US 11,981,605 B2
Two-component water-based cementitious adhesive with reduced viscosity
Ukiwo Onuoha, Bassersdorf (CH); Steffen Maier, Wettingen (CH); and Oscar Larsson, Lakewood, NJ (US)
Assigned to SIKA TECHNOLOGY AG, Baar (CH)
Appl. No. 17/051,158
Filed by SIKA TECHNOLOGY AG, Baar (CH)
PCT Filed May 3, 2018, PCT No. PCT/EP2018/061417
§ 371(c)(1), (2) Date Oct. 27, 2020,
PCT Pub. No. WO2019/210965, PCT Pub. Date Nov. 7, 2019.
Prior Publication US 2021/0238095 A1, Aug. 5, 2021
Int. Cl. C04B 28/14 (2006.01); C04B 22/14 (2006.01); C04B 24/02 (2006.01); C04B 24/26 (2006.01); C04B 24/32 (2006.01); C04B 40/00 (2006.01); C04B 103/00 (2006.01); C04B 103/40 (2006.01); C04B 111/00 (2006.01)
CPC C04B 28/14 (2013.01) [C04B 22/147 (2013.01); C04B 24/023 (2013.01); C04B 24/2623 (2013.01); C04B 24/2641 (2013.01); C04B 24/2676 (2013.01); C04B 24/32 (2013.01); C04B 40/0039 (2013.01); C04B 2103/0093 (2013.01); C04B 2103/406 (2013.01); C04B 2103/408 (2013.01); C04B 2111/00637 (2013.01); C04B 2111/00681 (2013.01)] 14 Claims
 
1. A two-component composition comprising:
A) a first component A, comprising, based on the total weight of component A:
a1) between 68 and 99.9 wt.-% of an aqueous dispersion of at least one polymer P, the aqueous dispersion of at least one polymer P comprising the polymer P with an amount of between 20 and 90 wt.-%, based on the weight of the dispersion;
a2) between 0 and 2 wt.-% of a nonionic or ionic dispersing agent D;
B) a second component B, comprising, based on the total weight of component B:
b1) between 10 and 30 wt.-% of a nonionic, non-aqueous liquid carrier LC,
b2) between 0 and 20 wt.-% of calcium sulfate,
b3) between 10 and 89.9 wt.-% of at least one hydraulic binder H,
b4) between 0 and 10 wt.-% of a thixotropy agent T;
wherein both components A and B are prepared and stored separately and mixed directly before application; and
with the proviso that the first component A furthermore comprises:
a3) between 0.1 and 15 wt.-% of a monovalent metal salt M,
and the second component B furthermore comprises:
b5) between 0.1 and 25 wt.-% of a polyamine PA.