Acidic aqueous liquid compositions

C - Chemistry – Metallurgy – 02 – F

Patent

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Details

C02F 5/12 (2006.01) C02F 5/14 (2006.01) C11D 3/02 (2006.01) C11D 3/36 (2006.01) C11D 3/39 (2006.01) C11D 7/36 (2006.01)

Patent

CA 2220516

The invention relates to acidic aqueous compositions comprising sulphuric acid, a chelating agent having a pKa not higher than 4, and at least 0.1 % by weight of the total composition of a surfactant. Preferred compositions therein further comprise a source of active oxygen, or mixtures thereof, and/or a thickening surfactant system such as a quaternary ammonium compound together with a short chain amine oxide. Said compositions are particularly suitable for the cleaning of toilet bowls providing thereby improved surface appearance to the surface cleaned.

L'invention porte sur des compositions acides aqueuses comprenant de l'acide sulfurique, un agent chélateur dont le pKa n'excède pas 4 et un tensioactif représentant au moins 0,1 % en poids de la composition totale. Des modes de réalisation préférés selon cette invention comprennent, en outre, une source d'oxygène actif ou des mélanges le comportant et/ou un système tensioactif épaississant tel qu'un composé d'ammonium quaternaire accompagné d'un oxyde d'amine à chaîne courte. Lesdites compositions conviennent tout particulièrement au nettoyage de cuvettes des cabinets auxquelles elles donnent meilleur aspect une fois nettoyées.

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