Basf Aktiengesellschaft

Basf Se Corporation

Simon Champ

Marc Rudolf Jung

Rainer Blum

Roland Ettl

Simon Nord

Hans-Peter Hentze

Sven Holger Behrens

Hans-Peter Kaub

Ulrike Geissler

Norbert Mahr

Volker Braig

Oliver Koch

Marc Leduc

Guenther Grimm

Robert Chapman

Andreas Merkel

Knut Menke

Aqueous dispersions of polymers which obtained by free radical suspension polymerization or free radical miniemulsion polymerization of ethylenically unsaturated monomers in an oil-in-water emulsion whose disperse phase comprises at least one fluorescent dye dissolved in at least one ethylenically unsaturated monomer and has an average particle diameter of at least 1 &#x3bc;m, in the presence of at least one surface-active compound and at least 0.5% by weight, based on the monomers, of at least one hydrophobic, nonpolymerizable, organic compound, of a hydrophobic polymer of at least one C2- to C&#x2dc;-olefin having a molar mass Mw of up to 10000, of a siloxane having a molar mass Mw of up to 5000 and/or polystyrene having a molar mass Mw of up to 10000, and of the powders obtainable from these polymer dispersions in each case by drying and comprising at least one fluorescent dye for marking of materials.

Aqueous dispersions of polymers which comprise a fluorescent dye, process for their production and their use for marking materials

Aqueous dispersions of polymers which obtained by free radical suspension polymerization or free radical miniemulsion polymerization of ethylenically unsaturated monomers in an oil-in-water emulsion whose disperse phase comprises at least one fluorescent dye dissolved in at least one ethylenically unsaturated monomer and has an average particle diameter of at least 1&#x3bc;m, in the presence of at least one surface-active compound and at least 0.5% by weight, based on the monomers, of at least one hydrophobic, nonpolymerizable, organic compound, of a hydrophobic polymer of at least one C- to C-olefin having a molar mass Mof up to 10000, of a siloxane having a molar mass Mof up to 5000 and/or polystyrene having a molar mass Mof up to 10000, and of the powders obtainable from these polymer dispersions in each case by drying and comprising at least one fluorescent dye for marking of materials.

The use of solid materials based on synthetic polymers and/or biopolymers (A) in natural gas and mineral oil extraction technology. The solid materials are produced by solubilizing at least one synthetic polymer and/or biopolymer (A), or at least one synthetic polymer and/or biopolymer (A) and at least one additive (B), in at least one substantially anhydrous chaotropic liquid (C). The solution or dispersion (AC) or (ABC) is contacted with a liquid (D1) which is miscible with the chaotropic liquid (C), but in which at least the synthetic polymer and/or the biopolymer (A) are substantially insoluble, resulting in a phase (E). The chaotropic liquid (C) is removed from phase (E) to result in a gel (G), which is impregnated with a liquid (D2). The two liquids (D1) and (D2) are removed from the gel (G) by evaporating, producing a solid material based on synthetic polymer and/or biopolymer (A).

Method for producing solid materials on the basis of synthetic polymers and/or biopolymers and use thereof

Process for the production of paper, board and cardboard by draining a paper stock with sheet formation in the presence of a retention aid system comprising

Method for the production of paper, cardboard and card

Hydrophobically modified polymers containing vinylamine or ethylenimine units and obtainable by reacting

Hydrophobically modified polymers containing vinylamine or ethylenimine units, method for the production thereof, and their use as retention agents

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Ludwigshafen, Germany

Simon Champ