Curable binding systems

Details Curable binding systems Curable binding systems

C - Chemistry, Metallurgy

08

L

52/13, 400/4302

C08L 79/00 (2006.01) C06B 29/22 (2006.01) C06B 45/10 (2006.01) C08G 18/69 (2006.01) C08L 75/04 (2006.01) C08L 75/14 (2006.01)

Patent

CA 1056984

ABSTRACT OF THE DISCLOSURE A curable binder for use in forming a castable propellant of the hydroxy terminated polybutadiene type uses two bonding agents, an aziridine polyester and an amine polyester. The amount of aziridine polyester is reduced by a factor of 3 to 4 compared to known systems. Improved pro- pellant properties, including elongation at maximum load, and at rupture while maintaining comparable tensile strength and initial moduli, are obtained. A diisocyanate curing agent, an antioxidant such as phenyl-beta-naphthyl amine and isodecyl pelargonate as a plasticizer may be included.

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