	US 11,912,624 B2
	Fire resistant interlayer
Lucie Bussetti, L'Isle-Adam (FR); David Te Strake, Aachen (DE); and Jerome Korus, Aachen (DE)
Assigned to SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
Appl. No. 17/429,483
Filed by Saint-Gobain Glass France, Courbevoie (FR)
PCT Filed Feb. 11, 2020, PCT No. PCT/EP2020/053456 § 371(c)(1), (2) Date Aug. 9, 2021, PCT Pub. No. WO2020/165161, PCT Pub. Date Aug. 20, 2020.
Claims priority of application No. 19156501 (EP), filed on Feb. 11, 2019.
Prior Publication US 2022/0106231 A1, Apr. 7, 2022
Int. Cl. C04B 14/30 (2006.01); C04B 22/04 (2006.01); C04B 28/26 (2006.01); C04B 103/00 (2006.01); C04B 111/00 (2006.01); C04B 111/28 (2006.01)

CPC C04B 28/26 (2013.01) [C04B 14/30 (2013.01); C04B 22/04 (2013.01); C04B 2103/002 (2013.01); C04B 2111/00612 (2013.01); C04B 2111/28 (2013.01)]

15 Claims

1. A composition for preparation of a fire resistant interlayer comprising

an aqueous alkali silicate solution and

a silicon dioxide compound,

wherein the composition has a molar ratio of silicon dioxide (SiO2) to alkali metal oxide (M2O) of larger than 2,

wherein the composition comprises a stabilisation agent

wherein

the stabilisation agent comprises zinc (Zn),

whereby the composition comprises 0.0005 mol/kc to 0.003 mol/kc zinc.