US 12,480,355 B2
Glass panel unit, getter material, getter material composition, and method for manufacturing glass panel unit
Hiroyuki Abe, Osaka (JP); Eiichi Uriu, Osaka (JP); Tasuku Ishibashi, Ishikawa (JP); Kazuya Hasegawa, Osaka (JP); Masataka Nonaka, Osaka (JP); Takeshi Shimizu, Osaka (JP); and Naoki Kosugi, Kyoto (JP)
Assigned to Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Appl. No. 17/922,937
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Apr. 26, 2021, PCT No. PCT/JP2021/016576
§ 371(c)(1), (2) Date Nov. 2, 2022,
PCT Pub. No. WO2021/225083, PCT Pub. Date Nov. 11, 2021.
Claims priority of application No. 2020-082839 (JP), filed on May 8, 2020; and application No. 2020-191933 (JP), filed on Nov. 18, 2020.
Prior Publication US 2023/0167671 A1, Jun. 1, 2023
Int. Cl. E06B 3/66 (2006.01); C03C 27/06 (2006.01); E06B 3/677 (2006.01)
CPC E06B 3/6612 (2013.01) [C03C 27/06 (2013.01); E06B 3/6775 (2013.01); C03C 2201/06 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A glass panel unit comprising:
a first glass pane;
a second glass pane facing the first glass pane;
a frame member hermetically bonding the first glass pane and the second glass pane;
an evacuated space surrounded with the first glass pane, the second glass pane, and the frame member; and
a gas adsorbent placed in the evacuated space, wherein:
the gas adsorbent contains a getter material for adsorbing nitrogen and carbon dioxide,
the getter material contains a hydrogenation catalyst and a plurality of particles of a zeolite crystal,
the zeolite crystal is a copper ion-exchanged ZSM-5 type zeolite,
the getter material contains a powder of the hydrogenation catalyst in a weight ratio of 0.0001 to 0.3 part relative to 1 part of the plurality of particles of the zeolite crystal,
at least one particle accounting for a half or more of a total weight of the plurality of particles has a particle size equal to or greater than 200 nm,
an activable temperature of the at least one particle is equal to or lower than 400° C.