Process for coating polyethylene with a higher melting polyolefinic composition and article therefrom

Claim 1

A PROCESS FOR COATING AN ARTICLE FORMED FROM POLYETHYLENE HAVING A MELTING TEMPERATURE OF ABOUT 220*F. AND PREPARED IN A PROCESS EMPLOYING PRESSURES OF ABOUT 500 TO 3000 ATMOSPHERES TO IMPART IMPROVED PHYSICAL CHARACTERISTICS THERETO COMPRISING FORMING A SOLUTION OF A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, ETHYLENE/PROPYLENE COPOLYMER AND ETHYLENE/ BUTENE-1 COPOLYMER HAVING A MELTING POINT OF ABOUT 240 TO 260*F. AND A DENSITY NOT LESS THAN 0.94 GRAM PER CUBIC CENTIMETER PREPARED IN A CATALYTIC PROCESS EMPLOYING PRESSURES OF ABOUT ATMOSPHERIC TO 700 POUNDS PER SQUARE INCH IN A SOLVENT WHICH WILL GIVE A POLYMER SOLUTION CLOUD POINT BELOW ABOUT 220*F., HEATING SAID SOLUTION TO A TEMPERATURE ABOVE ITS CLOUD POINT AND BELOW ABOUT 220*F., PER-HEATING SAID ARTICLE TO THE APPROXIMATE TEMPERATURE OF SAID SOLUTION, APPLYING SAID SOLUTION THUS HEATED TO THE SURFACE OF SAID ARTICLE BEFORE COOLING THEREOF, AND DRYING SAID ARTICLE AT A TEMPERATURE ABOVE THE CLOUD POINT OF SAID SOLUTION AND BELOW ABOUT 220*F.