Bayer Aktiengesellschaft

Agfa-gevaert Ag

Agfa Gevaert Nv

Lanxess Deutschland Gmbh

Heraeus Kulzer Gmbh

Heraeus Kulzer Gmbh & Co. Kg

Bayer Corporation

Agfa-gevaert

Other

Metzeler Kautschuk Gmbh

Ge Bayer Silicones Gmbh & Co. Kg

Agfa-gevaert Aktiengsellschaft

Wolfgang Podszun

Carlhans Suling

Jens Winkel

Michael Muller

Jurgen Reiners

Robert Horst Bloodworth

Olaf Halle

Werner Finger

Herman J Uytterhoeven

Michael Walkowiak

Ludger Heiliger

John W Goossens

Reinhold M Klipper

Frank Louwet

Geert H Defieuw

Daniel M Timmerman

Carl Casser

Werner Struver

Norbert Lui

Luc H Leenders

Bruno Bomer

Rainer Brandt

Holger Lutjens

Wolfgang Zarges

Pierre Vanhoorne

Hans-Hermann Schulz

Ronny De Clercq

David Bryan Harrison

Bodo Rehbold

Bernhard Leusner

Hans H Schulz

Kamelia Karlou-Eyrisch

Walter De Winter

Christian Lindner

Erich Klauke

Thomas Eckel

Marc Irene Van Damme

Heinrich Alberts

Uwe Priesnitz

Markus Mechtel

Gerhard Klein

Helmut Waniczek

Henricus Peerlings

Hans Schulze

Michael Wagner

David Zelmanovic

Eberhard Kuckert

Gunther Penners

Gunter Oppermann

Wolfgang Richter

Hans-Karl Soest

Roland F Beels

Werner Str&uuml;ver

Claudia Schmid

Gunther Hoffarth

Michael M Uller

Hermann Uytterhoeven

Karl-Heinz Kaesler

Joachim Kruger

Joan T Vermeersch

Dieter Wittmann

Hanns P Muller

Hans-Josef Laas

Karl-Erwin Piejko

Andreas Seidel

Hans-Dieter Block

Gunter Helling

Rolf Grosser

Walter Schafer

Josef Witte

Siegfried Korte

Michael Mager

Michael Negele

Carlo A Uyttendaele

Ottfried Schlak

Michael Schelhaas

Rainer Neumann

Heiko Herold

Walter Lange

Johan Kijlstra

Alfred Mitschker

Peter Schwabe

Roland Richter

Udo Herrmann

Axel Ingendoh

Walter Simm

Michael Grosse-Bley

Bruno Hees

Holger Ohst

Rudolf Wagner

Holger L&uuml;tjens

Robert Cyriel Van Haute

Michael Happ

Ulrich Litzinger

Lothar Feistel

Martin Grunwald

Robert Schmitz-Josten

Erik Asmussen

George L Dimotsis

Manfred Borgardt

The present invention relates to heat-stable anion exchangers based on at least one aromatic monomer and at least one crosslinker having structural elements of the general formula (I) where

Heat-stable anion exchangers

The present invention relates to mixtures of substances based on organopolysiloxane polyethers and at least one further substance or component, preferably a polymer obtained from aqueous suspension, particularly preferably crosslinked functionalized polystyrene polymer beads, and also to the use of such mixtures of substances based on organopolysiloxane polyether together with crosslinked functionalized polystyrene polymer beads as free-flowing ion exchangers or free-flowing adsorbers, particularly preferably free-flowing monodisperse or heterodisperse anion exchangers or cation exchangers, but also free-flowing mixtures of anion and cation exchangers.

Mixtures of substances

The present invention relates to novel ion exchangers comprising carboxyl groups and also &#x2014;(CH)NRRgroups having improved exchange kinetics and selectivity, a method for their production and also use thereof for the adsorption of metals, in particular arsenic, when these are additionally loaded with iron oxide/iron oxyhydroxide.

Chelate exchanger

The present invention relates to a method for the demineralization of water using a combination of a monodisperse cation filter operated as a lift bed and a monodisperse anion filter operated in the cocurrent flow procedure, and also devices which comprise such a lift bed in combination with at least one cocurrent flow filter and if appropriate a trickling degasser and/or a mixed-bed filter.

Method and apparatus for the demineralization of water

Process for preparing monodisperse weakly basic or optionally strongly basic anion exchangers of the poly(meth)acrylamide type, the ion exchangers themselves and their use.

Monodisperse anion exchangers

The present invention relates to a process for producing weakly acidic cation exchangers of the polymethacrylic acid type by alkaline saponification of a crosslinked copolymer of alkyl methacrylate and methacrylic acid.

Weakly acidic cation exchangers

The alkaline saponification of acrylonitrile bead polymers provides weakly acidic cation exchangers with little intrinsic color and with reduced residual nitrogen content if the saponification is begun at a temperature Tof from 70 to 120&#xb0; C. and, once a degree of saponification of at least 65% has been reached, is completed at a temperature Tof from 120 to 180&#xb0; C.

Process for the alkaline saponification of crosslinked acrylonitrile bead polymers

The present invention relates to novel crosslinked bead polymers having an average particle size of 1 to 1000 &#x3bc;m containing specific, halogen-free phosphorus compounds including triphenyl phosphate as the halogen-free phosphorus compound, and to a process for the production of these bead polymers and to the use thereof as flame retardants in thermoplastics.

Bead polymerizates containing halogen-free phosphourus compounds

A method for preparing encapsulated red phosphorus is disclosed. The method entails obtaining a material system that contains dispersed particulate red phosphorus having a mean particle size of 0.1 to 100 &#x3bc;m in an aqueous phase that comprise urea, formaldehyde and a water-soluble silicon dioxide precursor, adding to the material system a sufficient amount of acid to lower the pH to 0 to 5 and maintaining the resulting acidic system at a temperature of 80 to 120&#xb0; C. for a period longer than one hour. The encapsulated red phosphorus of the invention is suitable for using as a flame retarding agent for plastics molding compositions.

Microencapsulated red phosphorus

A method for microencapsulating red phosphorus in polymerized urea resorcinol formaldehyde resin is disclosed. The method entails (i) preparing an aqueous mixture containing urea, resorcinol and formaldehyde, (ii) adding hexamethylene tetramine and optionally water to the mixture to yield a stabilized mixture (iii) dispersing red phosphorus in the to the stabilized mixture (iv) adding acid to the reaction mixture, and (v) collecting the resulting encapsulated red phosphorus. The product is suitable as flame retarding agent in molding compositions.

Microencapsulation of red phosphorus

The invention relates to a process for preparing gel-type cation exchangers of high stability by sulfonation of crosslinked (meth)acrylic ester-containing bead polymers with sulfuric acid having a concentration of 90 to 95% in the absence of a swelling agent.

Process for preparing gel-type cation exchangers

Shaped bodies which release agrochemical active substances

The invention relates to crosslinked bead polymers doped with superparamagnetic iron oxide, to a process for the preparation of the bead polymers, and to the use thereof in nucleic acid diagnosis.

Superparamagnetic bead polymers

Isocyanates containing amino groups

Growing community of inventors

Koln, Germany

Wolfgang Podszun