ne do dzialania garbników roslinnych.Jezeli znów wyrzucic siarczan mie^ dziowy, wtedy skóra otrzymuje ciemno¬ brunatne zabarwienie, które nie jest pozadane.Postepowanie moze byc wykonane na drodze mokrej lub przy podwyzszonej temperaturze. Przez podwyzszenie tem¬ peratury proces sie przyspiesza.Naprzyklad rozpuszcza sie w 100 cz* wagowych wody 20 do 30 cz. wagowych siarczynu sodowego lub innej podobnie dzialajacej soli. Do tego roztworu do¬ daje sie 50 cz. wagowych smoly, na¬ przyklad smoly bukowej i przerabia mieszanine przez dluzszy czas miesza¬ jac. Wtedy dodaje sie przy ciaglem mieszaniu 8-10 czesci wagowych siar¬ czanu glinu lub 6-7 czesci wagowych alunu, zatrzymuje mieszadlo, dodaje x/2 do 1 czesci wagowej siarczanu miedzi i znów miesza. Plyn otrzymany w ten sposób, oddziela sie od resztek smoly i moze byc zaraz uzyty do garbowania lub tez moze byc zageszczony przez wyparowanie.Zamiast smoly drzewnej mozna rów¬ niez stosowac surowy kwas drzewny jako produkt wyjsciowy. PLThe present invention relates to a method of producing a tannin surrogate suitable for leather fabrication. This tannin is used in fabrication as such, or in a mixture with the hitherto used vegetable tanning extracts, without changing the working method used to date. chenna (German patent Jsfs 99341), or as a mixture of tar with turpentine and other diluting or dissolving agents (German patent JSfe 135844) According to the new method, tar is not used as such, but is extracted from tar by treating with aqueous salt solutions , especially sodium sulfate solution. Materials having a value for tanning are dissolved in this solution, while the phenols of the tar, which still contain the tanning broths obtained under previous patents, are not dissolved. The high content of phenols gives the tanning broth the harmful properties of dyeing the leather too dark. It could not be predicted that these phenols do not dissolve in the sodium sulphite slurry, although the sodium sulphite solution reacts alkaline, and the phenols in the bases are soluble. sodium sulfite can be directly used in tanning; however, the tanning fluid can be improved by adding alunium or other similarly acting acid salts such as aluminum sulphate, chromium alum, etc., and by adding copper sulphate or similar heavy metal salts. It is also possible to add these materials to the tar, such as aluminum sulphates and copper before processing it; in this way, a solution is also obtained which, if desired, can also be used for tanning leather. 'The result is, however, much less satisfactory than when these bodies are added only after the tar has been processed. It is also possible to carry out a tanning action only through one of the listed sulfates. However, when only cupric sulfate is used, the tanning action is much weaker and the skin is less full than when using aluminum sulfate or one of the sulfates or alumens. By adding aluminum and other sulfates, on the contrary, the fluid is improved so that it produces results similar to those of vegetable tannins. If you throw out the copper sulfate again, the skin becomes dark brown, which is not desired. made on wet roads or at elevated temperatures. By increasing the temperature, the process is accelerated. For example, 20 to 30 parts of water are dissolved in 100 parts by weight of water. by weight of sodium sulphite or another salt with similar effect. To this solution is added 50 parts. weight of tar, for example beech tar, and process the mixture for a longer mixing time. Then 8-10 parts by weight of aluminum sulphate or 6-7 parts by weight of alum are added with constant agitation, the agitator is stopped, is added x / 2 to 1 part by weight of copper sulphate and mixed again. The liquid obtained in this way separates from the tar residue and can be used immediately for tanning or it can be concentrated by evaporation. Instead of wood tar, it is also possible to use crude wood acid as a starting product. PL
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL1181B1 true PL1181B1 (en) | 1925-01-31 |
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