Process for preparing light curable energetic binder
AssigneeThe United States of America as represented by the Secretary of the Army
InventorsAlexander Paraskos, Edward D. Cooke, Eric R. Beckel
Life of this patent
Estimating the term…
Abstract
The present invention is directed to a process for preparing light curable energetic polymeric binders. The process for preparing such binder comprises the steps of mixing a pre-polymer such as PGN or GAP having a terminal hydroxyl group with a solvent and adding reactants wherein the reactant has a light curable moiety and a pre-polymer reactive moiety. Catalysts such as carbodiimide and DMAP may be further added to the mixture.
Claims10
A process for preparing light curable energetic polymeric binder comprising:
- a. combining a pre-polymer, wherein the pre-polymer is polyglycidyl nitrate (PGN) having a terminal hydroxyl group or polyglycidyl azide (GAP) having a terminal hydroxyl group, with a solvent wherein said solvent is dichloromethane, acetone or tetrahydrofuran to form a mixture;
- b. adding a reactant having a pre-polymer reactive moiety and a light curable moiety wherein said light curable moiety is an alkene, alkyne or acrylate to the mixture;
- c. cooling the mixture to below 0° C.;
- d. warming the mixture to room temperature;
- and
- e. recovering the formed light curable energetic polymer.
A process for preparing light curable energetic polymer binder comprising:
- a. combining a pre-polymer, wherein the pre-polymer is polyglycidyl nitrate (PGN) having a terminal hydroxyl group or polyglycidyl azide (GAP) having a terminal hydroxyl group, with a solvent wherein said solvent is dichloromethane, acetone or tetrahydrofuran to form a mixture;
- b. adding a reactant having pre-polymer reactive moiety, wherein the pre-polymer reactive moiety is a carboxylic acid and a light curable moiety wherein said light curable moiety is an alkene, alkyne or acrylate to the mixture;
- c. cooling the mixture to below 0° C.;
- d. adding a catalyst to the mixture wherein the catalyst is a carbodiimide or DMAP;
- e. warming the mixture to room temperature;
- and
- f. recovering the formed light curable energetic polymer.
A process for preparing light curable energetic polymer binder comprising:
- a. combining a pre-polymer, wherein the pre-polymer is polyglycidyl nitrate (PGN) having a terminal hydroxyl group or polyglycidyl azide (GAP) having a terminal hydroxyl group, with a solvent wherein said solvent is dichloromethane, acetone or tetrahydrofuran to form a mixture;
- b. adding a reactant having pre-polymer reactive moiety, wherein the pre-polymer reactive moiety is a acryloyl chloride, acrylic anhydride, or 2-isocyanatoethyl acrylate and a light curable moiety wherein said light curable moiety is an alkene, alkyne or acrylate to the mixture;
- c. cooling the mixture to below 0° C.;
- d. warming the mixture to room temperature;
- and
- e. recovering the formed light curable energetic polymer.
Dependencies are inferred from the claim text.