	US 12,303,575 B2
	Film-forming composition containing surfactant or surfactant and salt as whitening agent
Kaori Sato, Kawasaki (JP); Takahisa Takubo, Ayase (JP); and Hitomi Doi, Kawasaki (JP)
Assigned to Capsugel Belgium NV, Bornem (BE)
Filed by Capsugel Belgium NV, Bornem (BE)
Filed on Sep. 21, 2023, as Appl. No. 18/371,163.
Application 18/371,163 is a continuation of application No. 17/253,103, granted, now 11,801,205, previously published as PCT/JP2019/026430, filed on Jul. 3, 2019.
Claims priority of application No. 2018-127350 (JP), filed on Jul. 4, 2018; and application No. 2019-036083 (JP), filed on Feb. 28, 2019.
Prior Publication US 2024/0058225 A1, Feb. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61K 8/02 (2006.01); A61K 8/11 (2006.01); A61K 8/37 (2006.01); A61K 8/46 (2006.01); A61K 8/65 (2006.01); A61K 8/73 (2006.01); A61K 8/86 (2006.01)

CPC A61K 8/0204 (2013.01) [A61K 8/11 (2013.01); A61K 8/37 (2013.01); A61K 8/46 (2013.01); A61K 8/65 (2013.01); A61K 8/731 (2013.01); A61K 8/86 (2013.01); A61K 2800/10 (2013.01); A61K 2800/26 (2013.01); A61K 2800/43 (2013.01); A61K 2800/594 (2013.01); A61K 2800/92 (2013.01)]

21 Claims

1. A film, comprising:

a film-forming polymer that is a cellulose derivative; and

a whitening agent that includes either a surfactant or both a surfactant and a water-soluble salt,

wherein the surfactant is a fatty acid ester of polyhydric alcohol, a polyethylene glycol, a polypropylene glycol, and/or a polyalkylene oxide derivative; and

wherein whiteness of the film is adjusted by a total amount of the surfactant within a range from 0.5 parts by weight to 30 parts by weight while an amount, in dry weight, of the film-forming polymer is defined as 100 parts by weight.