	US 12,404,476 B2
	Method of laundering fabric
Carlos Amador Zamarreno, Newcastle upon Tyne (GB); Anju Deepali Massey Brooker, Newcastle upon Tyne (GB); Laura Bueno Romo, Newcastle upon Tyne (GB); Andre Chieffi, Tynemouth (GB); and Andrew Philip Moon, South Shields (GB)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Apr. 6, 2022, as Appl. No. 17/714,172.
Application 17/714,172 is a continuation of application No. PCT/US2020/070624, filed on Oct. 7, 2020.
Claims priority of application No. 19202072 (EP), filed on Oct. 8, 2019.
Prior Publication US 2022/0228090 A1, Jul. 21, 2022
Int. Cl. C11D 3/00 (2006.01); C11D 3/386 (2006.01); C11D 3/395 (2006.01); C11D 3/42 (2006.01); C11D 3/50 (2006.01); D06L 1/08 (2006.01)

CPC C11D 3/0063 (2013.01) [C11D 3/001 (2013.01); C11D 3/3951 (2013.01); C11D 3/42 (2013.01); C11D 3/505 (2013.01); D06L 1/08 (2013.01); C11D 2111/12 (2024.01); C11D 2111/44 (2024.01)]

9 Claims

1. A method of laundering fabric, wherein the method comprises the steps of:

(a) in a main washing step, washing soiled fabric with an aqueous wash bath comprising detersive surfactant and photo-bleach; and

(b) in a rinsing step, rinsing the soiled fabric with an aqueous rinsing solution comprising perfume and optionally one or more of the following components: brighteners, hueing dyes, enzymes and any combination thereof,

wherein an artificial light source is present and turned on during the main washing step (a) and provides light to the wash liquor in such a manner that activates the photo-bleach present in the wash liquor,

and wherein the artificial light source is turned off during the rinsing step (b) and does not provide any light to the aqueous rinsing solution.