[MAEDER URS, HONERT DIETER, MARAZZANI BEAT] Poly(meth)acrylic acid derivatives in which some of the monomer units are esterified and others may be in the form of amide groups, are used in aqueous compositions as cement grinding aids. The use of aqueous compositions containing polymer(s) (A) of formula (I), as cement grinding aids. M : H, alkali metal, alkaline earth metal, di- or tri-valent metal, ammonium or organo-ammonium; R : H or methyl; R 1>, R 2> : 1-20C alkyl, cycloalkyl, alkylaryl or -(AO) n-R 4>; A : 2-4C alkylene; R 4> : 1-20C alkyl, cyclohexyl or alkylaryl; n : 2-250; R 3> : -NH 2, -NR 5>R 6> or -O-R 7>-NR 8>R 9>; R 5>, R 6> : H, 1-20C alkyl, cycloalkyl, alkylaryl, aryl, hydroxyalkyl, acetoxyethyl, hydroxyisopropyl or acetoxyisopropyl, or R 5> and R 6> together may form a morpholine or imidazoline ring; R 7> : 2-4C alkylene; R 8>, R 9> : 1-20C alkyl, cycloalkyl, alkylaryl, aryl or hydroxyalkyl; a/b/c/d : (0.1-0.9)/(0.1-0.9)/(0-0.8)/(0-0.3); (a+b+c+d) : 1 . An independent claim is also included for a method for the production of cement by adding an aqueous composition containing (I) to clinker and then grinding the mixture to form cement. [Image].

[HURLEY, Colin, SCHRABBACK, Jorg M., HELLER, Thomas, HONERT, Dieter] Zugerstrasse 50, 6340 Baar, CH

[COLIN HURLEY, DIETER HONERT, JORG M SCHRABBACK, THOMAS HELLER] CH

[MARAZZANI BEAT, HONERT DIETER, MADER URS] CH

[MADER URS, HONERT DIETER, MARAZZANI BEAT] CH The invention relates to an aqueous polymer composition which is used in the form of a cement grinding aid and makes it possible to effectively reduce the grinding time and to obtain cements exhibiting excellent characteristics. A cement grinding aid containing a combination of polymer A and known cement grinding aids is also disclosed.

[Honert, Dieter, Blask, Oliver] Zugerstrasse 50, 6340 Baar, CH Die vorliegende Erfindung betrifft Magnesiumzemente enthaltend eine Magnesiumverbindung ausgewählt aus Magnesiumoxid, Magnesiumcarbonat und Magnesiumhydroxid sowie ein Magnesiumsalz, ein Kammpolymer und Quarzsand. Die erfindungsgemässe Zusammensetzung zeichnet sich durch eine vorteilhafte Verarbeitbarkeit aus sowie durch einen geringen Wassergehalt.

[Dieter Honert, Hans Knauber, Julia Hillenbrand] CH Baar The subject matter of the invention are coated aggregates for producing concrete and methods for the production thereof. The invention also relates to concrete compositions for producing concrete and concrete provided with aggregates, production methods and the use of organic polymers for the improvement of the stability of concrete.

[Frank Schubert, Anke Reinschmidt, Andreas Vetter, Sabina Kruczek, Dieter Honert, Thomas Müller, Inna König, Oliver Blask, Arnd Eberhardt] DE Essen The invention relates to the use of carboxylic acid-based polyoxyalkylenes as low-emissions shrinkage reducers in mineral binders, to methods of reducing shrinkage and to corresponding compositions.

[Honert, Dieter, Blask, Oliver] Zugerstrasse 50, 6340 Baar, CH Gegenstand der Erfindung ist ein Magnesiumzement, enthaltend＜br /＞ (a) mindestens eine Magnesiumverbindung,＜br /＞ (b) mindestens ein Kammpolymer, das ein lineares Polymergerüst und daran gebundene Seitenketten aufweist, wobei das lineare Polymergerüst Carbonsäuregruppen und/oder Carboxylatgruppen aufweist, und＜br /＞ (c) gegebenenfalls mindestens einen Füllstoff.Die Erfindung betrifft auch Bindemittelsuspensionen und Verarbeitungshilfen für die Magnesiumzemente, Formkörper, Verfahren und Verwendungen der Magnesiumzemente.

[MÄDER, Urs, HONERT, Dieter, MARAZZANI, Beat] Zugerstrasse 50, 6340 Baar, CH