US 11,679,066 B2
Dissolvable solid fibrous articles containing anionic surfactants
Brian Xiaoqing Song, Mason, OH (US); Jennifer Elaine Hilvert, Cincinnati, OH (US); Min Mao, Deerfield Township, OH (US); Dinah Achola Nyangiro, Mason, OH (US); Brandon Michael Taylor, Erlanger, KY (US); and Mark William Hamersky, Hamilton, OH (US)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Jun. 26, 2020, as Appl. No. 16/912,876.
Claims priority of provisional application 62/928,415, filed on Oct. 31, 2019.
Claims priority of provisional application 62/867,990, filed on Jun. 28, 2019.
Prior Publication US 2020/0405587 A1, Dec. 31, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. A61K 8/02 (2006.01); A61K 8/73 (2006.01); A61K 8/41 (2006.01); A61K 8/81 (2006.01)
CPC A61K 8/027 (2013.01) [A61K 8/0216 (2013.01); A61K 8/416 (2013.01); A61K 8/731 (2013.01); A61K 8/732 (2013.01); A61K 8/8129 (2013.01); A61K 2800/10 (2013.01); A61K 2800/30 (2013.01); A61K 2800/5426 (2013.01)] 19 Claims
 
1. A dissolvable solid fibrous shampoo article comprising fibrous elements comprising:
a. from about 1% to about 50%, by weight on a dry article basis of a polymeric structurant;
b. from about 10% to about 90%, by weight on a dry article basis, of a surfactant system comprising a primary anionic surfactant and one or more co-surfactants; wherein the primary anionic surfactant comprises a glutamate surfactant;
wherein the surfactant system is free of sulfate-based surfactants; and
c. optionally a cationic polymer comprising a weight average molecular weight from about 100,000 g/mol to about 2.5 million g/mol as measured by gel permeation chromatography and a charge density of greater than 0.5 meg/g as measured according to the Charge Density Test Method;
wherein the fibrous article is substantially free of a lamellar structure as determined by the Lamellar Structure Test Method in a conditioned, dry state;
wherein the fibrous article comprises a hand dissolution of less than 15 strokes according to the Hand Dissolution Test Method;
wherein the fibrous elements comprise filaments;
wherein the plurality of fibrous elements are inter-entangled or otherwise associated with one another to form the fibrous structure.