Nitroester propellant, casing, and liner of an epoxy-polyamide copolymer containing a stabilizer

Claim 1

A LINED PROPELLANT DEVICE CONSISTING ESSENTIALLY OF: A SOLID NITROESTER PROPELLANT; A CASING ENCLOSING SAID SOLID NITROESTER PROPELLANT; AND A LINER WHICH COATS THE INNER SURFACE OF SAID CASING AND WHICH IS IN CONTACT WITH SAID PROPELLANT; WHEREIN SAID LINER COMPRISES (1) THE CURED REACTION PRODUCT OF 170 TO 800, A MELTRESIN HAVING AN EPOXIDE EQUIVALENT OF 170 TO 800, A MELTING POINT OF 55* TO 165*C, A GRADNER HOLT VISOCITY (40 PERCENT EPOXY RESIN IN BUTYL CARBITOL) RANGING FROM D TO J AND A SPECIFIC GRAVITY FROM ABOUT 1.1 TO 1.3, WITH A POLYAMMIDE WHICH CONTAINS FREE AMINE GROUPS AND HAS AN AMINE VALUE OF 210-260, A VISCOSITY AT 40*C OF 450-1400 POISE AND A SPECIFIC GRAVITY OF 0.90-0.99, AND (2) ABOUT 2 TO ABOUT 10 PERCENT, BASED ON THE WEIGHT OF SAID LINER, OF A STABILIZER SELECTED FROM THE GROUP CONSISTING OF AMYL ALCOHOL, 2 NITRODIPHENYLAMINE, NAPHTHALENE, NITRONAPH- THALENE AND A MIXTURE OF ETHYL CENTRALITE AND RESORCINOL IN A RATIO OF FROM ABOUT 1:2 TO 2:1.