Henkel Kommanditgesellschaft Auf Aktien

Henkel Kommanditgesellschaft Auf Aktien (henkel Kgaa)

Emil Ruscheinsky

Rudolf Zauns-Huber

Klaus Schumann

Juergen Plapper

Emanuel Arndt

Wolfgang Ritter

Heinz G Smolka

Milan J Schwuger

Hans-Herbert Friese

Hans-Dieter Sitz

Fredi Wolter

Uwe Ploog

Ludwig Schieferstein

Joachim Conradi

Jurgen Plapper

Stefanie Ortanderl

Herman Jansen

Rudolf Zauns

The present invention relates to the use of water-dispersible and/or water-emulsifiable amphiphilic co-oligomer of fatty crotonates and radical-copolymerizable hydrophilic ethylenically unsaturated acids and/or anhydrides thereof which may also contain small quantities of other copolymerizable comonomers, for the oiling and optionally waterproof finishing of leathers and skins.

Leather oiling preparations and their use

New leather oiling preparations and their use

Aqueous dispersions of new amphiphilic co-oligomers for the washing- and

An aqueous dispersion of amphiphilic oligomers for oiling leather or skins wherein the dispersion contains anionically modified urethane fatty oligomers containing long-chain hydrocarbon fatty groups containing from 8 to 40 carbon atoms, together with salt-forming carboxylic acid groups, sulfonic acid groups and mixtures thereof, which form urethane fatty oligomers having an at least predominantly linear basic structure of the oligomer molecule.

Use of guerbet alcohols for preventing fatty spew on leather

Use of nonionic organic dialkyl compounds for preventing fatty spew on

The efficiency of chromium utilization in chrome tanning of hides to make leather is greatly improved by performing the preliminary neutralization of the acid tanning liquor in the presence of an aldehydo or keto acid, before conventional subsequent neutralization with an alkali aluminum silicate. Most preferably, a combination of glyoxylic acid and magnesium oxide is used for the preliminary neutralization.

Chrome tanning of leather with reduced waste of chromium

This invention is directed to an improved process of oiling and impregnating leather or pelts in which the leather or pelts are contacted with one or more oiling substances in an aqueous liquor, wherein the improvement comprises using an alkylolamide ether sulfate or phosphate of fatty acids of the formula

Process for the oiling and impregnation of leather and pelts

In the process of tanning for the production of leather comprising subjecting pickled uncured hides to the action of an aqueous liquor containing

Use of water-insoluble aluminosilicates in tanning process for the

In the process of tanning for the production of dressed fur skins comprising subjecting pickled fur skins to the action of an aqueous liquor containing tanning agents, the improvement which comprises adding to the pickling bath as sole tanning agent a water-insoluble aluminosilicate, containing bound water, of the formula

Water-insoluble aluminosilicates as tanning agents for the dressing of

In an improved process of tanning for the production of leather comprising subjecting pickled uncured hides to the action of an aqueous liquor containing (1) chemical tanning or pretanning agents and (2) auxiliary chemicals to tanning and recovering leather, the improvement consisting essentially of employing (i) a water-insoluble aluminosilicate, containing bound water, of the formula

Water-insoluble aluminosilicates in the manufacture of leather

In the process of tanning for the production of leather comprising subjecting uncured hides to the action of an aqueous liquor containing (1) chemical tanning agents, and (2) auxiliary chemicals to tanning and recovering leather, the improvement consisting of essentially of employing water-insoluble aluminosilicate, containing bound water of the formula

Water-insoluble alkali metal aluminosilicates and polycarboxylic acids

In the process of washing and cleaning rawhides and fur skins before tanning comprising subjecting rawhides and fur skins to the action of an aqueous solution containing (1) surface-active compounds selected from the group consisting of anionic surface-active compounds, nonionic surface-active compounds and mixtures thereof, (2) emulsifiable solvents for fats and (3) electrolytes, removing said aqueous solution, rinsing, and recovering washed and cleaned rawhides and fur skins, the improvement consisting essentially of employing a fine-particulate, water-insoluble alkali metal aluminosilicate, containing bound water, of the formula

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Leverkusen, Germany

Emil Ruscheinsky