ETHYL CELLULOSE FILMS, PREPARATION OF SAME AND DOUBLE-BASE PROPELLANT BLOCKS COMBUSTION-INHIBITED WITH SUCH FILMS

The present invention mainly concerns: ethyl cellulose films, the composition of which, expressed as percentages by weight, contains: - 75% to 95% ethyl cellulose, - 4% to 20% of at least one plasticiser, - 0.5% to 5% of at least one compound chosen from: + 2-nitrodiphenylamine, + 1,3-diethyl-1,3-di...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CUVELIER, Sébastien, BRU, Eric, BOUTIER, Pascal
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS EXPLOSIVES EXPLOSIVES OR THERMIC COMPOSITIONS MANUFACTURE THEREOF MATCHES METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF SINGLE SUBSTANCES AS EXPLOSIVES
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Beschreibung
Zusammenfassung:	The present invention mainly concerns: ethyl cellulose films, the composition of which, expressed as percentages by weight, contains: - 75% to 95% ethyl cellulose, - 4% to 20% of at least one plasticiser, - 0.5% to 5% of at least one compound chosen from: + 2-nitrodiphenylamine, + 1,3-diethyl-1,3-diphenyl urea, + 1,3-dimethyl-1,3-diphenyl urea, and + 1-methyl-3-ethyl-1,3-diphenyl urea, and - optionally, up to 5% of at least one additive; a method for preparing such films; and double-base propellant blocks, part of the surface of which is combustion-inhibited by such films. La présente invention a pour principaux objets : des films d'éthylcellulose dont la composition, exprimée en pourcentages massiques, renferme : - de 75 % à 95 % d'éthylcellulose, - de 4 % à 20 % d'au moins un plastifiant, - de 0,5 % à 5 % d'au moins un composé choisi parmi : + la 2-nitrodiphénylamine, + la l,3-diéthyl-l,3-diphényl urée, + la l,3-diméthyl-l,3-diphényl urée, et + la 1 -méthy l-3-éthy I- 1,3-di phényl urée, et - éventuellement, jusqu'à 5 % d'au moins un additif; un procédé de préparation de tels films; et les blocs de propergol double-base dont une partie de la surface est inhibée en combustion par de tels films.