Aqueous coating composition containing styrene-butadiene copolymer and polyethylene, process of coating paper therewith and coated article

Claim 1

PAPER COATED WITH A BAKED-ON, CLEAR TRANSPARENT, CONTINUOUS FILM DEPOSITED FROM A WATER EMULSION OF POLYMERIC MATERIAL FROM THE GROUP CONSISTING OF (A) STYRENEBUTADIENE COPOLYMER AND (B) MIXTURE OF POLYSTYRENE AND STYRENE-BUTADIENE COPOLYMER, WHEREIN THE STYRENE MOIETIES OF SAID POLYMERIC MATERIAL COMPRISE THE MAJOR PORTION THEREOF AND THE BUTADIENE MOIETIES COMPRISE THE MINOR PORTION THEREOF, SAID FILM FURTHER CONTAINING AN AMOUNT BETWEEN ABOUT .625% AND 3.32% BY WEIGHT OF POLYETHYLENE UNIFORMLY DISTRIBUTED THROUGH SAID POLYMERIC MATERIAL SUFFICIENT TO IMPART NON-BLOCKING CHARACTERISTICS TO THE FILM WITHOUT INTERRUPTING THE CONTINUITY OF THE FILM AND ITS CLEAR TRANSPARENT CHARACTER, SAID FILM STRONGLY ADHERING TO THE SURFACE OF THE PAPER BUT NOT DEEPLY IMPREGNATING THE PAPER, AND SAID FILMED PAPER POSSESSING HEAT-INSULATING AS WELL AS NON-BLOCKING CHARACTERISTICS AND IMPROVED RESISTANCE TO PENETRATION, STAINING AND DISINTEGRATION OF THE PAPER BY HOT AND COLD BEVERAGES SUCH AS COFFEE, TEA, MILK, COCOA AND FRUIT JUICES, SAID FILM FURTHER BEING ESSENTIALLY FREE OF TASTE AND ODOR WHILE TENDING TO MASK THE TASTE OF THE PAPER OVER WHICH IT IS COATED.