Henkel Kommanditgesellschaft Auf Aktien

Henkel Kommanditgesellschaft Auf Aktien (henkel Kgaa)

Martin Witthaus

Franz-Josef Carduck

Paul Schulz

Gunter Effey

Axel Drager

Suresh Majmudar

Herbert Saran, Deceased

Jochen Jacobs

Klaus Schumann

Wolfgang Gress

Karl Schwadtke

Herbert Reuter

Hubert Harth

Hans Kruse

Theodor Altenschopfer

Eduard Smulders

Manfred Dankowski

Edmund Schmadel

Edgar Koeppelmann

Herbert Saran

Bleaching agents in the form of granulates of uniform composition which contain

Granular bleach agent: solid aliphatic peroxy-carboxylic acid, inorganic

Free-flowing, particulate foam inhibitor concentrates, which suffer no loss of activity in admixture with surfactants or strong alkalis, are prepared by compacting a mixture of from 1 to 20% by weight of the foam inhibitor with 80 to 99% by weight of a water-soluble salt or salt mixture optionally containing blending aids and having a pH value in the form of a 1% aqueous solution of from 6 to 9.5 under elevated pressure and subsequently size-reducing the compactate to an average particle size of from 0.1 to 2 mm. The presssure applied to the mixture should not significantly exceed the pressure limit at which no further compaction occurs. In addition, the particle porosity, as measured by mercury porosimetry, should be below 10%. The foam inhibitors used are preferably paraffin hydrocarbons, organopolysiloxanes and mixtures thereof with finely-divided hydrophobic solids, particularly finely-divided silica.

Process for the production of free-flowing, stable foam inhibitor

To prepare a highly effective foam inhibitor mixture consisting of paraffin hydrocarbons, hydrophobicized silica and liquid paraffin hydrocarbons, a finely divided silica is dispersed in paraffin hydrocarbons melting above 40.degree. C. and reacted with alkyl trichlorosilanes wherein the alkyl groups contain from 4 to 22 carbon atoms.

Process for the production of a foam inhibitor mixture

A process for the production of tablet form detergent compositions is afforded, comprising:

Process for the production of tablet form detergent compositions

Lead and zinc cyanurates are known to be suitable as the active ingredients in corrosion inhibiting coating compositions. The invention provides a simplified method of preparing these compounds by reacting lead or zinc oxide with cyanuric acid in an aqueous paste mixture at a somewhat elevated temperature without requiring the presence of a catalyst while applying a shearing force to said paste mixture.

Process for the preparation of lead and zinc cyanurates

Coated granular bleach activators and a process for their preparation comprising spray drying an aqueous slurry containing 1 to 1.7 parts by weight of water per part of a mixtue of (A) a powdery bleach activator and (B) at least one water soluble cellulose ether, starch, or starch ether in a ratio of A:B of from 99:1 to 90:10. The process utilizes a current of a drying gas having an entrance temperature of 100.degree.-200.degree. C. and an exit temperature of 40.degree.-120.degree. C.

Method of making coated granular bleach activators by spray drying

In the production of a spray-dried detergent containing a silicone/silica mixture as an antifoaming agent, the aqueous silicone-free detergent slurry (A) is combined in the range of the spray nozzle or in the pressure line leading to the spray nozzle under conditions whereby substantial mixing is avoided in order to avoid loss of the antifoaming action, with an aqueous dispersion (B) which contains the liquid antifoaming silicone agent, which is present in a particle size of from 0.5 to 40 .mu.m, as well as a film-forming, high-molecular-weight polymer which is soluble or swellable in water, and which is suitable for the formation of microcapsules, preferably a cellulose ether. The microcapsules are formed during the combination of the mixture (A) with the dispersion (B) at the time of spraying, or in the dispersion itself, if electrolyte salts were added to the latter before spraying.

Method for the production of a suds-stabilized silicone-containing

This invention relates to a process for preparing bleach activator granulates comprising from about 90 to 98 percent by weight of bleach activator and from about 10 to 2 percent by weight of granulating adjuvant, based on the weight of the anhydrous components, which comprises the steps of:

Process for the preparation of a stable, readily soluble granulate with

A process and an apparatus for the continuous ozonization of unsaturated organic compounds in the presence of water, wherein

Apparatus for ozonizing unsaturated compounds

A process and an apparatus for the continuous ozonization of unsaturated organic compounds in the presence of water, wherein (a) the fresh charge mixture of unsaturated compounds to be ozonized is reacted in at least one first reactor in parallel flow with ozonic gas, which was previously used for ozonizing a previously partially ozonized charge mixture, and (b) simultaneously a previously partially ozonized charge mixture is reacted in at least one second reactor in parallel flow with fresh ozonic gas, and wherein, optionally, said at least two reactors contain at least two mixing sections for mixing the charged liquid and gaseous phases with each other where the hydraulic diameter of the mixing elements in the individual mixing section is reduced in the flow direction.

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Dusseldorf, Germany

Martin Witthaus