US PATENT SUBCLASS 585 / 472
.~.~.~ Using Al or B halide catalyst

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

400  DF  AROMATIC COMPOUND SYNTHESIS {15}
470  DF  .~ By alkyl or aryl transfer between molecules, e.g., disproportionation, etc. {3}
471  DF  .~.~ Product is polycyclic, of increased side-chain length, or a specific position polyalkyl benzene isomer {1}
472.~.~.~ Using Al or B halide catalyst {1}
473  DF  .~.~.~.~> Meta- or 1,3,5-alkyl benzene

DEFINITION

Classification: 585/472

Using Al or B halide catalyst:

(under subclass 471) Subject matter wherein the synthesis takes place in the presence of an aluminum halide or a boron halide.

SEE OR SEARCH THIS CLASS, SUBCLASS:

473, and 474, for averaging and other transalkylation processes, respectively, using a halogen-containing catalyst.