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 using a water-soluble pouch, the pouch comprising a phosphate-free cleaning composition wherein the cleaning composition comprises loose powder and the composition comprises 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 water-soluble pouch, to water to form a wash liquor within said dishwasher, and contacting said soiled ware with said wash liquor, the pouch comprising a phosphate-free cleaning composition wherein the cleaning composition comprises loose powder and the composition comprises bleach, metal bleach catalyst and a complexing agent selected from the group consisting of methylglycine-N,N-diacetic acid (MGDA), 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, 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.