Acidic limescale removal compositions

C - Chemistry – Metallurgy – 11 – D

Patent

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Details

C11D 7/26 (2006.01) C11D 1/94 (2006.01) C11D 3/02 (2006.01) C11D 3/20 (2006.01) C11D 3/34 (2006.01) C11D 3/37 (2006.01) C11D 7/32 (2006.01) C11D 7/34 (2006.01) C11D 1/22 (2006.01) C11D 1/90 (2006.01) C11D 1/92 (2006.01)

Patent

CA 2287967

The present invention relates to a liquid acidic composition suitable for removing limescale-containing stains from a hard-surface having a pH below 5, and comprising from 0.01 % to 20 % of the total composition of a sulfamic acid, from 0.01 % to 45 % by weight of the total composition of a second acid, and from 0.001 % to 10 % by weight of an acid-stable polymer selected from the group consisting of a polycarboxylate polymer, a sulphonated homopolymer of (poly) styrene, or a sulphonated copolymer of styrene with an ethylenically unsaturated comonomer, a vinylpyrrolidone homopolymer or copolymer, a polyalkoxylene glycol, and mixture thereof. These compositions provide improved shine to the surface treated as well as improved skin mildness to the user's skin while exhibiting effective limescale removal performance.

Cette invention concerne une composition acide liquide qui peut être utilisée afin d'éliminer des taches contenant du tartre sur des surfaces dures. Cette composition possède un pH inférieur à 5 et comprend de 0,01 à 20 % d'un acide sulfamique par rapport à son poids total, de 0,01 à 45 % d'un second acide par rapport à son poids total, et de 0,001 à 10 % en poids d'un polymère stable dans l'acide et choisi dans le groupe suivant: un polymère de polycarboxylate; un homopolymère sulfoné de (poly)styrène ou un copolymère sulfoné de styrène possédant un comonomère non saturé en éthylène; un homopolymère ou copolymère de vinylpyrrolidone; un glycol de polyalcoxylène; et des mélanges de ces éléments. Ces compositions confèrent un brillant amélioré aux surfaces ainsi traitées, ainsi qu'une plus grande douceur à la peau de l'utilisateur tout en conservant leur efficacité d'élimination du tartre.

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