US 11,987,993 B2
Floor covering comprising UV-detectable primer
Vera Ubbenhorst, Gescher (DE); Tobias Benighaus, Münster (DE); and Rosalin Wevering, Münster (DE)
Assigned to SIKA TECHNOLOGY AG, Baar (CH)
Filed by SIKA TECHNOLOGY AG, Baar (CH)
Filed on Oct. 6, 2021, as Appl. No. 17/495,309.
Claims priority of application No. 20200419 (EP), filed on Oct. 6, 2020.
Prior Publication US 2022/0106797 A1, Apr. 7, 2022
Int. Cl. E04F 15/10 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01)
CPC E04F 15/107 (2013.01) [B32B 27/08 (2013.01); B32B 27/308 (2013.01); B32B 2255/26 (2013.01); B32B 2419/04 (2013.01); B32B 2471/00 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A floor structure on a base comprising a primer and a floor covering which is atop the primer and comprises a floor coating and/or an adhesive bond, characterized in that the primer is obtained from an aqueous dispersion of at least one acrylic polymer containing 0.001-0.2% by weight of at least one benzoxazole-based system, based on the total weight of the aqueous dispersion,
wherein
the aqueous dispersion has a viscosity one day after production of less than 3000 mPas, measured with a Brookfield DV1 viscometer with spindle 4 at 20 rpm at 23° C. and a particle size of 10-70 nm, and the primer has a penetration depth into the base of 1-10 mm, or
the aqueous dispersion has a viscosity one day after production of greater than 3000 mPas measured with a Brookfield DV1 viscometer with spindle 4 at 20 rpm at 23° C. and a particle size of 80-150 nm, and the primer has a dry layer thickness of 0.05-0.5 mm.