Use of carbonate-silicate-cogranulates as corrosion inhibitors in dishwashing detergents

摘要

Use as alkaline agents, for reducing visible corrosion of glass and deterioration of decorations on glass and porcelain, in detergent compsn. (partic. for use in dishwashers) of co-granules comprising an alkali metal carbonate (I) and alkali silicate nSiO2.M2O (II) is new. M = alkali metal, esp. Na or K; n = 1.6-3.5, pref. 1.6-2.4. The co-granules have wt. ratio (dry basis) (I):(II) of 45:55-80:20, pref. 60:40-75:25, with wt. ratio water:silicate (dry basis) at least 33:100, pref. 40-120:100.