POLYETHYLENEIMINE CURED EPOXY-MODIFIED PAPER
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Abstract
PROCESS FOR PRODUCING EPOXY-MODIFIED PAPER BY A CHEMICAL REACTION ON A CONVENTIONAL PAPER MACHINE BY ADDING AT SEPARATE POINTS IN THE PAPERMAKING PROCESS UPSTREAM OF A HEATING SECTION A HIGH MOLECULAR WEIGHT, POLYETHYLEINEIMINE WHICH IS SUBSTANTIVE TO PAPER AND ADDING AT A SEPARATE POINT AN AQUEOUS DISPERSION OF AN UNREACTED EPOXY RESIN SUCH AS VINYL CYCLOHEXANE DIOXIDE WHICH IS CURABLE BY SAID POLYETHYLENEIMINE.
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