Energetic copolymers and method of making same

Details Energetic copolymers and method of making same Energetic copolymers and method of making same

1982-05-18

1984-11-20

Briggs, Sr., Wilbert J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From heterocyclic reactant containing as ring atoms oxygen,...

149 88, 260349, 528417, C08G 6522

Patent

active

044839782

ABSTRACT:
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.

REFERENCES:
patent: 3112280 (1963-11-01), Farthing
patent: 3347801 (1967-10-01), Stogryn
patent: 3557181 (1971-01-01), Lakritz et al.
patent: 3645917 (1972-02-01), Vandenberg
patent: 4250294 (1981-02-01), Hagel et al.
patent: 4268450 (1981-05-01), Frankel et al.
patent: 4405762 (1983-09-01), Earl et al.

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