DE353130C - Process for neutralizing chrome leather - Google Patents

Process for neutralizing chrome leather

Info

Publication number
DE353130C
DE353130C DE1919353130D DE353130DD DE353130C DE 353130 C DE353130 C DE 353130C DE 1919353130 D DE1919353130 D DE 1919353130D DE 353130D D DE353130D D DE 353130DD DE 353130 C DE353130 C DE 353130C
Authority
DE
Germany
Prior art keywords
neutralizing
chrome leather
alkalis
alkaline earths
chrome
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
Application number
DE1919353130D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of DE353130C publication Critical patent/DE353130C/en
Expired legal-status Critical Current

Links

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
    • C14C3/06—Mineral tanning using chromium compounds
    • 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

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 Neutralisieren von Chromleder. Das Hauptpatent betrifft ein Verfahren zum Neutralisieren von Chromleder mit Soda oder anderen kohlensauren Salzen der Alkalien oder alkalischen Erden. Das Verfahren ist dadurch gekennzeichnet, daß man beim Neutralisieren mit den genannten Stoffen gleichzeitig Formaldehyd oder niedere fettsaure oder oxyfettsaure Salze der Alkalien oder alkalischen Erden mitbenutzt. Dadurch wird die Wirkung von Borax, dem bisher besten Neutralisierungsmittel, nichtnur erreicht, sondern noch übertroffen.Process for neutralizing chrome leather. The main patent concerns a method of neutralizing chrome leather with soda or other carbonates Salts of alkalis or alkaline earths. The procedure is characterized by that when neutralizing with the substances mentioned, formaldehyde or at the same time lower fatty acid or oxy fatty acid salts of alkalis or alkaline earths are also used. This will not only reduce the effect of borax, the best neutralizing agent to date achieved, but exceeded.

Es wurde nun gefunden, daß auch Alkali-und Erdalkalisalze anderer schwacher anorganischer Säuren als der Kohlensäure, wie z. B. Sulfite, Thiosulfate, Phosphite, Arsenite, Arsenate, neben den Alkali- oder Erdalkalikarbonaten eine ähnliche 'Wirkung zeigen wie die oben genannten organischen Verbindungen. Es können also jene anorganischen Salze gleichfalls mit Vorteil beim Neutralisieren von Chromleder mitverwendet werden. B eispiel.It has now been found that alkali and alkaline earth salts of others weaker inorganic acids than carbonic acid, such as B. sulfites, thiosulfates, Phosphites, arsenites, arsenates, in addition to the alkali or alkaline earth carbonates, a similar one 'Show the same effect as the organic compounds mentioned above. So it can those inorganic salts also have an advantage in neutralizing chrome leather can also be used. Example.

ioo kg Blößen werden mit einer der bekannten Chromgerbbrühen gegerbt, mit Nasser gewaschen, dann in einem Bad von 1501 Wasser mit 8oo g Kalziumkarbonat und Zoo g Natriumsulfit bewegt, bis die Neutralisierung eingetreten ist, und dann nochmals mit Wasser ausgewaschen.100 kg of pelts are tanned with one of the well-known chrome tanning liquors, Washed with water, then in a bath of 150 liters of water with 800 g of calcium carbonate and zoo g sodium sulfite agitated until neutralization has occurred, and then washed out again with water.

Claims (1)

PATENTANSPRUCH: Abänderung des durch Patent 352285 geschützten Verfahrens zum Neutralisieren von Chromleder mit Soda oder anderen kohlensauren Salzen der Alkalien oder alkalischen Erden, dadurch gekennzeichnet, daß man an Stelle von niederen fettsauren oder oxyfettsauren Salzen der Alkalien oder Erdalkalien solche anderer schwacher- anorganischer Säuren als der Kohlensäure mitverwendet. PATENT CLAIM: Modification of the process protected by patent 352285 for neutralizing chrome leather with soda or other carbonic acid salts of alkalis or alkaline earths, characterized in that, instead of lower fatty acid or oxyfatty acid salts of alkalis or alkaline earths, weak inorganic acids other than the Carbon dioxide is also used.
DE1919353130D 1916-11-17 1919-12-02 Process for neutralizing chrome leather Expired DE353130C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE516951X 1916-11-17
DE352285T 1916-11-18
DE353131T 1919-12-02
DE353130T 1919-12-02

Publications (1)

Publication Number Publication Date
DE353130C true DE353130C (en) 1922-05-20

Family

ID=60571012

Family Applications (3)

Application Number Title Priority Date Filing Date
DE1916352285D Expired DE352285C (en) 1916-11-17 1916-11-18 Process for neutralizing chrome leather
DE1919353130D Expired DE353130C (en) 1916-11-17 1919-12-02 Process for neutralizing chrome leather
DE1919353131D Expired DE353131C (en) 1916-11-17 1919-12-02 Process for neutralizing mineral tanned leathers

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE1916352285D Expired DE352285C (en) 1916-11-17 1916-11-18 Process for neutralizing chrome leather

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE1919353131D Expired DE353131C (en) 1916-11-17 1919-12-02 Process for neutralizing mineral tanned leathers

Country Status (2)

Country Link
DE (3) DE352285C (en)
FR (1) FR516951A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE937371C (en) * 1944-10-03 1956-01-05 Boehme Fettchemie G M B H Process for de-acidifying chrome leather

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750988C (en) * 1937-01-26 1953-03-02 Ig Farbenindustrie Ag Process for tanning with tanning agents containing aluminum
DE8418939U1 (en) * 1984-06-23 1984-09-20 Paul Hettich GmbH & Co, 4983 Kirchlengern MOUNTING PLATE FOR A HIGH-ADJUSTABLE FURNITURE HINGE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE937371C (en) * 1944-10-03 1956-01-05 Boehme Fettchemie G M B H Process for de-acidifying chrome leather

Also Published As

Publication number Publication date
DE353131C (en) 1922-05-12
DE352285C (en) 1922-04-22
FR516951A (en) 1921-04-28

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