US 11,771,939 B2
Fire-fighting foam composition with microfibrous cellulose
JoAnna M. Monfils, Peshtigo, WI (US); John P. Libal, Peshtigo, WI (US); and Blake H. Bomann, Greenville, WI (US)
Assigned to Tyco Fire Products LP, Cranston, RI (US)
Filed by Tyco Fire Products LP, Lansdale, PA (US)
Filed on Apr. 18, 2022, as Appl. No. 17/722,978.
Claims priority of provisional application 63/297,384, filed on Jan. 7, 2022.
Claims priority of provisional application 63/288,024, filed on Dec. 10, 2021.
Claims priority of provisional application 63/288,020, filed on Dec. 10, 2021.
Claims priority of provisional application 63/288,026, filed on Dec. 10, 2021.
Claims priority of provisional application 63/245,028, filed on Sep. 16, 2021.
Claims priority of provisional application 63/215,006, filed on Jun. 25, 2021.
Claims priority of provisional application 63/188,633, filed on May 14, 2021.
Prior Publication US 2022/0362606 A1, Nov. 17, 2022
Int. Cl. A62D 1/02 (2006.01); A62C 99/00 (2010.01); A62D 1/00 (2006.01)
CPC A62D 1/0071 (2013.01) [A62C 99/0036 (2013.01); A62D 1/0042 (2013.01)] 16 Claims
 
1. A method of fighting a fire, the method comprising:
forming a foam comprising an aqueous firefighting composition; and
applying the foam directly or indirectly to the fire;
wherein the aqueous fire-fighting composition comprises:
a sugar component;
a polysaccharide thickener;
a surfactant component comprising an anionic surfactant, a zwitterionic surfactant, or a mixture of any two or more thereof;
a suspension agent comprising microfibrous cellulose; and
at least about 30 wt. % water;
wherein: one or more components of the aqueous fire-fighting composition is at least partially insoluble in the aqueous fire-fighting composition and wherein the composition is substantially free of non-ionic surfactants.