	US 11,939,258 B2
	Glass powder, dielectric material, sintered body, and high frequency circuit member
Yoshio Umayahara, Shiga (JP)
Assigned to NIPPON ELECTRIC GLASS CO., LTD., Shiga (JP)
Appl. No. 17/632,603
Filed by Nippon Electric Glass Co., Ltd., Shiga (JP)
PCT Filed Jun. 19, 2020, PCT No. PCT/JP2020/024088 § 371(c)(1), (2) Date Feb. 3, 2022, PCT Pub. No. WO2021/024620, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 2019-145899 (JP), filed on Aug. 8, 2019; and application No. 2020-083265 (JP), filed on May 11, 2020.
Prior Publication US 2022/0289622 A1, Sep. 15, 2022
Int. Cl. B32B 3/10 (2006.01); C03C 3/089 (2006.01); C03C 4/16 (2006.01); C03C 12/00 (2006.01); C03C 14/00 (2006.01); H01B 3/08 (2006.01); H01B 3/12 (2006.01)

CPC C03C 14/004 (2013.01) [C03C 3/089 (2013.01); C03C 4/16 (2013.01); C03C 12/00 (2013.01); H01B 3/087 (2013.01); H01B 3/12 (2013.01); C03C 2204/00 (2013.01); C03C 2214/04 (2013.01); C03C 2214/30 (2013.01)]

6 Claims

1. A glass powder, which is formed of alkali borosilicate glass, wherein the glass powder comprises 0.1 mol % to 1.0 mol %, provided that 1.0 mol % is excluded, of Li₂O+Na₂O+K₂O in a glass composition, has a molar ratio Li₂O/(Li₂O+Na₂O+K₂O) of from 0.35 to 0.65, a molar ratio Na₂O/(Li₂O+Na₂O+K₂O) of from 0.3 to 0.55, and a molar ratio K₂O/(Li₂O+Na₂O+K₂O) of from 0.025 to 0.15, and has a specific dielectric constant at 25° C. and 16 GHz of from 3.5 to 4.0 and a dielectric dissipation factor at 25° C. and 16 GHz of 0.0020 or less.