Water-soluble glass as corrosion protector in dishwashing machines
AssigneeReckitt Benckiser N.V.
InventorKarlheinz Ulrich Gerhard Hahn
Life of this patent
Estimating the term…
Abstract
A zinc-containing, water-soluble glass composition comprising from 41 to 54 mole % of P2O5, 10 to 30 mole % of alkali oxides, up to 5 mole % of SO3 and up to 25 mole % of ZnO.
Claims6
A process for the inhibition of corrosion of glassware in an automatic dishwashing process which comprises the step of contacting the glassware with a zinc-containing, water-soluble glass composition comprising from 41 to 54 mole % of P2O5, 10 to 30 mole % of alkali metal oxides, up to 5 mole % of SO3 and up to 25 mole % of ZnO.
A process for the inhibition of corrosion of glassware in an automatic dishwashing process comprising providing a zinc-containing, water-soluble glass composition comprising from 41 to 54 mole % of P2O5, 10 to 30 mole % of alkali metal oxides, up to 5 mole % of SO3 and up to 25 mole % of ZnO at an appropriate place within an automatic dishwashing machine wherein the composition is accessible to the wash liquor and/or rinse water.
Dependencies are inferred from the claim text.