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US 6,648,983 B1Granted
Process of cleaning enamel surfaces
AssigneeThe Procter & Gamble Company
InventorsSergio Cardola, Panos Iakovides, Laura Orlandini, Maria Rosa Rescio
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Abstract
A process of cleaning an enamel surface with a liquid acidic composition comprising an enamel safe buffering system, wherein said buffering system comprises a salt having an anion selected from the group consisting of hydroxide and carbonate; and a cation that has an ionic radius larger than 115 pm; with the proviso that no ethers of diethylene glycol are present in said composition.
Claims8
A process of cleaning a hard surface found in households wherein said surface is coated with enamel, said process comprising the steps of:
- locating a household article having a hard surface coated with enamel;
- and
- contacting said enamel surface with a liquid acidic composition prepared by admixing a source of acidity with an enamel safe buffering system wherein said buffering system comprises a salt having an anion selected from the group consisting of hydroxide and carbonate and a cation that has an ionic radius larger than 115 pm;
- with the proviso that no ethers of diethylene glycol and no sodium ions are present in said composition;
- and wiping said surface and rinsing said surface.
2 more elements
Dependencies are inferred from the claim text.