US 12,129,448 B2
Water-soluble unit dose article containing a core/shell capsule
Andre Martim Barros, Woluwe Saint Etienne (BE); Mariana B. T. Cardoso, Brussels (BE); Johan Smets, Lubbeek (BE); Steven Daryl Smith, Fairfield, OH (US); Pierre Daniel Verstraete, Woluwe St Lambert (BE); Valerie Wong, Mason, OH (US); and Robby Renilde François Keuleers, Lippelo (BE)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Oct. 14, 2021, as Appl. No. 17/500,979.
Claims priority of provisional application 63/092,519, filed on Oct. 16, 2020.
Prior Publication US 2022/0119745 A1, Apr. 21, 2022
Int. Cl. C11D 17/04 (2006.01); C11D 3/37 (2006.01); C11D 3/50 (2006.01)
CPC C11D 17/043 (2013.01) [C11D 3/3753 (2013.01); C11D 3/50 (2013.01)] 19 Claims
 
1. A water-soluble unit dose article, wherein the water-soluble unit dose article comprises a water-soluble polyvinyl alcohol film and a laundry detergent composition, wherein the water-soluble film encloses the laundry detergent composition, wherein the laundry detergent composition comprises capsules, wherein the capsules have a core and a shell and wherein the shell surrounds the core;
wherein the core comprises a hydrophobic material;
wherein the shell comprises (a) a first shell component comprising a condensed layer and a nanoparticle layer, where the condensed layer comprises a condensation product of a precursor, and where the nanoparticle layer comprises inorganic nanoparticles, and where the condensed layer is disposed between the core and the nanoparticle layer, and (b) a second shell component surrounding the first shell component, where the second shell component surrounds the nanoparticle layer;
wherein the shell comprises between about 90% and about 100%, by weight of the shell of an inorganic material; and
wherein the capsules have a fracture strength between 1 MPa and 10 MPa.