Hoechst Aktiengesellschaft

Lothar Westermann

Hannsjorg Ulrich

Horst-Dieter Wasel-Nielen

Franz-Josef Dany

Werner Klose

G/u/ Nter Sorbe

A dishwashing agent consists of a crystalline, largely water-insoluble sodium layer silicate having a molar ratio of SiO.sub.2 /Na.sub.2 O of (1.9 to 3.5):1 in combination with a proton donor, a 0.5% strength by weight aqueous solution of the dishwashing agent having a pH of less than 10. The dishwashing agent can furthermore contain a surfactant, an active chlorine or active oxygen carrier, a dispersing agent, an alkali metal phosphate or an alkali metal polyphosphate and a filler.

Dishwashing agent

A rinsing composition free from phosphate contains as a builder a crystalline layer sodium silicate of the general formula NaMSi.sub.x O.sub.2x+1.y H.sub.2 O, in which M is sodium or hydrogen, x is a number of 1.9-4 and y is a number of 0-20, in admixture with a co-builder which is a polymeric and/or copolymeric carboxylic acid or a salt of said acid.

Rinsing composition free from phosphate

Dimensionally stable alkaline cleansing agents of low density consist at least of 2 to 50% by weight of alkali metal phosphates, 2 to 50% by weight of silicates and 1 to 60% by weight of alkali metal hydroxides and/or alkali metal carbonates or bicarbonates and additionally contain 0.25 to 10% by weight of phosphoric acid partial esters. These cleansing agents are prepared by first foaming phosphoric acid partial esters with water in a weight ratio of (1:2) to (1:80), using intensive stirring. When the remaining components have been incorporated into the foam, using stirring or kneading, the resulting mixture is converted to moldings. The moldings are allowed to set for 0.5 to 15 hours.

Dimensionally stable alkaline cleansing agents of low density, and a

The invention relates to a composition suitable for use in cleaning panes of glass, consisting of a pelleted blend of surfactants, the composition containing:

Method for cleaning a glass surface with solutions of dissolved pelleted

The invention provides a composition suitable for use in cleaning panes of glass consisting of a substantially homogeneous surfactant and binder containing blend, in the form of a hardened moulding, the blend containing:

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Cologne, Germany

Lothar Westermann