US 11,912,962 B2
Flexible, porous, dissolvable solid sheet articles containing cationic surfactant
Dan Xu, Beijing (CN); Hongsing Tan, Beijing (CN); Juan Yang, Beijing (CN); Na Hou, Beijing (CN); Carl David Mac Namara, Beijing (CN); and Yongli Pan, Tianjin (CN)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Feb. 10, 2021, as Appl. No. 17/172,346.
Claims priority of application No. PCT/CN2020/076049 (WO), filed on Feb. 20, 2020.
Prior Publication US 2021/0261892 A1, Aug. 26, 2021
Int. Cl. C11D 17/06 (2006.01); C11D 1/29 (2006.01); C11D 1/38 (2006.01); C11D 1/62 (2006.01); C11D 1/835 (2006.01); C11D 3/20 (2006.01); C11D 3/22 (2006.01); C11D 3/37 (2006.01); C11D 17/04 (2006.01)
CPC C11D 17/06 (2013.01) [C11D 1/29 (2013.01); C11D 1/835 (2013.01); C11D 3/2065 (2013.01); C11D 3/2082 (2013.01); C11D 3/3753 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A process of making a solid sheet article, wherein the process comprises:
a) preparing a wet pre-mixture comprising a water-soluble polymer comprising polyvinyl alcohol, a plasticizer comprising glycerin, a cationic surfactant comprising diethyl ester dimethyl ammonium chloride, starch, and water, wherein the weight ratio of said plasticizer over said cationic surfactant is from 1.0 to 1.8;
b) aerating said wet pre-mixture to form an aerated wet pre-mixture;
c) forming said aerated wet pre-mixture into a sheet having opposing first and second sides; and
d) drying said formed sheet to make the solid sheet article.