	US 12,234,353 B2
	Low density polyvinyl chloride microparticles
Christopher Scilla, Broadview Heights, OH (US); and Viswanathan Narayan, Strongsville, OH (US)
Assigned to Mexichem Specialty Resins Inc., Avon Lake, OH (US)
Filed by Mexichem Specialty Resins Inc., Avon Lake, OH (US)
Filed on Sep. 15, 2021, as Appl. No. 17/475,864.
Claims priority of provisional application 63/079,930, filed on Sep. 17, 2020.
Prior Publication US 2022/0081545 A1, Mar. 17, 2022
Int. Cl. C08L 27/06 (2006.01); B01J 13/14 (2006.01); B01J 13/20 (2006.01)

CPC C08L 27/06 (2013.01) [B01J 13/14 (2013.01); B01J 13/206 (2013.01); C08L 2205/20 (2013.01); C08L 2207/32 (2013.01); C08L 2312/02 (2013.01)]

18 Claims

1. A composition of matter comprising hollow polymer microparticles with a Dn average particle size in their largest dimension ranging from about 15 to about 200 micrometers comprising polyvinyl chloride and having a volumetric density of less than about 0.6 g/cm³, wherein the polymer microparticles have a polyvinyl chloride shell and a hollow core.