| abstract |
Metallo-porphyrins having improved stability against oxidation for use as peracid bleach catalyst in the bleaching of fabrics are disclosed. The metallo-porphyrins are Mn(III)- or Fe(III)-porphyrins having Ar-substituents on the meso-positions selected fromn andn wherein n and m may be 0 or 1; A may be sulphate, sulphonate, phosphate or carboxylate groups; B is C 1 -C 10 alkyl, polyethoxyalkyl or hydroxyalkyl, and X 1 and X 2 are Cl, Br, CH 3 , C 2 H s or CH 3 0. |