US 12,168,760 B2
Particulate laundry scent additive comprising a perfume/water-soluble polymer/salt hydrate matrix
Jaden Scott Zerhusen, Florence, KY (US)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Feb. 8, 2024, as Appl. No. 18/436,784.
Application 18/436,784 is a continuation of application No. 17/970,802, filed on Oct. 21, 2022.
Application 17/970,802 is a continuation of application No. PCT/US2021/070424, filed on Apr. 20, 2021.
Claims priority of application No. 20170543 (EP), filed on Apr. 21, 2020.
Prior Publication US 2024/0182819 A1, Jun. 6, 2024
Int. Cl. C11D 9/10 (2006.01); C11D 1/72 (2006.01); C11D 1/722 (2006.01); C11D 3/04 (2006.01); C11D 3/37 (2006.01); C11D 3/50 (2006.01)
CPC C11D 3/505 (2013.01) [C11D 1/72 (2013.01); C11D 1/722 (2013.01); C11D 3/046 (2013.01); C11D 3/3707 (2013.01)] 26 Claims
 
1. A composition comprising a plurality of particles, each of said particles comprising:
A) a water-soluble polymer;
B) from about 1% to about 40% by weight of said particles of a salt hydrate selected from sodium acetate trihydrate, magnesium sulfate heptahydrate, and combinations thereof;
C) from about 0.5% to about 5% by weight of said particles of an acid selected from citric acid, formic acid, and mixtures thereof; and
D) from about 0.1% to about 20% by weight of said particles of perfume; wherein said perfume is dispersed in a matrix of said water soluble polymer and said salt hydrate; wherein said particles have at least one substantially flat surface and an opposite curved surface; and wherein said particles have a volume from about from about 0.003 cm3 to about 0.5 cm3.