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Basf Corporation

Robert Heinz

Alexander Hauk

Stefan Gropp

Anna Valeska Lohmann

Otto Machhammer

Klaus Muehlbach

Lawrence Shore

Axel Gottschalk

Robert Weiss

Carola Hedtmann-Rein

Karl Sommer

Ramail Matlin

Gerd Diebold

Robert Rühle

Dieter Feuerstein

Rüdiger Schmitt

Richard Baur

Christian Schade

Wolfgang Trieselt

Werner Bertleff

Johannes Perner

Albert Hettche

Thomas Heidenfelder

Michael Klemens Mueller

Hans-Peter Harz

Frank Runge

Joerg Erbes

Hans-Ulrich Wekel

Folker Ruchatz

Michael Schoenherr

Gerhard Lange

Bryan Cooper

Tanja Seebeck

Tobias Kortekamp

Jörg Erbes

Cecile Schneider

Peter Palm

Angela Ulzhöfer

Lars Kissau

Angela Ulzhoefer

Volker Buehler

Bernhard Linner

Frank Mrzena

Werner Schuster

Friedbert Hofmann

Ulrich Eidelsburger

Thekla B&ouml;rs

Thomas Keller

Bruno Käsler

Ulrich Bröckel

Michael Klemens MÜLLER

The present invention relates to a process for drying particulate polymers, comprising the steps of:  The present invention further relates to a process for working up particulate polymers.

Method for drying particulate polymers

The invention relates to a method for producing and using a solid sodium diformate having a high formic acid content, to the use thereof in animal foods in the form of an acidifier, preservatives, ensilage auxiliary agents, fertilizers, and a growth and productivity-stimulating agent and the inventive animal food additives containing sodium diformate.

Sodium diformate production and use

A process for the preparation of a spray-dried powder containing at least one glycine-N,N-diacetic acid compound of a formula MOOC&#x2014;CHR&#x2014;N(CHCOOM), where R is a C-alkyl and M is an alkali metal, the process including: preparing an aqueous solution containing the glycine-N,N-diacetic acid compound; concurrently passing the aqueous solution and air into a spray-drying apparatus; atomizing the aqueous solution by feeding the aqueous solution onto a rotating disk or by compressing the aqueous solution with a pump to a pressure of &#x2267;20 bar absolute, to obtain fine liquid droplets; and drying the droplets, to obtain the spray-dried powder, where a temperature gradient between the aqueous solution and the air is in a range from 70 to 350&#xb0; C., and a content of the glycine-N,N-diacetic acid compound in the aqueous solution is &#x2267;84% by weight, based on a total weight of the dry mass.

Process for the preparation of a spray powder comprising one or more glycine-N,N-diacetic acid derivatives and use of the spray powder for producing compression agglomerates

A method for recovering catalytic elements from a fuel cell membrane electrode assembly is provided. The method includes converting the membrane electrode assembly into a particulate material, wetting the particulate material, forming a slurry comprising the wetted particulate material and an acid leachate adapted to dissolve at least one of the catalytic elements into a soluble catalytic element salt, separating the slurry into a depleted particulate material and a supernatant containing the catalytic element salt, and washing the depleted particulate material to remove any catalytic element salt retained within pores in the depleted particulate material.

Method for recovering catalytic elements from fuel cell membrane electrode assemblies

The present invention relates to a process for producing a solid sodium diformate preparation having a formic acid content of at least 35% by weight based on the total weight of sodium diformate preparation, in which, at elevated temperature, an aqueous solution (E) is produced which comprises sodium formate and formic acid in a molar ratio of HCOOH:HCOONa of greater than 1.5:1 and which has a molar ratio of HCOOH:HO of at least 1.1:1, the aqueous solution (E) is brought to crystallization to obtain a solid phase (F) and a mother liquor (G), and the solid phase (F) is separated off from the mother liquor (G),

Production of sodium diformate

A method is provided for recovering a catalytic element from a fuel cell membrane electrode assembly. The method includes grinding the membrane electrode assembly into a powder, extracting the catalytic element by forming a slurry comprising the powder and an acid leachate adapted to dissolve the catalytic element into a soluble salt, and separating the slurry into a depleted powder and a supernatant containing the catalytic element salt. The depleted powder is washed to remove any catalytic element salt retained within pores in the depleted powder and the catalytic element is purified from the salt.

Efficient process for previous metal recovery from cell membrane electrode assemblies

Dry microorganism cultures comprising at least one microorganism species in carrier-bound form are present in the form of particles which a) have a particle size of at least about 0.1 mm and b) are compressed; processes for preparing dry microorganism cultures and their use for preparing foodstuffs and feedstuffs are also claimed.

Dried microorganism cultures and method for producing same

Granular materials are obtainable by pressing mixtures of at least one pulverulent, rheology-modifying, carboxyl-containing polymer as main component and at least one oil-soluble component.

Granulates for cosmetic and pharmaceutical preparations

The invention relates to the use of crosslinked polyvinylpyrrolidone as an additive to compact, particulate detergents and cleansers for the purpose of increasing the rate of disintegration thereof when brought into contact with water, to the particles of crosslinked polyvinylpyrrolidone having a particle size of from 50 to 400 &mgr;m, to a process for the preparation of the compact, particulate detergents and cleansers, and also to the compact, particulate detergents and cleansers themselves.

Use of crosslinked polyvinylpyrrolidone to increase the rate of disintegration of compact particular detergents and cleaners

In order to prepare thermoplastic molding materials of

Preparation of polyphenylene ether/polyamide molding materials

In order to prepare thermoplastic molding materials from pulverulent polyphenylene ethers and aromatic vinyl polymers by melt extrusion, the pulverulent polyphenylene ether is first of all compacted and/or sintered under pressure and if necessary with the addition of heat, preferably under a pressure corresponding to a nip pressure of from 1 to 100 kN/cm, to form a porous compact. The compact is then fed in the form of agglomerates having a particle size of from about 0.5 mm to about 20 mm into an extruder or the like, mixed with the aromatic vinyl polymer and if desired further components, and melted. In this way the proportion of the fines in the polyphenylene ether is considerably reduced, with the result that there is virtually no further danger of dust explosions. Further advantages include improved ease of metering and reduced electrostatic charge of the agglomerates. The extruded molding materials have good mechanical properties and also high thermal stability.

Preparation of thermoplastic molding materials based on pulverulent

Ascorbic acid granules for direct tableting are prepared by the compacting method, wherein the ascorbic acid in the form of crystals or crystal fragments, of which not more than 40% by weight have a longest particle diameter of less than 50 .mu.m and not more than 15% by weight have a longest particle diameter greater than 500 .mu.m, and as a mixture with from 0.8 to 8% by weight of soluble polyvinylpyrrolidone having a water content of from 0.3 to 5% is compacted in a conventional manner, and the product is comminuted.

Preparation of ascorbic acid granules

A granular bleaching activator for use in a detergent or bleach, which has particles which have a size of from 0.5 to 3 mm and are composed of

Granular bleaching activator

A roller press comprising a drivable pair of rollers with a defined nip between these, one or more stuffing screws, associated with the nip, for feeding the material to be granulated to the nip, and a plate, movable in the direction of the screw axis, on which plate the screw and drive are fixed and a pin which can be brought up against a stationary load cell is held.

Roller press for the production of granules or moldings

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Ludwigshafen, Germany

Robert Heinz