	US 11,731,897 B2
	Sealing compositions
Michael Ian Budd, Oslo (NO)
Assigned to COORSTEK MEMBRANE SCIENCES AS, Oslo (NO)
Appl. No. 16/955,460
Filed by COORSTEK MEMBRANE SCIENCES AS, Oslo (NO)
PCT Filed Dec. 19, 2018, PCT No. PCT/EP2018/085926 § 371(c)(1), (2) Date Jun. 18, 2020, PCT Pub. No. WO2019/121972, PCT Pub. Date Jun. 27, 2019.
Claims priority of application No. 1721341 (GB), filed on Dec. 19, 2017.
Prior Publication US 2021/0139366 A1, May 13, 2021
Int. Cl. C03C 8/08 (2006.01); C03C 8/02 (2006.01); C03C 8/04 (2006.01); C03C 10/00 (2006.01); H01M 8/0282 (2016.01); H01M 8/1246 (2016.01); H01M 8/12 (2016.01)

CPC C03C 8/08 (2013.01) [C03C 8/02 (2013.01); C03C 8/04 (2013.01); C03C 10/0036 (2013.01); H01M 8/0282 (2013.01); H01M 8/1246 (2013.01); H01M 2008/1293 (2013.01); H01M 2300/0074 (2013.01)]

22 Claims

1. A glass precursor sealing composition comprising:

(I) 21-35 mol % Al₂O₃;

(II) 31-52 mol % CaO; and

25-45 mol% SiO₂;

said composition being free of B₂O₃; and

wherein the composition has an MgO content of 1 mol % or less and a ZnO content of 1 mol % or less.