Wacker VINNOL H 40/50 VC/VAc Resin — High Vinyl Acetate VC/VAc Copolymer for Heat-Seal Coatings, Printing Inks and Wood Lacquers

Full name and product positioning Product full name: Wacker VINNOL® H 40/50 vinyl chloride-vinyl acetate copolymer resin (VC/VAc resin) Wacker VINNOL® H 40/50 is a vinyl chloride-vinyl acetate copolymer with a high vinyl acetate content (approx. 63 wt% vinyl chloride, approx. 37 wt% vinyl acetate), produced by suspension polymerization. With good flexibility and solubility it can lower the heat-seal activation temperature and is suitable for processing in ketone-free solvent systems, making it a common binder for heat-seal coatings, printing inks and wood lacquers. Core technical parameters Parameter Typical value / range Appearance / physical form White powder Chemical type Vinyl chloride-vinyl acetate (VC/VAc) binary copolymer Polymerization process Suspension polymerization (H series) Vinyl chloride (VC) content 63.0 ± 1.0 wt% Vinyl acetate (VAc) content 37.0 ± 1.0 wt% Hydroxyl content — (none) Acid value — (to be confirmed) K value 50 ± 1 Average molecular weight Mw (SEC) 60 – 80 × 10³ Solution viscosity (20% MEK, 20 °C) 55 ± 10 mPa·s Flow time (ISO 2431, 4 mm cup) Approx. 45 s Particle size < 1 mm Glass transition temperature Tg (DSC) Approx. 60 °C Solubility Good solubility in esters, glycol esters/ethers and other weak solvents; can be processed in ketone-free solvent systems Media resistance Good resistance to oils, greases, dilute acid / alkali / salt solutions, aliphatic hydrocarbons (gasoline) and alcohols FDA 175.300 food-contact compliance Yes Packaging Approx. 20 kg/bag  Core advantages ·   High vinyl acetate content gives films greater flexibility and a lower softening temperature ·   Can be processed in ketone-free solvent systems, helping to optimize solvent selection and reduce odor ·   In heat-seal coatings it can help lower the heat-seal activation temperature with consistent heat-seal strength ·   Films are tough and abrasion-resistant with good water resistance and chemical resistance, and resist aliphatic hydrocarbon media ·   Good compatibility with ester-soluble nitrocellulose and other resins, which facilitates modification and blending Main application areas ·   Core applications: heat-seal coatings, printing inks (gravure / screen / transfer), wood lacquers, paper and film coating ·   Suitable areas: strippable coatings, masonry / road-marking coatings, anti-corrosion and marine coatings, artificial leather coatings, plasticized PVC adhesives ·   Not recommended: systems requiring high hydroxyl crosslinking or strong metal adhesion (M grades with carboxyl groups or A series with hydroxyl are recommended); for main coatings exposed to long-term outdoor weathering at high temperature, blending validation is recommended