The invention relates to a thickened aqueous composition incorporating an amine or diamine, carrying at least one nitrogen linked hydrocarbon group which represents a saturated or unsaturated linear or branched alkyl group having at least 10 carbon atoms and preferably 16-24 carbon atoms or an aryl, aralkyl or alkaryl group containing up to 24 carbon atoms, and wherein the optional other nitrogen linked groups are formed by optionally substituted alkyl groups, aryl groups or aralkyl groups or polyalkoxy groups, or wherein the amine is in the form of a heterocyclic ring, con­taining at least two nitrogen atoms, one of which being substituted by amino (lower) alkyl or hydroxy (lower) alkyl, while the ring is further bearing a linear or branched alkyl or alkenyl preferably reacted with fatty acids, or alkenyl group having at least 10 carbon atoms;
cumene sulphonate, xylene sulphonate, toluene sulphonate or mixtures thereof, in their acid or salt form; and
a weak acid having a pK value > 2,0; and
water, wherein optionally one or more cleaning desinfecting and/or odourizing agents may be dissolved or dispersed.
The invention also relates to premix compositions composed of above-men­tioned amines and sulphonates, from which the thickened aqueous composi­tions can be prepared by dilution with water or an aqueous solution or suspension and to a process for cleaning non-horizontal surfaces.