	US 12,410,304 B2
	PV module with film layer comprising hydrophilic fumed silica
Chao He, Shanghai (CN); Hong Yang, Shanghai (CN); Weiming Ma, Shanghai (CN); Yunfeng Yang, Shanghai (CN); Yuyan Li, Shanghai (CN); Brian M. Habersberger, Lake Jackson, TX (US); and Hongyu Chen, Shanghai (CN)
Assigned to Dow Global Technologies LLC, Midland, MI (US)
Appl. No. 17/599,186
Filed by Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Mar. 29, 2019, PCT No. PCT/CN2019/080466 § 371(c)(1), (2) Date Sep. 28, 2021, PCT Pub. No. WO2020/198953, PCT Pub. Date Oct. 8, 2020.
Prior Publication US 2022/0195157 A1, Jun. 23, 2022
Int. Cl. C08K 3/36 (2006.01); B32B 17/10 (2006.01); C08J 5/18 (2006.01); C08K 5/14 (2006.01); C08K 5/5419 (2006.01); C08K 9/06 (2006.01); C08L 23/0807 (2025.01); H10F 19/80 (2025.01)

CPC C08K 9/06 (2013.01) [B32B 17/10 (2013.01); B32B 17/10018 (2013.01); B32B 17/10614 (2013.01); B32B 17/10697 (2013.01); C08J 5/18 (2013.01); C08K 3/36 (2013.01); C08K 5/14 (2013.01); C08K 5/5419 (2013.01); C08L 23/0815 (2013.01); H10F 19/804 (2025.01); C08J 2323/06 (2013.01); C08L 2203/204 (2013.01)]

8 Claims

1. A photovoltaic module comprising:

a photovoltaic cell; and

a first film layer and an opposed second film layer, the photovoltaic cell secured between, and in direct contact with, the first film layer and the opposing second film layer, each film layer composed of a composition which is the reaction product of a composition comprising

(A) from 90 wt % to less than 100 wt % of an olefin-based polymer having a volume resistivity greater than 5.0*10¹⁵ohm·cm to 5.0*10¹⁶ohm·cm, the olefin-based polymer consisting of (i) ethylene and (ii) C₃-C₈α-olefin comonomer;

(B) from 0.01 wt % to 1.5 wt % of a hydrophilic fumed silica wherein the composition comprises the hydrophilic fumed silica to the exclusion of all other silicas;

(C) from 0.01 wt % to 2 wt % of an alkoxysilane selected from the group consisting of vinyltrimethoxysilane, (trimethoxysilyl)propylmethacrylate, and combinations thereof;

(D) from 0.1 wt % to 5.0 wt % of an organic peroxide; and

(E) from greater than 0 wt % to 1.5 wt % of a crosslinking co-agent,

wherein the film layer has a volume resistivity from 5.0*10¹⁷ohm·cm to 6.0*10¹⁸ohm·cm.