Sika Technology Ag

Dieter Honert

Ueli Sulser

Franz Wombacher

Christian Bürge

Beat Marazzani

Thomas Müller

Urs Mäder

Thomas Heller

Hans Knauber

Christian Buerge

Urs Maeder

Julia Hillenbrand

Oliver Blask

Olaf Kern

Colin Hurley

A solubilizer is used to stabilize crude polyol produced from biomass.

Stabilization of crude polyols from biomass

A description is provided of the use of an additive including polycarboxylate ether and/or lignosulfonate as grinding aid in cement grinding for producing a cement, especially when fly ash and rock flour are used in the cement. The additive is preferably an aqueous additive. The use of the grinding aid in the production of the cement leads to improved processability of concrete or mortar produced from the cement. In particular, improved stiffening behavior, a reduced water requirement, or a reduced superplasticizer requirement for the mortar or concrete is obtained.

Grinding aid for cement clinker based on polycarboxylate ethers and/or lignosulfonates

An additive composition including a grinding aid selected from glycols, monocarboxylic acids with 1 to 4 carbon atoms, and comb polymers; as well as at least one retardant, which can be used during the process of grinding cement clinker and which leads to low brown discoloration of the ground cement in the processed state.

Additive for mineral binding agents having reduced brown discoloration potential

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.

Coated aggregate for producing concrete

This disclosure relates to stabilizing polycarboxylates, such polycarboxylate ethers, in a presence of an inorganic powder at an elevated temperatures by using at least one antioxidant.

Method for stabilizing polycarboxylates

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Dielheim, Germany

Dieter Honert