Chemistry of inorganic compounds – Sulfur or compound thereof – Oxygen containing
Reexamination Certificate
2010-04-21
2011-10-11
Vanoy, Timothy (Department: 1734)
Chemistry of inorganic compounds
Sulfur or compound thereof
Oxygen containing
C423S243080
Reexamination Certificate
active
08034318
ABSTRACT:
An efficient batch or semi-continuous method of production of relative high concentration, low byproduct-containing, calcium thiosulfate (CaS2O3) from lime, sulfur or calcium polysulfide, and sulfur dioxide under elevated reaction temperature conditions is described. The product is an emulsion of liquid calcium thiosulfate and solid byproducts. Under the conditions of the art, including the mole ratios of lime to sulfur, the temperature of the reaction process and the sulfur dioxide reaction conditions, including rate and duration, the byproducts are reduced to about 2% by weight.
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Feinstein Yelena
Hojjatie Michael Massoud
Lockhart Constance Lynn Frank
Fennemore Craig P.C.
Rosenfield Susan Stone
Tessenderlo Kerley, Inc.
Vanoy Timothy
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