Wacker VINNOL H 30/48 M VC/VAc Resin — Carboxyl-Containing VC/VAc Terpolymer for Metal Adhesion, Anti-Corrosion Coatings and Heat-Seal Coatings

Full name and product positioning Product full name: Wacker VINNOL® H 30/48 M carboxyl-containing vinyl chloride-vinyl acetate terpolymer resin (VC/VAc resin) Wacker VINNOL® H 30/48 M is a carboxyl-containing vinyl chloride-vinyl acetate-dicarboxylic acid terpolymer (approx. 70 wt% vinyl chloride, approx. 29 wt% vinyl acetate, approx. 1 wt% dicarboxylic acid) produced by suspension polymerization. It offers good metal adhesion and can be crosslinked with isocyanates and similar curing agents. With a high vinyl acetate content and good ester solubility, it is a common binder for metal anti-corrosion and heat-seal coatings. Core technical parameters Parameter Typical value / range Appearance / physical form White powder Chemical type Carboxyl-containing vinyl chloride-vinyl acetate-dicarboxylic acid terpolymer Polymerization process Suspension polymerization (H series) Vinyl chloride (VC) content 70.0 ± 1.0 wt% Vinyl acetate (VAc) content 29.0 ± 1.0 wt% Other monomers (dicarboxylic acid) Approx. 1.0 wt% Acid value 7.0 ± 1.5 mg KOH/g (TDS: 5.5 – 8.5) Hydroxyl content — (none) K value 48 ± 1 (TDS: 47 – 49) Average molecular weight Mw (SEC) 60 – 80 × 10³ Solution viscosity (20% MEK, 20 °C) 45 ± 10 mPa·s (TDS: 35 – 55) Flow time (ISO 2431, 4 mm cup) Approx. 45 s Particle size < 1 mm Glass transition temperature Tg (DSC) Approx. 65 °C Solubility Good solubility in ester solvents; can be processed in ketone-free solvent systems Crosslinking reactivity Crosslinkable with isocyanates, polyaziridines, polycarbodiimides and similar curing agents FDA 175.300 food-contact compliance Yes Packaging Approx. 20 kg/bag Core advantages ·   Contains approx. 1 wt% carboxyl functional groups, giving good adhesion to metal, mineral and glass substrates ·   High vinyl acetate content provides good solubility in pure ester solvents, enabling ketone-free processing ·   Films are flexible and durable, abrasion-resistant, with good water resistance and chemical resistance, and resist aliphatic hydrocarbon media ·   Can be crosslinked with isocyanates and similar curing agents, helping to improve chemical resistance and surface hardness ·   In heat-seal coatings it can help lower the heat-seal temperature while balancing heat-seal strength and flexibility Main application areas ·   Core applications: metal anti-corrosion coatings, coil coatings, can coatings, automotive coatings, heat-seal coatings ·   Suitable areas: metal adhesives, marine coatings, road-marking / floor coatings, crosslinking component of reactive coatings, pigment preparation ·   Not recommended: systems sensitive to free acid value or requiring long-term contact with strongly alkaline media; for direct waterborne dispersion, emulsion-type products should be selected instead; small-scale trials before use are recommended