US 12,133,903 B2
Oral care article comprising a delivery carrier and solid hydrophilic particles comprising a bleaching agent
Paul Albert Sagel, Maineville, OH (US); and Jayanth Rajaiah, Loveland, OH (US)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Oct. 26, 2023, as Appl. No. 18/495,090.
Application 18/495,090 is a continuation of application No. 17/481,377, filed on Sep. 22, 2021, granted, now 11,826,437.
Claims priority of provisional application 63/093,513, filed on Oct. 19, 2020.
Claims priority of provisional application 63/093,518, filed on Oct. 19, 2020.
Claims priority of provisional application 63/093,523, filed on Oct. 19, 2020.
Claims priority of provisional application 63/093,536, filed on Oct. 19, 2020.
Claims priority of provisional application 63/093,529, filed on Oct. 19, 2020.
Prior Publication US 2024/0058226 A1, Feb. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61K 8/02 (2006.01); A61K 8/22 (2006.01); A61K 8/81 (2006.01); A61Q 11/00 (2006.01)
CPC A61K 8/0204 (2013.01) [A61K 8/0208 (2013.01); A61K 8/0233 (2013.01); A61K 8/22 (2013.01); A61K 8/8176 (2013.01); A61Q 11/00 (2013.01); A61K 2800/412 (2013.01); A61K 2800/56 (2013.01); A61K 2800/81 (2013.01); A61K 2800/88 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An oral care article comprising:
a) a solid hydrophobic delivery carrier in form of a strip having a length and a width forming a first surface and having a thickness extending from the first surface to a second surface, wherein an average thickness of the strip is from about 0.15 mm to about 1 mm; and
b) solid hydrophilic particles comprising a bleaching agent, wherein the solid hydrophilic particles release the bleaching agent upon contact with water,
wherein the solid hydrophilic particles are disposed in and embedded in the solid hydrophobic delivery carrier, wherein the solid hydrophilic particles are disposed i) at least partially below the first surface, and ii) at least partially at or above the first surface of the solid hydrophobic delivery carrier; and
wherein at least about 20 parts by weight of the particles dissolve in about 100 parts by weight of water and/or the particles increase in volume and/or weight by at least about 50% upon contact with water.