Patent ID: 11938362
Assignee: TYCO FIRE PRODUCTS LP
Field: Machine tools (Mechanical engineering)
Classification: CPC A | IPC A

Claim 15:
16. A method of making a firefighting foam concentrate, the method comprising:
forming a suspension agent by blending microfibrous cellulose with a solvent at sufficient shear to disperse fibers of the microfibrous cellulose in the solvent;
blending the suspension agent with:
a sugar component comprising at least 50 wt. % of a monosaccharide sugar, a sugar alcohol, or a mixture of any two or more thereof;
a polysaccharide thickener;
a surfactant component comprising an anionic, surfactant and a zwitterionic surfactant;
a water-miscible organic solvent comprising a glycol, a glycol ether, a glycerol, or a mixture of any two or more thereof; and

wherein the firefighting foam concentrate is substantially free of non-ionic surfactants.