Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Akzo Nobel N.v.

Nalco Chemical Company

Leibniz-institut Fur Polymerforschung Dresden E.v.

Kemira Oyj

Werner Jaeger

Mathias Hahn

Christian Przybyla

Oliver Struck

Dirk Ruppelt

Achim Sieger

Jeffrey R Cramm

Arvid Zimmermann

Axel Sanner

Helmut B Witteler

John-Bryan Speakman

Volker Hildebrandt

Karl-Heinz Reichert

Wesley Lamar Whipple

André Laschewsky

Christian Drohmann

Bernd-Reiner Paulke

Bernd Paulke

Mandy Mende

Simona Schwarz

Katrin Zeitz

Karl Heinz Reichert

Andre Laschewsky

The invention relates to a process for preparing an aqueous polymer dispersion comprising reacting, in the presence of a polymeric cationic co-stabilizer (A), one or more monomers (m), and a polymer (B) of a monomer mixture comprising at least one monomer (x) having a primary, secondary or tertiary amine or amide group and at least one olefinic unsaturation, and, at least one cationic monomer (y) having at least one olefinic unsaturation. The invention also relates to a polymer dispersion, a process for preparing a polymeric stabilizer (C), a polymeric stabilizer (C) and a process for producing paper.

Polymer dispersion and process for preparing a polymer dispersion

The invention relates to a method for separating suspended solid materials from aqueous systems, in which the latter is mixed with a flocculant made of polymer colloidal particles with cationic surface charge and subsequently the flocculated material is separated from the aqueous system.

Method for separating suspended solid materials from aqueous systems with colloidal flocculants

The present invention relates to a water-soluble polymer dispersion comprising: a dispersed polymer made up of at least one water-soluble monomer A and at least one water-soluble cationic monomer B, at least one stabiliser C, and at least one cationic polyelectrolyte as co-stabiliser D. It also relates to a method of producing a polymer dispersion and to a paper-making process.

Water soluble-Polymer dispersion and method of producing a water-soluble polymer dispersion

The present invention relates to a process for preparing an aqueous polymer dispersion comprising: preparing a dispersant co-polymer of a monomer mixture (M) by polymerising the monomer mixture (M) in a reaction medium which is substantially free from organic solvents and/or substantially free from monomers which are not soluble in water, the monomer mixture (M) comprises at least one cationic vinyl monomer (m) and at least one monomer (m) which is tetrahydrofurfuryl acrylate, tetrahydrofurfuryl methacrylate, or a monomer of the general formula (I): wherein Ris hydrogen or methyl, Ris hydrogen or C-Calkyl, Ris hydrogen, C-Calkyl, phenyl, or benzyl, n=1 to 4, and x=1 to 50, and then, polymerising one or more water-soluble monomers (m) in an aqueous solution of a salt in the presence of the obtained dispersant polymer. The invention also relates to an aqueous polymer dispersion, use of the dispersion and a process for the production of paper.

Process for preparing a polymer dispersion

The present invention relates to quaternized polyamidoamines which have at least one structural unit of the formula VII  The invention also relates to the preparation of the quaternary polyamidoamines, to compositions which comprise these compounds, and to the use thereof for cosmetic and pharmaceutical purposes, and in the fields of crop protection and textile dyeing. The present invention also relates to the use of quaternized polyamidoamines of the ionene type as biostatic or biocide and thus also biocidal compositions based on quaternized polyamidoamines.

Quaternary polyamidoamines, the production thereof, corresponding agents and the use thereof

The present invention relates to a process for preparing an aqueous polymer dispersion comprising: preparing a dispersant co-polymer of a monomer mixture (M) by polymerising the monomer mixture (M) in a reaction medium which is substantially free from organic solvents and/or substantially free from monomers which are not soluble in water, the monomer mixture (M) comprises at least one cationic vinyl monomer (m) and at least one monomer (m) which is tetrahydrofurfuryl acrylate, tetrahydrofurfuryl methacrylate, or a monomer of the general formula (I): wherein Ris hydrogen or methyl, Ris hydrogen or C&#x2013;Calkyl, Ris hydrogen, C&#x2013;Calkyl, phenyl, or benzyl, n=1 to 4, and x=1 to 50, and then, polymerising one or more water-soluble monomers (m) in an aqueous solution of a salt in the presence of the obtained dispersant polymer. The invention also relates to an aqueous polymer dispersion, use of the dispersion and a process for the production of paper.

The invention is concerned with water soluble high-molecular weight quaternary ammonium graft polymer, wherein ammonium salt side chains are grafted onto a polyamine backbone under free radical conditions, and wherein the initiator system comprises a free radical-producing oxidizing agent and the polyamine backbone polymer.

Branched polyammonium compounds of high molecular weight and processes for producing said compounds

Process for producing dispersions of water-soluble vinyl polymers and

Branched water-soluble acrylamide copolymers of high molecular weight

Growing community of inventors

Kleinmachnow, Germany

Werner Jaeger