Cleaning fabrics

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1976-04-16

1977-01-18

Engle, Samuel W.

Bleaching and dyeing; fluid treatment and chemical modification

Bleaching

Chemical

252 95, 252 96, 252 97, 252 98, 252 99, 252186, D06L 302

Patent

active

040037002

ABSTRACT:
In a process for removing stains from fabrics by washing in an aqueous medium containing a peroxygen compound and an acylamide activator, extremely small amounts of the activator, e.g., about 5 to 50 ppm., are effective if the medium contains about 100 to 300 ppm of trisodium nitrilotriacetate or ethylene diamine tetraacetic acid sodium salt and an amount of the peroxygen compound representing about 3 to 80 ppm of active oxygen and substantial excess of active oxygen over that stoichiometrically equivalent to the amount of activator.

REFERENCES:
patent: 3630921 (1971-12-01), Disch
patent: 3637339 (1972-01-01), Gray
patent: 3714050 (1973-01-01), Gray
patent: 3969257 (1976-07-01), Murray

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