Storage stable liquid fugitive colored fire-retardant concentrates
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.
1 . A liquid fire-retardant concentrate, the concentrate comprising a liquid fire-retardant component and a fugitive color system, the fugitive color system comprising a fugitive pigment, wherein:
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, and 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.
2 . The liquid fire-retardant concentrate of claim 1 wherein the at least one ammonium phosphate comprises monoammonium phosphate (MAP) and diammonium phosphate (DAP).
3 . The liquid fire-retardant concentrate of claim 2 wherein the weight ratio of MAP to DAP is in the range of from about 5% to about 60% MAP to about 40% to about 95% DAP of the total ammonium phosphate in the concentrate.
4 . The liquid fire-retardant concentrate of claim 2 wherein the weight ratio of MAP to DAP is in the range of from about 40% to about 60% MAP to about 40% to about 60% DAP of the total ammonium phosphate in the concentrate.
5 . The liquid fire-retardant concentrate of claim 2 wherein the at least one ammonium phosphate comprising MAP and DAP has a molar ratio of ammoniacal nitrogen to phosphorus (N/P ratio) in a range of from about 1.3 to about 1.7.
6 . The liquid fire-retardant concentrate of claim 1 wherein the concentrate further comprises one or more components selected from the group consisting of a suspending agent, a corrosion inhibiting agent, a biopolymer, and mixtures thereof.
7 . The liquid fire-retardant concentrate of claim 6 wherein the concentrate comprises a suspending agent comprising micronized clay.
8 . The liquid fire-retardant concentrate of claim 6 wherein the concentrate comprises a corrosion inhibitor selected to inhibit corrosion of aluminum, steel, brass, or magnesium.
9 . The liquid fire-retardant concentrate of claim 6 wherein the concentrate comprises a biopolymer comprising xanthan, rhamsan, or welan.
10 . A fire-retardant solution, the fire-retardant solution comprising the liquid fire-retardant concentrate of claim 1 and water.
11 . A method for preparing a fire-retardant solution, the method comprising diluting the liquid fire-retardant concentrate of claim 1 with water.
12 . A liquid fire-retardant concentrate, the concentrate comprising a liquid fire-retardant component and a fugitive color system, the fugitive color system comprising a fugitive pigment, wherein:
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, and wherein:
the liquid fire-retardant component comprises at least one ammonium phosphate selected from the group consisting of monoammonium phosphate (MAP), diammonium phosphate (DAP), ammonium polyphosphate (APP), and mixtures thereof;
the composition further comprising a suspending agent and a corrosion inhibiting agent.
13 . The liquid fire-retardant concentrate of claim 12 wherein the concentrate comprises a suspending agent comprising micronized clay.
14 . The liquid fire-retardant concentrate of claim 12 wherein the concentrate comprises a corrosion inhibiting agent selected to inhibit corrosion of aluminum, steel, brass, or magnesium.
15 . The liquid fire-retardant concentrate of claim 12 wherein the concentrate further comprises a biopolymer comprising xanthan, rhamsan, or welan.