US PATENT SUBCLASS 423 / 588
.~.~.~.~ By oxidizing hydroquinone or anthraquinone

Current as of: June, 1999
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423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

579  DF  OXYGEN OR COMPOUND THEREOF {4}
582  DF  .~ Peroxide {2}
584  DF  .~.~ Hydrogen {3}
587  DF  .~.~.~ From organic reactant {2}
588.~.~.~.~ By oxidizing hydroquinone or anthraquinone {2}
589  DF  .~.~.~.~.~> Including dissolving reactant in ester containing solvent
590  DF  .~.~.~.~.~> Including dissolving reactant in alcohol containing solvent

DEFINITION

Classification: 423/588

(under subclass 587) Processes wherein the preparation of hydrogen peroxide includes the step of oxidizing a reactant comprising a hydroquinone or an anthraquinone, or substituted forms thereof.

(1) Note. Included in this subclass are disclosures which describe cyclic processes in which hydroquinone or anthrahydroquinone is first oxidized to form hydrogen peroxide and a quinone or anthraquinone. The latter two compounds are than reduced to the corresponding hydroquinone or anthrahydroquinone which is then oxidized to again form the hydrogen peroxide and the quinone or hydroquinone.

SEE OR SEARCH CLASS

552, Organic Compounds,

208+, for processes for reducing anthroquinone to anthroahydrouquinone; subclasses 291+ and 293+ for processes for reducing quinone to hydroquinone.