Evonik Stockhausen Gmbh

Evonik Degussa Gmbh

Evonik Corporation

Deb IP Limited

Stockhausen Gmbh

Evonik Superabsorber Gmbh

Evonik Operations Gmbh

Frank Loeker

Scott J Smith

Heinz Bremus

Stan McIntosh

Laurent Wattebled

Markus Frank

Petra Allef

Christoph Loick

Scott Smith

Christian Schmidt

Anne Ix-Mund

Nicolaas De Bruin

Rüdiger Gerlach

Thomas Mangen

Dirk Magolei

Udo Klapperich

Henry Rudolph

Dirk Paepen

Thomas Hoefges

Frank Soppe

Dirk Wagner

Franck Furno

Michael Azad

The present invention relates to an anti-stick processing aid for use in a process for producing water-absorbing polymers, comprising the steps of: i) mixing (&#x3b1;1) 0.1 to 99.999% by weight of polymerizable, ethylenically unsaturated monomers containing acid groups, or salts thereof, (&#x3b1;2) 0 to 70% by weight of monomers copolymerizable with (&#x3b1;1), (&#x3b1;3) 0.001 to 10% by weight of crosslinkers, (&#x3b1;4) 0 to 30% by weight of polymers, (&#x3b1;5) 0 to 80% by weight of water, and (&#x3b1;6) 0 to 20% by weight of assistants, (ii) free-radical polymerization with crosslinking to form a hydrogel polymer, (iii) drying the hydrogel polymer, (iv) grinding and sieving the hydrogel polymer, (v) surface postcrosslinking the hydrogel polymer and (vi) drying and finishing the water-absorbing polymer,wherein the anti-stick processing aid is used before and/or in steps (iii).

Anti-stick processing aids and use thereof in the production of water-absorbing particles

The invention relates to compositions containing at least 10 wt.-% of water in relation to the total composition, if required, one or more additional solvents, optionally one or more emollients, if necessary, one of more emulsifiers, one or more surfactants which are different from the emulsifiers. The compositions being characterized such that they contain 0.01-30 wt.-% of super absorbing particles in relation to the total composition, and to the use thereof as skin and hand cleaning means.

Skin and hand cleaning means containing super-absorbing particles

The present invention relates to a process for the production of water-absorbing polymer structures, comprising the process steps of providing of an aqueous monomer solution comprising a polymerizable, monoethylenically unsaturated monomer (&#x3b1;1) carrying acid groups or a salt thereof; free-radical polymerization of the aqueous monomer solution to give a polymer gel, drying of the optionally comminuted polymer gel to give water-absorbing polymer structures, and surface post-crosslinking of the optionally ground and sieved water-absorbing polymer structures, wherein a thermoplastic polymer is added to the aqueous monomer solution before process step ii) or during process step ii), preferably before process step ii), or II) the polymer gel after process step ii) and before process step iv) or during process step iv), preferably before process step iv), or III) the water-absorbing polymer structure after process step iv).

Water-absorbing polymer structures produced using polymer dispersions

The invention relates to absorptive, crosslinked polymers which are based on partly neutralized, monoethylenically unsaturated monomers carrying acid groups wherein the absorptive crosslinked polymer may be coated with a thermoplastic polymer, and have improved properties, in particular in respect of their capacity for transportation of liquids in the swollen state, and which has a high gel bed permeability and high centrifuge retention capacity.

Superabsorbent polymer with high permeability

The present invention relates to a process for producing a water-absorbent polysaccharide including the process steps of bringing into contact an uncrosslinked polysaccharide with a polyphosphate or a polyphosphoric acid as crosslinking agent in the presence of water to form a polysaccharide gel and crosslinking the polysaccharide gel. The invention further relates to a water-absorbent polysaccharide obtainable by this process, a water-absorbent polysaccharide, a composite, a process for producing a composite, a composite produced by this process, the use of the water-absorbent polysaccharides or of the composites as well as the use of polyphosphates.

Water-absorbing polymer

Water-absorbing polysaccharide and method for producing the same

A process for producing and a powdery water-absorbing polymers comprising: Also disclosed are a transport process, a composite, chemical products, and a use of a thermoplastic adhesive.

Powdery water-absorbing polymers with fine particles bound by thermoplastic adhesives

Water-absorbing polymer particles with thermoplastic coating

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Krefeld, Germany

Frank Loeker