Basf Se Corporation

Marco Krueger

Matthias Weismantel

Ruediger Funk

Karl Possemiers

Juergen Schroeder

Thomas Pfeiffer

Rene Callot

Juergen Freiberg

Jürgen Schröder

Robert Bayer

Joerg Erbes

Simon Gramlich

Rudolf Schliwa

Tobias Kortekamp

Cecile Schneider

Angela Ulzhoefer

Markus Steffen

Oliver Gampfer

Gerald Gruenewald

Alexandra Wiedemann

Markus Muehl

Stefan Muessig

Marc Andre Von Der Heydt

Uwe Stanitzek

A process for producing superabsorbent particles by polymerizing a monomer solution or suspension, comprising drying of the resultant aqueous polymer gel in an air circulation belt dryer, grinding, classifying, and optionally thermal surface postcrosslinking, wherein the aqueous polymer gel is introduced into the air circulation belt dryer by means of an oscillating conveyor belt and that guide devices are located at the edges of the conveyor belt.

Method for producing superabsorbent particles

A process for producing superabsorbent particles by polymerizing a monomer solution, comprising the steps of continuously polymerizing the monomer solution on the continuous belt of a belt reactor, comminuting the polymer gel obtained, rinsing the polymer gel obtained on the underside of the belt reactor into a separation unit with water, separating the polymer gel from the water in the separation unit and recycling the polymer gel into the comminution, wherein the polymer gel has a swelling capacity in water of at least 100 g/g, the dwell time of the polymer gel in the rinse water is less than 40 minutes, and the separation unit has openings with a clear width of at least 1 mm.

Method for the production of superabsorbents

A process for producing superabsorbent particles by polymerizing a monomer solution or suspension, comprising the steps of continuously preneutralizing a monomer while cooling and partly recycling the preneutralized monomer into the preneutralization, continuously heating the preneutralized monomer by means of a heat exchanger and continuously postneutralizing the heated monomer, wherein the monomer solution or suspension prior to entry into the polymerization reactor is at a temperature of 70 to 99° C. and the temperature of the heating medium used in the heat exchanger is less than 160° C.

Method for the production of superabsorbers

A process for producing superabsorbent particles, comprising drying of a polymer gel, removal of incompletely dried polymer particles, comminution of the polymer particles removed, recycling of the comminuted polymer particles and storage of the recycled polymer particles.

Method for producing super absorber particles

A process for producing superabsorbent particles by polymerizing a monomer solution or suspension, comprising drying of the resultant aqueous polymer gel in an air circulation belt drier, grinding, classifying, and optionally thermal surface postcrosslinking, wherein the aqueous polymer gel is introduced into the air circulation belt drier by means of an oscillating conveyor belt, the underside of the revolving conveyor belt is freed of adhering polymer gel by means of at least one stripper device, and the underside of the revolving conveyor belt is sprayed with water.

The invention relates to an apparatus for producing pulverulent poly(meth)acrylate, comprising a reactor for droplet polymerization having an apparatus for dropletization of a monomer solution for the preparation of the poly(meth)acrylate having holes through which the monomer solution is introduced, an addition point for a gas above the apparatus for dropletization, at least one gas withdrawal point on the circumference of the reactor, a fluidized bed and an apparatus for product discharge from the fluidized bed. The apparatus for product discharge comprises a discharge apparatus, with a backup segment () disposed above the discharge apparatus.

Device for producing poly(meth)acrylate in powder form

The invention relates to an apparatus for introduction of droplets into a reactor, comprising a holder for at least one dropletizer unit, where the dropletizer unit has a feed for a liquid to be dropletized and a dropletizer plate and the dropletizer plate has holes through which a liquid to be dropletized is introduced into the reactor, where the holder for the at least one dropletizer unit can be pushed into the reactor or pulled out of the reactor through an opening in the shell of the reactor. At least one rail is accommodated within the reactor and is used to guide the holder for the at least one dropletizer unit along it.

Apparatus for introduction of droplets into a reactor

The invention relates to a process for producing polyarylene ether beads from a polyarylene ether solution, comprising the steps of

Division of a polyarylene ether solution

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Mannheim, Germany

Marco Krueger