Distillation: processes – separatory – Particular type of heating
Reexamination Certificate
2006-04-18
2006-04-18
Manoharan, Virginia (Department: 1764)
Distillation: processes, separatory
Particular type of heating
C202S158000, C423S387000, C564S497000, C261S114300, C261SDIG072, C422S211000, C422S310000
Reexamination Certificate
active
07029557
ABSTRACT:
The invention relates to a method for producing a highly pure, aqueous hydroxylamine solution by distilling an aqueous solution, devoid of salt, of a hydroxyl ammonium salt in a plate column comprising at least two mechanical plates. Said method is characterised in that packing bodies are arranged between at least two plates of the plate column over the cross-section of said column.
REFERENCES:
patent: 3721850 (1973-03-01), Giller
patent: 4532087 (1985-07-01), Boronyak et al.
patent: 5389343 (1995-02-01), Gentry
patent: 5472679 (1995-12-01), Levinthal et al.
patent: 5556516 (1996-09-01), Koyama et al.
patent: 5837107 (1998-11-01), Watzenberger et al.
patent: 6059934 (2000-05-01), Stober et al.
patent: 6153799 (2000-11-01), Watzenberger et al.
patent: 6235162 (2001-05-01), Sharifian et al.
patent: 6254735 (2001-07-01), Watzenberger
patent: 6286818 (2001-09-01), Buhlmann
patent: 6299734 (2001-10-01), Watzenberger
patent: 6427985 (2002-08-01), Kaibel et al.
patent: 1 954 775 (1970-05-01), None
patent: 197 25 851 (1998-12-01), None
patent: 188 387 (1986-07-01), None
patent: 97/22551 (1997-06-01), None
patent: 98/57886 (1998-12-01), None
patent: 99/07637 (1999-02-01), None
XP-002217526.
XP-002217527.
XP-002217527.
XP-002217526.
Roth-Weller:Gefaehrliche Chem Reaktionen, p. 3, 1984, 2, Eco-med-Verlag.
Gerber Bernd
Kerth Steffen
Krüger Heinz
Rumpf Bernd
Sachweh Bernd
BASF - Aktiengesellschaft
Manoharan Virginia
Novak Druce & Quigg LLP
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