	US 12,077,651 B2
	Getter composition and dispensable paste comprising said getter composition
Stefano Zilio, Bareggio (IT); Anna Nuzzo, Maddaloni (IT); Giovanni Zafarana, Milan (IT); Giorgio Macchi, Gallarate (IT); and Paolo Vacca, Milan (IT)
Assigned to SAES GETTERS S.P.A., Lainate (IT)
Appl. No. 18/273,600
Filed by SAES GETTERS S.P.A., Lainate (IT)
PCT Filed Nov. 24, 2022, PCT No. PCT/EP2022/083095 § 371(c)(1), (2) Date Jul. 21, 2023, PCT Pub. No. WO2023/099326, PCT Pub. Date Jun. 8, 2023.
Claims priority of application No. 102021000030299 (IT), filed on Nov. 30, 2021.
Prior Publication US 2024/0067798 A1, Feb. 29, 2024
Int. Cl. C08L 63/00 (2006.01); C08K 3/34 (2006.01); C08K 11/00 (2006.01); C08L 63/02 (2006.01); C08L 63/04 (2006.01)

CPC C08K 3/34 (2013.01) [C08K 11/00 (2013.01); C08L 63/00 (2013.01); C08K 2201/005 (2013.01); C08L 2203/20 (2013.01)]

14 Claims

1. A dispensable paste, comprising:

an epoxy resin; and

a getter composition comprising a blend of a first getter powder and a second getter powder, wherein:

the first getter powder is polyphenylene oxide (PPO) or poly(2,6-diphenyl-p-phenylene oxide) (PPPO);

the second getter powder is a Faujasite (FAU) zeolite or a mixture of a Faujasite (FAU) zeolite and a Linde Type A (LTA) zeolite having a weight ratio FAU to LTA of 0.1 to 5.0;

a weight ratio of the first getter powder to the second getter powder is 0.1 to 5.0; and

the getter powders have a particle size distribution X₉₀of 1.0 to 50.0 μm;

and wherein:

the resin, including any curing agent, is present in an amount of 50 to 90 wt % based on a total weight of the paste; and

the getter composition is present in an amount of 10 to 50 wt % based on the total weight of the paste.

12. The dispensable paste according to claim 1, wherein the first getter powder is polyphenylene oxide (PPO) and the second getter powder is a mixture of Faujasite (FAU) zeolite and Linde Type A (LTA) zeolite having a weight ratio FAU to LTA of 0.1 to 5.0.