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US 4,086,284 AGranted
Isomerization of endo-tetrahydrodicyclopentadiene to a missile fuel diluent
AssigneeSuntech, Inc.
InventorsAbraham Schneider, Richard E. Ware, Edward J. Janoski
Life of this patent
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Abstract
Endo-tetrahydrodicyclopentadiene is isomerized to its exo-isomer in the presence of aluminum trichloride at a temperature in the range between from about -.degree. C to about 90.degree. C. The mole ratio of AlCl.sub.3 to the tetrahydrodiene is in the range between from about 0.001 to about 0.75. An inert solvent may also be used. The very facile isomerization is essentially quantitative. The exoisomer has utility as a relatively high BTU/gallon, viscosity-lowering difluent for a missile fuel.
Claims10
Process for isomerizing endo-tetrahydrodicyclopentadiene comprising:
- (a) contacting endo-tetrahydrodicyclopentadiene with anhydrous aluminum trichloride wherein the mole ratio of aluminum trichloride to the tetrahydrodiene is in the range between from about 0.001 to about 0.75 and the temperature of the contacting is in the range between from about -20.degree. C to about 90.degree. C;
- (b) continuing said contacting until at least 70% of the endo-tetrahydrodicyclopentadiene is isomerized to exo-tetrahydrodicyclopentadiene;
- and
- (c) recovering resulting product.
1 more element
Dependencies are inferred from the claim text.