	US 11,850,293 B2
	Active agent-containing matrix particles and processes for making same
Mark William Hamersky, Cincinnati, OH (US); and Stephen Robert Glassmeyer, Cincinnati, OH (US)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Sep. 19, 2019, as Appl. No. 16/575,437.
Claims priority of provisional application 62/881,965, filed on Aug. 2, 2019.
Claims priority of provisional application 62/734,473, filed on Sep. 21, 2018.
Prior Publication US 2020/0093711 A1, Mar. 26, 2020
Int. Cl. A61K 8/02 (2006.01); A61K 8/898 (2006.01); A61Q 13/00 (2006.01); C11D 3/37 (2006.01); C11D 3/50 (2006.01); C11D 17/04 (2006.01); C11D 3/12 (2006.01); C11D 11/00 (2006.01)

CPC A61K 8/0283 (2013.01) [A61K 8/027 (2013.01); A61K 8/0275 (2013.01); A61K 8/0279 (2013.01); A61K 8/898 (2013.01); A61Q 13/00 (2013.01); C11D 3/124 (2013.01); C11D 3/3742 (2013.01); C11D 3/3753 (2013.01); C11D 3/3776 (2013.01); C11D 3/505 (2013.01); C11D 11/0017 (2013.01); C11D 17/044 (2013.01)]

17 Claims

1. A matrix particle comprises one or more uncross-linked matrix materials derived from a water-soluble polymer exhibiting a weight average molecular weight of at least 40,000 g/mol to about 40,000,000 g/mol, wherein the water-soluble polymer is selected from the group consisting of: polyvinyl alcohol, polysaccharides, gums, gelatin, dextrins, polyethylene glycols, gum arabic, larch, pectin, tragacanth, locust bean, guar, alginates, carrageenans, cellulose gums, karaya, polyacrylic acid, polyvinylpyrrolidone, polyacrylamide, and mixtures thereof and one or more hydrophobic active agents comprising a silicone and a perfume;

wherein the matrix particle comprises one or more pores;

wherein the silicone and perfume are present in the one or more pores;

wherein the matrix particle exhibits a perfume leakage of less than or equal to 20% according to the Analysis of Free Perfume in Perfume Matrix Particles described herein.