US 12,234,317 B2
Polyurethane composition for the manufacture of floors, especially for marine applications
Marcel Ras, Raalte (NL); and Ronald Borkent, Deventer (NL)
Assigned to SIKA TECHNOLOGY AG, Baar (CH)
Appl. No. 17/629,136
Filed by SIKA TECHNOLOGY AG, Baar (CH)
PCT Filed Aug. 27, 2020, PCT No. PCT/EP2020/073993
§ 371(c)(1), (2) Date Jan. 21, 2022,
PCT Pub. No. WO2021/037992, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 19193877 (EP), filed on Aug. 27, 2019.
Prior Publication US 2022/0289899 A1, Sep. 15, 2022
Int. Cl. C08G 18/79 (2006.01); B63B 3/48 (2006.01); C04B 26/16 (2006.01); C08G 18/36 (2006.01); C08G 18/48 (2006.01); C08G 18/66 (2006.01); C09D 175/08 (2006.01); C04B 111/00 (2006.01); C04B 111/60 (2006.01)
CPC C08G 18/792 (2013.01) [B63B 3/48 (2013.01); C04B 26/16 (2013.01); C08G 18/36 (2013.01); C08G 18/4829 (2013.01); C08G 18/6696 (2013.01); C09D 175/08 (2013.01); C04B 2111/0056 (2013.01); C04B 2111/60 (2013.01)] 12 Claims
 
1. A method for applying a polyurethane composition, as a flooring material,
wherein the polyurethane composition comprises:
A) a polyol component (A) comprising at least one polyol; and
B) a hardener component (B) comprising at least one polyisocyanate,
wherein the polyurethane composition further comprises 0.5-8 wt. % of hollow glass microspheres, based on a total weight of the polyurethane composition,
wherein the method comprises:
a) providing a space where the polyurethane composition is to be applied;
b) mixing components (A) and (B) of the polyurethane composition to obtain a mixed polyurethane composition;
c) applying the mixed polyurethane composition on a desired location and in a desired shape within the space provided;
d) allowing the applied mixed polyurethane composition to cure; and
e) mechanically treating a surface of the cured polyurethane composition, by grinding the surface of the cured polyurethane composition to remove a thickness of the cured polyurethane composition from the surface, 5-50%, of the thickness of the cured polyurethane composition.