Polyurethane-base propellants containing unsaturated hydrocarbons

Claim 1

A SOLID PROPELLANT COMPOSITION POSSESSING IMPROVED AGING STABILITY WHICH COMPRISES A CURED INTIMATE MIXTURE OF A SOLID INORGANIC NITRATE OXIDIZING SALT, A POLYURETHANE RESIN BINDER WHICH COMPRISES THE REACTION PRODUCT OF A COMPOUND HAVING AS ITS SOLE REACTING GROUPS NOT LESS THAN TWO ACTIVE HYDROGEN GROUPS AS DETERMINED BY THE ZEREWITNOFF METHOD AND CAPABLE OF POLYMERIZING WITH AN ISOCYANATE, AND A COMPOUND HAVING AS ITS SOLE REACTING GROUPS NOT LESS THAN TWO GROUPS CAPABLE OF UNDERGOING A URETHANE-TYPE REACTION WITH HYDROXY GROUPS; AND AN UNSATURATED ALIPHATIC, ACYCLIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF ISOPRENOIDS AND TERPENOIDS AND HAVING A MOLECULAR WEIGHT OF FROM ABOUT 200 TO ABOUT 1000 AND HAVING AT LEAST ONE CARBON-TO-CARBON UNSATURATED LINKAGE OF EACH 100 MOLECULAR WEIGHT UNIT, SAID SOLID INORGANIC NITRATE OXIDIZING SALT BEING PRESENT IN AN AMOUNT BETWEEN ABOUT 45 AND ABOUT 95 PERCENT BY WEIGHT OF THE PROPELLANT COMPOSITION, SID POLYURETHANE RESIN BINDER BEING PRESENT IN AN AMOUNT BETWEEN ABOUT 55 AND ABOUT 5 PERCENT BY WEIGHT OF THEPROPELLANT COMPOSITION, AND SAID UNSATURATED HYDROCARBON COMPOUND BEING PRESENT IN AN AMOUNT BETWEEN ABOUT 0.05 AND ABOUT 10 PERCENT BY WEIGHT OF THE PROPELLANT COMPOSITION.