Chemistry of inorganic compounds – Halogen or compound thereof – Binary compound containing metal
Reexamination Certificate
2003-07-04
2008-08-05
Wilson, James O. (Department: 1624)
Chemistry of inorganic compounds
Halogen or compound thereof
Binary compound containing metal
Reexamination Certificate
active
07407643
ABSTRACT:
A process for the removal of water from a mixture comprising water and zinc chloride, which comprises adding to said mixture comprising water and zinc chloride an aprotic, polar diluentwhose boiling point in the case where an azeotrope is not formed between said diluent and water under the pressure conditions of the distillation mentioned below is higher than the boiling point of water and which is in liquid form at this boiling point of water orwhich forms an azeotrope or heteroazeotrope with water under the pressure and temperature conditions of the distillation mentioned below, anddistilling the mixture comprising water, zinc chloride and the diluent with removal of water or said azeotrope or said heteroazeotrope from this mixture, giving an anhydrous mixture comprising zinc chloride and said diluent.
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Bartsch Michael
Baumann Robert
Haderlein Gerd
Jungkamp Tim
Luyken Hermann
BASF SE
Connolly Bove & Lodge & Hutz LLP
Sackey Ebenezer
Wilson James O.
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