US PATENT SUBCLASS 585 / 717
.~.~ With preliminary treatment of feed


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

700  DF  SATURATED COMPOUND SYNTHESIS {11}
709  DF  .~ By condensation of a paraffin molecule with an olefin-acting molecule, e.g., alkylation, etc. {11}
717.~.~ With preliminary treatment of feed


DEFINITION

Classification: 585/717

With preliminary treatment of feed:

(under subclass 709) Subject matter wherein the hydrocarbon feed is treated prior to the alkylation reaction, e.g., by separating nonhydrocarbon therefrom, by separating the feed into several different fractions, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

310+, for a process wherein an intermediate is formed by a chemical reaction before use in an alkylation process, especially subclass 332 for those processes wherein preliminary polymerization is carried out to obtain an olefin polymer and at least a portion of the olefin polymer is subsequently alkylated, or where the feedstock is isomerized before alkylation.