	US 12,258,486 B2
	Composition for coating and sealing the edges of wood fibre boards
Norbert Kalwa, Horn-Bad Meinberg (DE); and Andreas Gier, Mandelbachtal (DE)
Assigned to Flooring Technologies Ltd., Kalkara (MT)
Appl. No. 17/260,589
Filed by Flooring Technologies Ltd., Kalkara (MT)
PCT Filed Jul. 15, 2019, PCT No. PCT/EP2019/068998 § 371(c)(1), (2) Date Jan. 15, 2021, PCT Pub. No. WO2020/016176, PCT Pub. Date Jan. 23, 2020.
Claims priority of application No. 18183673 (EP), filed on Jul. 16, 2018.
Prior Publication US 2021/0324228 A1, Oct. 21, 2021
Int. Cl. C09D 175/04 (2006.01); B05D 7/06 (2006.01); C09D 7/61 (2018.01); C09D 7/63 (2018.01)

CPC C09D 175/04 (2013.01) [B05D 7/06 (2013.01); C09D 7/61 (2018.01); C09D 7/63 (2018.01); B05D 2203/20 (2013.01); B05D 2401/20 (2013.01); B05D 2503/00 (2013.01)]

16 Claims

1. A composition for sealing/coating the edges of wood-fibre boards, obtained from

at least one compound of general formula (I)

SiX₄ (I),

wherein

X is alkoxy, and

at least three compounds of general formula (II)

R₂SiX₃ (II),

wherein

X is alkoxy,

R²is a C1-C10 alkyl moiety or a C6-C10 aryl moiety,

wherein the ratio of the at least one compound of general formula (I) to the at least three compounds of general formula (II) is between 1:0.5 and 1:2;

at least one aqueous polymer dispersion, wherein the at least one polymer is selected from the group comprising polyurethanes, epoxy resins, melamine resins, and/or polyacrylates; and

inorganic particles selected from the group consisting of SiO₂, Al₂O₃, ZrO₂, TiO₂, and mixtures thereof,

wherein the inorganic particles comprise 0.1 to 10% by weight of the composition based upon the total weight of the composition.