Airflex 4530 terpolymers of vinyl chloride, ethylene and a third monomer Air Products Ethylene copolymers - emulsions (VAE, EVC) Airflex EVCL emulsions are terpolymers of vinyl chloride, ethylene and a third monomer, which imparts amide functionality to the polymers. Airflex 4530 emulsion is the stiffest with the lowest ethylene content. Because their major constituent is vinyl chloride, they can be used in fire-retardant adhesives. Airflex EVCL emulsions show good adhesion to metals, some plastic films and foams. The emulsions provide clear, tough films that have outstanding water and alkali resistance. Airflex 4530 emulsion has poor film formation properties due to its high Tg. Heat or a coalescent solvent is necessary to insure that a properly formed film is produced during drying. Good film formation is necessary to promote moisture vapor barrier properties. Airflex 4530 emulsion has a high heat-seal temperature with very good blocking resistance. Compounding Airflex EVCL series emulsions are compatible with a wide variety of compounding ingredients. Their anionic stabilization systems are effective at a high pH. Airflex EVCL emulsions will accept high levels of clay, calcium carbonate or other fillers. However, they have poor tolerance toward trivalent ions. Airflex EVCL emulsions are compatible with most common plasticizers. Acceptable classes of plasticizers are butyl benzyl phthalate, benzoate esters, phosphate esters and sulfonamides. Airflex EVCL emulsions can be thickened with Hydroxyethyl cellulose, inverse acrylic emulsion thickeners, associative thickeners and watersoluble acrylics. The emulsions contain chlorine in the polymer backbone and can be used to create fire-retardant adhesives and lagging cements with good adhesion to a variety of surfaces. Airflex EVCL emulsions can be crosslinked through the amide functionality on the polymers. Condensation reactions with additives such as urea formaldehyde resins, phenol formaldehyde resins and melamine formaldehyde resins are all possible. Crosslinking can improve the heat and solvent-resistance properties of Airflex EVCL series emulsions. Applications: Due to the presence of chlorine in the polymer backbone, Airflex EVCL series emulsions find use in fire-retardant adhesives and coatings. Terpolymers of vinyl chloride, ethylene and a third monomer, which imparts amide functionality to the polymers. Stiff emulsion with a lowe ethylene content. Can be used in fire-retardant adhesives. Shows good adhesion to metals, some plastic films and foams. Provides clear, tough films that have outstanding water and alkali resistance. Poor film formation properties, low flexibility. No dry tack. Heat or a coalescent solvent is necessary to insure that a properly formed film is produced during drying. High heat-seal temperature with very good blocking resistance.