Henkel Kommanditgesellschaft Auf Aktien

Henkel Kommanditgesellschaft Auf Aktien (henkel Kgaa)

Henkel & Cie G.m.b.h.

Helmut Blum

Karl-Heinz Worms

Siglinde Hemmann

Christian Nitsch

Juergen Haerer

Peter Jeschke

Horst-Dieter Speckmann

Hinrich Moeller

Ulrich Pegelow

Willi Buchmeier

Bernd Mayer

Birgit Burg

Hans-Juergen Riebe

Holger Tesmann

Rainer Osberghaus

Willi Wuest

Rita Koester

Thomas Holderbaum

Harald Schnegelberger

Manfred Schmidt-Dunker

Christian Gloxhuber

Gunter Jakobi

Dieter Brodalla

Hans-Ulrich Hempel

Christian Heine

Henry Rossmaier

Cetin Nazikkol

Wolfgang Greb

Winfried Kirchhoff

Edmund Schmadel

Wolfgang Riedel

Frank Wiechmann

Bernt Krebs

Mark Duda

Joerg Reim

Dietrich Schmaehl

Hannsjoerg Sinn

Franz Wingen

Bernhard Keppler

Josef Steber

Siglinde Erpenbach

Heinz-Juergen Voelkel

Complexes of the transition metals cobalt, iron, copper, and ruthenium having at least one and preferably at least five ammonia ligands are used to activate peroxygen compounds in aqueous cleaning solutions for hard surfaces. Compositions preferably contain 0.0025% to 0.25 by weight of the activating complex.

Cleaning agent with oligoammine activator complexes for peroxide compounds

Transition metal ammine complexes as activators for peroxide compounds

Transition-metal complexes used as activators for peroxy compounds

In machine dishwashing using low-alkaline detergents, the protection of silver was to be guaranteed. This was achieved by using 3-amino-5-alkyl-1,2,4-triazoles and salts thereof as silver protectors in machine dishwashing detergents. In addition, the dishwashing detergents may contain bleaching agents and builders.

Machine dishwashing detergents with silver protection

A phosphate-free mildly alkaline, dishwashing detergent composition containing:

Mildly alkaline dishwashing detergents

A process for inhibiting the corrosion of silver in a dishwashing detergent solution by adding to the solution an inorganic redox-active substance.

Corrosion inhibitors for silver

Derivative of aminosuccinic acid as a complexing agent

Platinum complexes of the general formula I

Pharmaceutical preparations containing platinum complexes/phosphonic

3-R.sup.1 -3-oxoprop-1-ene-1,1-diphosphonic acids corresponding to the following general formula ##STR1## in which R.sup.1 is a tertiary substituted alkyl group, an optionally substituted cycloalkyl group, or an optionally substituted aryl or heteroaryl group, and

Olefinic diphosphonic acids, a process for their production, their use

In the process of sealing decorative anodized aluminum oxide coatings in hot aqueous solutions, superior results are obtained when the sealing solutions contain 1-phosphonopropane-1,2,3-tricarboxylic acid, 1,1-diphosphonopropane-2,3-dicarboxylic acid, and/or alkali metal and/or alkanolamine salts of these acids. The presence of these acids or their salts prevents the formation of bloom and allows shorter sealing times with equivalent quality, and the addition of as little as 1 ppm of aluminum ions to such solutions also prevents iridescence.

Process for sealing anodized aluminum

Hydroxyacetonitrile diphosphonic acid corresponding to the following general formula ##STR1## in which M represents H or a cation of a base, and salts thereof; to a process for their preparation comprising reacting 3-R.sup.1 -3-oxo-1-aminopropane-1,1-diphosphonic acids corresponding to the following general formula ##STR2## in which R.sup.1 is a tertiary substituted alkyl group, an optionally substituted cycloalkyl group or an optionally substituted aryl or heteroaryl radical, with nitrous acid, the secondary product R.sup.1 -COOH and unreacted starting material are separated off from the reaction mixture and the hydroxyacetonitrile diphosphonic acid is obtained in the form of a salt by addition of a base; and to the use of the above compounds as complexing agents and as thresholders.

Hydroxyacetonitrile diphosphonic acid, a process for its production, and

Oxa-alkane polyphosphonic acids corresponding to general formula (I) ##STR1## in which R.sup.1 is a C.sub.1 -C.sub.10 alkyl group, an optionally substituted C.sub.6 -C.sub.10 aryl group, a phenyl- or naphthylalkyl group, a group having the general formula ##STR2## or a group having the general formula ##STR3## R.sup.2 represents H or methyl, A represents the structural unit ##STR4## where n is an integer of from 1 to 20 and M represents H or the cation of a base, to the use of the above compounds as complexing agents and as thresholders, and to compositions containing one or more compounds of general formula (I).

Oxa-alkane polyphosphonic acids, their use as thresholders, and

A reaction medium of ethanol condensed with 1-20, most preferably 4-6 moles, of ethylene or propylene oxide per mole of ethanol greatly improves the practicality of the preparation of azacycloalkane-2,2-diphosphonic acids of the general formula I: ##STR1## where R means a hydrogen or a lower alkyl radical with from 1 to 3 carbon atoms, and n means an integer between 3 and 11, by phosphonylating the corresponding lactams with phosphonic acid and phosphorous trihalides in the presence of water.

Process for synthesis of azacycloalkane-2,2-diphosponic acids

3-Alkyl-3-oxo-1-aminopropane-1,1-diphosphonic acids and water-soluble salts thereof corresponding to the formula ##STR1## in which R.sup.1 represents an unbranched or branched C.sub.1 -C.sub.8 alkyl group, R.sup.2 and R.sup.3 independently of one another represent methyl or ethyl, and each M represents H or a cation of a water-soluble base, to a process for producing these compounds wherein oxonitriles corresponding to the formula: ##STR2## in which R.sup.1, R.sup.2 and R.sup.3 are as defined above, are reacted with mixtures of a phosphorus trihalide PX.sub.3, where X represents fluorine, chlorine or bromine, with phosphorous acid, the reaction mixture is hydrolyzed, and the reaction products are optionally converted into water-soluble salts; and to the use of the resulting compounds corresponding to general formula (III).

Diphosponylated oxonitriles, processes and uses therefor, and

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Duesseldorf, Germany

Helmut Blum