US 12,344,765 B2
Icephobic surfaces and methods of producing the same
Stephen Hsu, Germantown, MD (US); and Govindaiah Patakamuri, Ashburn, VA (US)
Assigned to THE GEORGE WASHINGTON UNIVERSITY, Washington, DC (US)
Appl. No. 18/019,714
Filed by The George Washington University, Washington, DC (US)
PCT Filed Aug. 11, 2021, PCT No. PCT/US2021/045550
§ 371(c)(1), (2) Date Feb. 3, 2023,
PCT Pub. No. WO2022/035964, PCT Pub. Date Feb. 17, 2022.
Claims priority of provisional application 63/064,145, filed on Aug. 11, 2020.
Prior Publication US 2024/0209220 A1, Jun. 27, 2024
Int. Cl. C09D 183/04 (2006.01); C09D 5/16 (2006.01); C09D 7/40 (2018.01); C09D 7/62 (2018.01); C08G 77/04 (2006.01); C08G 77/24 (2006.01)
CPC C09D 5/1681 (2013.01) [C09D 7/62 (2018.01); C09D 7/67 (2018.01); C09D 7/68 (2018.01); C09D 183/04 (2013.01); C08G 77/045 (2013.01); C08G 77/24 (2013.01)] 29 Claims
OG exemplary drawing
 
1. An icephobic substrate comprising:
a base substrate having a first surface with a disordered surface texture, the disordered surface comprising a plurality of multiscale watersheds; and
an icephobic coating on the first surface of the base substrate, the icephobic coating comprising:
nanoparticles on the disordered surface texture;
carbon nanotubes bound to the nanoparticles; and
fluorinated polyhedral oligomeric silsesquioxane (POSS) compounds located in and/or on the carbon nanotubes; wherein
the icephobic substrate has a plurality of flowpaths for the movement of solids and/or liquids relative to the icephobic coating.