# US 2018/0021612 A1 · Stabilized suspension for production of fire-suppressing hydrogels

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2018/0021612 A1
- Document ID: US20180021612A1
- Status: Published application
- Kind: A1
- Application number: 15/656,322
- Filed: 2017-07-21
- Published: 2018-01-25
- Earliest claimed: 2016-07-22
- Assignees: Firerein Inc.
- Applicants: FireRein Inc.
- Inventors: Robert W. McLean; Rui Resendes; Stephanie R. White
- Web page: https://patentgrep.com/patent/US20180021612A1

## CPC

- A62D 1/0064: {Gels; Film-forming compositions}
- A62D: CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS

## Abstract

The present application provides a stabilized suspension for production of fire-suppressing hydrogels. Specifically, the present application provides a composition comprising: (i) at least one thickening agent; (ii) at least one liquid medium; and, (iii) at least one particulate suspending agent, wherein the composition consists of >75%, by weight, consumer-grade components and wherein the composition is a concentrate that forms a fire-suppressing hydrogel when mixed with water or an aqueous solution. Also provided is a hydrogel prepared from this composition methods of using the hydrogel to extinguish, suppress and/or prevent fires, including both class A and class B fires.

## Claims

### Claim 1

A composition comprising:
a. at least one thickening agent;
b. at least one liquid medium; and,
c. at least one particulate suspending agent, wherein the composition consists of >75%, by weight, consumer-grade components and wherein the composition is a concentrate that forms a fire-suppressing hydrogel when mixed with water or an aqueous solution.

### Claim 2 (depends on 1)

The composition of claim 1, wherein the composition comprises:
a. 10-75 wt % of at least one thickening agent;
b. 0.1-10 wt % of at least one particulate suspending agent; and
c. 15-90 wt % of at least one liquid medium.

### Claim 3 (depends on 2)

The composition of claim 2, wherein the at least one particulate suspending agent is silica or glycogen.

### Claim 4 (depends on 3)

The composition of claim 3, wherein the composition comprises one or more additional suspending agent.

### Claim 5 (depends on 4)

The composition of claim 4, wherein the composition additionally comprises water at a concentration of less than 5 wt %.

### Claim 6 (depends on 1)

The composition of claim 1, which comprises guar gum and xanthan gum as thickening agents.

### Claim 7 (depends on 1)

The composition of claim 1, which comprises corn starch, guar gum and xanthan gum as thickening agents.

### Claim 8 (depends on 1)

The composition of claim 1, wherein the at least one liquid medium is an edible oil.

### Claim 9 (depends on 8)

The composition of claim 8, wherein the edible oil is a vegetable oil.

### Claim 10 (depends on 9)

The composition of claim 9, wherein the vegetable oil is canola oil.

### Claim 11 (depends on 1)

A hydrogel comprising water and about 0.1% to about 30% by weight of the composition of claim 1.

### Claim 12 (depends on 11)

The hydrogel of claim 11, wherein the composition's weight percentage is 0.1-1 wt %, 1-5 wt %, 5-10 wt %, 15-30 wt %.

### Claim 13 (depends on 12)

The hydrogel of claim 12, wherein the composition's weight percentage is 1-5 wt %.

### Claim 14 (depends on 11)

The hydrogel of claim 11, wherein the hydrogel's viscosity is 0.1-1 CP, 1-5 cP, 5-10 cP, 10-15 CP, 15-30 cP, 30-60 cP, 60-90 cP, 90-120 cP, 120-150 cP, or >150 cP when measured with a Viscolite 700 viscometer.

### Claim 15 (depends on 11)

The hydrogel of claim 11, wherein the hydrogel adheres to surfaces to which it is applied.

### Claim 16 (depends on 11)

The hydrogel of claim 11, wherein the composition comprises:
a. 10-75 wt % of at least one thickening agent;
b. 0.1-10 wt % of at least one particulate suspending agent; and
c. 15-90 wt % of at least one liquid medium.

### Claim 17 (depends on 11)

The hydrogel of claim 11, wherein the at least one particulate suspending agent is silica or glycogen.

### Claim 18 (depends on 17)

The hydrogel of claim 17, wherein the composition comprises one or more additional suspending agent.

### Claim 19 (depends on 11)

The hydrogel of claim 11, which comprises guar gum and xanthan gum as thickening agents or corn starch, guar gum and xanthan gum as thickening agents.

### Claim 20 (depends on 11)

The hydrogel of claim 11, wherein the at least one liquid medium is an edible oil.