Basf Se Corporation

Asif Karim

Thomas Daniel

Marco Krüger

Wilfried Heide

Stefan Blei

Andreas Daiss

Oskar Stephan

Christophe Bauduin

Volker Braig

Dennis Lösch

Annemarie Hillebrecht

Carolin Nadine Dücker

Michael Heeger

Oliver Gampfer

Huanmin Wei

Dieter Ehnes

Dieter Reimer

Volker Spindler

The present invention relates to a process for producing water-absorbing polymer particles having an improved profile of properties, comprising thermal surface postcrosslinking in the presence of a salt of a polyvalent metal cation and a complexing anion and subsequent aftertreatment, the aftertreatment comprising coating with a salt of a polyvalent metal cation and a non-complexing anion, and remoisturization with further drying.

Method for producing water-absorbent polymer particles with improved properties

The invention relates to a process for producing water-absorbing polymer particles with high free swell rate, comprising the steps of polymerization, drying, grinding, classification and thermal surface postcrosslinking, remoisturization and drying again.

Process for producing water-absorbing polymer particles with high free swell rate

The invention relates to a method for monitoring the bending of a shaft, particularly a shaft in a mixing kneader, the shaft having a bearing at least on one side. In a first step, the deviation of the shaft from the radial position is measured on at least one position different from the bearing of the shaft. In a further step, a reference value is optionally determined from the measured deviation from the radial position. In a third step, the deviation from the radial position as measured in the first step or the reference value found in the second step is compared with a predetermined limit value.

Method for avoiding overloading of a shaft

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

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Mannheim, Germany

Asif Karim