US PATENT SUBCLASS 585 / 484
.~.~ Polycyclic


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

400  DF  AROMATIC COMPOUND SYNTHESIS {15}
483  DF  .~ By dealkylation {2}
484.~.~ Polycyclic {1}
485  DF  .~.~.~> Using catalyst and H


DEFINITION

Classification: 585/484

Polycyclic:

(under subclass 483) Subject matter in which the feedstock is an alkylated aromatic hydrocarbon having more than one ring, e.g., naphthalene, tetralin, indane, fluorene, diphenyl, phenycyclohexane, phenylcyclopentene, diphenylmethane, etc.

(1) Note. A process which employs a hydrogen donor compound, rather than elemental hydrogen, is classified in

this subclass, rather than in subclass 485.

SEE OR SEARCH THIS CLASS, SUBCLASS:

257, for a process wherein a hydrocarbon compound supplies hydrogen for saturating an unsaturated bond of another hydrocarbon molecule, the latter being recovered as a product.