24-10-2019 дата публикации
Номер: US20190322871A1
The present invention relates to alumina flakes having a defined thickness and particle size distribution and to their use in varnishes, paints, automotive coatings printing inks, masterbatches, plastics and cosmetic formulations and as substrate for effect pigments. and organic dyes. 1. A blended composition , comprising{'sub': 2', '3', '50', '90, 'uncoated AlOflakes having a thickness of ≥500 nm and a D-value of 15-30 μm and a D-value of 30-45 μm and/or'}{'sub': 2', '3', '50', '90, 'coated AlOflakes having a thickness of ≥500 nm and a D-value of 15-30 μm and a D-value of 30-45 μm, which have been coated with at least one layer of a metal oxide, mixtures of at least two metal oxides, metal, metal sulphide, titanium suboxide, titanium oxynitride, FeO(OH), metal alloys and/or rare earth compounds, and'}{'sub': 2', '2, 'one or more of organic dyes, organic pigments, pigments, transparent pigments, opaque white pigments, colored pigments, black pigments, flake-form iron oxides, organic pigments, holographic pigments, liquid crystal polymers, transparent luster pigments, colored luster pigments, black luster pigments based on metal oxide-coated mica, SiOflakes, fillers, natural mica, synthetic mica, nylon powder, pure melamine resins, filled melamine resins, talc SiO, glasses, kaolin, oxides of aluminum, oxides of magnesium, oxides of calcium, oxides of zinc, hydroxides of aluminum, hydroxides of magnesium, hydroxides of calcium, hydroxides of zinc, BiOCl, barium sulfate, calcium sulfate, calcium carbonate, magnesium carbonate, carbon, and physical or chemical combinations thereof.'}2. The blended composition according to claim 1 , wherein the coated and/or uncoated AlOflakes are α-alumina flakes.3. The blended composition according to claim 1 , wherein the coated and/or uncoated AlOflakes have a D-value of 30-40 μm.4. The blended composition according to claim 1 , wherein the coated and/or uncoated AlOflakes have a particle thickness of 550-1000 nm.5. The blended ...
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