Corrosion-inhibited ammonium polyphosphate fire retardant compositions

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Quick Facts

Patent No.: US 8,202,449
App. No.: 11/589,749
Granted: Jun 19, 2012
Kind: B2

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Abstract

A fire-retardant composition comprising an ammonium polyphosphate, a suspending agent and an effective amount of a corrosion inhibiting agent. When in solution the corrosion inhibiting agent includes at least one ion selected from the group of ions consisting of aluminum ions, ferric ions, calcium ions and magnesium ions. Said ions complex an effective amount of fluoride ions present in the fire-retardant composition to reduce the corrosiveness of the fire-retardant composition.

Claims (22)

1. A fire-retardant composition comprising:

an ammonium polyphosphate;

a suspending agent; and

an effective amount of a corrosion inhibiting agent including at least one ion selected from the group of ions consisting of aluminum ions, ferric ions, calcium ions and magnesium ions, when the corrosion inhibiting agent is in solution, and wherein said ions complex an effective amount of fluoride ions present in the fire-retardant composition to reduce the corrosiveness of the fire-retardant composition.

2. The fire-retardant composition as claimed in claim 1 , wherein the corrosion inhibiting agent includes aluminum ions added as aluminum sulphate.

3. The fire-retardant composition as claimed in claim 1 , wherein the fire-retardant composition comprises between 0.1% to 1.0% by weight aluminum ions.

4. The fire-retardant composition as claimed in claim 1 , wherein the fire-retardant composition comprises 0.5% by weight aluminum ions.

5. The fire-retardant composition as claimed in claim 1 , further including a thickening agent.

6. The fire-retardant composition as claimed in claim 1 , further including a coloring agent.

7. The fire-retardant composition as claimed in claim 1 , further including an amine.

8. The fire-retardant composition as claimed in claim 1 , further including an azole.

9. A fire-retardant composition comprising:

an ammonium polyphosphate;

a suspending agent; and

a corrosion inhibiting agent including an effective amount of aluminum ions when in solution, the aluminum ions being added as aluminum sulphate, and wherein the aluminum ions complex an effective amount of fluoride ions present in the fire-retardant composition to reduce the corrosiveness of the fire-retardant composition.

10. The fire-retardant composition as claimed in claim 9 , wherein the fire-retardant composition comprises between 0.1% to 1.0% by weight aluminum ions.

11. The fire-retardant composition as claimed in claim 9 , wherein the fire-retardant composition comprises 0.5% by weight aluminum ions.

12. The fire-retardant composition as claimed in claim 9 , wherein the corrosion inhibiting agent further includes at least one ion selected from the group consisting of magnesium ions and calcium ions, when in solution.

13. The fire-retardant composition as claimed in claim 9 , further including a thickening agent.

14. The fire-retardant composition as claimed in claim 9 , further including a coloring agent.

15. The fire-retardant composition as claimed in claim 9 , further including an amine.

16. The fire-retardant composition as claimed in claim 9 , further including an azole.

Assignments (11)

NOTES PATENT SECURITY AGREEMENT Recorded Jan 2, 2026

From: PERIMETER SOLUTIONS LP

To: U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT

Reel/Frame 074174/0258 →

RELEASE OF SECURITY INTEREST IN PATENTS (SECOND LIEN) Recorded Nov 10, 2021

From: GOLDMAN SACHS BANK USA, AS ADMINISTRATIVE AGENT

To: PERIMETER SOLUTIONS LP (F/K/A ICL PERFORMANCE PRODUCTS LP)