Abstract: The invention relates to innovative cellulose derivatives with low surface swelling in aqueous suspension, with high relative high-shear viscosity, and with high thermal flocculation point in water, and also to their use in building-material systems.

Abstract: The present invention relates to a process for preparing cellulose ether products which is characterized in that superabsorbent polymers (SAPs) are dried and milled, or mill-dried, conjointly with moist cellulose ether and also to the cellulose ether products resulting from this process.

Abstract: A description is given of particle compositions of polysaccharides and/or polysaccharide derivatives and at least one synthetic polymer and if appropriate other aids, characterized in that I. the particles contain a plurality of solid phases, II. the solid phase of the synthetic polymer being contained in the solid phase of the polysaccharide and/or polysaccharide derivative. Likewise a description is given of a process for producing these particle compositions and also of their use in construction material mixtures, for example mortars, plasters, fillers or thin-bed adhesives.

Abstract: A description is given of a cellulose ether composition as additive for the extrusion of mineral masses which comprises 70 to 99.9% by weight of cellulose ether and 0.1 to 30% by weight of superabsorbent polymer, as well as a process for the extrusion of mineral masses using these compositions as additive.

Abstract: A description is given of additives for the extrusion of construction material systems, characterized in that the additives comprise irreversibly crosslinked cellulose ethers having gel-like rheological properties, and the use of irreversibly crosslinked cellulose derivatives as additives for the extrusion of construction material systems and also of an extrusion process for construction material systems.