	US 12,454,628 B2
	Aqueous dispersion of single phase crosslinked microspheres and film-forming polyurethane particles
Ibrahim Eryazici, Phoenixville, PA (US); Joseph Hoefler, Perkiomenville, PA (US); Nick Nicholas, Newark, DE (US); and Edwin A. Nungesser, Horsham, PA (US)
Assigned to Rohm and Haas Company, Collegeville, PA (US)
Appl. No. 17/922,808
Filed by Rohm and Haas Company, Collegeville, PA (US)
PCT Filed May 27, 2021, PCT No. PCT/US2021/034386 § 371(c)(1), (2) Date Nov. 2, 2022, PCT Pub. No. WO2021/247341, PCT Pub. Date Dec. 9, 2021.
Claims priority of provisional application 63/034,654, filed on Jun. 4, 2020.
Prior Publication US 2023/0174817 A1, Jun. 8, 2023
Int. Cl. C09D 175/04 (2006.01); C08L 75/04 (2006.01); C09D 7/40 (2018.01)

CPC C09D 175/04 (2013.01) [C08L 75/04 (2013.01); C09D 7/69 (2018.01); C09D 7/70 (2018.01)]

11 Claims

1. A composition comprising an aqueous dispersion of a) film-forming polymer particles comprising polyurethane polymer particles and having a z-average particle size in the range of from 50 nm to 500 nm, as determined by dynamic light scattering, and a T_gof less than 10° C.; and b) non-film-forming single phase crosslinked polymeric microspheres having a median weight average particle size in the range of from 2 μm to 30 μm and a T_gof not greater than 10° C.