METHOD FOR PRODUCING AQUEOUS HYDROXYLAMINE SOLUTIONS WHICH ARE SUBSTANTIALLY FREE OF METAL IONS

Title:

METHOD FOR PRODUCING AQUEOUS HYDROXYLAMINE SOLUTIONS WHICH ARE SUBSTANTIALLY FREE OF METAL IONS

Document Type and Number:

WIPO Patent Application WO1999042434

Kind Code:

A3

Abstract:

The invention relates to a method for producing an aqueous hydroxylamine solution which is substantially free of metal ions. According to said method the hydroxylamine solution is subjected to at least one treatment with an acid cation exchanger.

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Inventors:

WATZENBERGER OTTO (DE)
SCHNEIDER HANS-MICHAEL (DE)

Application Number:

PCT/EP1999/000993

Publication Date:

October 21, 1999

Filing Date:

February 16, 1999

Export Citation:

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Assignee:

BASF AG (DE)
WATZENBERGER OTTO (DE)
SCHNEIDER HANS MICHAEL (DE)

International Classes:

B01J39/04; B01J45/00; C01B21/14; C07C213/00; (IPC1-7): C01B21/14; C07C213/10

Domestic Patent References:

WO1997022551A1

1997-06-26

Foreign References:

US5788946A	1998-08-04
DE3608495A1	1987-09-17
US5472679A	1995-12-05

Other References:

CHEMICAL ABSTRACTS, vol. 81, no. 26, 30 December 1974, Columbus, Ohio, US; abstract no. 172427h, HOROSE TOSHIYOSHI: "Stabilizing an aqueous solution of hydroxylamine or a salt thereof" page 177; column 2; XP002900526

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