Industrial Grade Barrier Polymers provide long lasting protection for packaging and medical film solutions, film packaging solutions, long shelf-life of packaged items and ready-to-use premixes can be extruded and co extruded into films, including heat-shrinkable films, and thermoformable sheets for use in packaging. The Polymers are copolymers based on vinylidene chloride and vinyl chloride monomers with good adhesion characteristics combined with barrier properties. The Polymers can be used as a primer on a wide range of substrates, offering binding capabilities for print inks and paints, as well as protective varnishes. The Industrial Grade Barrier Polymers provide chemical resistance for coatings and coverings along with heat-sealability, transparency, and glossiness and is soluble in a wide range of common organic solvents at room temperature.