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Graft polymerization on a paper base by ionizing radiation

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1. METHOD OF GRAFTING A POLYMERIC COATING ON THE CELLULOSE MOLECULES OF PAPER, COMPRISING COATING A SURFACE OF SAID PAPER WITH A MONOMER HAVING A POLYMERIZABLE VINYL GROUP, EXPOSING SAID COATED SURFACE TO HIGH ENERGY IONIZING RADIATION EQUIVALENT TO AT LEAST ABOUT 100,000 ELECTRON VOLTS AT A DOSAGE OF NOT MORE THAN ABOUT 100,000 RADS PER PASS, SAID DOSAGE BEING LESS THAN DOSAGE NEEDED FOR COMPLETELY POLYMERIZING SAID MONOMER, AND REPEATING SAID EXPOSURE UNTIL SAID MONOMER HAS POLYMERIZED AND IS GRAFTED ON SAID PAPER, THE INTERVALS BETWEEN SUCCESSIVE EXPOSURES BEING AT LEAST ABOUT 15 MINUTES EACH, SAID PAPER BEING AT AN ELEVATED TEMPERATURE OF ABOUT 40*-85*C. DURING SAID INTERVALS.
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