Solid propellant compositions containing polyurethane resins

Claim 1

A SOLID PROPELLANT COMPOSITION CONSISTING EASSENTIALLY OF A CURED INTIMATE MIXTURE OF A SOLID INORGANIC OXIDIZING SALT AND A RESIN BINDER CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF A COMPOUND HAVING TWO ACTIVE HYDROGEN GROUPS CAPABLE OF REACTING WITH AN ISOCYANATE, SELECTED FROM THE GROUP CONSISTING OF: (A) ALKANE DIOLS HAVING A CHAIN LENGHT OF FROM 2 TO 20 CARBON ATOMS, INCLUSIVE; (B) ALKANE DITHIOLS HAVING A CHAING LENGTH OF FROM 2 TO 20 CARBON ATOMS, (C) ALKENE DIOLS; (D) ALKENE DITHIOLS; (E) CYCLOALKYLENE DIOLS; (F) CYCLOALKYLENE DITHIOLS; (G) AROMATIC DIOLS; (H) AROMATIC DITHIOLS; (I) DIHYDROXY POLYESTERS HAVING A MOLECULAR WEIGHT FROM ABOUT 1000 TO ABOUT 2500; (J) POLYALKYLENE ETHER GLYCOLS HAVING A MOLECULAR WEIGHT FROM ABOUT 400 TO ABOUT 10,000; (K) POLYSULFIDES WITH GLYCOL END GROUPS; AND MIXTURES THEREOF, AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF; (1) ALKANE DISOCYANATES; (2) ALKANE DISOTHIOCYANATES; (3) ALKENE DISOCYANATES; (4) ALKENE DISOTHIOCYANATES; (5) ALKYLIDENE DIISOCYANATES; (6) ALKYLIDENE DIISOTHIOCYANATES; (7) CYCLOALKYLENE DIISOCYANATES; (8) CYCLOALKYLENE DIISOTHIOCYANTES; (9) CYCLOALKYLIDENE DIISOCYANATES; (10) CYCLOALKYLIDENE DIISOTHIOCYANATES; (11) AROMATIC DIISOCYANATES; (12) AROMATIC DIISOTHIOCYANTES; AND MIXTURES THEREOF, SAID SOLID INROGANIC OXIDIZING SALT BEING PRESENT IN AN AMOUNT BETWEEN ABOUT 45 AND ABOUT 95 PERCENT BY WEIGHT OF THE PROPELLANT COMPOSITION, AND SAID RESIN BINDER BEING PRESENT IN AN AMOUNT BETWEEN ABOUT 55 AND ABOUT 5 PERCENT BY WEIGHT OF THE PROPELLANT COMPOSITION.