Alliant Techsystems Inc.

Michael A Dewey

Andrew J Sanderson

Alexander J Paraskos

Wayne Edwards

Laura J Martins

A method is provided in which PGN is end-modified in a process using a single solvent. The resulting end-modified PGN may be stably crosslinked using aliphatic polyisocyanates. Further provided are methods of producing energetic compositions comprising PGN which has been end-modified in a process using a single solvent. Such energetic compositions may be stably crosslinked using aliphatic polyisocyanates.

One pot procedure for poly (glycidyl nitrate) end modification

A process is provided in which at least one multi-functional alcohol having a hydroxyl functionality of at least two serves as a polymerization initiator. The multi-functional alcohol initiator is optionally, although preferably, reacted with a catalyst to form a catalyst-initiator complex, which is then used in the polymerization of glycidyl nitrate. The resulting poly(glycidyl nitrate) has a functionality substantially equivalent in number to the hydroxyl functionality of the multi-functional alcohol initiator. The poly(glycidyl nitrate) is cross-linked with at least one aromatic polyisocyanate having at least one aromatic ring and, on average, more than two isocyanate moieties bonded directly to the aromatic ring.

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Ogden, UT, United States of America

Michael A Dewey