	US 12,215,039 B2
	Synthesis, capping, and dispersion of TiO₂nanocrystals
Jason Allen Repac, Baltimore, MD (US); Serpil Gonen Williams, Baltimore, MD (US); Selina Thomas Monickam, Baltimore, MD (US); and Robert J. Wiacek, Baltimore, MD (US)
Assigned to PT SPE SUBCO LLC, Baltimore, MD (US)
Appl. No. 17/294,261
Filed by PIXELLIGENT TECHNOLOGIES LLC, Baltimore, MD (US)
PCT Filed Nov. 20, 2019, PCT No. PCT/US2019/062439 § 371(c)(1), (2) Date May 14, 2021, PCT Pub. No. WO2020/106860, PCT Pub. Date May 28, 2020.
Claims priority of provisional application 62/892,625, filed on Aug. 28, 2019.
Claims priority of provisional application 62/769,703, filed on Nov. 20, 2018.
Prior Publication US 2022/0017381 A1, Jan. 20, 2022
Int. Cl. C01G 23/08 (2006.01); C01G 23/053 (2006.01); C08J 5/18 (2006.01); C09D 133/08 (2006.01)

CPC C01G 23/08 (2013.01) [C01G 23/053 (2013.01); C08J 5/18 (2013.01); C09D 133/08 (2013.01); C01P 2002/72 (2013.01); C01P 2002/88 (2013.01); C01P 2004/04 (2013.01); C01P 2004/64 (2013.01); C08J 2333/08 (2013.01); C08J 2433/08 (2013.01)]

22 Claims

1. At least partially capped TiO2 nanocrystals comprising TiO₂nanocrystals at least partially capped with at least one capping agent selected from a silane, an alcohol, a carboxylic acid, a thiol, a sulfonate, a phosphonate, a phosphate, and combinations thereof, wherein the TiO₂nanocrystals have an average particle size of about 4 nm to about 50 nm as measured by TEM, wherein the TiO2 nanocrystals have anatase crystalline structure,

wherein the particle size distribution of the at least partially capped TiO2 nanocrystals is characterized by a D9999 of less than 500 nm as measured by volume by DLS when measured as a 5% dispersion in a solvent.