Abstract: Mixtures comprising (A) at least one hydraulic or latently hydraulic binder, (B) at least one copolymer obtainable by reacting (?1) at least one ethylenically unsaturated comonomer having at least one functional group selected from COOH groups, sulfonic acid groups, nitrile groups, hydroxyalkyl groups and amino groups, or (?2) at least one (co)polymer of at least one ethylenically unsaturated comonomer having at least one functional group selected from COOH groups, sulfonic acid groups, nitrile groups, hydroxyalkyl groups and amino groups, with (?) at least one oligomeric or polymeric compound obtainable by reacting (a) at least one ethylenically unsaturated di- or polycarboxylic acid or anhydride or ester thereof with (b) at least one at least trifunctional alcohol and (c) at least one compound of the general formula I in which the variables are each defined as follows: R1 is selected from C1-C4-alkyl and hydrogen, A is the same or different and is selected from C2-C6-alkylene, n is in the range f

Abstract: The invention relates to polymer-modified cement-containing building material dry mixes which contain a redispersible polymer powder, water retention agents based on polysaccharide structures, a calcium-containing setting accelerator and a superabsorbent copolymer.

Abstract: The invention relates to a hydrophobically modified cationic copolymer which has at least three different structural units. Particularly in combination with anionic surfactants, a considerable improvement in the water retention in aqueous building material systems based on hydraulic binders, such as cement, can be achieved even in the case of high salt loads.

Abstract: The invention relates to a process for the production of water-soluble or water-swellable polymers having a low content of residual monomers, particularly on the basis of acrylic acid and/or acrylamide and at least one additional water-soluble comonomer, in which process a monomer solution in a polymerizing state is treated with electromagnetic radiation at the earliest after reaching the maximum temperature of polymerization, and the gel obtained is subsequently crushed and dried, and it also relates to the water-soluble or water-swellable polymers as such, which can be obtained according to said process, to their use in the hygiene industry, packaging industry, in the agrarian technology or in agriculture and horticulture, in the cable industry and information technology, in the food industry, papermaking industry, and to their use as flocculation aids and as drilling fluid in petroleum production.

Abstract: The invention relates to cationic water-soluble polyelectrolytes, especially terpolymers, which are obtained by polymerising monomers of (meth)acrylamide, a quaternised (meth)acrylamide derivative, a (meth)acrylic acid derivative and/or hydrolysis-stable cationic monomers. The composition of the polyelectrolytes is characterised by a toxicity index formula Fi=(QTP?2QME)/10?1 wherein QTP represents the total cationic charge of the polymer and QME represents the charge part of the ester type monomer. The invention also relates to the production and use of said polyelectrolytes and water-in-water polymer dispersions which contain said polyelectrolytes.

Abstract: The invention relates to hydrosoluble polymers exhibiting improved solubility characteristics, the production and use thereof. The inventive polymers can be of natural or synthetic nature and are provided with a water glass-containing coating. They are used, for example for water and wastewater treatment.

Abstract: The invention relates to powdery, water-soluble cationic polymers containing at least two chemically different composed cationic polymers. A first cationic polymer is formed in the presence of a second cationic polymer from the monomer constituents in an aqueous solution according to the aqueous gel polymerisation method. The invention also relates to the use of said products in solid/liquid separation.

Abstract: The invention relates to powdery, water-soluble cationic polymer compositions comprising at least two cationic polymer compositions comprising at least two cationic polymers having a different molecular weight. A first cationic polymer is formed in the presence of a second cationic polymer from monomer constituents in an aqueous solution according to the aqueous gel polymerization method. The invention also relates to the use of products in solid/liquid separation.

Abstract: The invention relates to cationic water-soluble polyelectrolytes, especially terpolymers, which are obtained by polymerising monomers of (meth)acrylamide, a quaternised (meth)acrylamide derivative, a (meth)acrylic acid derivative and/or hydrolysis-stable cationic monomers. The composition of the polyelectrolytes is characterised by a toxicity index formula Fi=(QTP?2QME)/10?1 wherein QTP represents the total cationic charge of the polymer and QME represents the charge part of the ester type monomer. The invention also relates to the production and use of said polyelectrolytes and water-in-water polymer dispersions which contain said polyelectrolytes.

Abstract: The invention relates to water-soluble homopolymers and copolymers, which comprise an EbC50 value according to the algae toxicity test of <i> Scenedesmus subspicatus</i> of grater than 10 mg/l. The invention also relates to the production and use of these polymers as flocculation aids or thickeners and as a constituent of a plant protective agent or of an erosion protective agent.

Abstract: The invention relates to water-soluble homopolymers and copolymers, which comprise an EbC50 value according to the algae toxicity test of <i>Scenedesmus subspicatus</i>of grater than 10 mg/l. The invention also relates to the production and use of these polymers as flocculation aids or thickeners and as a constituent of a plant protective agent or of an erosion protective agent.