# US 9,598,324 B1 · Solid electrically controlled propellants

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- Number: US 9,598,324 B1
- Document ID: US9598324B1
- Status: Granted
- Kind: B1
- Application number: 15/201,339
- Filed: 2016-07-01
- Granted: 2017-03-21
- Earliest claimed: 2012-08-27
- Assignees: Digital Solid State Propulsion, LLC
- Applicants: Digital Solid State Propulsion, LLC
- Inventors: Michael D. McPherson
- Web page: https://patentgrep.com/patent/US9598324B1

## CPC

- C06B 45/10: the organic component containing a resin
- C06B 23/00: Compositions characterised by non-explosive or non-thermic constituents {(in combination with specific explosives C06B25/20, C06B25/26, C06B29/04, C06B29/08, C06B31/06, C06B31/40, C06B33/02)}
- C06B 23/006: {Stabilisers (e.g. thermal stabilisers) (processes C06B21/0091; foam stabilisers C06B23/002)}
- C06B 23/007: {Ballistic modifiers, burning rate catalysts, burning rate depressing agents, e.g. for gas generating}
- C06B 23/009: {Wetting agents, hydrophobing agents, dehydrating agents, antistatic additives, viscosity improvers, antiagglomerating agents, grinding agents and other additives for working up}
- C06B 25/34: the compound being a nitrated acyclic, alicyclic or heterocyclic amine
- C06B: EXPLOSIVES OR THERMIC COMPOSITIONS (blasting F42D); MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES (compounds in general C01, C07 or C08; {demolition agents based on cementitious or like materials C04B41/0009})

## Abstract

The present application discloses a variety of improvements that enhance at least one of the mechanical, chemical/energetic, ballistic, or adhesive properties, of a class of ECPs, regardless of whether said ECPs are in solid phase or gels, singly or in combinations thereof.

## Claims

### Claim 1

An improved electrically controlled propellant wherein:
a. The electrically controlled propellant comprises boric acid; and
b. tetrazole without functional group substitutions.

### Claim 2 (depends on 1)

The improved electrically controlled propellant of claim 1 wherein:
a. said boric acid is alters the interim viscosity of the electrically controlled propellant.

### Claim 3 (depends on 2)

The improved electrically controlled propellant of claim 2 wherein:
a. said electrically controlled propellant comprises approximately 0.01 to 5% by weight boric acid.

### Claim 4 (depends on 1)

The improved electrically controlled propellant of claim 1 wherein:
a. said electrically controlled propellant comprises approximately 0.01 to 5% by weight boric acid.

### Claim 5 (depends on 1)

The improved electrically controlled propellant of claim 1 wherein:
a. said electrically controlled propellant comprises more than 0.001% by weight boric acid.

### Claim 6 (depends on 1)

The improved electrically controlled propellant of claim 1 wherein:
a. said boric acid improves cross-linking and increases the mechanical strength of the electrically controlled propellant.

### Claim 7

An improved electrically controlled propellant wherein:
a. the electrically controlled propellant comprises boric acid; and
b. at least one nitrogen heterocycle in the class of azoles: imidazole, pyrazole, 1,2,3-triazole, without various functional group substitutions on the class structures.