Huels Aktiengesellschaft

Juergen Gruetzke

Stefan Schmidt

Uwe Tanger

Gerda Grund

The invention relates to a process for bleaching aqueous surfactant solutions using hydrogen peroxide, specific decomposition of the unreacted hydrogen peroxide and/or oxidizing secondary products formed therefrom being performed using enzymes. The reaction proceeds under very mild conditions and leads to extremely pale, low-odor products.

Process for bleaching surfactant solutions

The invention relates to a process for bleaching aqueous alkyl polyglycoside solutions using hydrogen peroxide, in a first step the actual bleaching being carried out at alkaline pHs in the presence of an inorganic additive (hydrogen peroxide decomposition inhibitor) and in a second step a specific decomposition of the unreacted hydrogen peroxide being performed by contact with transition metals or inorganic compounds thereof.

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Bochum, Germany

Juergen Gruetzke