CRYSTALLIZABLE CONTROLLED COMPOSITION INTERPOLYMERS OF VINYLIDENE CHLORIDE AND METHYL METHACRYLATE AND METHOD OF PREPARING SAME

摘要

Crystallizable, controlled composition interpolymers consisting essentially of (a) from 80 to 92 mole percent vinylidene chloride, (b) from 8 to 12 mole percent methyl methacrylate, and (c) up to 3 weight percent, based on the combined weight of (a) and (b), of one or more ethylenically unsaturated comonomers; such interpolymers having a relative viscosity of at least 1.40 at 25 DEG C as a 1 percent solution in tetrahydrofuran and being capable of forming substantially haze-free solutions when present in an amount of 20 percent solids in a solvent mixture consisting of 65 percent by weight tetrahydrofuran and 35 percent by weight toluene.