N-alkyl ammonium acetonitrile bleach activators

A bleaching composition comprising:

• a nitrile having the structure of Formula IIIA or Formula IIIB ##STR11## wherein B is a saturated ring formed by a plurality of atoms in addition to the N.sub.1 atom, the saturated ring atoms optionally including one or more of O, S and N atoms, the substituent R.sub.1 bound to the N.sub.1 atom of the Formula IIIA structure is (a) a C.sub.1-24 alkyl or alkoxylated alkyl where the alkoxy is C.sub.2-4, (b) a C.sub.4-24 cycloalkyl, (c) a C.sub.7-24 alkaryl, (d) a repeating or nonrepeating alkoxy or alkoxylated alcohol, where the alkoxy unit is C.sub.2-4, or (e) another --CR.sub.2 R.sub.3 C.tbd.N, in Formula IIIA and Formula IIIB at least one of the R.sub.2 and R.sub.3 substituents is H and the other of R.sub.2 and R.sub.3 is H, a C.sub.1-24 alkyl, cycloalkyl, or alkaryl, or a repeating or nonrepeating alkoxyl or alkoxylated alcohol where the alkoxy unit is C.sub.2-4, and in Formula IIIB the R.sub.2 ' and R.sub.3 ' substituents are chosen from the same moieties as R.sub.2 and R.sub.3 and may be the same as R.sub.2 and R.sub.3 or be different, the R.sub.4 linking group includes a polyoxyalkylene group with 1 to 24 oxyalkylene units, where one or more oxygen atoms may be replaced by a sulfur atom, or an alkylene group with 1 to 24 carbons, and Y is substantially any inorganic or organic anion;
• and
• a peroxygen releasing source.