Basf Aktiengesellschaft

Basf Se Corporation

Solenis Technologies Cayman, L.p.

Hubert Meixner

Ulrich Steuerle

Rainer Dyllick-Brenzinger

Wolfgang Paulus

Beate Ehle

Wolfgang Reuther

Norbert Mahr

Martin R&uuml;benacker

J&uuml;rgen Decker

Friedrich Linhart

Anton Negele

Dieter Hannu Boeckh

Anton Esser

Andreas Stange

Christian Jehn-Rendu

Klaus Lorenz

Thomas Muehlenbernd

Jurgen Alfred Lux

Dietmar Monch

J&uuml;rgen Alfred Lux

Werner Gauweiler

Christopher Alan Gray

Peter Baumann

Antonius Moormann-Schmitz

Luis Miguel Sanchez Cerro

Rainer Scholz

Thomas Muhlenbernd

Heinrich Hartmann

Walter Denzinger

Rainer Blum

Hartwig Voss

Albert Hettche

Roland Ettl

Manfred Niessner

Stefan Frenzel

Michael Ehle

Claudia Nilz

Thomas Greindl

Günter Scherr

Primoz Lorencak

Rudolf Schuhmacher

Martin Ruebenacker

Martin Aus Dem Kahmen

Werner Auhorn

Jaroslav Melzer

Juergen Huff

Hartmut Kanter

Jürgen Weiser

Jens Utecht

Lukas Haeussling

J&uuml;rgen Huff

Bernd Dirks

Lukas H&auml;ussling

Jurgen Huff

Rainer Betz

Jürgen Decker

Martin Gercke

J&uuml;rgen Bernbach

Ellen Kr&uuml;ger

Matthias H&ouml;ne

Juergen Alfred Lux

Martin Rübenacker

Klaus-Dieter Gerber

Volker Konigstein

Lukas H{umlaut Over (a)}ussling

Thomas MüHLENBERND

Process for the Manufacture of Paper and Paperboard The present invention relates to a process of making paper or paperboard in which a cellulosic thin stock is provided and subjected to one or more shear stages and then drained and a moving screen to form a sheet which is dried, wherein the process employs a retention system which is applied to the thin stock, said retention system comprising as components i) a blend of different cationic polymers and ii) a microparticulate material, in which the blend of cationic polymers comprises, a) a cationic polymer having a charge density of from 0.5 and below 3 mEq per gram and a molar mass of greater than 700,000 Da, which cationic polymer is selected from polymers containing vinyl amine units and polyethylenimine, b) a cationic polymer having a charge density of below 3 mEq per gram and an intrinsic viscosity of at least 3 dl/g, wherein one of the components of the retention system is dosed into the thin stock after the final shearing stage and the other is dosed into the thin stock before the final shearing stage.

Process for the manufacture of paper and paperboard

The present invention relates to a process of making paper or paperboard in which a cellulosic thin stock is provided and subjected to one or more shear stages and then drained and a moving screen to form a sheet which is dried, wherein the process employs a retention system which is applied to the thin stock, said retention system comprising as components i) a blend of different cationic polymers and ii) a microparticulate material, in which the blend of cationic polymers comprises, a) a cationic polymer having a charge density of at least 3 mEq per gram and a molar mass of greater than 700,000 Da, b) a cationic polymer having a charge density of below 3 mEq per gram and an intrinsic viscosity of at least 3 dl/g, wherein one of the components of the retention system is dosed into the thin stock after the final shearing stage and the other is dosed into the thin stock before the final shearing stage.

Aqueous dispersions of water-soluble polymers of N-vinylcarboxamides contain, based on 100 parts of water,

Aqueous dispersions of water-soluble polymers of N-vinylcarboxamides, their preparation and their use

Aqueous dispersions of water-soluble polymers of N-vinyl carboxylic acid amides, method for the production and use thereof

Use of crosslinked nitrogenous compounds which are soluble or dispersible in water in detergents and cleaners

The invention relates to modified cationic polymers which can be obtained by reacting (a) water-soluble, polymeric compounds containing NH groups with (b) compounds which are at least bifunctional with regard to NH groups, which contain at least one alkyl radical or alkenyl radical having at least 8 C atoms, and which contain, as a functional group, a halohydrin, epoxide, carboxyl, chloroformate or isocyanate group or a halogen atom. The invention also relates to a method for producing the polymers by reacting the compounds of groups (a) and (b), and to the use of the modified cationic polymers during the production of paper as fixing agents for papermaking stock containing interfering substances.

Modified cationic polymers, their preparation and their use in papermaking

A process for fractionating water-soluble or water-dispersible amino-containing synthetic polymers having a broad molar mass distribution by ultrafiltration, wherein the polymer solution or dispersion to be fractionated is fed continuously into an ultrafiltration circulation with at least one ultrafiltration unit, and retentate having a narrower molar mass distribution and permeate are discharged continuously, in such a way that the ultrafiltration circulation is essentially in a steady state, the polymers obtainable by this process and their use.

Method for fractionation of water soluble or dispersible polymers containing amino groups with a broad molar mass distribution

Paper, board and cardboard having high dry strength are produced by the addition of cationic, anionic and/or amphoteric starch as dry strength agents to the paper stock and drainage of the paper stock with sheet formation in the presence of cationic polymers as retention aids for starch, and cationic polymeric retention aids are used for increasing the retention of dry strength agents comprising cationic, anionic and/or amphoteric starch in the production of paper, board and cardboard.

Method for producing high dry-strength paper, pulpboard and cardboard

Method for producing paper, paperboard and cardboard using an uncrosslinked fixing agent during paper stock draining

The invention relates to a method for producing water-soluble homopolymers and copolymers, comprising oligoalkylene-imine side chains of the general formula (I), wherein &lsqb;AI&rsqb; , m, Y and x have the definitions given in claim , by radical homopolymerisation or copolymerisation of monomers A of the general formula (II), wherein &lsqb;AI&rsqb; , m, n, Y and R have the definitions given in claim , in an aqueous reaction medium. The invention also relates to the homopolymers and copolymers obtained by this method and to their use as auxiliary agents in paper production.

Method for producing water-soluble polymers, comprising oligoalkylene-imine side chains

Detergency boosters for detergents

Paper, board and cardboard are produced from paper stocks which contain tacky impurities by the addition of surfactants and cationic polymers having a charge density of at least 1.5 meq/g (measured at pH 7) and a molar mass M,of the cationic polymers of at least 15,000 and drainage of the paper stocks with fixation of the tacky impurities in the paper produced.

Method for producing paper, pulpboard and cardboard

The use of an amine with an average pK,of from 1 to 14 as detergency booster, preferably in textile detergents, especially in color detergents, and detergent formulations containing these amines.

Amphiphilic graft copolymers are prepared by grafting a pre-formed graft base polymer comprising at least 5% by weight of units of formula (I)

Amphiphilic graft polymers based on graft bases containing n&mdash;vinylcarboxylic acid units, process for their preparation and their use

Washing power enhancer for detergents

Growing community of inventors

Ludwigshafen, Germany

Hubert Meixner