Distillation: processes – separatory – Distilling to separate or remove only water – From organic compound
Reexamination Certificate
2006-09-12
2006-09-12
Manoharan, Virginia (Department: 1764)
Distillation: processes, separatory
Distilling to separate or remove only water
From organic compound
C203S036000, C203S037000, C203S099000, C203SDIG019, C423S387000
Reexamination Certificate
active
07105078
ABSTRACT:
A process for preparing a salt-free aqueous hydroxylamine solution by reacting an aqueous solution of a hydroxylammonium salt with a base to give a mixture and separating from said mixture by distillation a salt-free aqueous hydroxylamine solution, involving using as a base an aqueous solution of a mixture of NaOH and KOH in a molar ratio Na+:K+in the range from 70:30 to 95:5 and with a total concentration of Na+and K+in the range from 0.1 to 10 m/m % based on the total amount of the mixture.
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Gefaehrliche Chemische Reaktionen 25, Stoffinformationen, Hydroxylamin, 1984.
Kerth Steffen
Ströfer Eckhard
Weber Markus
Wostbrock Karl-Heinz
BASF - Aktiengesellschaft
Manoharan Virginia
Novak Druce & Quigg LLP
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