Wacker VINNOL E15/45M VC/VAc Resin — Carboxyl-Containing Terpolymer for Metal Primers, Anti-Corrosion Coatings and Printing Inks

Full name and product positioning Product full name: Wacker VINNOL® E15/45M carboxyl-containing vinyl chloride-vinyl acetate terpolymer resin This grade is a carboxyl-containing vinyl chloride-vinyl acetate-dicarboxylic acid terpolymer resin produced by Wacker using emulsion polymerization, with a K value of 44–46, making it a medium-molecular-weight grade. Because of its carboxyl functional groups it adheres well to metals and polar substrates such as polyester and cellophane, and it can be crosslinked with isocyanates, epoxy or amino resins. It is commonly used in metal primers, anti-corrosion coatings, printing inks and heat-seal coating formulations. Core technical parameters Parameter Typical value / range Appearance White granules (with a small amount of powder) Vinyl chloride (VC) content Approx. 84 wt% Vinyl acetate (VAc) content Approx. 15 wt% Dicarboxylic acid content Approx. 1 wt% Acid value 6–8 mg KOH/g K value 44–46 Dynamic viscosity (20% MEK solution, 20 °C) 35–45 mPa·s Chlorine content 47.1–48.3 wt% Volatile content <0.5 wt% Flow time (20% MEK solution) Approx. 34 s Density 1.38 g/cm³ Bulk density Approx. 510 kg/m³ Glass transition temperature (Tg) Approx. 73 °C Weight-average molecular weight (Mw) 50,000–60,000 g/mol Particle size <2.5 mm Solubility Ketones and esters are true solvents; insoluble in alcohols and aliphatic hydrocarbons Packaging 25 kg coated three-layer paper bag  Food-contact compliance Complies with FDA 21 CFR §175.105 and §175.300 Core advantages ·   Emulsion process gives good pigment wetting and dispersion, helping improve color development in pigmented systems ·   Carboxyl functional groups provide good adhesion to metals and polar substrates such as polyester and cellophane ·   Can be crosslinked with isocyanates, epoxy or amino resins, helping improve coating chemical resistance and surface hardness ·   Good resistance to oils, greases, dilute acids and alkalis and salt water, suitable for anti-corrosion primer systems ·   Fully compatible with other VINNOL® series resins, making it easy to adjust viscosity, drying speed and similar properties Main application areas ·   Core applications: metal anti-corrosion primers, coil coatings, gravure inks, heat-seal coatings, screen / pad-printing inks ·   Suitable areas: paper and film coating, inkjet inks, transfer inks, masonry architectural coatings, metal paints ·   Not recommended: direct use as a topcoat on unprimed metal; long-term outdoor exposure systems without UV stabilizers; high-temperature processing formulations containing zinc, cadmium or iron oxide pigments