Retroreflective aqueous pseudoplastic gel composition for industrial spraying

Abstract

The invention relates to an aqueous pseudoplastic gel composition, having a first viscosity η1 at a shear rate of 0.01 s−1 of between 5 and 200 Pa·s and a second viscosity η2 at a shear rate of 100 s−1 that is between 10 and 1000 times lower than the first viscosity, wherein the aqueous pseudoplastic gel consists of, based on the total weight of the composition: 15-60 wt. % of water; 20-60 wt. % of spherical glass beads having a median particle diameter D50, as measured with laser diffraction, between 5 and 150 μm, and a refractive index, measured at a wavelength λ of 589 nm, between 1.8 and 2.8; 0.15-1.5 wt. % of a thickener; and 0-50 wt. % of one or more further ingredients. The invention further relates to methods for its preparation. The invention further concerns a process for coating a substrate with a retroreflective layer using said aqueous pseudoplastic gel composition and to substrates coated with a retroreflective layer obtainable by said process.

Dependencies are inferred from the claim text.