US 12,466,922 B2
Film extrusion composition and associated extruded film, metallized film, and capacitor
Andrew Thomas Pingitore, Evansville, IN (US); James Alan Mahood, Evansville, IN (US); and Matthew Frank Niemeyer, North Chatham, NY (US)
Assigned to SHPP GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
Appl. No. 18/695,508
Filed by SHPP GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
PCT Filed Jun. 30, 2022, PCT No. PCT/IB2022/056121
§ 371(c)(1), (2) Date Mar. 26, 2024,
PCT Pub. No. WO2023/047198, PCT Pub. Date Mar. 30, 2023.
Claims priority of application No. 21199122 (EP), filed on Sep. 27, 2021.
Prior Publication US 2024/0409693 A1, Dec. 12, 2024
Int. Cl. C08G 77/448 (2006.01); B29C 48/00 (2019.01); B29C 48/08 (2019.01); H01G 4/18 (2006.01); H01G 4/32 (2006.01); B29K 83/00 (2006.01); B29L 31/34 (2006.01)
CPC C08G 77/448 (2013.01) [B29C 48/022 (2019.02); B29C 48/08 (2019.02); H01G 4/18 (2013.01); H01G 4/32 (2013.01); B29K 2083/00 (2013.01); B29L 2031/34 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A film extrusion composition comprising, based on the total weight of the film extrusion composition:
50 to 99.35 weight percent of a copolycarbonate comprising, based on 100 mole percent total carbonate units in the copolycarbonate,
20 to 60 mole percent of first carbonate units having the structure

OG Complex Work Unit Chemistry
 wherein R1 is a C6-C16 divalent aromatic group;
40 to 80 mole percent of second carbonate units having the structure

OG Complex Work Unit Chemistry
 wherein R2 is a C17-C40 divalent aromatic group having the structure

OG Complex Work Unit Chemistry
 wherein Rf and Rg are each independently at each occurrence C1-C12 alkyl, C1-C12 alkoxyl, or C2-C12 alkenyl; each Rh is hydrogen or two occurrence of Rh combine with the carbon atom to which they are attached to form a carbonyl group; each occurrence of Ri is independently C1-C6 alkyl; Rj is hydrogen, C1-C6 alkyl, or phenyl optionally substituted with 1, 2, 3, 4, or 5 C1-C6 alkyl groups; Rk is independently at each occurrence C1-C3 alkyl or phenyl, preferably methyl; Xb is C6-C12 arylene, C4-C18 cycloalkylene, C4-C18 cycloalkylidene, or —C(Rm)(Rn)— wherein Rm is hydrogen, C1-C12 alkyl, or C6-C12 aryl, and Rn is C6-C10 alkyl, C6-C8 cycloalkyl, or C6-C12 aryl, or Xb is -(Qa)x-G-(Qb)y-, wherein Qa and Qb are each independently C1-C3 alkylene, G is C3-C10 cycloalkylene, x is zero or 1, and y is zero or 1; and j, m, and n are each independently zero, 1, 2, 3, or 4; and
0 mole percent of third carbonate units, each third carbonate unit comprising a divalent carbonate group and a divalent polysiloxane group, the divalent polysiloxane group comprising 5 to 60 diorganosiloxane units having the structure

OG Complex Work Unit Chemistry
 wherein each occurrence of R3 is independently a C1-C13 hydrocarbyl group;
0.1 to 6 weight percent of a slip agent selected from the group consisting of pentaerythritol tetrastearate, dipentaerythritol hexastearate, glycerol tristearate, high density polyethylenes, polymethylpentenes, poly(carbonate-siloxane) s, and combinations thereof; and
0.55 to 0.8 weight percent of a particulate crosslinked polymethylsilsesquioxane having a number-based mean equivalent spherical diameter of 0.5 to 4 micrometers determined by electrical sensing zone method according to ISO 13319-1:2021.