Patents Assigned to PB CLERMONT
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Patent number: 10590047Abstract: 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 R1 represents a ketone, hydroxyl, carboxyl, aldehyde or an unsaturated alkyl group, preferably —C(O)CH3 (corresponding to alpha, beta, gamma and pseudo ionone).Type: GrantFiled: February 25, 2016Date of Patent: March 17, 2020Assignee: PB CLERMONTInventors: Alain Dejeaifve, Rowan Dobson
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Patent number: 10414697Abstract: 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), 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.Type: GrantFiled: February 25, 2016Date of Patent: September 17, 2019Assignee: PB CLERMONTInventors: Alain Dejeaifve, Rowan Dobson
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Patent number: 10246381Abstract: 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: GrantFiled: October 1, 2014Date of Patent: April 2, 2019Assignee: PB CLERMONT SAInventors: Alain Dejeaifve, Vincent Berton, Rowan Dobson
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Publication number: 20180029952Abstract: 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.Type: ApplicationFiled: February 25, 2016Publication date: February 1, 2018Applicant: PB CLERMONT SAInventors: ALAIN DEJEAIFVE, ROWAN DOBSON
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Publication number: 20180029951Abstract: 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).Type: ApplicationFiled: February 25, 2016Publication date: February 1, 2018Applicant: PB CLERMONT SAInventors: ALAIN DEJEAIFVE, ROWAN DOBSON
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Publication number: 20160236998Abstract: 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: ApplicationFiled: October 1, 2014Publication date: August 18, 2016Applicant: PB CLERMONT SAInventors: ALAIN DEJEAIFVE, VINCENT BERTON, ROWAN DOBSON