Basf Se Corporation

Bolette Urtel

Gerhard Schnabel

Jürgen Detering

Wolfgang Loth

Ruth Wirschem

Howard Roger Dungworth

Torben Gädt

Stephan Nied

Jochen Petzoldt

Uwe Meisenburg

Andrea Misske

Juergen Detering

Dieter Faul

David Petty

Thorsten Bastigkeit

Heike Weber

Thomas Eiting

Andreas Daiss

Paul Klingelhoefer

Ewald Heintz

Christian Hubert Weidl

Wolfgang Mattmann

Elke Gütlich-Hauk

Matthias Laubender

Markus Brym

Torben Gaedt

Christian Krueger

Andreas Kempter

Virginie Bette

Dirk Gerhard

Alexsandro Berger

Matthias Kleiner

Ralf Mossbach

Jessica Neumann

Jean-Marc Ballin

Elke Guetlich-Hauk

Klaus Haas

Aurelie Alemany

Dorota Sendor-Müller

Klaus-Peter Neugebauer

Andreas Daiβ

Andreas Daisse

Clarissa Seidl

Dorota Sendor-Mueller

Torben Gadt

Jurgen Detering

Clarissa Gieger

Dorota Sendor-MÜLLER

The invention relates to copolymers which comprise, in copolymerized form,

Copolymers comprising carboxylic acid groups, sulfo groups and polyalkylene oxide groups as a scale-inhibiting additive to washing and cleaning products

A polymer mixture in solid or aqueous form includes a content of from 5 to 95% by weight of a first polymer and a content of from 5 to 95% by weight of a second polymer. The first polymer is a water-soluble or water-dispersible polymer having a weight-average molecular weight of 1000 to 20 000 g/mol. The second polymer is a water-soluble or water-dispersible polymer having a weight-average molecular weight of 1000 to 50 000 g/mol. The polymer mixture can inhibit precipitation and sedimentation of calcium salts and magnesium salts in water-bearing systems.

Polymer mixtures as deposit inhibitors in water-bearing systems

In a process for preparing (meth)acrylic esters (E) of polyalkoxy-containing alcohols which comprises reacting polyalkoxy-containing alcohols (P) of formula (I) where

Preparation of (meth)acrylic esters of polyalkoxy-containing alcohols

An aqueous solution of an acrylic acid polymer which contains bound phosphonite groups is provided. The acrylic acid polymer is prepared by a feed operation polymerization which results in the formation of phosphinite groups bound within the acrylic acid polymer chain. The dried acrylic acid polymer is also provided. Dispersions of inorganic pigments prepared in the presence of the acrylic acid polymer or the aqueous solution of the acrylic acid polymer are also provided.

Low molecular weight phosphorus-containing polyacrylic acids and use thereof as dispersants

The present invention relates to a method for the continuous production of a polymer by radical polymerization, wherein at least three materials are mixed with microstructures in one or more mixers and are then polymerized in at least one reaction zone.

Method and device for the continuous production of polymers by radical polymerization

A process for preparing aqueous solutions of homo- or copolymers of acrylic acid by means of free-radical polymerization of acrylic acid and optionally water-soluble, monoethylenically unsaturated comonomers in an aqueous medium in the presence of at least one water-soluble initiator and of at least one water-soluble regulator, wherein the polymerization is conducted by means of a continuous process, and wherein, after the polymerization, low molecular weight components are at least partly removed from the resulting aqueous polymer solution. For the polymerization, preference is given to using microstructured mixers and reactors. Preference is given to using at least one reactor and/or mixer with microstructures for the process.

Process for preparing aqueous polyacrylic acid solutions

Swellable nonwovens with reduced washoff loss are produced.

Method for producing a swelling nonwoven fabric

The invention relates to an aqueous solution of acrylic acid polymers, obtainable by polymerization of acrylic acid in feed mode with peroxodisulfate as initiator in the presence of hypophosphite in water as solvent, wherein

Low molecular weight phosphorus-containing polyacrylic acids and use thereof as scale inhibitors in water-carrying systems

Aqueous solutions of acrylic acid polymers are prepared by polymerization of acrylic acid in a feed operation with a free-radical initiator in the presence of hypophosphite in water as solvent, by a process comprising (i) initially charging water and optionally one or more ethylenically unsaturated comonomers, (ii) continuously adding acrylic acid in acidic, unneutralized form, optionally one or more ethylenically unsaturated comonomers, aqueous free-radical initiator solution and aqueous hypophosphite solution, and (iii) adding a base to the aqueous solution on completion of the acrylic acid feed, wherein a comonomer content does not exceed% by weight and the aqueous hypophosphite solution is added during a total feed time made up of three consecutive feed time spans &#x394;t, &#x394;t, and &#x394;t, wherein the average feed rate in the second feed time span &#x394;tis greater than the average feed rates in the first and third feed time spans &#x394;tand &#x394;t.

Method of adjusting the viscosity of a salt having a melting point of less than 100&#xb0; C. at atmospheric pressure (referred to as ionic liquid for short), wherein an oligomeric or polymeric compound which has a content of at least 0.01 mol of covalently bound acid groups/100 g of compound with at least 1% of the acid groups being present as a salt with an organic cation comprising at least one heteroatom selected from among nitrogen, oxygen, sulfur and phosphorus is added to the ionic liquid.

Ionic liquids having a content of ionic polymers

The invention relates to a process for preparing a polymer by free-radical polymerization of at least one ethylenically unsaturated monocarboxylic acid and/or a salt thereof, at least one ethylenically unsaturated dicarboxylic acid and/or an anhydride and/or a salt thereof, in the presence of hypophosphorous acid and/or a salt thereof. The invention also relates to a polymer composition obtainable by this process. The invention also relates to the use of such a polymer composition as detergent additive, e.g. as dispersant, scale inhibitor or sequestrant for laundry detergents.

Copolymers of monocarboxylic acids and dicarboxylic acids, their preparation and use

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Bobenheim-Roxheim, Germany

Bolette Urtel