Cyanoamines and compositions useful for bleaching

Details Cyanoamines and compositions useful for bleaching Cyanoamines and compositions useful for bleaching

1994-05-10

1995-12-26

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Bleaching

Chemical

252102, 25218638, 25218639, 134 2, D06L 302, C11D 328, C11D 3395

Patent

active

054783569

ABSTRACT:
Cyanoamine activators give excellent bleaching performance when combined with a peroxygen source and dissolved in solution. Activators include imides wherein each activator has two acyl groups attached to a common nitrogen and to a cyclic moiety, with the nitrogen being cyano substituted. The two acyl groups form intermediate peroxy groups in the presence of a peroxygen source in solution. Preferred activators include N-cyanophthalimide and N-cyanosuccinimide.

REFERENCES:
patent: 2992223 (1961-07-01), Frazza et al.
patent: 3583924 (1971-06-01), Demangeon et al.
patent: 4199466 (1980-04-01), Benson, Jr.
Makhon'kov et al., "Reactions of Tetracyanomethane and Chlorotricyanomethane with the Anions of Dibasic Acid Imides," J. Org. Chem., USSR (English translation), 13, pp. 890-893 (1977).
Sheludyakov et al., "Synthesis and Properties of Diacylcarbamoyl Chlorides and Compounds Derived from Them," J. Gen. Chem. USSR (English translation), 47, pp. 974-978 (1977).

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