[Philipp Zacharias, Hermann Seyffer, Ilshat Gubaydullin, Harutyun Hanciogullari, Marc Bothe] DE,,Mannheim;DE,,Heidelberg;DE,,Ludwigshafen;DE,,Limburgerhof;DE,,Monsheim; As associative thickener obtainable by free radical polymerization, the preparation thereof and the use thereof in paper coating slips are described. The associative thickener is formed from (a) acid monomers selected from ethylenically unsaturated C3- to C8-carboxylic acids, (b) associative monomers of the general formula H2C═CR1—COO-(EO)n—(PO)m—R2, in which R1 is hydrogen or methyl, n is a number of at least two, m is a number from zero to 50, EO is an ethylene oxide group, PO is a propylene oxide group and R2 is a C8-C30-alkyl group or a C8-C30-alkaryl group, and (c) nonionic, copolymerizable monomers differing from a) and b), the reaction product having been reacted, after the polymerization, with initiators forming nonionic radicals.

[Axel Weiss, Marc Bothe, Rainer Nolte, Matthias Klausmann, Patrick Amrhein, Kenneth Landherr, Gerald Wildburg] DE,,Speyer;DE,,Limburgerhof;DE,,Limburgerhof;DE,,Ludwigshafen;DE,,Hochheim;DE,,Ludwigshafen;DE,,Speyer; The present invention relates to the production of a polymer powder with improved powder properties, and to its use as impact modifier for rigid polyvinyl chloride (PVC) applications. The impact modifier is composed of emulsion polymer particles which have a core-shell structure, where the shell is composed of a hard polymer and the core is composed of a soft, crosslinked rubber polymer.

[Loewe, Andreas, Bothe, Hans-Dieter, Freienstein, Heiko, Engelberg, Thomas, Luther, Marc] DE,70442 Stuttgart,Postfach 30 02 20;

[ELIZALDE, Oihana, SCHMITT, Michael, BOTHE, Marc] DE,67056 Ludwigshafen,;

[LOEWE ANDREAS, BOTHE HANS-DIETER, TRINH HOANG, FREIENSTEIN HEIKO, ENGELBERG THOMAS, LUTHER MARC] DE

[BOTHE, Marc, GERST, Matthias, LAUBENDER, Matthias]

[ALLMENDINGER, Markus, GUERIN MOREIRA, Andre, SCHÄDLER, Volker, BOTHE, Marc, RUCH, Joachim, EHRENSTEIN, Moritz]

[AXEL WEISS, CARMEN-ELENA CIMPEANU, FLORIAN BÜSCH, HEIKO DIEHL, HERMANN SEYFFER, INES PIETSCH, MARC BOTHE, PETER PREISHUBER-PFLÜGL] DE

[ELIZALDE, Oihana, SCHMITT, Michael, BOTHE, Marc] {67056 Ludwigshafen;DE(DE)(DE)}{B 7, 4 68159 Mannheim;DE(ES)(DE)}{Bachweg 9a 67549 Worms;DE(DE)(DE)}{Mainstr. 6 67117 Limburgerhof;DE(DE)(DE)} The invention relates to a method for treating surfaces. Said method is characterised in that the surfaces are treated with (a) at least one hydrophobic agent, (b) at least one cross-linked organic copolymer in a particle form, (c) at least one film-forming copolymer comprising epoxide groups, NH-CH2OH-groups or acetoacetyl groups, (d) optionally, one or several emulsifiers, and finally, dried after treating.

[BOTHE, Marc, GERST, Matthias, LAUBENDER, Matthias] {67056 Ludwigshafen;DE(DE)(DE)}{Mainstr. 6 67117 Limburgerhof;DE(DE)(DE)}{Herzogstrasse 85 67435 Neustadt;DE(DE)(DE)}{Gönheimer Weg 14 67105 Schifferstadt;DE(DE)(DE)} The invention relates to the use of an aqueous polymer dispersion containing methacrylic acid and N-methylol-acrylamide as a binding agent for the production of filter materials and for base paper for decorative foils.