DE471675C - Leather impregnation process - Google Patents

Leather impregnation process

Info

Publication number
DE471675C
DE471675C DER64262D DER0064262D DE471675C DE 471675 C DE471675 C DE 471675C DE R64262 D DER64262 D DE R64262D DE R0064262 D DER0064262 D DE R0064262D DE 471675 C DE471675 C DE 471675C
Authority
DE
Germany
Prior art keywords
leather
impregnation process
water
impregnated
leather impregnation
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
DER64262D
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
Priority to DER64262D priority Critical patent/DE471675C/en
Application granted granted Critical
Publication of DE471675C publication Critical patent/DE471675C/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
    • C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes

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

Lederimprägnierungsverfahren In dem Patent ,I70 552 ist ein Lederimprägnierungsverfahren angegeben, welches darin besteht, daß man nach einem der üblichen Verfahren gegerbte Blößen mit der Lösung eines Wasserunlöslichen Stoffes behandelt, der als Lösungsmittel solche Flüssigkeiten enthält, welche mit Wasser mischbar sind, und daß sodann die so behandeltenLeder mit Wasser in Berührung gebracht werden.Leather Impregnation Process In patent, 170,552 is a leather impregnation process indicated, which consists in the fact that one tanned by one of the usual methods Pelts treated with a solution of a water-insoluble substance, which acts as a solvent contains such liquids which are miscible with water, and that then the leather treated in this way can be brought into contact with water.

Es hat sich gezeigt, daß durch eine derartige Behandlung die Lederfarbe dunkler wird. Dieser übelstand wird dadurch beseitigt, daß die fertig imprägnierten Leder in wässerige Lösungen gebracht werden, denen der Aufhellung dienende Zusätze beigegeben sind. Als solche Aufhellungsmittel sind organische Säuren oder Alkalien oder alkalische Salze oder ähnliche Stoffe mit Vorteil anwendbar. Beispiele r. Imprägniertes Eisenleder wird in Wasser gebracht, welches o,5 °/fl Ammoniak enthält. 2. Lohgares imprägniertes Leder wird in Wasser gegeben, das r °(o Oaalsäure enthält. 3. Formaldehydgares Leder wird nach der Imprägnierung in Wasser eingelegt, das o,a5 °/o Natriumkarbonat enthält.It has been shown that the leather color is affected by such a treatment gets darker. This deficiency is eliminated by the fact that the finished impregnated Leather can be brought into aqueous solutions, which are brightening additives are included. Such brightening agents are organic acids or alkalis or alkaline salts or similar substances can be used with advantage. Examples r. Impregnated Iron leather is placed in water which contains 0.5% ammonia. 2. Lohgares Impregnated leather is poured into water that contains oaalic acid. 3. Formaldehyde gares After impregnation, leather is placed in water containing 0.5% sodium carbonate contains.

Es sind zwar bereits Verfahren zur Aufhellung von Leder bekannt, doch sind dies Verfahren, welche auf der kombinierten Anwendung von mehreren Lösungen, z. B. zunächst Alkali-, dann Säurelösung, beruhen. Demgegenüber wird nach dem Verfahren gemäß der Erfindung nur mit einer Lösung gearbeitet. Es war auch nicht vorauszusehen, daß es gelingen würde, die nach dem Verfahren des Hauptpatentes bereits imprägnierten Leder in dieser überraschend einfachen Weise von der dunklen, für den Verkauf ungünstigen Tönung zu befreien.Processes for lightening leather are already known, but are these procedures, which are based on the combined application of several solutions, z. B. first alkali, then acid solution based. In contrast, according to the procedure worked according to the invention with only one solution. It was not foreseeable either that it would succeed that already impregnated according to the procedure of the main patent Leather in this surprisingly simple way from the dark, inconvenient for sale Free tint.

Claims (1)

PATRNTANSPRUCH: Abänderung des durch Patent q.7o 552 geschützten Lederimprägnierungsverfahrens, darin bestehend, daß dem mit dem imprägnierten Leder in Berührung zu bringenden Wasser an sich bekannte, das Leder aufhellende Mittel zugegeben werden.PATENT CLAIM: Modification of the leather impregnation process protected by patent q.7o 552, consisting of the one to be brought into contact with the impregnated leather Water, known per se, can be added to lighten the leather.
DER64262D 1925-05-09 1925-05-09 Leather impregnation process Expired DE471675C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER64262D DE471675C (en) 1925-05-09 1925-05-09 Leather impregnation process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER64262D DE471675C (en) 1925-05-09 1925-05-09 Leather impregnation process

Publications (1)

Publication Number Publication Date
DE471675C true DE471675C (en) 1929-02-15

Family

ID=7412358

Family Applications (1)

Application Number Title Priority Date Filing Date
DER64262D Expired DE471675C (en) 1925-05-09 1925-05-09 Leather impregnation process

Country Status (1)

Country Link
DE (1) DE471675C (en)

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