Process for reducing the levels of nitrite contaminants in amine

Details Process for reducing the levels of nitrite contaminants in amine Process for reducing the levels of nitrite contaminants in amine

1995-06-07

1996-03-12

O'Sullivan, Peter

Compositions

Fluent dielectric

N-containing

252541, 252544, 252545, 252547, 564 2, 564297, 564298, C07C29104, C11D 175

Patent

active

054983738

ABSTRACT:
Amine oxide surfactants contaminated with nitrite are treated under acidic conditions with materials such as maleic acid and diethylenetriaminepentaacetate (DTPA) to reduce nitrite levels below 1 ppm. Thus, C.sub.12-13 dimethyl amine is oxidized with hydrogen peroxide in the presence of maleic acid and DTPA to reduce nitrite levels. The resulting nitrite-free amine oxide is employed in various detergent compositions.

REFERENCES:
patent: 3283007 (1966-11-01), Chadwick
patent: 4247480 (1981-01-01), Murata et al.
patent: 5075501 (1991-12-01), Borland et al.

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