	US 12,227,450 B2
	Stucco properties through aging at elevated temperatures and high humidity level
Stephan Dietz, Pretzfeld (DE); Alexander Hartmann, Kleinlangheim (DE); Thomas Fraser, Altona (AU); Manfred Baier, Iphofen-Nenzenheim (DE); Sebastian Förthner, Fürth (DE); Stergios Karakoussis, Laubach (DE); Georgi Paraskov, Nuremberg (DE); and Reiner Schneiderbanger, Knetzgau (DE)
Assigned to Knauf Gips KG, Iphofen (DE)
Appl. No. 16/636,604
Filed by Knauf Gips KG, Iphofen (DE)
PCT Filed Aug. 4, 2017, PCT No. PCT/EP2017/000946 § 371(c)(1), (2) Date Feb. 4, 2020, PCT Pub. No. WO2019/024971, PCT Pub. Date Feb. 7, 2019.
Prior Publication US 2020/0385309 A1, Dec. 10, 2020
Int. Cl. C04B 11/00 (2006.01); C04B 28/14 (2006.01); C04B 103/50 (2006.01); C04B 111/00 (2006.01); C04B 111/60 (2006.01)

CPC C04B 11/007 (2013.01) [C04B 28/145 (2013.01); C04B 2103/50 (2013.01); C04B 2111/0062 (2013.01); C04B 2111/00672 (2013.01); C04B 2111/60 (2013.01)]

7 Claims

1. Method for stabilizing stucco wherein

a fresh stucco is provided at a temperature of at least 50° C.;

water is added to the fresh stucco to obtain moistened stucco, and

maintaining the moistened stucco at a temperature of at least 75° C. and less than 90° C. for a time interval of at least 30 min and less than 24 hours to obtain a stabilized stucco, wherein water is added to the fresh stucco in an amount such that the stabilized stucco contains free moisture in an amount of less than 3 wt. %, based on the weight of the stabilized stucco, and wherein no heating of the moistened stucco using an external device occurs.