Storage stable liquid fugitive colored fire-retardant concentrates
AssigneePerimeter Solutions LP
InventorsMelissa KIM, Marcela MUNOZ, Howard L. VANDERSALL, Juan ROBLES
Life of this patent
Estimating the term…
Abstract
This disclosure relates to fugitive color systems and storage-stable fugitive colored liquid long-term fire retardant compositions comprising a fugitive color system. The fugitive color system comprises a fugitive color pigment. In particular, disclosed herein is the identification of fugitive color pigments exhibiting hydrophilic or diminished hydrophobic tendencies. And, in certain aspects, the fugitive color pigment is fluorescent.
Claims18
1-76. (canceled)
A method for preparing a storage-stable liquid fire-retardant concentrate, the method comprising:
- combining a liquid fire-retardant component and a fugitive color system, the fugitive color system comprising a fugitive pigment, wherein:
- the liquid fire-retardant component comprises at least one ammonium phosphate, the at least one ammonium phosphate having a molar ratio of ammoniacal nitrogen to phosphorus (N/P ratio) in a range of from about 1.1 to about 1.9;
- the fugitive pigment is formaldehyde-free and comprises a fluorescent dye encapsulated within a polymeric material and is characterized by a surface free energy of at least about 45 and a polar component value of at least about 20;
- and
- the liquid fire-retardant concentrate exhibits a substantially constant storage stability for at least 7 days.
A method of preparing a fire retardant composition adapted for aerial application to wildland fuels and wildland fires, the method comprising the steps of:
- (a) forming an intermediate storage-stable liquid concentrate composition comprising at least (i) a liquid fire retardant component comprised of at least one ammonium polyphosphate, (ii) a fugitive pigment exhibiting hydrophilic behavior and/or that is a hydrophilic fugitive pigment, and (iii) and optionally other functional components;
- (b) dilution of the liquid composition with water to form a fire-retardant solution;
- (c) applying the fire-retardant solution on wildland fuels threatened by fire and/or
- (d) applying the fire-retardant solution on the periphery of the fuel:fire interface, resulting in a reduction in fire intensity.
Dependencies are inferred from the claim text.