Water-Soluble, Hydrophobically Associating Nanocomposites (As Rheology Modifiers For Applications In Construction Chemistry)

Abstract

Hydrophobically associating nanocomposites which contain a silica, a hydrophobically modified monomer and a hydrophilic monomer. The silica constituent comprises an aqueous colloidal solution of amorphous silicon dioxide (SiO2), from 0.1 to 10% by weight of the hydrophobically modified monomer and from 10% by weight to 99.9% by weight of the hydrophilic monomer. The preparation of nanocomposites is effected by a free radical polymerization as gel polymerization in the aqueous phase. These nanocomposites have a substantially improved action as water retention agents and rheology modifiers in aqueous construction material systems and have improved properties compared with currently used products.

Dependencies are inferred from the claim text.