Abstract: 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): 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.
Type:
Grant
Filed:
October 1, 2014
Date of Patent:
April 2, 2019
Assignee:
PB CLERMONT SA
Inventors:
Alain Dejeaifve, Vincent Berton, Rowan Dobson
Abstract: The present disclosure is directed to a nitrocellulose-based propellant composition comprising: (a) a nitrate ester based propellant comprising nitrocellulose; and (b) a stabiliser consisting of a tocopherol compound with a general formula (I), wherein: X is oxygen; R1 is selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, aryl, heteroaryl, carboxylic acid, carboxylate, ester, saccharide, alkoxy-linked saccharide, alcohol, and ethers; R2 is selected from the group consisting of hydrogen methyl, benzyl carboxylic acid, benzyl carboxylate, benzylester and saccharide; R3 is selected from the group consisting of hydrogen, methyl, benzyl carboxylic acid, benzyl carboxylate, benzylester and saccharide; R4 is selected from the group consisting of methyl, benzyl carboxylic acid, benzyl carboxylate, benzylester and saccharide; and R5 is selected from the group consisting of alkyl and alkenyl.
Abstract: 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): wherein le represents a ketone, hydroxyl, carboxyl, aldehyde or an unsaturated alkyl group, preferably —C(O)CH3 (corresponding to alpha, beta, gamma and pseudo ionone).
Abstract: 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): 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.
Type:
Application
Filed:
October 1, 2014
Publication date:
August 18, 2016
Applicant:
PB CLERMONT SA
Inventors:
ALAIN DEJEAIFVE, VINCENT BERTON, ROWAN DOBSON