Basf Aktiengesellschaft

Basf Se Corporation

Basfaktiengesellschaft

Bernhard Schuler

Gerhard Auchter

Joachim Pakusch

Maximilian Angel

Matthias Gerst

Sebastian Roller

Erich Penzel

Gernot Franzmann

Johannes Dobbelaar

Wolfgang H&uuml;mmer

Eckehardt Wistuba

Oliver Wagner

Wolfgang Rohde

Joachim Roser

Rolf Dersch

Klemens Mathauer

Cheng-Le Zhao

Roelof Balk

Bernd Bruchmann

Rainer Dyllick-Brenzinger

Ekkehard Jahns

Harm Wiese

Dirk Lawrenz

Hermann Seyffer

Peter Keller

Dieter Urban

Johannes T&uuml;rk

Reinhard B&auml;cher

Rik Noordijk

David Johann Gilbert

Michael Mentges

Chung-Ji Tschang

Konrad Roschmann

Daniel Schoenfelder

David Christie

Roland Baumstark

Thomas Wirth

Marc Schroeder

Mubarik Mahmood Chowdhry

Burkhardt Dames

Bernd Stanger

Alexandre Terrenoire

Oliver Kuhn

Arno Tuchbreiter

Joerg Leuninger

Dietrich Hoffmann

Ralf Biastoch

Robert Wrazidlo

Elmar Schwarzenbach

Jurgen Hartmann

Walter Machtle

Georg Bobar

Peter Gleich

Berthold Sturm

Hideki Yamashita

Rodrigo Enrique Munizaga

David Redfern

Tilmann Korth

Gregory John Catterall

Harald Nissler

Ottokar Flocken

Michaela Reinsch

Roger Jan Van Sonsbeek

Cheeseng Yong

Jonathon Shane Allen

A process for concentrating desired particles containing a carrier-magnetic-separation with the following steps, providing a feedstock which contains the desired particles; adding hydrophobic magnetic particles to the feedstock which results in a loaded feedstock containing agglomerates of the magnetic particles and the desired particles or of the magnetic particles and the undesired material; separating the agglomerates from the loaded feedstock by a separation method which results in isolated agglomerates, breaking up the isolated agglomerates to obtain a suspension having magnetic particles in de-agglomerated form; and separating the magnetic particles from the suspension obtained in step d) by a separation method and provided that at least one separation method is a magnetic separation, and where the process has at least one further separation and where the further separation is s sorting, electric separation, screening, classification, gravity concentration, and flotation.

Combination of carrier-magnetic-separation and a further separation for mineral processing

The present invention relates to a process for separating at least one first material from a mixture comprising this at least one first material, at least one second material and at least one third material, which comprises at least the following steps: (A) providing a mixture comprising at least one first material, at least one second material, at least one third material and at least one hydrocarbon in an amount of more than 0.4% by weight, based on the sum of mixture, in the presence or 10 absence of at least one dispersion medium, (B) if appropriate, addition of at least one dispersion medium to the mixture obtained in step (A) in order to obtain a dispersion, (C) treatment of the dispersion from step (A) or (B) with at least one hydrophobic magnetic particle, so that the at least one first material and the at least one magnetic particle agglomerate, (D) separation of the adduct from step (C) from the mixture by application of a magnetic field, (E) if appropriate, dissociation of the adduct which has been separated off in step (D) in order to obtain the at least one first material and the at least one magnetic particle separately.

Separation of a mixture using magnetic carrier particles

The present invention provides aqueous emulsion polymers comprising

Aqueous emulsion polymers, their preparation and use

The invention also relates to a method to increase stain resistance and penetration resistance of aqueous coating compositions which method comprises providing a coating composition which contain at least one pigment, at least one film-forming polymer in the form of an aqueous polymer dispersion and at least one anionic surfactant, wherein the anionic surfactant comprises at least 85% by weight, preferably at least 90% by weight, more preferably at least 95% by weight, based on the total weight of anionic surfactant in the coating composition, of at least one anionic surfactant S, which is selected from semi-esters of sulfuric acid or phosphoric acid with an alcohol, which alcohol carries at least one alkyl radical having from 8 to 30 carbon atoms or an alkyl substituted phenyl radical wherein alkyl has from 4 to 30 carbon atoms and which alcohol may carry an oligo-C-C-alkylene-ether group provided that the number of repeating units in the oligo-C-C-alkylene-ether group is at most 15, or a salt thereof.

Method to increase resistance against stain penetration of aqueous coating compositions

The present invention relates to polymer dispersions which comprise highly branched polycarbonates, to a process for preparing them, and to their use.

Polymer dispersions containing highly branched polycarbonates

The present invention provides a process for preparing emulsion polymer particles of a hollow core/shell structure in the presence of a monomer plasticizer having a ceiling temperature less than 181&#xb0; C. wherein a polymerization inhibitor or reducing agent is not added to the aqueous emulsion of the core shell particles during the neutralization and swelling stage. The obtained core shell particles are useful in paints, paper coatings, foams, and cosmetics.

Method for producing emulsion polymers

The invention provides a process for preparing an aqueous polymer dispersion of a copolymer CP of at least two different monomers M1 and M2 by free-radical aqueous emulsion polymerization of the monomers M in the presence of at least one initiator, at least 80% of the monomers M and at least 75% of the initiator being supplied continuously to the polymerization reaction during its course, which comprises changing the rate at which the initiator is supplied to the polymerization reaction a number of times, or continuously, during the polymerization reaction. The invention further provides the polymer dispersions obtainable by this process, polymer powders prepared therefrom, and for the use of the dispersions and/or of the polymer powders to prepare pressure sensitive adhesives.

Method for producing aqueous polymer dispersions

Contact bonding adhesives

A process for preparing aqueous polymer dispersions comprises first of all subjecting ethylenically unsaturated monomers to free-radical aqueous emulsion polymerization to prepare an aqueous dispersion of a polymer 1 having a glass transition temperature Tg , then dissolving further, comparatively hard monomers in the dispersed particles of the polymer 1, and subsequently carrying out free-radical polymerization of said monomers dissolved in said particles.

Multistage aqueous dispersion of polymer particles having a soft core and hard shell

Pressure sensitive adhesives based on polymers of multistage construction

The present invention relates to a process for improving the stability of aqueous polymer dispersions to thermal and/or mechanical effects and comprises adding to said aqueous polymer dispersions at least one salt of a bis-C -C -alkyl ester of a sulfonated dicarboxylic acid having 4 to 8 carbon atoms.

Method for improved stability of aqueous polymer dispersions

Pressure sensitive materials based on a multistep constituted of polymerizates

A process for preparing aqueous polymer dispersions comprises first of all subjecting ethylenically unsaturated monomers to free-radical aqueous emulsion polymerization to prepare an aqueous dispersion of a polymer 1 having a glass transition temperature Tg,, then dissolving further, comparatively hard monomers in the dispersed particles of the polymer 1, and subsequently carrying out free-radical polymerization of the monomers dissolved in the particles.

Multistage process for preparing an aqueous dispersion of polymer particles having a soft core and hard shell

Pressure-sensitive materials with small amounts of styrene

Growing community of inventors

Mannheim, Germany

Bernhard Schuler