	US 11,673,840 B2
	Complex composite particles and methods
Arnold Hill, Orlando, FL (US); William Easter, Chuluota, FL (US); and Walter Sherwood, Oviedo, FL (US)
Assigned to Dynamic Material Systems LLC, Oviedo, FL (US)
Appl. No. 16/337,482
Filed by Dynamic Material Systems LLC, Oviedo, FL (US)
PCT Filed Oct. 26, 2017, PCT No. PCT/US2017/058616 § 371(c)(1), (2) Date Mar. 28, 2019, PCT Pub. No. WO2018/081477, PCT Pub. Date May 3, 2018.
Claims priority of provisional application 62/413,385, filed on Oct. 26, 2016.
Prior Publication US 2019/0345071 A1, Nov. 14, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. C04B 35/571 (2006.01); C04B 35/56 (2006.01); C04B 35/622 (2006.01); C04B 41/00 (2006.01); C04B 41/50 (2006.01); C09K 8/80 (2006.01)

CPC C04B 35/571 (2013.01) [C04B 35/5603 (2013.01); C04B 35/62222 (2013.01); C04B 41/0072 (2013.01); C04B 41/5059 (2013.01); C09K 8/805 (2013.01); C04B 2235/3895 (2013.01)]

14 Claims

1. A complex composite particle comprises a core comprised of a first material, wherein the first material is a pyrolyzed composite made of a coal dust derived from coal and a polymer precursor that forms a polymer derived ceramic material, the coal dust and the polymer precursor that forms the polymer derived ceramic, when pyrolyzed, being mixed together to form a mixture, the mixture being pyrolyzed in a substantially non-oxidizing atmosphere and transforming into a ceramic matrix composite, wherein the coal dust of the core is preheated at a temperature no greater than 400 degrees centigrade, prior to being mixed with the polymer precursor, to produce an in situ additive comprising carbon and organic compounds that vaporize and react when pyrolyzed in the presence of the polymer precursor, after being mixed with the polymer precursor, and the mixture of the in situ additive and the polymer precursor form the pyrolyzed composite during pyrolyzation.