US PATENT SUBCLASS 585 / 601
.~ Diolefin product

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

500  DF  UNSATURATED COMPOUND SYNTHESIS {14}
601.~ Diolefin product {4}
602  DF  .~.~> With heat conservation or using solid inert heat carrier, e.g., regenerative furnace, etc.
603  DF  .~.~> From nonhydrocarbon feed {3}
613  DF  .~.~> By C content reduction, e.g., cracking, etc. {2}
616  DF  .~.~> By dehydrogenation {3}

DEFINITION

Classification: 585/601

Diolefin product:

(under subclass 500) Subject matter wherein the synthesis operation produces a compound having two olefinically unsaturated bonds in the molecule.

(1) Note. This subclass (601) is the locus for conversion of a triple bond to two double bonds, e.g., methyl acetylene to allene, etc., and for double bond shift isomerization to form a diolefin.

SEE OR SEARCH THIS CLASS, SUBCLASS:

377+, and 664+, for the synthesis, by double bond shift, of cycloolefins and monoolefins, respectively.