US PATENT SUBCLASS 585 / 721
.~.~ Using extraneous nonhydrocarbon agent

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}
721.~.~ Using extraneous nonhydrocarbon agent {6}
722  DF  .~.~.~> Aluminosilicate or organometallic
723  DF  .~.~.~> HF {1}
726  DF  .~.~.~> B-containing
727  DF  .~.~.~> Al halide {1}
730  DF  .~.~.~> S-containing {1}
732  DF  .~.~.~> O-containing

DEFINITION

Classification: 585/721

Using extraneous nonhydrocarbon agent:

(under subclass 709) Subject matter wherein part or all of the synthesis takes place in the presence of material containing an atom other than carbon and hydrogen, which chemically affects the synthesis by promoting, retarding, etc., which does not form a part of the desired product and is, at least in theory, separable from the desired reaction products. The agent may be a catalyst, solvent, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

403, 503, 537, 636, and 920, for processes which employ apparatus of recited composition, in some cases the composition (e.g., a reactor lining) being or containing a catalytic agent.

520+, for a polymerization reaction utilizing an ethylenically unsaturated feed in the presence of a chemically effective agent, e.g., catalyst.

704, 706, 707, 710, and 712, for certain procedures in paraffin synthesis in general or alkylation in particular dealing with catalysts and catalyst components.

SEE OR SEARCH CLASS

516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 113+, for compositions for or subcombination compositions for or breaking of or inhibiting of colloid systems (e.g., foam breaking, emulsion breaking, dispersion inhibiting, suspension settling, gel breaking, smoke suppressing, coagulating, flocculating), when generically claimed or when there is hierarchically superior provision in the USPC for the specifically claimed art.