DE228262C - PROCESS FOR THE PRODUCTION OF TANNING MATERIAL EXTRACTS AND TANNING AGENTS - Google Patents

PROCESS FOR THE PRODUCTION OF TANNING MATERIAL EXTRACTS AND TANNING AGENTS

Info

Publication number
DE228262C
DE228262C DE1909228262D DE228262DA DE228262C DE 228262 C DE228262 C DE 228262C DE 1909228262 D DE1909228262 D DE 1909228262D DE 228262D A DE228262D A DE 228262DA DE 228262 C DE228262 C DE 228262C
Authority
DE
Germany
Prior art keywords
tanning
production
material extracts
agents
extracts
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
DE1909228262D
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.)
Nitritfabrik AG
Original Assignee
Nitritfabrik AG
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 Nitritfabrik AG filed Critical Nitritfabrik AG
Application granted granted Critical
Publication of DE228262C publication Critical patent/DE228262C/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
    • C14C3/08—Chemical tanning by organic agents
    • C14C3/10—Vegetable tanning
    • C14C3/12—Vegetable tanning using purified or modified vegetable tanning agents

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

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

- JV! 228262 -KLASSE 28«. GRUPPE - JV! 228262 - CLASS 28 «. GROUP

NITRITFABRIK AKT-GES. in COPENICK. Verfahren zur Herstellung von Gerbstoffextrakten und Gerbstoffen.NITRITFABRIK AKT-GES. in COPENICK. Process for the production of tannin extracts and tanning agents.

Zusatz zum Patente 218534 vom 21. Juli 1908.Addendum to patent 218534 of July 21, 1908.

Patentiert im Deutschen Reiche vom 21. Dezember 1909 ab. Längste Dauer: 20. Juli 1923.Patented in the German Empire on December 21, 1909. Longest duration: July 20, 1923.

In dem Patent 218534 ist ein Verfahren zur Herstellung von Gerbstoffextrakten geschützt, welches bezweckt, die beim Auslaugen von Gerbmaterialien leicht eintretende teilweise Zersetzung des Gerbstoffs durch vorherige Erhitzung der Gerbmaterialien im trocknen Zustande zu vermeiden.In patent 218534 is a method Protected for the production of tannin extracts, which aims at leaching Partial decomposition of the tanning agent that occurs easily from tanning materials due to previous ones Avoid heating the tanning materials when dry.

Weitere Versuche haben nun gezeigt, daß man den gleichen Zweck auf kaltem Wege erreichen kann, wenn man die Gerbmaterialien einige Zeit in eine Atmosphäre von Schwefligsäuregas bringt und erst daraufhin das Auslaugen vornimmt. Diese Operation kann zweckmäßig in den Diffuseuren selbst ausge-Further experiments have now shown that the same purpose can be achieved in the cold way can be achieved if the tanning materials are immersed in an atmosphere of sulphurous acid gas for some time brings and only then carries out the leaching. This surgery can appropriately designed in the diffusers themselves

1S führt werden, und zwar wird die schweflige Säure vorteilhafterweise durch sterilisierte Luft ausgetrieben, um eine spätere Bildung von Schwefelsäure in den Laugen zu vermeiden. Die auf diesem Wege erhaltenen Laugen sind sogar in verdünntem Zustande außerordentlich lange haltbar. 1 S leads, namely the sulfurous acid is advantageously expelled by sterilized air in order to avoid a later formation of sulfuric acid in the bases. The alkalis obtained in this way can be kept for an extraordinarily long time even in a diluted state.

Claims (1)

PatenT-AnsPRUcη :PATENT APPLICATION: Abänderung des durch Patent 218534 geschützten Verfahrens zur Herstellung von Gerbstoffextrakten und Gerbstoffen, dadurch gekennzeichnet, daß die gerbstoffhaltigen Materialien vor dem Auslaugen einige Zeit einer Behandlung mit Schwefligsäuregas unterworfen werden.Modification of the process for the production of Tannin extracts and tannins, characterized in that the tannin-containing Materials before leaching some time of treatment with sulphurous acid gas be subjected.
DE1909228262D 1908-07-21 1909-12-21 PROCESS FOR THE PRODUCTION OF TANNING MATERIAL EXTRACTS AND TANNING AGENTS Expired DE228262C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE218534T 1908-07-21

Publications (1)

Publication Number Publication Date
DE228262C true DE228262C (en) 1910-11-04

Family

ID=33304718

Family Applications (2)

Application Number Title Priority Date Filing Date
DE1908218534D Expired DE218534C (en) 1908-07-21 1908-07-21 PROCESS FOR THE PRODUCTION OF TANNING MATERIAL EXTRACTS AND TANNING AGENTS
DE1909228262D Expired DE228262C (en) 1908-07-21 1909-12-21 PROCESS FOR THE PRODUCTION OF TANNING MATERIAL EXTRACTS AND TANNING AGENTS

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE1908218534D Expired DE218534C (en) 1908-07-21 1908-07-21 PROCESS FOR THE PRODUCTION OF TANNING MATERIAL EXTRACTS AND TANNING AGENTS

Country Status (1)

Country Link
DE (2) DE218534C (en)

Also Published As

Publication number Publication date
DE218534C (en) 1910-02-01

Similar Documents

Publication Publication Date Title
DE228262C (en) PROCESS FOR THE PRODUCTION OF TANNING MATERIAL EXTRACTS AND TANNING AGENTS
AT53993B (en) Process for the production of tannin extracts.
DE679829C (en) Process for the production of a foamable and bakeable protein product
DE162726C (en)
AT117862B (en) Process for reducing the swellability of hydrate cellulose.
DE251281C (en)
DE464017C (en) Mercury-free staining process for the hair intended for the manufacture of the felt
DE365171C (en) Process for the preparation of compounds of thiodiglycol
DE466780C (en) Process for the preparation of a pest repellent
DE250920C (en)
AT98388B (en) Process for the production of a preparation for coloring human and animal hair.
DE501135C (en) Preparations for the control of insects
DE200667C (en) Process for the production of rubber milk-like, filterable liquids from old rubber or rubber waste.
DE503647C (en) Process for vulcanizing rubber
DE530309C (en) Process for obtaining new products from yeast
AT102297B (en) Process for the preparation of disinfectants from beechwood tar oils made water-soluble or water-emulsifiable with the help of soap.
DE488138C (en) Process for the treatment of wool, fur and similar goods with solutions of substances in organic solvents
DE434569C (en) Process for dehairing and shearing hides and skins
DE398320C (en) Process for concentrating aqueous nitric acid
DE257813C (en)
DE165519C (en)
DE627169C (en) Process for the production of workpieces made of iron and steel that are insensitive to cold scalding, blue cracking and aging
DE294136C (en)
AT68796B (en) Process for the production of tanning preparations which are easily soluble in cold water.
AT28600B (en) Process for converting copal into a mass similar to natural amber.