	US 12,138,823 B2
	Fireproof water-resistant wood chip material and method of its production
Gabriela Chlandová, Borohrádek (CZ); and Petr Španiel, České Meziňči (CZ)
Assigned to First Point A.S., Hodonin (CZ)
Appl. No. 17/627,661
Filed by FIRST POINT A.S., Hodonin (CZ)
PCT Filed Jun. 9, 2020, PCT No. PCT/CZ2020/000026 § 371(c)(1), (2) Date Jan. 15, 2022, PCT Pub. No. WO2021/023319, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. CZPV2019-510 (CZ), filed on Aug. 6, 2019.
Prior Publication US 2022/0314486 A1, Oct. 6, 2022
Int. Cl. C09D 1/02 (2006.01); B27K 3/20 (2006.01); B27K 3/52 (2006.01); B27N 1/02 (2006.01); B27N 3/00 (2006.01); B27N 3/02 (2006.01); C09D 197/02 (2006.01); C09K 21/02 (2006.01)

CPC B27N 3/002 (2013.01) [B27K 3/20 (2013.01); B27K 3/52 (2013.01); B27N 1/0209 (2013.01); B27N 3/02 (2013.01); C09D 1/02 (2013.01); C09D 197/02 (2013.01); C09K 21/02 (2013.01); B27K 2240/30 (2013.01); B27K 2240/70 (2013.01)]

5 Claims

1. A fireproof water-resistant wood chip material to make oriented strand boards, comprising a mixture comprising

30 to 43 weight percent of wood chips,

53 to 61.9 weight percent of an aqueous solution of sodium silicate,

2 to 5 weight percent of aluminum hydroxide,

1 to 3 weight percent of water,

0.1 to 1 weight percent of a stabilizer of the aqueous solution of silicate, and

a hardener of the aqueous solution of sodium silicate in the concentration of 0.5 to 5 weight percent to the pure aqueous solution of sodium silicate,

wherein the density of the aqueous solution of sodium silicate ranges from 1370 to 1400 kg/m³, and

wherein the Si0₂to Na₂O molar ratio in the aqueous solution of sodium silicate ranges from 3.2 to 3.4.