Wacker VINNOL H15/50 Vinyl Chloride-Vinyl Acetate Copolymer Resin for Heat-Seal Coatings, Screen / Gravure Printing and Strippable Coatings

Full name and product positioning Product full name: Wacker VINNOL® H15/50 vinyl chloride-vinyl acetate copolymer resin (VC/VAc resin, binary copolymer) VINNOL® H15/50 is Wacker's classic vinyl chloride / vinyl acetate binary copolymer resin. It contains approx. 85 wt% vinyl chloride and 15 wt% vinyl acetate with a K value of approx. 50 and medium solution viscosity. As a physically drying thermoplastic binder it forms tough films with low water absorption and low gas permeability, and it adheres well to many substrates. It is widely used in heat-seal coatings, screen / gravure / pad / transfer printing inks and strippable protective coatings. Core technical parameters Parameter Typical value / range Appearance / supply form White powder Vinyl chloride (VC) content Approx. 85 wt% Vinyl acetate (VAc) content Approx. 15 wt% Free hydroxyl content — (no hydroxyl; not a functionalized grade) K value 49 – 51 Solution viscosity (20% MEK, 20 °C) 60 – 80 mPa·s Flow time (20% MEK) Approx. 66 s Chlorine content 47.7 – 48.9 wt% Glass transition temperature Tg Approx. 74 °C Density Approx. 1.37 g/cm³ Bulk density Approx. 750 kg/m³ Weight-average molecular weight Mw 60,000 – 80,000 g/mol Volatile content < 1.0 wt% Particle size < 1.0 mm Solubility Ketones and esters are common true solvents; insoluble in alcohols and aliphatic hydrocarbons; aromatic hydrocarbons can be used together with true solvents Food contact / FDA — (to be confirmed with the Wacker account manager) Packaging 25 kg three-layer kraft paper bag  Storage conditions Dry, sealed at room temperature (<25 °C); shelf life ≥ 12 months Core advantages ·   Tough and flexible films with low water absorption and low gas permeability, helping to improve the mechanical properties and water resistance of coatings ·   Good resistance to oils, greases, dilute acids, dilute alkalis, salt water, aliphatic hydrocarbons and alcohols, making it suitable as a protective and heat-seal binder ·   Good adhesion to metals, PVC, paper, films and other substrates; suitable for heat-seal coatings, screen / gravure inks and transfer hot-stamping ·   Good compatibility with other VINNOL® surface coating resins; blending with low-viscosity grades can adjust system viscosity and film properties ·   Fine particles (<1.0 mm) and stable bulk density make feeding, metering and solvent dissolution convenient, offering good processing convenience Main application areas ·   Core applications: heat-seal coatings, screen-printing inks, gravure inks, pad-printing inks, transfer inks ·   Suitable areas: strippable protective coatings, plastic coatings, industrial wood coatings, paper and film coatings, protective and architectural coatings, leather inks, adhesives ·   Not recommended: systems used alone for long-term outdoor exposure without UV / heat stabilizers; direct food contact (FDA compliance is not marked in the TDS); long-term coexistence with zinc, cadmium or iron oxide pigments at high temperature, to reduce the risk of resin decomposition and discoloration; alcohols and aliphatic hydrocarbons do not dissolve this product