RETROREFLECTIVE COMPOSITION FOR INDUSTRIAL 3D SPRAYING OF LARGE SURFACES

• Main Authors: KNOOTE, Menno Arthur, MIJNEN, Paul Willem, MUIS, Philippus Jacob, KNOOTE, Jacques Arthur, KERRES, Harald Paul
• Format: Patent
• Language: English; French; German
• Published: 27.03.2024
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention provides a retror effective ink, coating or paint composition consisting, based on the total weight of the composition, of: ⋅15-75 wt. % of solvent; 1-85 wt. % of spherical glass beads having a median particle diameter D50, as measured with laser diffraction, between 1 and 150 μm, and a refractive index, measured at a wavelength λ of 589 nm, between 1.5 and 2.8, wherein optionally at least part of the spherical glass beads are hemi spherically coated with a light-reflective coating; 0.05-2.5 wt. % of one or more thickeners; and 0.20-4.5 wt. % of synthetic pigment flakes having an average diameter between 1 and 75 μm, a thickness smaller than 1 pm and an aspect ratio (flake diameter/thickness) of at least 10; 0-2 wt. % of one or more pigment flakes or particles (D) other than synthetic pigment flakes (A), (B) and (C); ⋅0-30 wt. % of one or more further ingredients, wherein the combined amount of the synthetic pigment flakes (A), (B) and (C) and the one or more pigments flakes or particles (D) is between 0.20 and 4.5 wt. %.