Abstract
A unique hydrogen peroxide bleaching process for mechanical pulps is described, in which the bleaching is carried out at near neutral pH and without the use of any soluble alkali or alkali generating reagents for peroxide activation. Neither metal chelating agents nor peroxide stabilizer agents such as silicates, are required. ISO brightness and b* values at least as good as, and in many cases considerably better than, conventional alkali peroxide bleaching can be obtained by this process.
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