Hoechst Aktiengesellschaft

Aventis Corporation Gmbh

Gerhard Noltner

Gerd Reinhardt

Hanspeter Gethoffer

Frank Jaekel

Jurgen Cramer

Wilfried Schuler

Gunther R Schimmel

Georg Borchers

Hans-Peter Rieck

Peter Mischke

Alexander Tapper

Helmut Berenbold

Manfred Mayer

Wolfgang Strobel

Manfred Muller

Rudolf Lademann

Christoph Porz

Helmut Kramer

Eric Jacquinot

Johannes Hartel

Heinz Wendt

Stefan Heffels

Rudolf Nowack

Horst Oehme

The present invention relates to an apparatus for the uniform distribution of a small amount of liquid on bulk materials. The method is performed by spraying the liquid with at least one ultrasonic nozzle onto the bulk material, which is finely particulate. The spraying may occur before, during, or both before and during, mixing the particulate solid in a mixing apparatus. Dust may be significantly reduced by the apparatus of the instant invention, and the apparatus is useful for applying not only liquids, but emulsions, solutions, dispersions, or melts. The mixer may be mechanical or pneumatic.

Apparatus for the uniform distribution of a small amount of liquid on

The present invention relates to a process for the preparation of low-dust granules, which comprises applying an aqueous solution or suspension of a hydrate-forming compound to a particulate starting material, the particulate starting material being at a temperature below the transition temperature of the hydrate-forming compound during the application of the aqueous solution or suspension and the aqueous solution being at a temperature above the transition temperature, effecting granulation subsequently or simultaneously and, if desired, drying the granules obtained.

Process for the preparation of low-dust granules

The present invention relates to a process for the preparation of storage-stable granules essentially comprising a bleaching activator and an inorganic binder material, which comprises the process steps:

Granulated bleaching activators and their preparation

To prepare a compacted, granular sodium silicate having an SiO.sub.2 /Na.sub.2 O molar ratio of 1.7:1 to 4.1:1, sodium silicate having a median particle diameter of &lt;500 .mu.m is first mixed with a material increasing its hardness before being converted into pressed granules having particle sizes of 0.1 to 5 mm by compacting, comminution and screening.

Process for preparing granular sodium silicates

The present invention relates to stable granules comprising active substance, granulating auxiliary, enveloping substance and if appropriate additional components, wherein the enveloping substance in each case comprises

Stable granules for detergents, cleaning agents and disinfectants

Stable peroxycarboxylic acid granules composed essentially of (1) an imidoperoxycarboxylic acid or its salts of the formula ##STR1## in which A is a group of the formula ##STR2## n is the number 0, 1 or 2, R.sup.1 is hydrogen, chlorine, bromine, C.sub.1 -C.sub.20 -alkyl, C.sub.1 -C.sub.20 -alkenyl, aryl or alkylaryl,

Stable peroxycarboxylic acid granule comprising an imidoperoxycarboxylic

Stable peroxycarboxylic acid granules, consisting essentially of (1) an imidoperoxycarboxylic acid or a salt thereof of the formula ##STR1## wherein A is a group of the formulae ##STR2## n is the number 0, 1 or 2, R.sup.1 is hydrogen, chlorine, bromine, C.sub.1 -C.sub.20 -alkyl, C.sub.1 -C.sub.20 -alkenyl, aryl or alkylaryl,

Stable peroxycarboxylic acid granules

A pulverulant, dry bleach activator, in particular tetraacetylethylenediamine is first moistened with water and then mixed with a dry auxiliary, in particular, with Na carboxymethylcellulose. This mixture is then granulated.

Process for the preparation of a readily soluble bleach activator

The invention relates to a process for improving the processing properties of powdery polyolefins. It is endeavored by this process to obtain a polyolefin powder which can be processed on screw extruders to an almost bubble-free product. The polyolefin powder is heated to a temperature of between 40.degree. C. and its melting point and introduced into a gap between two gap-forming elements. In this gap, the powder is compressed with a pressure of from 0.1 to 10 t per cm of gap length, and the powder so compressed is then comminuted.

Process for improving the processing properties of powdery polyolefins

Granular potassium sorbate is continuously manufactured by spraying an aqueous potassium sorbate solution into or onto a bed of potassium sorbate particles fluidized by heated air.

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Frankfurt am Main, Germany

Gerhard Noltner