	US 12,359,087 B2
	Zwitterionic-doped hydrogels and anti-fogging coatings comprising the same
Peter Kim-Santos, Cambridge, MA (US); Sruti Balasubramanian, Quincy, MA (US); and Justin A Kleingartner, Boston, MA (US)
Assigned to ACTNANO, INC., Malden, MA (US)
Filed by ACTNANO, Cambridge, MA (US)
Filed on Sep. 2, 2022, as Appl. No. 17/929,389.
Claims priority of provisional application 63/240,629, filed on Sep. 3, 2021.
Prior Publication US 2023/0212416 A1, Jul. 6, 2023
Int. Cl. C09D 133/10 (2006.01); C08J 3/075 (2006.01); C08J 7/054 (2020.01); C08J 7/056 (2020.01); C08K 5/00 (2006.01); C08L 33/10 (2006.01)

CPC C09D 133/10 (2013.01) [C08J 3/075 (2013.01); C08J 7/054 (2020.01); C08J 7/056 (2020.01); C08K 5/00 (2013.01); C08L 33/10 (2013.01); C08L 2201/10 (2013.01)]

28 Claims

1. A composition for forming a hydrogel that imparts anti-fog properties to the hydrogel, the composition comprising:

charged monomers, at least a portion of which comprise zwitterionic monomers, and uncharged hydrophilic monomers,

wherein the charged monomers and the uncharged hydrophilic monomers contain reactive groups, which react to form said hydrogel having anti-fog properties,

wherein the hydrogel exhibits Δ Haze values of less than 5% when exposed to fog conditions.