Basf Aktiengesellschaft

Other

Basf Se Corporation

Omya International Ag

Norbert Mahr

Hubert Meixner

Anton Negele

J&uuml;rgen Decker

Anton Esser

Rainer Blum

Stefan Frenzel

Andreas Stange

Martin Wendker

Dieter Zeller

Ralf Hemel

J&uuml;rgen Tropsch

Werner Gauweiler

Rocco Paciello

Rainer Dyllick-Brenzinger

Hartwig Voss

Friedrich Linhart

Kevin Ray Anderson

Roland Ettl

Wolfgang Schrof

Manfred Niessner

Knut Oppenlander

Juergen Schmidt-Thuemmes

Primoz Lorencak

Christoph Hamers

Volker Braig

Ulrich Steuerle

Edgar Zeller

Michael R&ouml;per

Martin Ruebenacker

Klaus Lorenz

Lawrence Edward Fosdick

Martin Aus Dem Kahmen

Martin R&uuml;benacker

Bernhard Geissler

Ki-Oh Hwang

Marc Leduc

John Thomas McDonald, Jr

Klaus Taeger

Simon Champ

Rudi Kroner

Ralf N&ouml;renberg

Guenther Grimm

Bernd Dirks

Rainer Scholz

Rudolf Lorz

Thierry Blum

Kurt Diehl

Heinrich Ullrich

Martin Gercke

Dogan Sahin Sivasligil

Sarah Veelaert

Martin Rübenacker

Matthias H&ouml;ne

Norbert Gispert

Dieter Meck

Hans-Jurgen Jatzek

Jürgen Schmidt-Thümmes

Process for the production of filler-containing papers and filler-containing paper products by addition of an aqueous suspension of at least one finely divided polymer-pigment hybrid to a paper stock and drainage of the paper stock with sheet formation, the polymer-pigment hybrid being obtainable by milling an aqueous suspension of at least one inorganic pigment in the presence of at least one binder and, if appropriate, by drying the aqueous suspension thus obtainable and redispersing the dried polymer-pigment hybrid in water, and the use of the polymer-pigment hybrids thus obtainable as a filler for the production of filler-containing paper or filler-containing paper products.

Polymer-pigment hybrids for use in papermaking

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

Paper, board and cardboard are produced by shearing the paper stock, adding a microparticle system comprising a cationic polymer and a finely divided inorganic component to the paper stock after the last shearing stage before the head box, draining the paper stock with sheet formation and drying the sheets, by a process in which cationic polyacrylamides, polymers containing vinylamine units and/or polydiallyldimethylammonium chloride having an average molar mass Mw of in each case at least 500 000 Dalton and a charge density of in each case not more than 4.0 meq/g are used as cationic polymers of the microparticle system.

Production of paper, board and cardboard

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-vinylcarboxamides, which contain, as a stabilizer, water-soluble, crosslinked graft polymers which are obtainable by free radical polymerization of compounds having at least two ethylenically unsaturated double bonds in the presence of polyalkylene glycols, are prepared by free radical polymerization of N-vinylcarboxamides in an aqueous medium in the presence of said stabilizers and are used as drainage aids, flocculants and retention aids, as wet and dry strength agents and as fixing agents in papermaking.

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

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

Paper coating slips whose additives comprise addition polymers or copolymers containing N-vinylformamide in (co)polymerized form, and their use.

Paper coating slip containing n-vinylformamide

Modifying starch with cationic polymers and use of the modified starches as dry-strength agent

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

According to the present disclosure, starch/polymer combinations are provided. The preferred starch/polymer combinations are usable as paper additives, in the wet end of a papermaking process. Typical and preferred starch/polymer combinations of this type, result from combining a starch, having a polymer reactive carbonyl functionality, with a polymer, having a carbonyl reactive functionality, under conditions that allow for covalent interaction between the two. Typically usable components comprise oxidized starch and polymer having reactive primary or reactive secondary amine groups. Also provided are methods of preparing such combinations, methods of use, preferred papers including such combinations, and, analytical techniques usable in preparation of such combinations.

Compositions suitable as additives in the paper industry, preparation; use; and, paper comprising such

Fluorescent dyes bearing at least one reactive group capable of reaction with nucleophilic groups are used for the qualitative and, if desired, quantitative fluorescence-analytical determination of the surface adsorption of compounds bearing amino and/or imino groups.

Use of fluorescent dyes for surface analysis

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

A process for the elimination of formamide from polymers containing N-vinylformamide units involves treating formamide-containing polymers with from 1 to 2 mol-equivalents of an acid or a base, based on 1 mol-equivalent of formamide, under reaction conditions such that the N-vinylformamide units in the polymer undergo virtually no hydrolysis.

Method for eliminating formamide from polymerizates containing n-vinyl formamide units

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

Growing community of inventors

Limburgerhof, Germany

Norbert Mahr