Automatic dishwashing method
AssigneeThe Procter & Gamble Company
InventorsNevena Lukic, Nilgun Esin Aksoy Abaci, Patrick Firmin August Delplancke, Serdar Acikalin
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Abstract
A method of cleaning soiled ware in a dishwasher, the method having the step of delivering a phosphate-free cleaning composition using a multi-dosing system, the composition comprising bleach, metal bleach catalyst and a complexing agent and wherein the complexing agent is slowly released as compared to the bleach catalyst.
Claims14
A method of cleaning soiled ware in a dishwasher, using a program comprising a cleaning cycle of length t, the method comprising the step of delivering a phosphate-free cleaning composition using a multi-dosing system to water to form a wash liquor within said dishwasher, and contacting said soiled ware with said wash liquor, the composition comprising bleach, metal bleach catalyst and a complexing agent selected from the group consisting of methylglycine-N,N-diacetic acid (MGDA), citric acid, glutamic acid-N,N-diacetic acid (GLDA), iminodisuccinic acid (IDS), citric acid, aspartic acid —N,N-diacetic acid (ASDA), their salts and mixtures thereof and wherein:
- i) at least 90% by weight of the bleach catalyst is delivered into the cleaning cycle in less than 1/10 t;
- and
- ii) at least 50% by weight of the complexing agent is delivered into the cleaning cycle later than ½ t, where t is considered to be the time from the moment in which the pouch is delivered into the cleaning cycle until the time when the wash liquor is drained and t is at least 10 minutes.
Dependencies are inferred from the claim text.