US 12,129,454 B2
Laundry detergent sheet with microcapsules
Hongsing Tan, Beijing (CN); Ming Tang, Beijing (CN); Mark Robert Sivik, Mason, OH (US); and Frank William Denome, Cincinnati, OH (US)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on May 8, 2023, as Appl. No. 18/313,572.
Application 17/077,345 is a division of application No. 15/888,115, filed on Feb. 5, 2018, abandoned.
Application 18/313,572 is a continuation of application No. 17/077,345, filed on Oct. 22, 2020, granted, now 11,680,232.
Claims priority of application No. PCT/CN2017/072927 (WO), filed on Feb. 6, 2017.
Prior Publication US 2023/0272312 A1, Aug. 31, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C11D 11/00 (2006.01); C11D 1/37 (2006.01); C11D 1/83 (2006.01); C11D 3/22 (2006.01); C11D 3/37 (2006.01); C11D 3/50 (2006.01); C11D 17/00 (2006.01); C11D 17/04 (2006.01); C11D 17/06 (2006.01); C11D 1/14 (2006.01); C11D 1/22 (2006.01); C11D 1/24 (2006.01); C11D 1/72 (2006.01)
CPC C11D 3/505 (2013.01) [C11D 1/37 (2013.01); C11D 1/83 (2013.01); C11D 3/222 (2013.01); C11D 3/3707 (2013.01); C11D 3/3753 (2013.01); C11D 11/0082 (2013.01); C11D 17/0039 (2013.01); C11D 17/044 (2013.01); C11D 17/06 (2013.01); C11D 1/146 (2013.01); C11D 1/22 (2013.01); C11D 1/24 (2013.01); C11D 1/72 (2013.01); C11D 2111/12 (2024.01)] 19 Claims
 
1. A method of making a non-fibrous laundry detergent sheet comprising dispensing a microcapsule onto a precursor non-fibrous laundry detergent sheet, wherein the precursor non-fibrous laundry detergent sheet comprises: (a) at least one surfactant; (b) at least one film former; and wherein said non-fibrous laundry detergent sheet has a thickness ranging from 0.1 mm to 10 mm, wherein the microcapsule is dispensed at a temperature of about ±30° C. of the temperature of the precursor laundry detergent sheet, and wherein the microcapsule is dispensed at a temperature of about 50° C. to about 100° C.