Propellant binder prepared from a pcp/htpb block polymer

Details Propellant binder prepared from a pcp/htpb block polymer Propellant binder prepared from a pcp/htpb block polymer

C - Chemistry, Metallurgy

08

G

400/2034, 52/39

C08G 81/02 (2006.01) C06B 45/00 (2006.01) C06B 45/10 (2006.01) C08G 18/69 (2006.01)

Patent

CA 1304179

112-22-00 PROPELLANT BINDER PREPARED FROM A PCP/HTPB BLOCK POLYMER ABSTRACT OF THE DISCLOSURE Binders for propellants for the like comprise elastomers which are based on block copolymers in which a pair of poly(caprolactone) blocks flank a central hydroxyl-terminated poly(butadiene) block. The block polymers are cured with isocyanates through the OH termini of the poly(caprolactone) blocks. The elastomers have inherent energies and other characteristics intermediate those of PCP and HTPB and have good compatibility with nitrate ester plasticizers.

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