Patent ID: 7156882

Claim:
A method for bleaching textile fibers with a chlorine bleaching solution, which method comprises the following: (a) preparing a first solution containing bleaching chlorine, said solution comprising either 2.5 g/L or 3.0 g/L of free chlorine (b) adding to said first solution 1% of a second, separate solution to form a third solution, said second solution selected from the group consisting of (i) 97% water, 2% disodium phosphate dodecahydrate and 1% phosphoric acid at 75% of food grade; (ii) 96.7% water, 1% diphosphonic-1-1-hydroxyethane-1 acid and 2.3% phosphoric acid at 75% of food grade; and (iii) 96.5% water and 3.5% phosphoric acid at 75% of food grade; (c) adjusting and stabilizing said third solution to a pH of 11; and (d) bleaching said fibers in the stabilized solution.