Chapter --Polymers of ethylene, in primary forms (3901)
Result ------ Ionomer resin consisting of a salt of a terpolymer of ethylene with isobutyl acrylate and methacrylic acid; A-B-A block copolymer of polystyrene, ethylene-butylene copolymer and polystyrene, containing by weight 35?% or less of styrene, in one of the f (39019030)