Hydrogen peroxide purification

Claim 1

A PROCESS FOR REMOVING FROM HYDROGEN PEROXIDE ORGANIC IMPURITIES WHICH ARE CONVERTIBLE TO FORMIC AND ACETIC ACIDS ON HEATING THE PEROXIDE, WHICH HYDROGEN PEROXIDE CONTAINS SAID IMPURITIES TOGETHER WITH CATALYSTS WHICH CATALYZE THE DECOMPOSITION OF HYDROGEN PEROXIDE SAID CATALYSTS BEING BOTH FROM THE GROUP CONSISTING OF IRON, COPPER AND CHROMIUM CATIONS AND FROM THE GROUP CONSISTING OF IRON-CONTAINING, COPPER-CONTAINING, AND CHROMIUM-CONTAINING ANIONIC RADICALS, WHICH COMPRISES (A) CONTACTING SAID HYDROGEN PEROXIDE WITH A QUATERNARY AMMONIUM ANION EXCHANGE RESIN IN SALT FORM TO EFFECT REMOVAL OF SAID CATALYTIC ANIONS (B) CONTACTING THE HYDROGEN PEROXIDE WITH A CATION EXCHANGE RESIN OF THE GROUP CONSISTING OF SULFONIC, PHOSPHONIC, PHOSPHOROUS, AND ARSENIC ACID CATION EXCHANGE RESINS TO REMOVE FROM THE PEROXIDE SAID CATIONIC HEAVY METAL CATALYST (C) PASSING THE THUS PURIFIED HYDROGEN PEROXIDE DIRECTLY TO A HEATER IN WHICH IT IS HEATED AT ABOUT 110* TO ABOUT 250* C. FOR ABOUT 30 SECONDS TO ABOUT 60 MINUTES UNDER SUFFICIENT SUPERATMOSPHERIC PRESSURE TO MAINTAIN THE MIXTURE SUBSTANTIALLY IN THE LIQUID PHASE, SAID HEATING BEING CARRIED OUT SUBSTANTIALLY IN THE ABSENCE OF HEAVY METAL CATALYSTS FOR HYDROGEN PEROXIDE DECOMPOSITION AND WITHOUT SUBSTANTIAL CONCENTRATION OF THE PEROXIDE, (D) AND REMOVING FROM THUS HEATED HYDROGEN PEROXIDE, THE CARBOXYLIC ACIDS PERDOMINATING IN FORMIC AND ACETIC ACIDS WHICH ARE FORMED FROM THE ORGANIC IMPURITIES DURING SAID HEATING.