16-02-2017 дата публикации
Номер: US20170044374A1
Filler pigments based on platelet-shaped substrates, which are coated with barium sulfate and at least two metal oxides and/or metal hydroxides are highly suitable as filler pigments especially for cosmetic formulations. 1. A filler pigment comprising a platelet-shaped substrate coated with barium sulfate and at least two metal oxides and/or metal hydroxides of the following layer structure:{'sub': 2', '2', '4, 'substrate+SnO+TiO+BaSO'}{'sub': 2', '2', '4, 'substrate+mixture of SnO+TiO+BaSO'}{'sub': 2', '2', '4', '2, 'substrate+mixture of SnO+TiO+BaSO+layer of SiOon top'}{'sub': 2', '2', '4, 'substrate+SiO+TiO+BaSO'}{'sub': 2', '2', '4, 'substrate+SiO+SnO+BaSO'}{'sub': 2', '2', '4, 'substrate+SnO+TiO+BaSO+Carmine red'}{'sub': 2', '2', '4, 'substrate+SnO+TiO+BaSO+Prussian Blue'}{'sub': 2', '4', '2, 'substrate+SnO+BaSO/TiO'}{'sub': 2', '2', '4', '2, 'substrate+SnO+TiO+BaSO+SiO'}{'sub': 4', '2', '2', '2, 'substrate+BaSO+SnO+TiO+SiO'}{'sub': 2', '3', '4', '2', '2, 'substrate+AlO+BaSO+SnO+SiO'}{'sub': 2', '3', '4', '2, 'substrate+ZnO+AlO+BaSO+SiO'}{'sub': 2', '3', '4', '2, 'substrate+AlO+BaSO+SnOor'}{'sub': 2', '3', '4, 'substrate+ZnO+AlO+BaSO.'}2. A filler pigment according to claim 1 , wherein the substrate is natural or synthetic mica claim 1 , doped or undoped AlOflakes claim 1 , doped or undoped SiOflakes claim 1 , talc claim 1 , kaolin claim 1 , or doped or undoped glass flakes or mixtures thereof.3. (canceled)4. The filler pigment according to claim 1 , wherein the substrate has an aspect ratio of 2 to 2000.5. The filler pigment according to claim 1 , containing an amount of barium sulfate of 5-200 wt.-% based on the substrate.6. (canceled)7. The filler pigment according to claim 1 , surface coated with a layer of SiO.8. (canceled)9. A process for the production of a filler pigment of claim 1 , comprising suspending the substrate in an aqueous solution claim 1 , adding the barium salt and at least two metal salt solutions at a pH which is suitable for hydrolysis ...
Подробнее