IMPREGNATING MEDIUM FOR CELLULOSE-CONTAINING MATERIAL

摘要

The present invention is concerned with an impregnating medium for cellulose-containing material, chiefly paper and wood. The active substance in this impregnating medium is a mixture of and alkali aluminates which shows a large hydrophobising effect in only low concentrations. It has the advantage that it is employed as an aqueous solution so that it can also be employed within closed spaces and does not give rise to any problems with respect to ventilation of the spaces with moistening solvent. The solution is stable on storage, it contains preferably between 0.1 and 2.0 weight % alkylsilanol and between 0.03 and 0.1 weight % alkali aluminate.