Metallo-porphyrins for use as bleach catalyst

Details Metallo-porphyrins for use as bleach catalyst Metallo-porphyrins for use as bleach catalyst

C - Chemistry, Metallurgy

11

D

134/5, 8/83

C11D 3/28 (2006.01) C11D 3/16 (2006.01) C11D 3/39 (2006.01) C11D 7/54 (2006.01)

Patent

CA 2010271

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 from (a) Image ; (b) Image and (c) Image wherein n and m may be 0 or 1; A may be sulphate, sulphonate, phosphate or carboxylate groups; B is C1-C10 alkyl, polyethoxyalkyl or hydroxyalkyl, and X1 and X2 are Cl, Br, CH3, C2H5 or CH3O.

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