B - Operations – Transporting – 01 – F
Patent
B - Operations, Transporting
01
F
134/45
B01F 3/12 (2006.01) C01G 30/00 (2006.01)
Patent
CA 1071057
ABSTRACT OF THE DISCLOSURE A colloidal dispersion of hydrous antimony pentoxide particles is made by a process which comprises introducing particles of an oxidizable antimony oxide into a polar organic solvent selected from the group consisting of formamide, methyformamide, dimethyl formamide, acetamide, methylacetamide, dimethylacetamide, dimethyl sulfoxide, formic acid, tetramcthyl urea, methanol and ethanol, and contacting said particles with aqueous hydrogen peroxide in the presence of an aliphatic alpha-hydroxy carboxylic acid and a halogen acid selected from the group consisting of hydrogen chloride and hydrogen bromide, at a temperature of from about 0°C to the decomposition temperature of the reaction mixture for a length of time sufficient to convert at least a portion of said particles to colloidal particles of hydrous antimony pentoxide.
259332
Crompton Charles E.
Kazi Abdulla M.z.
Na
Ppg Industries Inc.
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