Briefly, this object and other objects of the invention as hereinafter will become more readily apparent can be attained by coating 21 carboxylataed ethylene copolymer which is prepared by copolymerizing and 04,5- unsaturated carboxylic acid and/or anhydride and at least one vinylidene monomer of the formula wherein X and Y are the same or different and each represent hydrogen, chlorine, lower alk