Basf Aktiengesellschaft

Cassella Aktiengesellschaft

Basf Se Corporation

Hoechst Aktiengesellschaft

The Procter Gamble Company

Dresser Industries, Inc.

Basf Corporation

Societe Francaise Hoechst

Cassella

Ulrich Riegel

Thomas Daniel

Mark Elliott

Matthias Weismantel

Friedrich Engelhardt

Fritz Engelhardt

Dieter Hermeling

Reinhold Schwalm

Volker Frenz

Norbert Herfert

Stefan Bruhns

Hans-Jerg Kleiner

Martin Hille

Axel Meyer

Frank Dietsche

Joachim Gersdorf

Markus Braun

Thomas Gieger

Mattias Schmidt

Rüdiger Funk

Klemens Massonne

Renae Dianna Fossum

Michael A Mitchell

Karl Haeberle

Jean-Philippe Marie Autran

Uwe Stueven

Paul Mallo

Stephen Allen Goldman

Klaus Kuhlein

Jürgen Schröder

Thomas Jaworek

Gerlinde Ebert

Wilfried Heide

Walter Dursch

Robin Lynn McKiernan

Steffen Piesch

Volker Braig

Martin Wendker

Jurgen Grosse

Michaela Monika Czupik

Wilhelm Adam

Werner Gohla

Karl Haberle

Uwe Stuven

Heinz Wittkus

Kai Michael Exner

Gustav Remmel

Michael Wessling

R&uuml;diger Funk

Hanss-Jerg Kleiner

Jeffery C Dawson

Helmut Klotzsche

Andreas Popp

Anthony R Reed

Sigmar Von Halasz

Detlev Seip

Michael De Marco

Manfred Mayer

Werner Lotz

Ulrich Kussmaul

Kuno Reh

Jurgen Kuhlwein

Yvonne Hagen

Karl Häberle

Hermann Becker

Rainer Greve

Thomas H Majette

Gerd Gobel

Ubbo Von Oehsen

Helmut Croon

Wolfgang Friede

William E Volz

Georg W Eckhardt

Curt A Wagner

Renate Konrad

James Hill

Wolf-Dieter Muller

Ferdinand Angerer

R Udiger Funk

Michael Mitchell

Bruno Johannes Ehrnsperger

Mark Bsc Elliot

Mark Elliot

James Scott Madsen

A process for producing water-absorbing polymer particles with high free swell rate and high permeability by polymerization of an aqueous monomer solution or suspension to give an aqueous polymer gel, wherein a thermal blowing agent essentially free of inorganic acid anions is mixed into the polymer gel, and subsequent thermal drying of the polymer gel.

Water-absorbing polymer particles with high free swell rate and high permeability

The present invention relates to a water absorbing material obtainable by a process comprising the steps of bringing particles of a non surface-crosslinked water-absorbing polymer in contact with

Water-absorbing polymeric particles and method for the production thereof

A mixture of superabsorbents having differing surface postcrosslinking, more particularly a mixture of differingly surface-postcrosslinked sieve cuts of a base polymer, exhibits improved absorption and retention over a unitarily surface-postcrosslinked superabsorbent.

Mixture of surface postcrosslinked superabsorbers with different surface postcrosslinking

A process for producing water-absorbing polymer particles by polymerizing an aqueous monomer solution in a kneader having at least two shafts in axially parallel rotation, wherein the reaction mixture is transported in axial direction and the region at the start of the kneader is trace-heated.

Process for producing water-absorbing polymer particles

The invention relates to hydrogels capable of absorbing aqueous fluids, which hydrogels are produced by polymerization of olefinically unsaturated carboxylic acids or their derivatives. The hydrogels are characterized in that before, during or after the polymerization reaction and before drying a silicic acid alkali salt of the general formula (I) MO&#xd7;nSiOis added to the polymerization reaction mixture. In said formula M is an alkali metal and n is a number between 0.5 and 4. The hydrogel obtained in this way is then dried at an elevated temperature. The invention also relates to a method for producing said hydrogels and to their use for absorbing aqueous fluids.

Hydrogels absorbing aqueous fluids

Absorbent structures comprising vacuum-treated (optionally coated) post-crosslinked water-absorbing polymeric particles, obtainable by vacuum-treating and optionally plasma-treating post-crosslinked water-absorbent polymeric particles (that may optionally be coated), the resulting vacuum-treated post-crosslinked water-absorbing polymeric particles having an improved absorption, whilst having good gel bed permeability.

Absorbent structures comprising post-crosslinked water-absorbent articles

Water-absorbing polymeric particles are produced by polymerizing a monomer solution or suspension comprising at least one unsaturated carboxylic acid and at least one hydroquinone monoether, and coating the polymeric particles with at least one salt of a tervalent metal cation of a carboxylic acid and/or at least one basic salt of a tervalent metal cation.

Method for producing white and color-stable water-absorbing polymer particles having high absorbency and high saline flow conductivity

The present invention relates to an absorbent structure suitable in, or being an adult or infant diaper or feminine hygiene article, comprising a water-absorbing material comprising water-absorbing particles that comprise a film coating, comprising an elastic film-forming polymer and an antioxidant. The invention also relates to an absorbent structure comprising a water absorbent material obtainable by a process of:

Absorbent structure with improved water-absorbing material comprising polyurethane, coalescing aid and antioxidant

The invention concerns a process for producing water-absorbing polymer, which comprises a base polymer A being mixed with a first aqueous solution B of at least one surface postcrosslinker and a second aqueous solution C of at least one polyvalent cation and thermally treated, wherein said base polymer A is based on at least 50% neutralized acid-functional monomer and said solutions B and C are metered wholly or partly concurrently through separate nozzles whereby a water-absorbing polymer having a high saline flow conductivity value is obtained.

Postcrosslinking of water-absorbing polymers

The present invention relates to an absorbent structure suitable in, or being an adult or infant diaper or feminine hygiene article, comprising a water-absorbing material comprising water-absorbing particles that comprise a film coating, comprising an elastic film-forming polymer and a coalescing agent. The invention also relates to an absorbent structure comprising a water absorbent material obtainable by a process of:

Absorbent structure with improved water-absorbing material

The present invention relates to a process for producing water-absorbing polymeric particles by polymerizing a monomer solution, which comprises removing the polymer gel from the reactor when the gel temperature is at least 50&#xb0; C. and the monomer conversion is not more than 90 mol %, and also to a process for producing hygiene articles.

Production of water-absorbing polymeric particles

Swellable hydrogel-forming polymers having high permeability Swellable hydrogel-forming polymer comprising at least one hydrophilic polymer of dendritic structure and at least one water-insoluble phosphate, a process for preparing the swellable hydrogel-forming polymer and also its use in hygiene articles.

Swellable hydrogel-forming polymers having high permeability

The invention concerns water-absorbing polymeric particles possessing high saline flow conductivity in the swollen state which comprise insoluble metal sulfates as synergistic fillers, and also a process for their production and their use.

Insoluble metal sulfates in water absorbing polymeric particles

Growing community of inventors

Landstuhl, Germany

Ulrich Riegel