DE335869C - Process for the production of a tannin substitute - Google Patents

Process for the production of a tannin substitute

Info

Publication number
DE335869C
DE335869C DE1917335869D DE335869DD DE335869C DE 335869 C DE335869 C DE 335869C DE 1917335869 D DE1917335869 D DE 1917335869D DE 335869D D DE335869D D DE 335869DD DE 335869 C DE335869 C DE 335869C
Authority
DE
Germany
Prior art keywords
tanning
salt
production
tannin
substitute
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
DE1917335869D
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 DE335869C publication Critical patent/DE335869C/en
Expired legal-status Critical Current

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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
    • C14C3/08—Chemical tanning by organic agents
    • C14C3/10—Vegetable 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
    • C14C3/08—Chemical tanning by organic agents
    • C14C3/18—Chemical tanning by organic agents using polycondensation products or precursors thereof
    • C14C3/20—Chemical tanning by organic agents using polycondensation products or precursors thereof sulfonated

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 zur Herstellung eines Gerbstoffersatzes. Nach dem Hauptpatent 322387 wird zur Gewinnung einer Gerbstoffbrühe Pflanzenteer mit einer wäßrigen Lösung von Salzen der schwefligen Säure ausgelaugt. Es hat sich nun gezeigt, daß man an Stelle der besonders hergestellten Lösung von schwefligsauren Salzen auch ein Abfallprodukt der Zellstofffabrikation, nämlich die Sulfitablauge, verwenden kann; denn-auch diese enthält Salze der schwefligen Säure und hat somit ganz ähnliche Wirkung wie die besonders hergestellte Lösung.Process for the production of a tannin substitute. According to the main patent 322387 is used to obtain a tanning broth of plant tar with an aqueous solution leached by salts of sulphurous acid. It has now been shown that you can Instead of the specially prepared solution of sulphurous acid salts also a waste product the pulp production, namely the sulphite waste liquor, can use; because-also this contains salts of sulphurous acid and thus has a very similar effect to that specially made solution.

Die Verwendung von Sulfitablauge besitzt aber gegenüber den wäßrigen Lösungen von schwefligsauren Salzen den Vorzug, daß sie an sich schon gerbende Wirkung hat. Dies ist auch an sich schon bekannt; aber mit Sulfitablauge allein, d. h. ohne Zusatz von anderen Gerbmitteln, kann kein brauchbares Leder erzeugt werden. Dagegen tritt eine neue vorzügliche Gerbwirkung ein, wenn man diejenige Gerbbrühe verwendet, welche entsteht, wenn man diejenige Gerbbrühe verwendet, welche entsteht, wenn man Pflanzenteer mit Sulfitablauge auslaugt. Diese Wirkung übertrifft noch die mit dem Verfahren des Hauptpatentes erreichbare. Zur weiteren Erhöhung der Gerbwirkung kann man der Brühe beliebige Mengen Glaubersalz, Bittersalz oder Kochsalz zusetzen. Die Sulfitablauge kann auch in neutralisierter Form sowie beliebig verdünnt angewendet werden.The use of sulphite waste liquor has however over the aqueous Solutions of sulphurous salts have the advantage that they have a tanning effect in themselves Has. This is already known per se; but with sulphite waste liquor alone, d. H. without If other tanning agents are added, no usable leather can be produced. Against it a new, excellent tanning effect occurs when the tanning liquor is used which arises when one uses that tanning broth which arises when one Plant tar leaches with sulphite waste liquor. This effect even surpasses that with the Process of the main patent achievable. To further increase the tanning effect you can you can add any amount of Glauber's salt, Epsom salt or table salt to the broth. the Sulphite waste liquor can also be used in neutralized form or diluted as required will.

Beispielsweise wird der Teer mit Sulfitablauge in der Hitze unter Umrühren so weit ausgelaugt, daß eine Brühe von 160 B6 erhalten wird, wenn die Flüssigkeit von dem Rückstande getrennt-worden ist. Nach kräftigem Rühren gibt man dieser vom Rückstande getrennten Brühe sodann z5 bis 25 Prozent in Wasser aufgelöstes Glaubersalz hinzu. Man kann den Zusatz sowohl von Sulfitablauge als auch von Glaubersalz beliebig erhöhen oder erniedrigen. Bei Verwendung von Kochsalz oder Bittersalz setzt man jedoch weit weniger zu als oben angegeben wurde.For example, the tar is taken with sulphite waste liquor in the heat Stir so far that a broth of 160 B6 is obtained when the liquid has been separated from the residue. After vigorous stirring, this is given off Then leave residues of separate broth about 5 to 25 percent Glauber's salt dissolved in water added. You can add both sulphite waste liquor and Glauber's salt as you like raise or lower. When using table salt or Epsom salt, you set but far less than stated above.

Die Gerbung des Leders mit dem nach obigem Verfahren hergestellten Extrakt entspricht der reinen vegetabilischen Gerbung. Das Leder bekommt gute Schwellung, und die Durchgerbung geht verhältnismäßig schnell vonstatten. Das Leder erhält bei heller Farbe einen schönen braunen Schnitt und kann vollständig mit dem Gerbstoff satt gegerbt werden.The tanning of the leather with the one prepared according to the above process Extract corresponds to pure vegetable tanning. The leather gets good swelling, and the tanning takes place relatively quickly. The leather receives at light color a nice brown cut and can be completely with the tanning agent to be tanned full.

Claims (2)

PATENT-ANSPRÜcHE: z. Verfahren zur Herstellung eines Gerbstoffersatzes nach Patent 322387, dadurch gekennzeichnet, daß anstatt der wäßrigen. Lösung von Sulfiten Sulfitablauge beliebiger Konzentration zum Auslaugen des Pflanzenteeres benutzt wird. PATENT CLAIMS: e.g. Process for the production of a tannin substitute according to patent 322387, characterized in that instead of the aqueous. Solution of Sulphites Sulphite waste liquor of any concentration for leaching the plant tar is used. 2. Verfahren nach Anspruch F, dadurch gekennzeichnet, daß der mit Sulfitablauge gewonnenen Brühe GlaubersaIz, Bittersalz oder Kochsalz zugesetzt wird.2. The method according to claim F, characterized in that the with Sulphite liquor obtained broth is added to Glauber's salt, Epsom salt or table salt.
DE1917335869D 1916-03-04 1917-07-13 Process for the production of a tannin substitute Expired DE335869C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE322387T 1916-03-04
DE335869T 1917-07-13

Publications (1)

Publication Number Publication Date
DE335869C true DE335869C (en) 1921-04-14

Family

ID=60410196

Family Applications (2)

Application Number Title Priority Date Filing Date
DE1916322387D Expired DE322387C (en) 1916-03-04 1916-03-04 Process for the production of a tannin substitute
DE1917335869D Expired DE335869C (en) 1916-03-04 1917-07-13 Process for the production of a tannin substitute

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE1916322387D Expired DE322387C (en) 1916-03-04 1916-03-04 Process for the production of a tannin substitute

Country Status (1)

Country Link
DE (2) DE322387C (en)

Also Published As

Publication number Publication date
DE322387C (en) 1920-06-24

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