Acidic limescale removal compositions
AssigneeThe Procter & Gamble Company
InventorsGiulia Ottavia Bianchetti, Elisabetta L. Russo, Luigi Pace
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Abstract
A liquid acidic composition having a sulfamic acid, a second acid, and an acid-stable polymer selected from the group consisting of a sulphonated polystyrene polymer, a vinylpyrrolidone homopolymer or copolymer, and mixtures thereof, to remove limescale-containing stains from a hard-surface.
Claims35
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 sulphonated polystyrene polymer, a vinylpyrrolidone homopolymer or copolymer, and mixtures thereof.
A method comprising the step of contacting a hard-surface with a liquid acidic composition comprising a sulfamic acid, a second acid, and an acid-stable polymer selected from the group consisting of a sulphonated polystyrene polymer, a vinylpyrrolidone homopolymer or copolymer, and mixtures thereof, to remove limescale-containing stains from a hard-surface, whereby long lasting shine is delivered to said surface after it has been first treated with said composition.
A method comprising the step of contacting a hard-surface with a liquid acidic composition comprising a sulfamic acid, a second acid, and an acid-stable polymer selected from the group consisting of a sulphonated polystyrene polymer, a vinylpyrrolidone homopolymer or copolymer, and mixtures thereof, suitable for removing limescale-containing stains from a hard-surface, to reduce the formation of limescale deposits on said hard-surface when it comes in contact with water, after said hard-surface has first been treated with said composition.
Dependencies are inferred from the claim text.