| 摘要 |
Energetic copolymers having repeating mer units derived from different monomers, one or both of which have pendant energetic groups such as azido, nitro or nitrato groups. Copolymers have improved formulating characteristics compared to homopolymers of the energetic monomers; e.g., they are less crystalline or less viscous. Preferably the monomers are cyclic oxides having three to six atoms in the ring. The energetic monomers are preferably azido, nitro or nitrato derivatives of oxetane or THF. Copolymerization is preferably carried out by cationic polymerization using an adduct of the preinitiator precursor (e.g., 1,4-butane diol) and a catalyst suitable for cationic polymerization (e.g., boron trifluoride etherate) which is employed in stoichiometric proportion to the monomers and a low molecular weight, low polydispersity copolymer results. Certain novel monomers also are provided.
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