Patent classifications
C06B25/26
LONG UNSATURATED ALIPHATIC CHAINS AS STABILISERS FOR NITRATE ESTERS AND NITROCELLULOSE-BASED APPLICATIONS
A nitrocellulose-based composition for use as a propellant or as a combustible item is provided. The nitrocellulose-based composition includes a nitrate ester-based component including nitrocellulose; and a stabiliser (I) in the form of a long aliphatic chain having at least two unsaturation sites, the compound having a molecular weight of at least (120) and an iodine number of at least (25).
LONG UNSATURATED ALIPHATIC CHAINS AS STABILISERS FOR NITRATE ESTERS AND NITROCELLULOSE-BASED APPLICATIONS
A nitrocellulose-based composition for use as a propellant or as a combustible item is provided. The nitrocellulose-based composition includes a nitrate ester-based component including nitrocellulose; and a stabiliser (I) in the form of a long aliphatic chain having at least two unsaturation sites, the compound having a molecular weight of at least (120) and an iodine number of at least (25).
Ionone stabilisers for nitrocellulose-based propellants
The present disclosure is directed to a nitrocellulose-based propellant composition comprising: (a) a nitrate ester-based propellant comprising nitrocellulose; and (b) a stabiliser comprising a non-aromatic compound (12) consisting of a general ionone formula (12-I), (12-II), (12-III) or (12-IV): ##STR00001##
wherein R.sup.1 represents a ketone, hydroxyl, carboxyl, aldehyde or an unsaturated alkyl group, preferably C(O)CH.sub.3 (corresponding to alpha, beta, gamma and pseudo ionone).
Ionone stabilisers for nitrocellulose-based propellants
The present disclosure is directed to a nitrocellulose-based propellant composition comprising: (a) a nitrate ester-based propellant comprising nitrocellulose; and (b) a stabiliser comprising a non-aromatic compound (12) consisting of a general ionone formula (12-I), (12-II), (12-III) or (12-IV): ##STR00001##
wherein R.sup.1 represents a ketone, hydroxyl, carboxyl, aldehyde or an unsaturated alkyl group, preferably C(O)CH.sub.3 (corresponding to alpha, beta, gamma and pseudo ionone).
Tocopherol stabilisers for nitrocellulose-based propellants
The present disclosure is directed to a nitrocellulose-based propellant composition comprising: (a) a nitrate ester based propellant comprising nitrocellulose; and (b) a stabilizer consisting of a tocopherol compound with a general formula (I), ##STR00001##
wherein: X is oxygen; R.sup.1 is selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, aryl, heteroaryl, carboxylic acid, carboxylate, ester, saccharide, alkoxy-linked saccharide, alcohol, and ethers; R.sup.2 is selected from the group consisting of hydrogen methyl, benzyl carboxylic acid, benzyl carboxylate, benzylester and saccharide; R.sup.3 is selected from the group consisting of hydrogen, methyl, benzyl carboxylic acid, benzyl carboxylate, benzylester and saccharide; R.sup.4 is selected from the group consisting of methyl, benzyl carboxylic acid, benzyl carboxylate, benzylester and saccharide; and R.sup.5 is selected from the group consisting of alkyl and alkenyl.
Stabilized nitrocellulose-based propellant composition
The present invention concerns a nitrocellulose-based propellant composition comprising: (a) a nitrate ester based propellant consisting of nitrocellulose alone (single base) or in combination at least with a blasting oil (double or higher base); and (b) a stabilizer consisting of a general formula (I): ##STR00001##
Wherein the stabilizer combines efficient, long term stability of the nitrocellulose-based propellants composition without formation of any detectable amounts of carcinogenic or mutagenic by-products, such as NNO groups.
Stabilized nitrocellulose-based propellant composition
The present invention concerns a nitrocellulose-based propellant composition comprising: (a) a nitrate ester based propellant consisting of nitrocellulose alone (single base) or in combination at least with a blasting oil (double or higher base); and (b) a stabilizer consisting of a general formula (I): ##STR00001##
Wherein the stabilizer combines efficient, long term stability of the nitrocellulose-based propellants composition without formation of any detectable amounts of carcinogenic or mutagenic by-products, such as NNO groups.
IONONE STABILISERS FOR NITROCELLULOSE-BASED PROPELLANTS
The present disclosure is directed to a nitrocellulose-based propellant composition comprising: (a) a nitrate ester-based propellant comprising nitrocellulose; and (b) a stabiliser comprising a non-aromatic compound (12) consisting of a general ionone formula (12-I), (12-II), (12-III) or (12-IV):
##STR00001##
wherein le represents a ketone, hydroxyl, carboxyl, aldehyde or an unsaturated alkyl group, preferably C(O)CH.sub.3 (corresponding to alpha, beta, gamma and pseudo ionone).
IONONE STABILISERS FOR NITROCELLULOSE-BASED PROPELLANTS
The present disclosure is directed to a nitrocellulose-based propellant composition comprising: (a) a nitrate ester-based propellant comprising nitrocellulose; and (b) a stabiliser comprising a non-aromatic compound (12) consisting of a general ionone formula (12-I), (12-II), (12-III) or (12-IV):
##STR00001##
wherein le represents a ketone, hydroxyl, carboxyl, aldehyde or an unsaturated alkyl group, preferably C(O)CH.sub.3 (corresponding to alpha, beta, gamma and pseudo ionone).