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US 8,603,418 B2Granted
Process for making SnO
AssigneeDow Global Technologies LLC
InventorMatthew Grandbois
Life of this patent
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Abstract
Methods of preparing stannous oxide including neutralizing a solution of divalent tin ions in a mineral acid using a weak base, followed by heating the neutralized solution optionally under an inert atmosphere are provided. The stannous oxide particles produced are readily soluble in alkyl sulfonic acids.
Claims12
A method of manufacturing a plurality of stannous oxide particles comprising:
- a) providing an acidic composition comprising divalent tin ions and mineral acid;
- b) contacting the acidic composition with a base having a pKa value of 4.75 to 15 to form an alkaline composition having a pH of 8.5 to 12, wherein the base is free of added hydroxide ions;
- and
- c) heating the alkaline composition to a temperature of ≧70° C. for a period of time sufficient to form a plurality of stannous oxide particles.
1 more element
Dependencies are inferred from the claim text.