Henkel Kommanditgesellschaft Auf Aktien

Henkel Kgaa

Hans-Herbert Friese

Friedrich Pieper

Uwe Ploog

Wolfgang Prinz

Bernd Fabry

Guenter Uphues

Ludwig Schieferstein

Emil Ruscheinsky

Gerhard Kaindl

Reinhard Bosse

Manfred Biermann

Horst Baumann

Rolf Tenhaef

Hermann Anzinger

Gunter Uphues

Wolf-Dieter Willmund

Jurgen Plapper

Michael Marschner

Horst Schulz

Rudolf Zauns

The invention concerns a process for the manufacture of surface-active sulfophosphoric-acid-(partial)-alkyl-esters and their alkali-, alkaline earth-, ammonium- and amine salts by the sulfonation of phosphoric acid esters and subsequent hydrolysis of the sultone intermediate stages formed.

Surface-active sulfophosphoric-acid-(partial)-alkyl-esters

A process for preparing surface-active, saturated sulfophosphoric acid-(partial)-alkyl esters and their alkali metal, alkaline earth, ammonium and/or amine salts by the sulfonation of saturated phosphoric acid-(partial)-alkyl esters and then hydrolysis of the sulfonated phosphoric acid esters formed.

Surface-active, saturated sulfophosphoric acid-(partial)-alkyl esters

Adhesion promoter for leather finishing

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

Sulfited fats prepared by oxidation of fats with oxygen-containing gas mixtures and simultaneous or subsequent sulfitation using alkali and/or ammonium hydrogen sulfites, wherein the fats used are mixtures containing

Sulfited fats as oiling agents for leather and skins

A method for imparting hydrophobicity and softness to leather and skins comprising treatment thereof with at least one sulfosuccinic acid monoamide of the formula ##STR1## wherein R and R' are, independently, H or a C.sub.12-24 alkyl, and

Oiling agents based on sulfosuccinic acid monoamides

Sulfited fats

A process for improving the adhesion of finishes to oiled and/or hydrophobicized leathers wherein oiled and/or hydrophobicized leathers are treated before prefinishing and/or in the prefinish with aqueous dispersions containing

Primer for leather finishes

A process for leather tanning having the improvement of imparting waterproof properties to the leather by incorporating a sulfosuccinic monoester in the fatliquor.

Method for producing waterproof leather

A leather fatliquoring agent and a process for its use in which the agent is a sulfosuccinic (C.sub.12-24 fatty residue) ester and an anionic or nonionic emulsifier. The agent is stable in the presence of tanning liquor electrolytes.

Leather fatliquoring agents combinable with tanning and retanning

A process for the sulfonation of certain fat and oil mixtures, the product of such process, and a method for using such product as a leather tanning stuffing agent, the certain fat and oil mixtures comprising (A) 20-80% by weight of at least one C.sub.8-24 -fatty acid glycerol ester having an iodine number above 20, and (B) the balance q.s. to 100% by weight of at least one C.sub.1-4 -aliphatic monoalcohol ester of a C.sub.8-24 -fatty acid having an iodine number of 50-100.

Sulfonation of fats and oils

A method and composition for fatliquoring during the leather and skin tanning process, in which an amphoteric surfactant is employed which is the condensation product of at least one C.sub.6-22 -fatty acid or corresponding ester with at least an aminoalkylalkanolamine followed by subsequent alkylation reaction with at least one vinylog compound.

Amphoteric fatliquoring composition

This invention relates to a process for producing waterproof leathers and skins by tanning, retanning, dyeing, stuffing, and fixing which is characterized in that, after tanning and, optionally, dyeing, stuffing agents (A) in the form of oxidized or oxidized and partly sulfonated long-chain hydrocarbons of waxes and impregnating agents (B) in the form of copolymers or from 60 to 95 mol percent of (meth) acrylic acid and from 5 to 40 mol percent of an ester, amide or nitrile of (meth) acrylic acid having a molecular weight of from 800 to 10,000 in salt form are successively used in the same bath, followed by acidification, fixing and finishing. The co-use of the impregnating agents (B) with the particular stuffing agents (A) results in much greater degree of resistance to water penetration than that obtained by the use of the stuffing agent (A), alone.

Process for the production of waterproof leathers and skins

This invention relates to a process for preparing sulfonated lubricating agents for leather and tanned furs consisting of the steps of:

Preparation of lubricating agents for leathers and furs

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

Growing community of inventors

Monheim, Germany

Hans-Herbert Friese