Solid propellant binder and propellant

A solid polyurethane propellant binder composition which comprises a nitrocellulose-polyester polyurethane composition comprising the reaction product of nitrocellulose plasticized with a plasticizer selected from the group consisting of nitroglycerin and triethyleneglycol dinitrate, an aromatic diisocyanate, and a polyglycol adipate polyester having a molecular weight of about 500 to 3,000, wherein said plasticizer is present in the proportion of about 40 to 60 parts by weight per 100 parts by weight of binder composition, wherein said nitrocellulose contains about 11.0 to 13.0% nitrogen and is present in the proportion of about 0.7 to 1.0 part per part of said polyester, and wherein said diisocyanate is present in an amount to provide an NCO/OH ratio of said diisocyanate to said polyester of about 1.2/1 to 3.0/1.

A solid propellant composition which comprises about 10 to 70 percent by weight of the total propellant composition of an inorganic oxidizing salt and about 30 to 90 percent by weight of the total propellant composition of a polyurethane binder composition comprising the reaction product of nitrocellulose plasticized with a plasticizer selected from the group consisting of nitroglycerin and triethyleneglycol dinitrate, and aromatic diisocyanate and a polyol having a molecular weight of about 500 to 3,000 selected from the group consisting of dicarboxylic acid-polyol-polyesters and polyoxyalkylene ethers and mixtures thereof wherein said plasticizer is present in the proportion of about 40 to 60 parts by weight per 100 parts by weight of binder composition, wherein said nitrocellulose contains about 11.0 to 13.0% nitrogen and is present in the proportion of about 0.7 to 1.0 part per part of said polyol and wherein said diisocyanate is present in an amount to provide an NCO/OH ratio of said diisocyanate to said polyol of about 1.2/1 to 3.0/1 and wherein said inorganic oxidizing salt is dispersed within said polyurethane binder.

A solid propellant composition which comprises about 15 to 60 percent by weight of the total propellant composition of an inorganic oxidizing salt, about 10 to 30 percent by weight of the total propellant composition of a powdered metal selected from the group consisting of aluminum, magnesium, titanium, zirconium, boron, alloys thereof and mixtures thereof, and about 20 to 65 percent by weight of the total propellant composition of a polyurethane binder composition comprising the reaction product of nitrocellulose plasticized with a plasticizer selected from the group consisting of nitroglycerin and triethyleneglycol dinitrate, an aromatic diisocyanate and a polyol having a molecular weight of about 500 to 3,000 selected from the group consisting of dicarboxylic acid-polyol-polyesters and polyoxyalkylene ethers and mixtures thereof wherein said plasticizer is present in the proportion of about 40 to 60 parts by weight per 100 parts by weight of binder composition, wherein said nitrocellulose contains about 11.0 to 13.0% nitrogen and is present in the proportion of about 0.7 to 1.0 part per part of said polyol and wherein said diisocyanate is present in an amount to provide an NCO/OH ratio of said diisocyanate to said polyol of about 1.2/1 to 3.0/1 and wherein said inorganic oxidizing salt and said powdered metal are dispersed within said polyurethane binder.

A solid propellant composition which comprises about 15 to 60 percent by weight of the total propellant composition of an inorganic oxidizing salt, about 10 to 30 percent by weight of the total propellant composition of a powdered metal selected from the group consisting of aluminum, magnesium, titanium, zirconium, boron, alloys thereof and mixtures thereof, and about 20 to 65 percent by weight of the total propellant composition of a nitrocellulose polyester polyurethane composition comprising the reaction product of nitrocellulose plasticized with a plasticizer selected from the group consisting of nitroglycerin and triethyleneglycol dinitrate, an aromatic diisocyanate, and a polyglycol adipate polyester having a molecular weight of about 500 to 3,000 wherein said plasticizer is present in the proportion of about 40 to 60 parts by weight per 100 parts by weight of binder composition, wherein said nitrocellulose contains about 11.0 to 13.0% nitrogen and is present in the proportion of about 0.7 to 1.0 part per part of said polyester and wherein said diisocyanate is present in an amount to provide an NCO/OH ratio of said diisocyanate to said polyester of about 1.2/1 to 3.0/1 and wherein said inorganic oxidizing salt and said powdered metal are dispersed within said polyurethane binder.