US 12,391,828 B2
Polymer-ceramic composite articles with low dissipation factor and high dielectric constant, and core-shell particle powders and processes for making such articles
Devendra Narayandas Bajaj, Bergen op Zoom (NL); Christopher Anthony Grabowski, Bergen op Zoom (NL); Viswanathan Kalyanaraman, Bergen op Zoom (NL); and Johannes De Brouwer, Bergen op Zoom (NL)
Assigned to SHPP GLOBAL TECHNOLOGIES B.V., (NL)
Filed by SHPP GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
Filed on Jun. 15, 2021, as Appl. No. 17/347,678.
Claims priority of application No. 20180089 (EP), filed on Jun. 15, 2020.
Prior Publication US 2021/0388206 A1, Dec. 16, 2021
Int. Cl. C08L 79/08 (2006.01); C08K 3/22 (2006.01)
CPC C08L 79/08 (2013.01) [C08K 3/22 (2013.01); C08K 2003/2241 (2013.01); C08L 2207/53 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A ceramic-polymer composite powder, the powder comprising:
a plurality of core-shell particles, where:
each of the core-shell particles comprises a core and a shell around the core;
the core comprises a particle of a ceramic selected from the group consisting of:
BaTiO3, SrTiO3, TiO2, CaTiO3, MgTiO3, and combinations of any two or more thereof; and
the shell comprises a polymer selected from the group of polymers consisting of:
polyetherimide (PEI), polyetherimide (PEI) copolymers, polyphenylene ether (PPE), polyphenylene sulfide (PPS), polyaryl ether ketone (PAEK), polypropylene (PP), polytetrafluoroethylene (PTFE), perfluoroalkoxy alkane (PF A), fluorinated ethylene propylene (FEP), ethylene tetrafluoroethylene (ETFE), polyvinylidene fluoride (PVDF), and ethylene chlorotrifluoroethylene (ECTFE);
where the core-shell particles comprise between 50% and 90% by volume of ceramic, and between 10% and 50% by volume of the polymer;
where the core-shell particles have a Dv50 of from 50 nanometers (nm) to 100 micrometers (μm); and
where substantially all of the polymer is not cross-linked; and
where the core-shell particles are in powder form.