Atlantic Research Corporation

Altantic Research Corporation

Jamie B Neidert

James D Martin

Robert S Scheffee

Robert D Lynch

Edna M Williams

Brian K Wheatley

Robert E Black, Iii

Gary T Bowman

Fire suppressant compositions which are substantially free of ammonium nitrate and which comprise potassium nitrate in an amount sufficient to generate at least about 10 wt. % potassium carbonate when combusted. Most preferably, a guanidine salt, such as guanidine nitrate, is used in combination with the potassium nitrate. The compositions employed in the present invention have low pressure exponents, high burning rates and low flame temperatures.

Fire suppressant compositions

A family of Class 1.3 propellant compositions comprising nitrocellulose, at least one of a selected group of plasticizing nitrate esters, a thermal stabilizer, carbon and an energetic solid, and a method of making the family of propellant compositions is provided.

Double base propellant containing 5-aminotetrazole

A fire suppressant composition is provided which exhibits a low pressure and low flame temperature. The composition comprises ammonium nitrate and a guanidine salt or derivative which produces greater than 3 moles of inert gas per 100 grams of composition and alkali metal or alkaline earth salts for flame suppression. The composition may also include iron or iron oxide.

Fire suppressant

Castable propellant formulations are provided including reduced toxicity ballistic modifiers that do not adversely increase the sensitivity of the propellant to shock detonation. Failure to adequately control the propellant burn rate often results in unacceptable performance of the propellant. Carbon can act as an effective ballistic, but not to the extent of metal compounds. It has been found that pasting a ballistic modifier, including ballistic modifiers containing lead, in an inert polymer modifies the burn rate of propellants while allowing the use of a reduced amount of modifier to achieve the same desired burn rate modification as the prior art, and therefore creating reduced shortcomings associated with the ballistic modifiers. Accordingly, the use of from about 1% to about 6% burn rate modifier wherein the burn rate modifier includes a ballistic modifier pasted in an inert polymer is taught as an effective burn rate modifier in a propellant, in order to provide reduced toxicity means for modifying the propellant burn rate without increasing the sensitivity of the propellant to shock detonation.

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Jeffersonton, VA, United States of America

Jamie B Neidert