US PATENT SUBCLASS 585 / 259
.~.~ Hydrogenation of diolefin or triple bond

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

250  DF  ADDING HYDROGEN TO UNSATURATED BOND OF HYDROCARBON, I.E., HYDROGENATION {10}
258  DF  .~ Hydrocarbon is contaminant in desired hydrocarbon {1}
259.~.~ Hydrogenation of diolefin or triple bond {3}
260  DF  .~.~.~> Using catalyst or support of defined structure, surface area, or pore size
261  DF  .~.~.~> Using catalyst and additional nonmetal material
262  DF  .~.~.~> Using S or Group I or II transition metal-containing catalyst

DEFINITION

Classification: 585/259

Hydrogenation of diolefin or triple bond:

(under subclass 258) Subject matter wherein the contaminant has a triple bond which is hydrogenated or has two double bonds, one or both of which is hydrogenated.

(1) Note. Examples of subject matter contained herein are the conversion of acetylene impurity contained in ethylene to more ethylene, conversion of butadiene impurity to butene or butane, etc.