Automatic dishwashing method
AssigneeThe Procter & Gamble Company
InventorsNathalie Sophie LETZELTER, Shari Joy SOPER, Sylvan AMOS, Kristopher L. DELGADO, Elliott STOWE, Sarah GALEA
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Abstract
A method of washing dishware in a dishwasher comprising the step of delivering into the dishwasher: a) a first composition comprising oxygen bleach and substantially free of enzymes; followed by b) a second composition comprising enzymes wherein the first composition has a pH of at least 11 and the pH of the first composition is at least 1 pH unit greater the pH of the second composition wherein the pH is measured at wash concentration at 20° C.
Claims20
A method of washing dishware in a dishwasher comprising the step of delivering into the dishwasher:
- a) a first composition comprising oxygen bleach and substantially free of enzymes;
- followed by
- b) a second composition comprising enzymes
- wherein the first composition has a pH of at least 11 and the pH of the first composition is at least 1 pH unit greater the pH of the second composition wherein the pH is measured at wash concentration at 20° C.
An automatic dishwashing product comprising three independent compositions:
- first, intermediate and second composition to be dosed sequentially in the following order:
- first, intermediate and second composition wherein the first composition comprises oxygen bleach and is substantially free of enzymes and capable of providing a wash pH of at least 11, the intermediate composition is capable of lowering the pH of the first composition by at least 1 pH unit and the second composition comprises enzymes.
A dishwasher, the dishwasher comprising:
- a main wash cycle;
- and
- at least one rinse cycle,
- wherein the main wash cycle includes a plurality of introductions of chemistry compositions comprising a first composition comprising oxygen bleach and substantially free of enzymes and a second composition comprising enzymes, wherein the first composition has a pH of at least 11 and the pH of the first composition is at least 1 pH unit greater the pH of the second composition wherein the pH is measured at wash concentration at 20° C.
Dependencies are inferred from the claim text.