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US 11,597,892 B2Granted
Method for washing hard article
AssigneeKao Corporation
InventorTakayuki Nomura
Life of this patent
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Abstract
The present invention provides a method for washing a hard article, the method including: the contact step of bringing a detergent liquid obtained by mixing (a) a potassium internal olefin sulfonate and (b) water having a hardness of 5° DH or more, into contact with the hard article, and the step of rinsing the hard article after the contact step with water having a hardness of 5° DH or more, wherein the detergent liquid at 30° C. or more is brought into contact with the hard article in at least a part of the contact step.
Claims14
A method for washing a hard article, the method comprising:
- 1) bringing a detergent liquid comprising (a) a potassium internal olefin sulfonate and (b) water having a hardness of 5° DH or more, into contact with the hard article for a period of time, and
- 2) rinsing the hard article after said period of time with water having a hardness of 5° DH or more, wherein
- the detergent liquid has a temperature of 30° C. or more for at least a part of the period of time.
Dependencies are inferred from the claim text.