Basf Se Corporation

Basf Aktiengesellschaft

Basf Corporation

Dennis Lösch

Marco Krüger

Matthias Weismantel

Wilfried Heide

Stefan Blei

Uwe Stueven

Volker Seidl

Annemarie Hillebrecht

Carolin Nadine Dücker

Rüdiger Funk

Philippe Desbois

Achim Stammer

Alexej Michailovski

Robert Bayer

Imme Domke

Andreas Daiss

Reinhold Rieger

Stephan Deuerlein

Stefan Bruhns

Piyada Charoensirisomboon

Antje Ziemer

Volker Frenz

Martin Beck

Christian Hubert Weidl

Igor Shishkov

Samantha Champ

Christian Eichholz

Mohammed Abboud

Asif Karim

Thilo Krebs

David F Blackwood

Markus Tönnessen

Oliver Gampfer

Michael Heeger

Volker Spindler

Dieter Ehnes

Dieter Reimer

Norbert Gmähle

Herbert Römer

A process for preparing water-absorbing polymer beads by polymerizing droplets comprising at least one monomer in a gas phase surrounding the droplets, the droplets being obtained by enveloping a first monomer solution with a second monomer solution and polymerizing the second monomer solution and polymerizing to give a more highly crosslinked polymer than the first monomer solution.

Method for the production of absorbent polymer particles by polymerizing drops of a monomer solution

The present invention relates to an apparatus for the separation of magnetic constituents from a dispersion comprising these magnetic constituents and nonmagnetic constituents, comprising at least one loop-like canal () through which a dispersion flows having at least two inlets () and at least two outlets (), further comprising at least one magnet () that is moveable alongside the canal (), wherein the canal () is arranged relative to gravity in a way that nonmagnetic constituents are assisted to go into at least the one first outlet () (stream I) by sedimentation and by the current of the dispersion and magnetic constituents are forced into at least one second outlet () (stream II) by magnetic force against a current of flushing water. Furthermore, the present invention relates to a process for the separation of magnetic constituents from a dispersion comprising these magnetic constituents and nonmagnetic constituents.

Apparatus for continuous separation of magnetic constituents and cleaning of magnetic fraction

The invention relates to a process for preparing polymers from monomers and/or oligomers by adding a liquid comprising the monomers and/or oligomers dropwise to a continuous liquid phase in a reactor, the continuous liquid phase being immiscible with the liquid comprising the monomers and/or oligomers, and the monomers and/or oligomers reacting in the continuous liquid phase to give the polymer. The liquid comprising the monomers and/or oligomers is shaped to droplets outside the continuous liquid phase, which are subsequently introduced into the continuous liquid phase. The invention further relates to a reactor for performing the process, comprising a tube through which a continuous liquid phase flows, and means of generating droplets, the means of generating droplets being arranged such that the droplets are generated outside the continuous liquid phase and then introduced into the continuous liquid phase.

Method for producing polymers and reactor for carrying out said method

A process for producing polymer particles by polymerizing liquid droplets in a gas phase surrounding the droplets, said droplets comprising at least one monomer and being coated with particulate solids during the polymerization.

Method for producing polymer particles by the polymerization of liquid droplets in a gas phase

A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a surrounding gas phase, the resulting polymer particles having a water content of at least 5% by weight, and being aftertreated thermally in the fluidized state in the presence of steam at a temperature of at least 60&#xb0; C.

Method for producing water-absorbent polymer particles by the polymerization of droplets of a monomer solution

A process for preparing postcrosslinked water-absorbing polymer beads with high absorption by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets, wherein the solids content of the monomer solution is at least 35% by weight and the polymer beads have a mean diameter of at least 150 &#x3bc;m.

Method for producing post-cured water-absorbent polymer particles with a higher absorption by polymerizing droplets of a monomer solution

Water-absorbing polymeric particles are produced by spray polymerization of a monomer solution in a process wherein the monomer solution is spray dispensed and at least one crosslinker accumulates in the region of the droplet surface, and are useful in hygiene articles.

Production of polymers by spray polymerization

In a process for producing water-absorbing polymeric particles which comprises generating droplets comprising monomers, polymerizing the monomers in a heated gas phase surrounding the droplets and flowing the gas through the polymerization reactor, the temperature of the gas leaving the polymerization reactor is closed-loop controlled.

Regulation of a process for producing water-absorbing polymer particles in a heated gas phase

A process for producing polymer particles by polymerizing liquid droplets in a gas phase by metering a liquid comprising at least one monomer from at least one feed by means of a multitude of bores into a reaction chamber comprising the gas phase, wherein ratio of length of the feed to greatest diameter of the feed in the region of the multitude of bores is at least 10.

Method for producing polymer particles by the polymerization of fluid drops in a gas phase

A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a surrounding gas phase, wherein the monomer solution comprises at least 0.0002% by weight of oxygen and the oxygen content of the gas phase is at least 0.5% by volume.

Method for the production of water-absorbing polymer articles by polymerizing drops of a monomer solution

A process for preparing water-absorbing polymer beads by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets, the initiator being added to the monomer solution from 0.5 to 60 seconds before the droplets are generated.

Method for the production of water absorbent polymer particles by polymerizing drops of a monomer solution

Process for producing polymers by spray polymerization wherein the monomer solution is dispersed in a hydrophobic liquid, the use of the polymers for thickening liquids and also an apparatus for producing polymers by spray polymerization.

Method for producing polymers by dispersion polymerization

A process for producing water-absorbing polymeric particles by dropletization polymerization in the gas phase, which comprises drying the polymeric particles after the polymerization in a fluidized bed, the water-absorbing polymeric particles themselves, hygiene articles comprising these water-absorbing polymeric particles and also apparatus for implementing the process.

Production of water-absorbing polymeric particles by dropletization polymerization in the gas phase

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Altrip, Germany

Dennis Lösch