	US 12,319,627 B2
	Additives for cements comprising Ye'elimite
Patrick Juilland, Bern (CH); Emmanuel Gallucci, Zürich (CH); Arnd Eberhardt, Winterthur (CH); Luis Pegado, Brugg (CH); Letizia Caderas, Basel (CH); Denise Schönenberger, Kollbrunn (CH); and Lukas Frunz, Dietlikon (CH)
Assigned to SIKA TECHNOLOGY AG, Baar (CH)
Appl. No. 17/272,483
Filed by SIKA TECHNOLOGY AG, Baar (CH)
PCT Filed Nov. 22, 2019, PCT No. PCT/EP2019/082320 § 371(c)(1), (2) Date Mar. 1, 2021, PCT Pub. No. WO2020/109186, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 18208374 (EP), filed on Nov. 26, 2018.
Prior Publication US 2021/0323880 A1, Oct. 21, 2021
Int. Cl. C04B 40/00 (2006.01); C04B 22/14 (2006.01); C04B 24/10 (2006.01); C04B 24/16 (2006.01); C04B 24/26 (2006.01); C04B 28/18 (2006.01); C04B 40/06 (2006.01); C04B 103/10 (2006.01); C04B 103/22 (2006.01)

CPC C04B 40/0039 (2013.01) [C04B 22/141 (2013.01); C04B 24/10 (2013.01); C04B 24/16 (2013.01); C04B 24/2694 (2013.01); C04B 28/188 (2013.01); C04B 40/0658 (2013.01); C04B 2103/10 (2013.01); C04B 2103/22 (2013.01)]

11 Claims

1. A cementitious binder comprising

a) at least one clinker based on Ye′elimite,

b) at least one set retarder S selected from the group consisting of sugar acids, sugars, sugar alcohols, hydroxycarboxylic acids, phosphates, phosphonates, borates, and amines, and

c) at least one regulator R of the general formula (I)

where:

M is H, NH₄or chosen from a monovalent or divalent metal of the groups Ia, IIa, IIIa, Ib, IIb, IVb, VIb, VIIb or VIIIb of the periodic table of elements, and, where M is a divalent metal, a second equivalent of R—SO₃is present, and

R is chosen from NH₂, OH or from a hydrocarbon group with 1 C atom which may be substituted by N and/or O.