Basf Aktiengesellschaft

J&uuml;rgen Decker

Hubert Meixner

Norbert Mahr

Rainer Dyllick-Brenzinger

Hartwig Voss

Ulrich Steuerle

Martin R&uuml;benacker

Anton Negele

Dieter Zeller

J&uuml;rgen Tropsch

Gerhard Wagenblast

Dieter Hannu Boeckh

Rocco Paciello

Volker Schliephake

Wolfgang Paulus

Harald Keller

Anton Esser

Stefan Frenzel

Kristin Tiefensee

Michael Ehle

Heinz Friedrich Sutoris

J&uuml;rgen Schr&ouml;der

Thomas Jaworek

Edgar Zeller

Knut Oppenl&auml;nder

Michael R&ouml;per

G&uuml;nter Oetter

Klaus Lorenz

Martin Aus Dem Kahmen

Michael Zirnstein

Bernhard Geissler

Beate Ehle

Rainer Rahm

J&uuml;rgen Alfred Lux

Martin Gercke

J&uuml;rgen Bernbach

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

The present invention relates to acylated polymeric polyamines, to processes for their preparation, to their use, and to aqueous compositions which comprise these polyamines.

Acylated polymeric polyamines

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

An article having a metallic surface treated with polymeric complexing agent is described. Particularly suitable polymeric complexing agents are phosphonoalkylated polyethyleneimines and/or carboxyalkylated polyethyleneimines and/or vinylimidazole polymers. As a rule, the treated metallic surface forms the total inner surface or a part of the inner surface of a process apparatus or of a container. The surface is protected by the treatment, in particular from the adhesion of polymer.

Apparatus having a metallic surface protected from undesired deposition of polymer

Use of water-soluble polymers as biocides

The invention relates to a method for the production of aldehydes or aldehydes and alcohols by hydroformylation of olefins in the presence of a complexing catalyst homogeneously dissolved in a reaction mixture, containing a metal of Group VIIIa of the periodic table of the elements and a phosphorus-free, polydentate nitrogen compound suitable for complex formation as ligand at temperatures ranging from 50 to 100&deg; C. and pressures from 20 to 1,000 bar and recirculating the catalyst complex in the hydroformylation reaction, wherein a) derivatized polyamines are used that are substantially non-water soluble and suitable for complex formation and have a mean molecular weight of more than 1,000 Dalton and at least 10 nitrogen atoms; b) the catalyst complex remaining in the bottom of the distillation column and the excess ligands obtained from the reaction mixture are recirculated totally or partially in the hydroformylation once the hydroformylation reaction and the separation or partial separation by distillation of the aldehydes and the alcohols has been completed; c) continues or at least batchwise evacuation of at least part of the high boiler from the bottom of the distillation of the reaction mixture is then carried out.

Method for the production of aldehydes

The use of polymers containing &bgr;-hydroxyalkylvinylamine units, as obtainable by reacting polymers containing vinylamine units with epoxides of the formula

Use of polymers containing &bgr;-hydroxyalkylvinylamine units as biocides

Growing community of inventors

Speyer, Germany

Jürgen Decker

Growing community of inventors

Speyer, Germany

J&uuml;rgen Decker

Jürgen Decker