US 12,281,223 B2
Piezoelectric composite material and method
Meghna Markanday, Bangalore (IN); Pradeep Singh, Bangalore (IN); Venkata Ramanarayanan Ganapathy Bhotla, Bangalore (IN); Nandini D R, Bangalore (IN); and Suresh Velate, Bangalore (IN)
Assigned to SABIC Global Technologies B.V., Bergen op Zoom (NL)
Appl. No. 18/007,413
Filed by SABIC Global Technologies B.V., Bergen op Zoom (NL)
PCT Filed Jul. 7, 2021, PCT No. PCT/IB2021/056064
§ 371(c)(1), (2) Date Jan. 30, 2023,
PCT Pub. No. WO2022/034390, PCT Pub. Date Feb. 17, 2022.
Claims priority of provisional application 63/063,499, filed on Aug. 10, 2020.
Prior Publication US 2023/0331972 A1, Oct. 19, 2023
Int. Cl. C08L 27/16 (2006.01); C08J 3/21 (2006.01); C08J 5/18 (2006.01); C08K 3/22 (2006.01); H10N 30/092 (2023.01); H10N 30/85 (2023.01)
CPC C08L 27/16 (2013.01) [C08J 3/212 (2013.01); C08J 5/18 (2013.01); C08K 3/22 (2013.01); H10N 30/092 (2023.02); H10N 30/852 (2023.02); C08J 2327/16 (2013.01); C08J 2401/02 (2013.01); C08K 2003/2244 (2013.01); C08K 2201/001 (2013.01); C08L 2203/16 (2013.01); C08L 2203/20 (2013.01); C08L 2205/16 (2013.01)] 18 Claims
 
1. A piezoelectric composite material comprising a cellulosic material and an inorganic piezoelectric material dispersed in a piezoelectric polymer, the piezoelectric polymer having a dielectric constant from 10 or more, wherein the cellulosic material is cellulosic fibers having a length from 5 μm to 100 μm and a width from 5 μm to 40 μm.