WO2020006648A1 - Ammonium polyphosphate based and diammonium phosphate based fire-retardant compositions - Google Patents

Ammonium polyphosphate based and diammonium phosphate based fire-retardant compositions Download PDF

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WO2020006648A1
WO2020006648A1 PCT/CA2019/050936 CA2019050936W WO2020006648A1 WO 2020006648 A1 WO2020006648 A1 WO 2020006648A1 CA 2019050936 W CA2019050936 W CA 2019050936W WO 2020006648 A1 WO2020006648 A1 WO 2020006648A1
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fire
retardant composition
agent
corrosion inhibiting
composition includes
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PCT/CA2019/050936
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French (fr)
Inventor
Terrence KENNEDY
Mike ROBERGE
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X'aan Innovations Inc.
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Publication of WO2020006648A1 publication Critical patent/WO2020006648A1/en

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K21/00—Fireproofing materials
    • C09K21/02—Inorganic materials
    • C09K21/04—Inorganic materials containing phosphorus
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
    • C23F11/187—Mixtures of inorganic inhibitors
    • C23F11/188—Mixtures of inorganic inhibitors containing phosphates

Definitions

  • the present invention relates to fire-retardant compositions and, in particular, to ammonium polyphosphate based fire-retardant compositions and diammonium phosphate based fire-retardant compositions comprising potassium ferricyanide and/or potassium ferrocyanide.
  • ammonium polyphosphate based fire-retardant compositions and diammonium phosphate based fire-retardant compositions to combat wildland fires.
  • ammonium polyphosphate and diammonium phosphate are corrosive and may damage equipment used to produce, store, handle, and apply the fire- retardant composition.
  • corrosion inhibiting agents which reduce the corrosivity of ammonium polyphosphate based fire-retardant compositions and diammonium phosphate based fire-retardant compositions.
  • Ammonium polyphosphate based fire-retardant compositions and diammonium phosphate based fire- retardant compositions may also include a coloring agent, a suspending agent, a surfactant, a thickening agent, or any combination thereof.
  • United States Patent No. 3,960,735 which issued on July 1, 1976, to Lacey discloses a composition consisting essentially of an ammonium polyphosphate liquid and an iron cyanide blue.
  • the iron cyanide blue being is in a minor amount effective to substantially reduce the corrosiveness of said composition to aluminum to less than or equal to 1 mil per year as determined by the "Uniform Corrosion" test set forth in Section
  • United States Patent No. 4,176,071 which issued on November 27, 1979, to Couch discloses a corrosion inhibitor mixture for ammonium sulfate fire-retardant compositions.
  • the fire-retardant compositions generally comprise ammonium sulfate, a thickening agent, and water.
  • the corrosion inhibitor mixture comprises a water-soluble cyanide compound and a water-soluble ortho-phosphate compound.
  • the components of the corrosion inhibitor mixture are present in the fire-retardant compositions in a minor effective amount at least sufficient to inhibit the corrosivity of the fire retardant composition to aluminum, mild steel, and brass to less than 1 mil per year.
  • an ammonium polyphosphate based fire-retardant composition comprising an ammonium polyphosphate, a suspending agent, a coloring agent, a surfactant, an emulsifier, a thickening agent, and a corrosion inhibiting agent.
  • the suspending agent may be a sheared clay.
  • the sheared clay may be a sheared Attapulgite clay.
  • the coloring agent may be iron oxide.
  • the surfactant may be selected from the group of surfactants including sulfonates, sodium dodecyl sulfate, sodium lauryl sulfate, and foams.
  • the emulsifier may be selected from the group of emulsifiers including carboxyl acids, carboxylates, carboxymethyl cellulose, catechins, lignosulfonates, nanocrystals of lignin, and nanocrystals of cellulose.
  • the surfactant may be an emulsifier.
  • the thickening agent may be Xanthan gum with a weight average particle size diameter greater than 100 microns.
  • the corrosion inhibiting agent may be potassium ferricyanide or potassium ferrocyanide.
  • the fire-retardant composition further includes a corrosion inhibiting agent selected from the group of corrosion inhibiting agents including benzotri azole, 2-mercaptobenzothiazole, ammonium benzoate, and sodium dodecyl sulfate.
  • a diammonium phosphate based fire-retardant composition comprising a diammonium phosphate, a suspending agent, a coloring agent, a surfactant, a thickening agent, and a corrosion inhibiting agent.
  • the suspending agent may be a sheared clay.
  • the sheared clay may be a sheared Attapulgite clay.
  • the coloring agent may be iron oxide.
  • the surfactant may be selected from the group of surfactants including sulfonates, sodium dodecyl sulfate, sodium lauryl sulfate, and foams.
  • the emulsifier may be selected from the group of emulsifiers including carboxyl acids, carboxylates, carboxymethyl cellulose, catechins, lignosulfonates, nanocrystals of lignin, and nanocrystals of cellulose.
  • the surfactant may be an emulsifier.
  • the thickening agent may be Xanthan gum with a weight average particle size diameter greater than 100 microns.
  • the corrosion inhibiting agent may be potassium ferricyanide or potassium ferrocyanide.
  • the fire-retardant composition further includes a corrosion inhibiting agent selected from the group of corrosion inhibiting agents including benzotriazole, 2- mercaptobenzothiazole, ammonium benzoate, and sodium dodecyl sulfate.
  • fire-retardant compositions including an ammonium polyphosphate and a thickening agent.
  • the fire-retardant compositions may also include a coloring agent, a surfactant, a thickening agent, or any combination thereof.
  • the fire-retardant compositions may include between about 88.0 wt % and about 95.0 wt % ammonium polyphosphate as the active fire-retardant component.
  • the fire-retardant compositions may alternatively include between about 88.0 wt % and about 98.0 wt % diammonium phosphate (DAP) as an active fire-retardant component.
  • the fire- retardant composition may still alternatively include a combination of ammonium polyphosphate and diammonium phosphate (DAP) as an active fire-retardant component.
  • the fire-retardant composition may include between about 8.0 wt% and 15.0 by wt% ammonium polyphosphate and may include between about 85.0 wt% and 92.0 by wt% diammonium phosphate (DAP).
  • the fire-retardant composition may include about 10.0 wt% ammonium polyphosphate and may include about 90.0 wt% diammonium phosphate (DAP).
  • the fire-retardant compositions may include between about 1.0 wt % and about 2.0 wt % of a suspending agent. The suspending agent reduces separation and settling of the fire-retardant compositions during storage.
  • the suspending agent may be in the form of a sheared clay such as Attapulgite clay, for example, a hydrous magnesium aluminum silicate gels such as MINI-U-GEL® FG or MINI-U-GEL® 400 from Active Minerals International, LLC of 1130 Dade Street, Quincy, Florida 32351. Sheared clay may also function as a thickening agent to hold the fire-retardant composition together.
  • a sheared clay such as Attapulgite clay, for example, a hydrous magnesium aluminum silicate gels such as MINI-U-GEL® FG or MINI-U-GEL® 400 from Active Minerals International, LLC of 1130 Dade Street, Quincy, Florida 32351.
  • Sheared clay may also function as a thickening agent to hold the fire-retardant composition together.
  • the fire-retardant compositions may include between about 1.0 wt % and about 3.5 wt % of a coloring agent.
  • the coloring agent is used to increase the visibility of the fire-retardant compositions when the fire-retardant compositions are applied to wildland.
  • the coloring agent may be an iron oxide coloring agent in the form of Bayferrox® Red 101 from Lanxess Deutschland GmbH of D-51369 Leverkusen, Federal Republic of Germany.
  • the fire-retardant compositions may include between about 1.0 wt % and about 3.0 wt % of a thickening agent.
  • the thickening agent allows for more even distribution of the fire-retardant compositions when they are dropped from the air.
  • the thickening agent may be Xanthan gum with a weight average particle size diameter greater than 100 microns. Xanthan gum may add viscosity and elasticity to the fire- retardant composition.
  • the fire retardant compositions may include up to about 1.0 wt % of a surfactant. The surfactants support the even spread of corrosion inhibiting agents and other compounds within the fire-retardant composition to better dissipate the corrosion inhibiting agents.
  • the surfactant may be sulfonates, sodium dodecyl sulfate, sodium lauryl sulfate, and foams.
  • the foams are Class A foams which will consist of a surfactant or detergent, and organic solvents (e.g., trimethyl-trimethylene glycol and hexylene glycol), foam stabilizers (e.g., lauryl alcohol), and corrosion inhibitors.
  • the fire retardant compositions may include up to about 1.0 wt % of an emulsifier.
  • the emulsifiers stabilize emulsions or mixes and to allow the inhibitors a substrate to better be available to prevent corrosion by attaching to metals.
  • the emulsifier may be carboxyl acids, carboxylates, carboxymethyl cellulose, catechins, lignosulfonates, nanocrystals of lignin, or nanocrystals of cellulose.
  • the fire-retardant composition further includes corrosion inhibiting agents selected from the group of corrosion inhibiting agents including potassium ferricyanide, potassium ferrocyanide, benzotri azole, 2-mercaptobenzothiazole, ammonium benzoate.
  • the corrosion inhibiting agents reduce the corrosiveness of the fire-retardant composition.
  • the fire-retardant composition may include between about 0.0 wt % and about 3.5 wt % potassium ferrocyanide.
  • the fire-retardant composition may include between about 0.0 wt % and about 3.5 wt % potassium ferrocyanide.
  • the fire-retardant composition may include between about 0.0 wt % and about 2.5 wt % benzotri azole.
  • the fire-retardant composition may include between about 0.0 wt % and about 1.0 wt % 2- mercaptobenzothiazole as a corrosion inhibitor or 2-mercaptobenzothiazole added with other corrosion inhibitors to add synergy.
  • the fire-retardant composition may include between about 0.0 wt % and about 1.5 wt % ammonium benzoate.
  • the corrosion inhibitors provide the required protection required for aluminum, steel and bronze.
  • the inhibitors may reduce the corrosion of magnesium.
  • the sodium dodecyl sulfate and catechins may also function as corrosion inhibiting agents.
  • the fire-retardant compositions are formulated to pass the USDA Forest Service Specification 5l00-304c as a Wet Concentrate and as a mixed (diluted) fire- retardant composition, with appropriate Health and Safety Performance, Combustion- Retarding Effectiveness, Physical Properties, and Materials Effects. It will be understood by a person skilled in the art that the components and wt % thereof will differ between different formulations. For example, formulations with higher wt % ferricyanide or ferrocyanide (e.g. above 2.66 wt %) may not require a surfactant or emulsifier.

Abstract

An ammonium polyphosphate based fire-retardant composition comprises an ammonium polyphosphate or a diammonium phosphate, a suspending agent, a coloring agent, a surfactant, a thickening agent, and a corrosion inhibiting agent. The fire-retardant composition may include about 10.0 wt% ammonium polyphosphate and may include about 90.0 wt% diammonium phosphate (DAP).The surfactant may be selected from the group of surfactants including sulfonates, sodium dodecyl sulfate, sodium lauryl sulfate, and foams. The emulsifier may be selected from the group of emulsifiers including carboxyl acids, carboxylates, carboxymethyl cellulose, catechins, lignosulfonates, nanocrystals of lignin, and nanocrystals of cellulose. The surfactant may be an emulsifier. The thickening agent may be Xanthan gum with a weight average particle size diameter greater than 100 microns. The corrosion inhibiting agent may be potassium ferricyanide or potassium ferrocyanide. The fire-retardant composition further includes a corrosion inhibiting agent selected from the group of corrosion inhibiting agents including benzotriazole, 2-mercaptobenzothiazole, ammonium benzoate, and sodium dodecyl sulfate.

Description

AMMONIUM POLYPHOSPHATE BASED AND DIAMMONIUM PHOSPHATE BASED FIRE-RETARDANT COMPOSITIONS
BACKGROUND OF THE INVENTION
Field of the Invention
[0001] The present invention relates to fire-retardant compositions and, in particular, to ammonium polyphosphate based fire-retardant compositions and diammonium phosphate based fire-retardant compositions comprising potassium ferricyanide and/or potassium ferrocyanide.
Description of the Related Art
[0002] It is known to use ammonium polyphosphate based fire-retardant compositions and diammonium phosphate based fire-retardant compositions to combat wildland fires. However, ammonium polyphosphate and diammonium phosphate are corrosive and may damage equipment used to produce, store, handle, and apply the fire- retardant composition. There is accordingly a need for corrosion inhibiting agents which reduce the corrosivity of ammonium polyphosphate based fire-retardant compositions and diammonium phosphate based fire-retardant compositions. Ammonium polyphosphate based fire-retardant compositions and diammonium phosphate based fire- retardant compositions may also include a coloring agent, a suspending agent, a surfactant, a thickening agent, or any combination thereof.
[0003] United States Patent No. 3,960,735 which issued on July 1, 1976, to Lacey discloses a composition consisting essentially of an ammonium polyphosphate liquid and an iron cyanide blue. The iron cyanide blue being is in a minor amount effective to substantially reduce the corrosiveness of said composition to aluminum to less than or equal to 1 mil per year as determined by the "Uniform Corrosion" test set forth in Section
Figure imgf000003_0001
Retardant, Forest Fire, Liquid Chemical, Unthickened for Aircraft or Ground Application," issued by the United States Department of Agriculture, Forest Service.
[0004] United States Patent No. 4,176,071 which issued on November 27, 1979, to Couch discloses a corrosion inhibitor mixture for ammonium sulfate fire-retardant compositions. The fire-retardant compositions generally comprise ammonium sulfate, a thickening agent, and water. The corrosion inhibitor mixture comprises a water-soluble cyanide compound and a water-soluble ortho-phosphate compound. The components of the corrosion inhibitor mixture are present in the fire-retardant compositions in a minor effective amount at least sufficient to inhibit the corrosivity of the fire retardant composition to aluminum, mild steel, and brass to less than 1 mil per year.
SUMMARY OF THE INVENTION
[0005] There is provided an ammonium polyphosphate based fire-retardant composition comprising an ammonium polyphosphate, a suspending agent, a coloring agent, a surfactant, an emulsifier, a thickening agent, and a corrosion inhibiting agent. The suspending agent may be a sheared clay. The sheared clay may be a sheared Attapulgite clay. The coloring agent may be iron oxide. The surfactant may be selected from the group of surfactants including sulfonates, sodium dodecyl sulfate, sodium lauryl sulfate, and foams. The emulsifier may be selected from the group of emulsifiers including carboxyl acids, carboxylates, carboxymethyl cellulose, catechins, lignosulfonates, nanocrystals of lignin, and nanocrystals of cellulose. The surfactant may be an emulsifier. The thickening agent may be Xanthan gum with a weight average particle size diameter greater than 100 microns. The corrosion inhibiting agent may be potassium ferricyanide or potassium ferrocyanide. The fire-retardant composition further includes a corrosion inhibiting agent selected from the group of corrosion inhibiting agents including benzotri azole, 2-mercaptobenzothiazole, ammonium benzoate, and sodium dodecyl sulfate. [0006] There is also provided a diammonium phosphate based fire-retardant composition comprising a diammonium phosphate, a suspending agent, a coloring agent, a surfactant, a thickening agent, and a corrosion inhibiting agent. The suspending agent may be a sheared clay. The sheared clay may be a sheared Attapulgite clay. The coloring agent may be iron oxide. The surfactant may be selected from the group of surfactants including sulfonates, sodium dodecyl sulfate, sodium lauryl sulfate, and foams. The emulsifier may be selected from the group of emulsifiers including carboxyl acids, carboxylates, carboxymethyl cellulose, catechins, lignosulfonates, nanocrystals of lignin, and nanocrystals of cellulose. The surfactant may be an emulsifier. The thickening agent may be Xanthan gum with a weight average particle size diameter greater than 100 microns. The corrosion inhibiting agent may be potassium ferricyanide or potassium ferrocyanide. The fire-retardant composition further includes a corrosion inhibiting agent selected from the group of corrosion inhibiting agents including benzotriazole, 2- mercaptobenzothiazole, ammonium benzoate, and sodium dodecyl sulfate.
DESCRIPTIONS OF THE PREFERRED EMBODIMENTS
[0007] Disclosed are fire-retardant compositions including an ammonium polyphosphate and a thickening agent. The fire-retardant compositions may also include a coloring agent, a surfactant, a thickening agent, or any combination thereof.
[0008] The fire-retardant compositions may include between about 88.0 wt % and about 95.0 wt % ammonium polyphosphate as the active fire-retardant component. The fire-retardant compositions may alternatively include between about 88.0 wt % and about 98.0 wt % diammonium phosphate (DAP) as an active fire-retardant component. The fire- retardant composition may still alternatively include a combination of ammonium polyphosphate and diammonium phosphate (DAP) as an active fire-retardant component. The fire-retardant composition may include between about 8.0 wt% and 15.0 by wt% ammonium polyphosphate and may include between about 85.0 wt% and 92.0 by wt% diammonium phosphate (DAP). The fire-retardant composition may include about 10.0 wt% ammonium polyphosphate and may include about 90.0 wt% diammonium phosphate (DAP). [0009] The fire-retardant compositions may include between about 1.0 wt % and about 2.0 wt % of a suspending agent. The suspending agent reduces separation and settling of the fire-retardant compositions during storage. The suspending agent may be in the form of a sheared clay such as Attapulgite clay, for example, a hydrous magnesium aluminum silicate gels such as MINI-U-GEL® FG or MINI-U-GEL® 400 from Active Minerals International, LLC of 1130 Dade Street, Quincy, Florida 32351. Sheared clay may also function as a thickening agent to hold the fire-retardant composition together.
[0010] The fire-retardant compositions may include between about 1.0 wt % and about 3.5 wt % of a coloring agent. The coloring agent is used to increase the visibility of the fire-retardant compositions when the fire-retardant compositions are applied to wildland. The coloring agent may be an iron oxide coloring agent in the form of Bayferrox® Red 101 from Lanxess Deutschland GmbH of D-51369 Leverkusen, Federal Republic of Germany.
[0011] The fire-retardant compositions may include between about 1.0 wt % and about 3.0 wt % of a thickening agent. The thickening agent allows for more even distribution of the fire-retardant compositions when they are dropped from the air. The thickening agent may be Xanthan gum with a weight average particle size diameter greater than 100 microns. Xanthan gum may add viscosity and elasticity to the fire- retardant composition. [0012] The fire retardant compositions may include up to about 1.0 wt % of a surfactant. The surfactants support the even spread of corrosion inhibiting agents and other compounds within the fire-retardant composition to better dissipate the corrosion inhibiting agents. The surfactant may be sulfonates, sodium dodecyl sulfate, sodium lauryl sulfate, and foams. The foams are Class A foams which will consist of a surfactant or detergent, and organic solvents (e.g., trimethyl-trimethylene glycol and hexylene glycol), foam stabilizers (e.g., lauryl alcohol), and corrosion inhibitors. [0013] The fire retardant compositions may include up to about 1.0 wt % of an emulsifier. The emulsifiers stabilize emulsions or mixes and to allow the inhibitors a substrate to better be available to prevent corrosion by attaching to metals. The emulsifier may be carboxyl acids, carboxylates, carboxymethyl cellulose, catechins, lignosulfonates, nanocrystals of lignin, or nanocrystals of cellulose.
[0014] The fire-retardant composition further includes corrosion inhibiting agents selected from the group of corrosion inhibiting agents including potassium ferricyanide, potassium ferrocyanide, benzotri azole, 2-mercaptobenzothiazole, ammonium benzoate. The corrosion inhibiting agents reduce the corrosiveness of the fire-retardant composition. The fire-retardant composition may include between about 0.0 wt % and about 3.5 wt % potassium ferrocyanide. The fire-retardant composition may include between about 0.0 wt % and about 3.5 wt % potassium ferrocyanide. The fire-retardant composition may include between about 0.0 wt % and about 2.5 wt % benzotri azole. The fire-retardant composition may include between about 0.0 wt % and about 1.0 wt % 2- mercaptobenzothiazole as a corrosion inhibitor or 2-mercaptobenzothiazole added with other corrosion inhibitors to add synergy. The fire-retardant composition may include between about 0.0 wt % and about 1.5 wt % ammonium benzoate. The corrosion inhibitors provide the required protection required for aluminum, steel and bronze. The inhibitors may reduce the corrosion of magnesium. The sodium dodecyl sulfate and catechins may also function as corrosion inhibiting agents.
[0015] Below are examples of formulations of the fire-retardant compositions disclosed herein. The fire-retardant compositions are formulated to pass the USDA Forest Service Specification 5l00-304c as a Wet Concentrate and as a mixed (diluted) fire- retardant composition, with appropriate Health and Safety Performance, Combustion- Retarding Effectiveness, Physical Properties, and Materials Effects. It will be understood by a person skilled in the art that the components and wt % thereof will differ between different formulations. For example, formulations with higher wt % ferricyanide or ferrocyanide (e.g. above 2.66 wt %) may not require a surfactant or emulsifier. FORMULATION 1
Figure imgf000007_0001
FORMULATION 2
Figure imgf000007_0002
FORMULATION 3
Figure imgf000007_0003
FORMULATION 4
Figure imgf000008_0001
FORMULATION 5
Figure imgf000008_0002
[0016] It will be understood by a person skilled in the art that many of the details provided above are by way of example only, and are not intended to limit the scope of the invention which is to be determined with reference to the following claims.

Claims

What is claimed is:
1. An ammonium polyphosphate based fire-retardant composition comprising: an ammonium polyphosphate; a suspending agent, the suspending agent being a sheared clay; a coloring agent, the coloring agent being iron oxide; a surfactant, the surfactant being selected from the group of surfactants including sulfonates, sodium dodecyl sulfate, sodium lauryl sulfate, and foams; an emulsifier selected from the group of emulsifiers including carboxyl acids, carboxylates, carboxymethyl cellulose, catechins, lignosulfonates, nanocrystals of lignin, or nanocrystals of cellulose; a thickening agent, the thickening agent being Xanthan gum with a weight average particle size diameter greater than 100 microns; and a corrosion inhibiting agent, the corrosion inhibiting agent being potassium ferricyanide or potassium ferrocyanide.
2. The fire-retardant composition as claimed in claim 1 wherein the fire-retardant composition includes between about 88.0 wt % and about 95.0 wt % ammonium polyphosphate.
3. The fire-retardant composition as claimed in claim 1 wherein the fire-retardant composition includes between about 1.0 wt % and about 2.0 wt % sheared clay and the sheared clay is sheared Attapulgite clay.
4. The fire-retardant composition as claimed in claim 1 wherein the fire-retardant composition includes between about 1.0 wt % and about 3.5 wt % iron oxide.
5. The fire-retardant composition as claimed in claim 1 wherein the fire-retardant composition includes between about 0.5 wt % and about 3.0 wt % Xanthan gum.
6. The fire-retardant composition as claimed in claim 1 wherein the fire-retardant composition includes up to about 1.0 wt % surfactant.
7. The fire-retardant composition as claimed in claim 1 wherein the fire-retardant composition includes up to about 1.0 wt % emulsifier.
8. The fire-retardant composition as claimed in claim 1 wherein the fire-retardant composition includes up to about 3.5 wt % potassium ferricyanide.
9. The fire-retardant composition as claimed in claim 1 wherein the fire-retardant composition includes up to about 3.5 wt % potassium ferrocyanide.
10. The fire-retardant composition as claimed in claim 1 wherein the fire-retardant composition further includes a corrosion inhibiting agent selected from the group of corrosion inhibiting agents including benzotriazole, 2-mercaptobenzothiazole, ammonium benzoate, and sodium dodecyl sulfate.
11. The fire-retardant composition as claimed in claim 10 wherein the fire-retardant composition includes up to about 2.5 wt % benzotriazole.
12. The fire-retardant composition as claimed in claim 10 wherein the fire-retardant composition includes up to about 1.0 wt % 2-mercaptobenzothiazole.
13. The fire-retardant composition as claimed in claim 10 wherein the fire-retardant composition includes up to about 1.5 wt % ammonium benzoate or sodium dodecyl sulfate.
14. A diammonium phosphate based fire-retardant composition comprising: a diammonium phosphate; a suspending agent, the suspending agent being a sheared clay; a coloring agent, the coloring agent being iron oxide; a surfactant, the surfactant being selected from the group of surfactants including sulfonates, sodium dodecyl sulfate, sodium lauryl sulfate, and foams; an emulsifier selected from the group of emulsifiers comprising carboxyl acids, carboxylates, carboxymethyl cellulose, catechins, lignosulfonates, nanocrystals of lignin, or nanocrystals of cellulose; a thickening agent, the thickening agent being Xanthan gum with a weight average particle size diameter greater than 100 microns; and a corrosion inhibiting agent, the corrosion inhibiting agent being potassium ferricyanide or potassium ferrocyanide.
15. The fire-retardant composition as claimed in claim 14 wherein the fire-retardant composition includes between about 88.0 wt % and about 98.0 wt % diammonium phosphate.
16. The fire-retardant composition as claimed in claim 14 wherein the fire-retardant composition includes between about 1.0 wt % and about 3.0 wt % sheared clay and the sheared clay is sheared Attapulgite clay.
17. The fire-retardant composition as claimed in claim 14 wherein the fire-retardant composition includes between about 1.0 wt % and about 3.5 wt % iron oxide.
18. The fire-retardant composition as claimed in claim 14 wherein the fire-retardant composition includes between about 0.5 wt % and about 3.0 wt % Xanthan gum.
19. The fire-retardant composition as claimed in claim 14 wherein the fire-retardant composition includes up to about 1.0 wt % surfactants.
20. The fire-retardant composition as claimed in claim 14 wherein the fire-retardant composition includes up to about 1.0 wt % emulsifiers.
21. The fire-retardant composition as claimed in claim 14 wherein the fire-retardant composition includes up to about 3.5 wt % potassium ferricyanide.
22. The fire-retardant composition as claimed in claim 14 wherein the fire-retardant composition includes up to about 3.5 wt % potassium ferrocyanide.
23. The fire-retardant composition as claimed in claim 14 wherein the fire-retardant composition further includes a corrosion inhibiting agent selected from the group of corrosion inhibiting agents including benzotriazole, 2-mercaptobenzothiazole, ammonium benzoate, and sodium dodecyl sulfate.
24. The fire-retardant composition as claimed in claim 23 wherein the fire-retardant composition includes up to about up to about 2.5 wt % benzotriazole.
25. The fire-retardant composition as claimed in claim 23 wherein the fire-retardant composition includes up to about 1.0 wt % 2-mercaptobenzothiazole.
26. The fire-retardant composition as claimed in claim 23 wherein the fire-retardant composition includes up to about 1.5 wt % ammonium benzoate or sodium dodecyl sulfate.
27. An ammonium polyphosphate based fire-retardant composition comprising: an ammonium polyphosphate; a suspending agent, the suspending agent being a sheared clay; a coloring agent, the coloring agent being iron oxide; a surfactant, the surfactant being selected from the group of surfactants including sulfonates, sodium dodecyl sulfate, sodium lauryl sulfate, and foams; an emulsifier selected from the group of emulsifiers including carboxyl acids, carboxylates, carboxymethyl cellulose, catechins, lignosulfonates, nanocrystals of lignin, or nanocrystals of cellulose; a thickening agent, the thickening agent being Xanthan gum with a weight average particle size diameter greater than 100 microns; and a corrosion inhibiting agent, corrosion inhibiting agent being selected from the group of corrosion inhibiting agents including 2-mercaptobenzothiazole, ammonium benzoate, and benzotriazle.
PCT/CA2019/050936 2018-07-05 2019-07-05 Ammonium polyphosphate based and diammonium phosphate based fire-retardant compositions WO2020006648A1 (en)

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CN112143031A (en) * 2020-08-25 2020-12-29 蚌埠壹石通聚合物复合材料有限公司 Preparation method of attapulgite doped ammonium polyphosphate
CN113663710A (en) * 2021-08-27 2021-11-19 扬州工业职业技术学院 Magnetic solid acid catalyst and application thereof in catalyzing fructose hydrolysis reaction

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