Patent ID: 7824448

Claim:
A process for removing a stain from a substrate which comprises treating the substrate with a solution containing an effective amount of a halo active aromatic sulfonamide compound having the formula: wherein X is a halogen; R 3 is hydrogen, methyl, or COOM; R 1 , R 2 , R 4 , R 5 are hydrogen, COOH, an ester or alkylated amide, COOM, CN, NO 2 , SO 3 H, a halogen, a substituted or unsubstituted phenyl group, a sulfonamide, or a halosulfonamide; R 1 , R 2 , R 4 and R 5 are other than all hydrogen; M is an alkali or alkaline earth metal; and n is the number of water molecules per molecule of the halo active aromatic sulfonamide compound.