US 12,352,675 B2
Extrudable compositions comprising fillers and devices made from the compositions
Eric Alan Bruton, Lake St. Louis, MO (US); and Loyal Bruce Shawgo, O'Fallon, MO (US)
Assigned to THE BOEING COMPANY, Arlington, VA (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Apr. 21, 2021, as Appl. No. 17/236,554.
Application 17/236,554 is a division of application No. 16/404,297, filed on May 6, 2019, granted, now 11,022,533.
Prior Publication US 2021/0396640 A1, Dec. 23, 2021
Int. Cl. G01N 15/0227 (2024.01); G01N 15/02 (2024.01); G02B 5/20 (2006.01); G02B 5/22 (2006.01)
CPC G01N 15/0227 (2013.01) [G02B 5/206 (2013.01); G02B 5/22 (2013.01); G01N 2015/0277 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A filter, comprising:
a support substrate; and
a film disposed on the support substrate, the film comprising a polymer matrix material and a filler,
wherein the filler comprises a plurality of particles with a particle size distribution configured to filter a desired range of wavelengths of light, the particle size distribution having been achieved by extrusion, the filler having an average particle size ranging from about 1 nm to about 700 nm,
wherein 90% to 100% of the plurality of particles have a particle size within 10% of an average target particle size, and
wherein the polymer matrix material comprises at least one polymer chosen from polycarbonates, Polyethylene terephthalate (“PET”), Polyethylene (“PE”), acrylate polymers, vinyl polymers, polyvinylbutyral (“PVB”) and a PVB copolymer, the PVB copolymer comprising polyvinylbutyral units and one or more of polyvinyl alcohol units and polyvinyl acetate units.