Evonik Degussa Gmbh

Evonik Stockhausen Gmbh

Stockhausen Gmbh

Evonik Operations Gmbh

Evonik Corporation

Harald Schmidt

Franck Furno

Mirko Walden

Michael Keup

Scott J Smith

Iqbal Ahmed

Armin Reimann

Rainer Teni

Peter Herbe

Ursula Nielinger

Brian King

Laurent Wattebled

Jörg Harren

Jörg Issberner

Markus Henn

Anne Ix-Mund

Thomas Haas

Uwe Dingerdissen

Thomas Tacke

Jan Christoph Pfeffer

Felix Müller

Jorg Harren

Christian Lettmann

Jörg Peggau

Florian Klasovsky

Stefanie Rinker

Michael Volland

Michiel Janssen

Nicolaas De Bruin

Roger Sheldon

Michael Rimbach

Jan Pfeffer

Dieter Oppenberg

The present invention relates to a water-absorbing composition comprising water-absorbing polymer structures, on the surface of which is at least one tannin fraction which has a number-average molecular weight, determined in accordance with the test method described herein, of at least 1,000 g/mol, which has a weight-average molecular weight, determined in accordance with the test method described herein, of at least 1,000 g/mol, or which is a hydrolysable gallotannin. The present invention also relates to a process for the preparation of a water-absorbing composition, the water-absorbing composition obtainable by this process, a composite, a process for the production of a composite, the composite obtainable by this process, chemical products, such as, for example, hygiene articles, the use of a water-absorbing composition or of a composite and the use of a tannin fraction.

Superabsorbent composition with tannins for odor control

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 superabsorber composition comprising The invention furthermore relates to a process for the preparation of a superabsorber composition, the superabsorber composition obtainable by this process, a composite comprising the superabsorber composition according to the invention, a process for the production of a composite, the composite obtainable by this process, the use of the superabsorber composition according to the invention in chemical products and chemical products comprising the superabsorber composition according to the invention or the composite according to the invention.

Preparation of highly permeable, superabsorbent polymer structures

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.

The present invention generally relates to a method for the production of a superabsorbent composition comprising the process steps: The present invention also relates to a superabsorbent composition obtainable according to this method, a particulate superabsorbent composition and a composite, a sanitary article core and a sanitary item, furthermore chemical products and also the use of this superabsorbent composition in chemical products.

Biodegradable superabsorbent polymer composition with good absorption and retention properties

The invention relates generally to an odor-absorbing superabsorbing composition, a process for production of an odor-absorbing superabsorbing composition, a composite comprising an odor-absorbing superabsorbing composition, a hygiene article comprising a composite, chemical products comprising or based on an odor-absorbing superabsorbing composition or a composite, as well as the use of an odor-absorbing superabsorbing composition or of a composite in chemical products.

Deodorizing super-absorbent composition

The invention relates to a method for producing 2,6-dioxabicyclo-(3.3.0)-octane-4,8-dione (I), comprising the oxidation of dianhydrohexitols (II-IV), or of corresponding hydroxy ketones, with an oxygen-containing gas in the presence of a catalyst composition, the reaction proceeding without the addition of halogen sources.

Method for producing 2,6-dioxabicyclo-(3.3.0)-octane-4,8-dione

A water-absorbing polymer structure is disclosed, whose surface has been brought into contact with a combination of a metal salt and an oxide of a metal. The invention also relates to a process for treating the surface of water-absorbing polymer structures whereby the surface of water-absorbing polymer structures is brought into contact with a combination of a metal salt and an oxide of a metal at a temperature of from about 50 to about 300&#xb0; C. The present invention further relates to the water-absorbing polymer structures obtainable by this process, a composite comprising a water-absorbing polymer structure and a substrate, chemical products such as foams and fibers comprising water-absorbing polymer structures or a composite, and the use of a combination of an oxide of a metal and of a metal salt for treatment of the surface of super-absorbing polymer structures.

Water-absorbing polymer structure with improved absorption properties

The invention relates to absorptive, crosslinked polymeric compositions that are based on partly neutralized, monoethylenically unsaturated monomer carrying acid groups wherein the absorptive, crosslinked polymeric composition further includes an antioxidant and is color stable.

Superabsorbent polymer compositions having color stability

The present invention relates to a process for production of water-absorbing polymer structures comprising the process steps of providing an untreated, water-absorbing polymer structure (Pu) with a retention of at least about 35 g/g; and bringing this water-absorbing untreated polymer structure (Pu) into contact with a permeability-increasing agent. The invention further relates to the water-absorbing polymer structures obtainable by this process, water-absorbing polymer structures, a composite, a process for production of a composite, a composite obtainable by this process, chemical products comprising water-absorbing polymer structures or a composite as well as the use of water-absorbing polymer structures or of the composite in chemical products.

Water-absorbing polymer structures with improved absorption properties

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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Tonisvorst, Germany

Harald Schmidt