US PATENT SUBCLASS 585 / 656
.~.~ Using acceptor, e.g., hydrogen-exchange disproportionation, etc.

Current as of: June, 1999
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585 /   HD   CHEMISTRY OF HYDROCARBON COMPOUNDS

500  DF  UNSATURATED COMPOUND SYNTHESIS {14}
654  DF  .~ By dehydrogenation {5}
656.~.~ Using acceptor, e.g., hydrogen-exchange disproportionation, etc. {2}
657  DF  .~.~.~> Halogen-containing acceptor
658  DF  .~.~.~> Elemental O or S acceptor with extraneous nonhydrocarbon agent, e.g., catalyst, etc.

DEFINITION

Classification: 585/656

Using acceptor, e.g., hydrogen-exchange disproportionation, etc.:

(under subclass 654) Subject matter wherein the dehydrogenation employs an element or compound which

chemically reacts with the removed hydrogen, being itself thereby changed to a more hydrogenated material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

257, for a process wherein a hydrocarbon is the acceptor and the more hydrogenated hydrocarbon is a desired product.

433, and 617+, for similar processes yielding aromatics and diolefins, respectively.