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The present invention provides rheology modifiers, which are water-soluble polymers having a weight average molecular weight (Mw) of at least 1'000'000 g/mol and an intrinsic viscosity of at least 2.5 dl/g, both as determined by size exclusion chromatography, and wherein the water-soluble polymers are in the form of solid particles. It also provides mixtures of rheology modifiers comprising a...