Evonik Degussa Gmbh

Byk-chemie Gmbh

Stockhausen Gmbh

Evonik Operations Gmbh

Evonik Stockhausen Gmbh

Jörg Issberner

Jürgen Omeis

Hans-Peter Krimmer

Richard Mertens

Peter Werle

Ulrich Orth

René Nagelsdiek

Bernd Göbelt

Franck Furno

Harald Schmidt

Mirko Walden

Rainer Teni

Michael Keup

Jörg Harren

Armin Reimann

Peter Herbe

Ursula Nielinger

Alfred Bubat

Wojciech Jaunky

Albert Frank

Edgar Herrmann

Christoph Bruhn

Dagmar Kersten

Frank Tlauka

Tom Beckmann

Georg Werner

The present invention relates to a process for the preparation of water-absorbing polymer structures, comprising the following process steps: The invention relates also to the water-absorbing polymer structures obtainable by that process, to water-absorbing polymer structures, to a composite comprising a water-absorbing polymer structure and a substrate, to a process for the preparation of a composite, to the composite obtainable by that process, to chemical products, such as foams, molded articles and fibers comprising water-absorbing polymer structures or a composite, to the use of water-absorbing polymer structures or of a composite in chemical products and to the use of a salt in the treatment of the surface of water-absorbing polymer structures.

Water-absorbing polymer structure having improved permeability and absorption under pressure

The present invention relates to a process for the preparation of water-absorbing polymer structures, comprising the following process steps: I) providing an untreated, water-absorbing polymer structure; and II) bringing the untreated, water-absorbing polymer structure into contact with a salt comprising a divalent or higher-valent cation of a metal and at least one organic base as anion. The invention relates also to the water-absorbing polymer structures obtainable by that process, to water-absorbing polymer structures, to a composite comprising a water-absorbing polymer structure and a substrate, to a process for the preparation of a composite, to the composite obtainable by that process, to chemical products, such as foams, molded articles and fibers comprising water-absorbing polymer structures or a composite, to the use of water-absorbing polymer structures or of a composite in chemical products and to the use of a salt in the treatment of the surface of water-absorbing polymer structures.

A process for preparing a macromonomer by cationic ring-opening polymerization of at least one hydroxyoxetane with a terminally ethylenically unsaturated starter molecule free of allyl groups in a molar ratio (hydroxyoxetane(s):starter molecule) of (100:1) to (1:1) in the presence of at least one suitable catalyst; macromononomers obtainable therefrom and use thereof.

Terminally unsaturated, oxetane-based macromonomers, and methods for the production thereof

The invention relates to a method for continuously producing silanes and/or organopolysiloxanes by hydrosilylation, in which at least one compound (A) containing at least one carbon-carbon multiple bond is reacted with at least one compound (B) comprising at least one Si&#x2014;H functionality, wherein the reaction is carried out in a reaction mixing pump.

Method for continuous hydrosilylation

The present invention relates to a process for producing postcrosslinked water-absorbing polymeric formations, comprising the steps of contacting water-absorbing polymeric formations Pobtained by polymerization of ethylenically unsaturated acid-functional monomers or salts thereof in the presence of a crosslinker with a fluid Fcomprising a postcrosslinker,

Hydrolytically stable postcrosslinked superabsorbents

Water-absorbing, antimicrobial polymer particles comprising from about 1 to about 500 ppm, based on the particles, of a silver ion based on a silver salt, wherein the silver salt has a solubility product of at least about 1&#xd7;10(mol/l); at least about 10 wt. %, based on the polymer particle, of a water-absorbing polymer based on: (&#x3b1;1) from about 50 to about 99.99 wt. % polymerized, ethylenically unsaturated, acid groups-containing monomers or salts thereof, (&#x3b1;2) 0 to about 40 wt. % polymerized, mono-ethylenically unsaturated monomers polymerizable with &#x3b1;1, (&#x3b1;3) from about 0.01 to about 5 wt. %, preferably from about 0.1 to about 3 wt. % of one or more crosslinkers, (&#x3b1;4) 0 to about 30 wt. % of a water soluble polymer and (&#x3b1;5) 0 to about 20 wt. % of auxiliaries, the concentration of the silver ion based on a silver salt in at most about 90 vol. % of the particles is less than about 0.01 ppm.

Water-absorbing polymer particles delaying the decomposition of body fluids, composites comprising these and use thereof

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Willich-Neersen, Germany

Jörg Issberner