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US 10,287,439 B2Granted
Carbonate pigments, and methods for making and using the same
AssigneeBlue Planet, Ltd.
InventorsBrent R. Constantz, Seung-Hee Kang
Life of this patent
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Abstract
Carbonate pigment compositions are provided. In some instances, the pigment compositions are CO2 sequestering pigment compositions. Also provided are methods of making and using the pigment compositions, e.g., in paints and coatings, as well as other applications.
Claims20
A carbonate pigment composition, wherein the carbonate pigment composition is a CO2 sequestering material having an isotopic profile that identifies the composition as being of fossil fuel origin, that is prepared by:
- contacting a CO2 containing gas comprising anthropogenic CO2 with a bicarbonate buffered aqueous medium having a pH that ranges from 8 to 10 under conditions sufficient to produce a bicarbonate rich product that comprises droplets of a liquid condensed phase (LCP) in a bulk liquid;
- and
- precipitating a microcrystalline carbonate from the bicarbonate rich product by combining the bicarbonate rich product with a cation source to produce the carbonate pigment composition.
A method of producing a carbonate pigment composition, the method comprising:
- contacting a CO2 containing gas comprising anthropogenic CO2 with a bicarbonate buffered aqueous medium having a pH that ranges from 8 to 10 to produce a bicarbonate rich product that comprises droplets of a liquid condensed phase (LCP) in a bulk liquid;
- and
- precipitating a microcrystalline carbonate from the bicarbonate rich product by combining the bicarbonate rich product with a cation source;
- to produce a carbonate pigment composition that is a CO2 sequestering material having an isotopic profile that identifies the composition as being of fossil fuel origin.
1 more element
Dependencies are inferred from the claim text.