N,N diacyl O-substituted imide bleach activators and compositions employing them are provided. The activators have the general formula: ##STR1## wherein X is selected from O, NR.sup.16 and S; e is 0 or 1; f is 0 or 1; R.sup.16 is selected from H and C.sub.1 -C.sub.4 linear or branched, saturated or unsaturated alkyl groups; and R.sup.1 is preferably phenyl or C.sub.7 -C.sub.13 linear or branched chain, saturated or unsaturated alkyl; R.sup.2 is preferably C.sub.1 -C.sub.10 branched or unbranched, saturated or unsaturated alkyl and R.sup.3 is preferably C.sub.1 -C.sub.12 linear or branched chain, saturated or unsaturated alkyl. Bleach additive and bleaching compositions including the bleach activators and methods of cleaning fabrics are also provided.

El diacyl de N,N O-substituyo' los activadores del blanqueo del imida y las composiciones que los emplean se proporcionan. Los activadores tienen el fórmula general: ## del ## STR1 en donde X se selecciona de O, de NR.sup.16 y de S; e es 0 o 1; f es 0 o 1; R.sup.16 se selecciona de H y de C.sub.1 - grupos alkyl lineares o se ramifica, saturados o no saturados de C.sub.4; y R.sup.1 es preferiblemente fenilo o C.sub.7 - alkyl linear o ramificado de C.sub.13 de la cadena, saturada o no saturada; R.sup.2 es preferiblemente C.sub.1 - C.sub.10 ramificó o el alkyl no ramificado, saturado o no saturado y R.sup.3 es preferiblemente C.sub.1 - alkyl linear o ramificado de C.sub.12 de la cadena, saturada o no saturada. Las composiciones aditivas y que blanquean del blanqueo incluyendo los activadores del blanqueo y los métodos de limpiar telas también se proporcionan.

 
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