Rocket fuels based on metal hydrides and poly-DCPD
AssigneeA.P.T. Aerospace, L.L.C.
InventorsCharles S. Woodson, Robert H. Grubbs, Ronald W. Humble
Life of this patent
Estimating the term…
Abstract
Preferred embodiments of the present invention relate to rocket fuels comprising metal hydrides and poly-dicyclopentadiene (“poly-DCPD”). Although poly-DCPD also has physical and chemical properties that are compatible with being used as a rocket fuel in its own right, its primary function is as a binder for the metal hydride. Illustrative examples of metal hydrides include but are not limited to as aluminum hydrides, lithium hydrides, and lithium aluminum hydrides.
Claims26
A rocket fuel comprising a metal hydride and a ROMP-derived polymer.
A rocket fuel comprising poly-dicyclopentadiene and a metal hydride selected from the group consisting of aluminum hydride, lithium hydride, and lithium aluminum hydride.
A method for making a rocket fuel comprising:
- p1 contacting a cyclic olefin with a metathesis catalyst of the formula
- 2
- in the presence of a metal hydride,
- wherein:
- M is ruthenium or osmium;
- X and X1 are each independently any anionic ligand;
- L and L1 are each independently any neutral electron donor ligand;
- and,
- R and R1 are each independently hydrogen or substituent selected from the group consisting of C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, aryl, C1-C20 carboxylate, C1-C20 alkoxy, C2-C20 alkenyloxy, C2-C20 alkynyloxy, aryloxy, C2-C20 alkoxycarbonyl, C1-C20 alkylthio, C1-C20 alkylsulfonyl and C1-C20 alkylsulfinyl, the substituent optionally substituted with one or moieties selected from the group consisting of C1-C10 alkyl, C1-C10 alkoxy, and aryl.
A method for making a rocket fuel comprising
- contacting dicyclopentadiene w metathesis catalyst of the formula
- 3
- in the presence of a metal hydride,
- wherein:
- M is ruthenium;
- X and X1 are each chloride;
- L and L1 are both selected from a group consisting of are selected from a group consisting of —P(cyclohexyl)3, —P(cyclopentyl)3, —P(isopropyl)3, and —P(phenyl)3;
- R is hydrogen;
- and,
- R1 is phenyl or —C═C(CH3)2.
Dependencies are inferred from the claim text.