DE202510C - - Google Patents
Info
- Publication number
- DE202510C DE202510C DENDAT202510D DE202510DA DE202510C DE 202510 C DE202510 C DE 202510C DE NDAT202510 D DENDAT202510 D DE NDAT202510D DE 202510D A DE202510D A DE 202510DA DE 202510 C DE202510 C DE 202510C
- Authority
- DE
- Germany
- Prior art keywords
- leather
- glue
- mineral
- treated
- temperatures
- 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.)
- Active
Links
- 239000010985 leather Substances 0.000 claims description 18
- 239000003292 glue Substances 0.000 claims description 15
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 10
- 239000011707 mineral Substances 0.000 claims description 10
- VYZAMTAEIAYCRO-UHFFFAOYSA-N chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 2
- 239000004071 soot Substances 0.000 claims 2
- 239000003513 alkali Substances 0.000 claims 1
- 150000001342 alkaline earth metals Chemical class 0.000 claims 1
- 239000002585 base Substances 0.000 claims 1
- 150000004679 hydroxides Chemical class 0.000 claims 1
- 230000004048 modification Effects 0.000 claims 1
- 238000006011 modification reaction Methods 0.000 claims 1
- 235000010755 mineral Nutrition 0.000 description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 7
- 101700023688 LIME1 Proteins 0.000 description 7
- 235000015450 Tilia cordata Nutrition 0.000 description 7
- 235000011941 Tilia x europaea Nutrition 0.000 description 7
- 239000004571 lime Substances 0.000 description 7
- 238000009835 boiling Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 235000010633 broth Nutrition 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- TZCXTZWJZNENPQ-UHFFFAOYSA-L Barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 210000000988 Bone and Bones Anatomy 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M NaHCO3 Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating Effects 0.000 description 2
- 239000010428 baryte Substances 0.000 description 2
- 229910052601 baryte Inorganic materials 0.000 description 2
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H Tricalcium phosphate Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 229940001607 sodium bisulfite Drugs 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- -1 strontian Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09H—PREPARATION OF GLUE OR GELATINE
- C09H1/00—Pretreatment of collagen-containing raw materials for the manufacture of glue
- C09H1/04—Pretreatment of collagen-containing raw materials for the manufacture of glue of hides, hoofs, or leather scrap
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
- Ja 202510 KLASSE 22/. GRUPPE- Yes 202510 CLASS 22 /. GROUP
Die D. R. P. 155444 und 158732 enthalten Verfahren zur Vorbereitung von mineral- oder chromgarem Leder für die Leimbereitung. Die Arbeitsweise nach diesen Patenten ist dabei die, daß das mineral- oder chromgare Leder einer Säurebehandlung unterworfen wird. Hierdurch werden die Chromsalze wieder löslich gemacht und eine Entgerbung des Leders bewirkt. Alsdann wird nach Entfernung der Säure in bekannter Weise zur Leimfabrikation geschritten.DRP 155444 and 158732 contain procedures for the preparation of mineral or chrome-baked leather for glue preparation. The working method according to these patents is that the mineral or chrome-fermented leather is subjected to an acid treatment. This makes the chromium salts soluble again and causes the leather to be tanned. Then, after removal of the acid, the glue production is carried out in a known manner.
Vorliegendes Verfahren hat die Leimbereitung aus mineral- oder chromgarem Leder ohne einen Säureprozeß zum Gegenstand.The present method has the glue preparation from mineral or chrome leather without an acidic process to the object.
Versuche haben gezeigt, daß sich auch lediglich durch eine alkalische, durch Kalk oder andere Basen bei geeigneten Temperaturen herbeigeführte Behandlnng eine teilweise Entchromung des Leders erzielen läßt, so daß ein nachfolgendes Auskochen mit Wasser bereits eine teilweise Leimgewinnung aus dem mineral- oder chromgaren Leder ermöglicht. Gesteigert wird diese Ausbeute an Leim, wenn der Entleimungsprozeß bei Temperaturen von über ioo° C, z. B. bei 110 bis 1200 C, vorgenommen wird. Diese mehr oder weniger starke Entchromung durch Anwendung von Basen bei höherer Temperatur vervollständigen zu wollen, verbietet sich durch die nachteiligen Einwirkungen, welche die Basen alsdann auf den Leim selbst ausüben. Hingegen haben weitere Versuche gezeigt, daß auch bei höheren Temperaturen ohne Zerstörung der Leimsubstanz eine Entgerbung stattfindet, wenn man an Stelle von Ätzalkalien oder ätzalkalischen Erden Salze derselben, im besonderen die phosphorsauren Salze, anwendet. Beide Verfahren können naturgemäß auch in Verbindung miteinander angewendet werden, und zwar derart, daß das Leder zunächst einer Kalkbehandlung bei geeigneten niederen Temperaturen ausgesetzt wird, und das teilweise entgerbte Leder alsdann unter Zusatz geeigneter, die Entchromung weiter bewirkender Salze bei höheren Temperaturen zu Leim verkocht wird.Experiments have shown that partial dechroming of the leather can also be achieved merely by an alkaline treatment brought about by lime or other bases at suitable temperatures, so that subsequent boiling with water already enables partial glue to be obtained from the mineral or chrome-cooked leather. This glue yield is increased if the de-gluing process is carried out at temperatures of over 100 ° C, e.g. B. at 110 to 120 0 C is made. Trying to complete this more or less strong chromium plating by using bases at a higher temperature is forbidden because of the disadvantageous effects that the bases then exert on the glue itself. On the other hand, further experiments have shown that tanning takes place even at higher temperatures without destroying the glue substance if salts thereof, in particular the phosphoric acid salts, are used instead of caustic alkalis or caustic alkaline earths. Both processes can of course also be used in conjunction with one another, namely in such a way that the leather is first subjected to a lime treatment at suitable low temperatures, and the partially de-tanned leather is then boiled to glue at higher temperatures with the addition of suitable salts which further effect the dechroming .
Mineral- oder chromgares Leder wird mit Kalkbrühe innig verrührt und z. B. 48 Stunden bei 35 ° C. der Ruhe überlassen. Alsdann wird der überschüssige Kalk mit den chromhaltigen Brühen durch Waschen entfernt und in bekannter Weise das Material auf Leim verkocht.Mineral or chrome-cooked leather is thoroughly mixed with lime broth and z. B. 48 hours Leave to rest at 35 ° C. Then the excess lime with the chromium-containing broths are removed by washing and the material is removed in a known manner overcooked on glue.
Mineral- oder chromgares Leder wird mit einer. 1J2 prozentigen Ätzbaryt- oder Strpntianlösung z. B. 12 Stunden bei 260 C. behandelt. Alsdann wird der überschüssige Ätzbaryt oder das überschüssige Strontianhydrat mit den chromhaltigen Brühen durch Waschen entfernt und das so entgerbte Material weiter auf Leim verarbeitet.Mineral or chrome leather comes with a. 1 J 2 percent Ätzbaryt- or Strpntianlösung z. B. 12 hours at 26 0 C. treated. Then the excess etching barite or the excess strontianhydrate with the chromium-containing broths is removed by washing and the material thus de-tanned is further processed on glue.
Mineral- oder chromgares Leder wird mit ■x/4prozentiger Kali- oder Natronlauge wie unter Ib behandelt und darauf auf Leim verkocht.Mineral or chrome-cooked leather is treated with ■ x / 4 percent potassium or sodium hydroxide solution as described under Ib and then cooked on glue.
Das wie unter I a bis I c verhandelte Material wird bei no bis 120 ° C. verkocht.The material dealt with under I a to I c is boiled at no to 120 ° C.
e Beispiel IHa.e example IHa.
Rohes mineral- oder chromgares Leder wird mit Wasser innig verrührt und unter Zusatz von Calciummonophosphat oder einem anderen Calciumphosphat bei 110 bis 1200 C. auf Leim verkocht. Als Träger des Phosphatsalzes können dabei auch rohe Knochen in gemahlener oder geschroteter Form oder bereits mit Säure behandelte entfettete Knochen Anwendung finden.Raw mineral or chromgares leather is vigorously stirred with water and cooked with the addition of calcium monophosphate or another calcium phosphate at 110 to 120 0 C. to glue. Raw bones in ground or crushed form or defatted bones that have already been treated with acid can also be used as a carrier for the phosphate salt.
Beispiel IHb.Example IHb.
Rohes mineral- oder chromgares Leder wirdRaw mineral or chrome leather is used
mit Wasser innig verrührt und unter Zusatz von saurem schwefelsaurem Kalk in der unter HIa gekennzeichneten Weise behandelt.Thoroughly stirred with water and with the addition of acid sulphate of lime in the treated in the manner marked under HIa.
Mit Kalk, Baryt, Strontian, Kali oder Natron nach Beispiel Ia bis Ic vorbehandeltes Material wird nach Zusatz von Calciummonophosphat, saurem schwefelsaurem Kalk oder Natriumbisulfit bei no bis 1200 C. verkocht. Material pretreated with lime, barite, strontian, potash or sodium bicarbonate according to Examples Ia to Ic is boiled at no to 120 ° C. after adding calcium monophosphate, acidic sulfuric acid lime or sodium bisulfite.
Claims (3)
Publications (1)
Publication Number | Publication Date |
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DE202510C true DE202510C (en) |
Family
ID=464992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DENDAT202510D Active DE202510C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE202510C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6154909A (en) * | 1997-02-15 | 2000-12-05 | Preussen Electra Engineering Gmbh | Method of suppressing the formation of sulfuric acid aerosole in exhaust gas purification systems |
-
0
- DE DENDAT202510D patent/DE202510C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6154909A (en) * | 1997-02-15 | 2000-12-05 | Preussen Electra Engineering Gmbh | Method of suppressing the formation of sulfuric acid aerosole in exhaust gas purification systems |
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