US 12,403,339 B2
Method and aqueous composition for preventing wildfire
Kimmo Saari, Oulu (FI)
Assigned to Xpyro Oy, Oulu (FI)
Appl. No. 17/297,555
Filed by Xpyro Oy, Oulu (FI)
PCT Filed Nov. 15, 2019, PCT No. PCT/FI2019/050822
§ 371(c)(1), (2) Date May 27, 2021,
PCT Pub. No. WO2020/109654, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 20186023 (FI), filed on Nov. 30, 2018.
Prior Publication US 2022/0040512 A1, Feb. 10, 2022
Int. Cl. A62C 3/02 (2006.01); A62C 27/00 (2006.01); A62D 1/00 (2006.01); B60C 29/06 (2006.01); C08L 1/02 (2006.01)
CPC A62C 3/0242 (2013.01) [A62C 27/00 (2013.01); A62D 1/005 (2013.01); A62D 1/0064 (2013.01); B60C 29/062 (2013.01); C08L 1/02 (2013.01); C08L 2201/02 (2013.01); C08L 2201/54 (2013.01)] 19 Claims
 
1. A method for preventing wildfire at a target by enhancing adhesion of a fire retardant to the target, the method comprising:
providing sprayable aqueous composition; and
applying the aqueous composition to the target by spraying;
wherein the aqueous composition comprises:
a fire retardant; and
a dispersion of fibrillar cellulose obtained through a fibrillation process of plant cellulose fibers, wherein the fibrillar cellulose has an average diameter of fibrils or fibril bundles of 2 μm or less, wherein the fibrillar cellulose has an average length of fibrils or fibril bundles of from 1 to 100 micrometers;
wherein the aqueous composition comprises the fibrillar cellulose in a range of 0.1-2% (w/w);
wherein the aqueous composition either:
does not include a surfactant; or
further comprises a surfactant in an amount of 0.1-0.5% (w/w);
wherein the target is an outside nature area; and
wherein the aqueous composition enhances adhesion of the fire retardant to the target.