Process for the preparation of a mixture of sodium silicate and another salt and use of this mixture

摘要

To prepare a mixture of sodium silicates having a layer structure and a molar SiO2:Na2O ratio of 1.9:1 to 20:1 and at least one other salt supporting a washing or cleaning process, sodium silicate essentially composed of delta -Na2Si2O5 is initially reacted with at least one acid in the pH range from 9 to 13 with stirring. Hydrogen peroxide is then added to the reaction product. The reaction mixture is then concentrated under reduced pressure and dried. This mixture can be used as a composition for washing, cleaning and dishwashing and for bleaching wood pulp and paper.