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METHOD OF POLYPHENYLENOXIDE'S OLIGOMERS MIXTURE INSULATION WITH COPPER FROM MOTHER LIQUORS AFTER 2,6-XYLENOL'S POLYMERIZATION INTO POLYPHENYLENOXIDE
METHOD OF POLYPHENYLENOXIDE'S OLIGOMERS MIXTURE INSULATION WITH COPPER FROM MOTHER LIQUORS AFTER 2,6-XYLENOL'S POLYMERIZATION INTO POLYPHENYLENOXIDE