Construction Research & Technology Gmbh

Pci Augsburg Gmbh

Patrick Weiss

Michael Schinabeck

Stefan Friedrich

Manfred Schuhbeck

Werner Stohr

Steffen Wache

Uwe Holland

Michael Eberwein

Klaus-Dieter Hötzl

Klaus-Dieter Hoetzl

Thomas Heichele

Andreas Eisenreich

Karl Frenkenberger

Stefan Köhler

Peter Gäberlein

Alexander Dressen

Alexander Ehle

Kornelia Kratzer

Stefan Koehler

Alexander DREßEN

Ulrich Bäurle

Paul Müller

Markus Streicher

Yvonne Schäpers

Additives for application in construction chemistry are proposed comprising an organic and/or inorganic core component A) with rheology-enhancing properties and a shell component B) applied to the same by virtue of physical and/or chemical interactions which acts as a coating. Component A) should be a of water-soluble and/or water-swellable and/or water-absorbable compound of the non-cellulose type with viscosity-enhancing properties in the final application. The shell component B) should preferably be a film-forming polymer which is able to release component A) during the application in construction chemistry in a retarded manner such as for example polyvinyl alcohol, polyvinyl acetate and polyethylene glycol. Component B) can be composed of several layers and comprises at least one reactive layer. The new additive is used as an additive with a time-delayed action in paints and also for timed control of the increase in viscosity or development of rheology in building material systems based on inorganic binders.

Additive with applications in construction chemistry

The invention relates to an inorganic binder system comprising a) calcium silicate cement, b) calcium aluminate cement, c) at least one trifunctional polyalkylene glycol and d) optionally calcium sulphate. Additionally disclosed is the use of at least one polyalkylene glycol as an accelerator for an inorganic binder system comprising a) calcium silicate cement, b) calcium aluminate cement and d) optionally calcium sulphate.

Cement accelerator

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Augsburg, Germany

Patrick Weiss