US PATENT SUBCLASS 585 / 448
.~.~ With preliminary treatment of feed


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

400  DF  AROMATIC COMPOUND SYNTHESIS {15}
446  DF  .~ By condensation of entire molecules or entire hydrocarbyl moieties thereof, e.g., alkylation, etc. {13}
448.~.~ With preliminary treatment of feed


DEFINITION

Classification: 585/448

With preliminary treatment of feed:

(under subclass 446) Subject matter wherein the hydrocarbon feed is treated prior to the alkylation reaction, e.g., by separating nonhydrocarbons therefrom, by separating the feed into several different fractions, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

323, for a process wherein an intermediate is formed in an aromatic synthesis process which includes an alkylation step.