# US 4,397,700 A · Piperazine derivatives of ferrocene

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- Number: US 4,397,700 A
- Document ID: US4397700A
- Status: Granted
- Kind: A
- Application number: 06/351,711
- Filed: 1982-02-24
- Granted: 1983-08-09
- Earliest claimed: 1982-02-24
- Assignees: The United States of America as represented by the Secretary of the Navy
- Inventors: Nancy C. Johnson; Carl Gotzmer; Mark Graff
- Web page: https://patentgrep.com/patent/US4397700A

## CPC

- C06B 23/007: {Ballistic modifiers, burning rate catalysts, burning rate depressing agents, e.g. for gas generating}
- C06B 45/32: the coating containing an organic compound
- C07F 17/02: of metals of Groups 8, 9 or 10 of the Periodic Table
- 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})
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)

## Abstract

Diferrocenyl piperazines represented by the formula: ##STR1## wherein Fc represents a ferrocene radial R represents alkylene radical hng from 1 to 7 carbon atoms, and x and y are 0 or 1 are disclosed as burning rate modifiers for ammonium perchlorate composite propellants. Coating ammonium perchlorate crystals with the differocenyl piperazines significantly decreases migration of the piperazines in the propellant.

## Claims

### Claim 1

A diferrocenyl piperazine represented by the formula: ##STR3## where Fc represents a ferrocene radical, R represents an alkylene radical, and x and y are 0 or 1.

### Claim 2 (depends on 1)

The diferrocenyl piperazine of claim 1 wherein R is a straight or branched alkylene radical having from 1 to 7 carbon atoms.

### Claim 3 (depends on 2)

The diferrocenyl piperazine of claim 2 wherein R is a straight or branched alkylene radical having from 1 to 4 carbon atoms.

### Claim 4 (depends on 1)

The diferrocenyl piperazine of claim 1 wherein x and y are 0.

### Claim 5 (depends on 2)

The diferrocenyl piperazine of claim 2 wherein x is 1 and y is 0.

### Claim 6 (depends on 5)

The diferrocenyl piperazine of claim 5 wherein R represents a alkylene radical having from 1 to 4 carbon atoms.

### Claim 7

Ammonium perchlorate coated with a diferrocenyl piperazine represented by the formula: ##STR4## where Fc represents a ferrocene radical, R represents an alkylene radical having from 1 to 7 carbon atoms, and x and y are 0 or 1 wherein said piperazine is complexed with ammonium perchlorate.

### Claim 8 (depends on 7)

The diferrocenyl piperazine coated ammonium perchlorate of claim 7 wherein x and y are 0.

### Claim 9 (depends on 7)

The diferrocenyl piperazine coated ammonium perchlorate of claim 7 wherein x is 0 and y is 1.