Process for treating tertiary amines

Details Process for treating tertiary amines Process for treating tertiary amines

1991-03-18

1992-05-12

Elmore, Carolyn

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

564497, C07C20990

Patent

active

051130173

ABSTRACT:
A tert-amine which contains an acid-activated color body precursor is treated to prevent it or a derivative thereof, e.g., an amine oxide, betaine, or quaternary ammonium compound, from turning pink when exposed to acidic conditions by contacting it with an inorganic sulfite selected from alkali metal sulfites and bisulfites, preferably sodium sulfite, at a temperature above 100.degree. C.

REFERENCES:
patent: 3567779 (1971-03-01), Currier et al.
patent: 3723529 (1973-03-01), Pitts et al.
patent: 3922306 (1975-11-01), Takaku et al.
patent: 4347381 (1982-08-01), Tubell
patent: 4766247 (1988-08-01), Ford et al.

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