US 12,343,410 B2
Multilayer dissolvable solid article containing coating composition and process for making the same
Hongsing Tan, Beijing (CN); Carl David MacNamara, Beijing (CN); Min Jiang, Beijing (CN); Zhaoqi Fan, Beijing (CN); Robert Wayne Glenn, Jr., Singapore (SG); Dan Xu, Beijing (CN); and Zeying Huang, Berkeley, CA (US)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Oct. 19, 2020, as Appl. No. 17/073,586.
Claims priority of application No. PCT/CN2019/113065 (WO), filed on Oct. 24, 2019.
Prior Publication US 2021/0121373 A1, Apr. 29, 2021
Prior Publication US 2024/0197579 A9, Jun. 20, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C11D 1/00 (2006.01); A61K 8/02 (2006.01); A61K 8/34 (2006.01); A61K 8/365 (2006.01); A61K 8/46 (2006.01); A61K 8/49 (2006.01); A61K 8/81 (2006.01); A61Q 5/00 (2006.01); B32B 5/32 (2006.01); B32B 27/06 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); C11D 1/22 (2006.01); C11D 1/29 (2006.01); C11D 1/72 (2006.01); C11D 1/83 (2006.01); C11D 3/20 (2006.01); C11D 3/37 (2006.01); C11D 3/43 (2006.01); C11D 3/50 (2006.01); C11D 17/04 (2006.01); C11D 17/06 (2006.01); C11D 1/14 (2006.01)
CPC A61K 8/0208 (2013.01) [A61K 8/345 (2013.01); A61K 8/365 (2013.01); A61K 8/463 (2013.01); A61K 8/466 (2013.01); A61K 8/4946 (2013.01); A61K 8/8129 (2013.01); A61Q 5/00 (2013.01); B32B 27/08 (2013.01); B32B 27/306 (2013.01); C11D 1/83 (2013.01); C11D 3/2065 (2013.01); C11D 3/3753 (2013.01); C11D 17/044 (2013.01); A61K 2800/87 (2013.01); B32B 2250/02 (2013.01); B32B 2250/246 (2013.01); B32B 2255/10 (2013.01); B32B 2255/24 (2013.01); B32B 2307/7166 (2013.01); C11D 1/146 (2013.01); C11D 1/22 (2013.01); C11D 1/72 (2013.01); C11D 2111/12 (2024.01)] 17 Claims
OG exemplary drawing
 
1. A dissolvable solid article comprising two or more flexible, porous, dissolvable sheets, wherein:
each of said two or more sheets comprises a water-soluble polymer and a first surfactant and is characterized by a Percent Open Cell Content of from about 80% to about 100% and an Overall Average Pore Size of from about 100 μm to about 2000 μm;
the dissolvable solid article has an outer surface;
a coating composition comprising a second surfactant is present on at least one surface of at least one of said two or more sheets, provided that said coating composition is not on any of the outer surfaces of the dissolvable solid article; and
the second surfactant comprises a C12-C14 ethoxylated alcohol and the coating composition further comprises a perfume and dipropylene glycol.