Basf Se Corporation

Construction Research & Technology Gmbh

Nina Susanne Hillesheim

Christian Schade

Martin Ernst

Michael Schinabeck

Harald Grassl

Torben Gädt

Christoph Hesse

Sophie Maitro-Vogel

Christian Scholz

Martin Winklbauer

Torben Gaedt

Uwe Gehrig

Niklas Loges

Michael Dietzsch

Eva-Maria Reis-Walther

Pavel Tuzina

Natalia Shabelina

Hoang Trang Tran-Thien

Antonia Grafetstetter

Torben Gadt

Unsaturated compounds of formula (I): wherein: R, R, and Rare each independently H or CH; Ris a linear or branched C-C-alkylene; Rand Rare each independently H, C-C-alkyl, C-C-cycloalkyl, aryl, &#x2014;CH&#x2014;O&#x2014;C-C-alkyl, or &#x2014;CH&#x2014;O&#x2014;C-C-alkenyl, where Rand Rmay together form a C-C-alkylene; Ris independently H,C-C-alkyl, or where Ris C-C-alkyl or C-C-alkenyl; and n is an integer from 2 to 200. Mixtures and polymers including the unsaturated compounds of formula (I). A method for preparing polymers by free-radical polymerization of monomers including the unsaturated compounds of formula (I). A process for preparing polymers including polymer-analogous reactions. And polymers including compounds (I) as cement additives, grinding aids, hydraulic binder additives, concrete plasticizers, reactive plasticizers for preparing plastics, rubber, or latex, associative thickeners and antioxidants, or for preparing polyether siloxanes.

Alkoxylates of S-vinylthioalkanols

The invention relates to a dispersant comprising a polymer obtainable by copolymerization of monomers including 5 to 80 mol % of a hydroxyalkyl acrylate phosphate and/or hydroxyalkylacrylamide phosphate (monomer 1), 0 to 20 mol % of a di(hydroxyalkyl acrylate) phosphate and/or di(hydroxyalkylacrylamide) phosphate (monomer 2) and 1 to 80 mol % of a polyalkylene glycol-containing macromonomer comprising an alkene group (monomer 3). Further disclosed is a process for preparing the polymers of the invention and the use thereof as dispersants in calcium sulphate-containing compositions. A further aspect of the invention is a process for producing shaped gypsum bodies, and also shaped gypsum bodies, more particularly gypsum plasterboards and self-levelling screeds, comprising the dispersant of the invention.

Polymeric dispersant

The invention relates to a composition comprising at least one binder based on calcium sulfate and at least one polymer obtainable by polymerization of monomers based on alkoxylates of S-vinylthioalkanols. Furthermore a molding, in particular a gypsum plasterboard, a gypsum wallboard, a screed or a knifing filler, obtained by setting of the composition of the invention is disclosed.

Gypsum-containing composition

Growing community of inventors

Nidda, Germany

Nina Susanne Hillesheim